Added AdaFruit SD card library
This commit is contained in:
Mike C
parent
a73fc9b191
commit
b14b066300
173
Universal_Serial_Adapter/Libraries/Adafruit-SD/File.cpp
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173
Universal_Serial_Adapter/Libraries/Adafruit-SD/File.cpp
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@ -0,0 +1,173 @@
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/*
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SD - a slightly more friendly wrapper for sdfatlib
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This library aims to expose a subset of SD card functionality
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in the form of a higher level "wrapper" object.
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License: GNU General Public License V3
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(Because sdfatlib is licensed with this.)
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(C) Copyright 2010 SparkFun Electronics
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*/
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#include <SD.h>
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/* for debugging file open/close leaks
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uint8_t nfilecount=0;
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*/
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File::File(SdFile f, char *n) {
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// oh man you are kidding me, new() doesnt exist? Ok we do it by hand!
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_file = (SdFile *)malloc(sizeof(SdFile));
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if (_file) {
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memcpy(_file, &f, sizeof(SdFile));
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strncpy(_name, n, 12);
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_name[12] = 0;
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/* for debugging file open/close leaks
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nfilecount++;
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Serial.print("Created \"");
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Serial.print(n);
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Serial.print("\": ");
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Serial.println(nfilecount, DEC);
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*/
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}
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}
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File::File(void) {
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_file = 0;
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_name[0] = 0;
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//Serial.print("Created empty file object");
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}
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File::~File(void) {
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// Serial.print("Deleted file object");
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}
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// returns a pointer to the file name
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char *File::name(void) {
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return _name;
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}
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// a directory is a special type of file
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boolean File::isDirectory(void) {
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return (_file && _file->isDir());
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}
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#if ARDUINO >= 100
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size_t File::write(uint8_t val) {
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if (_file)
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return _file->write(val);
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else
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return 0;
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}
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size_t File::write(const char *str) {
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if (_file)
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return _file->write(str);
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else
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return 0;
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}
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size_t File::write(const uint8_t *buf, size_t size) {
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if (_file)
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return _file->write(buf, size);
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else
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return 0;
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}
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#else
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void File::write(uint8_t val) {
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if (_file)
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_file->write(val);
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}
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void File::write(const char *str) {
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if (_file)
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_file->write(str);
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}
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void File::write(const uint8_t *buf, size_t size) {
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if (_file)
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_file->write(buf, size);
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}
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#endif // ARDUINO
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int File::peek() {
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if (! _file)
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return 0;
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int c = _file->read();
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if (c != -1) _file->seekCur(-1);
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return c;
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}
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int File::read() {
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if (_file)
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return _file->read();
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return -1;
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}
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// buffered read for more efficient, high speed reading
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int File::read(void *buf, uint16_t nbyte) {
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if (_file)
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return _file->read(buf, nbyte);
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return 0;
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}
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int File::available() {
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if (! _file) return 0;
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uint32_t n = size() - position();
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return n > 0X7FFF ? 0X7FFF : n;
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}
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void File::flush() {
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if (_file)
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_file->sync();
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}
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boolean File::seek(uint32_t pos) {
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if (! _file) return false;
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return _file->seekSet(pos);
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}
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uint32_t File::position() {
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if (! _file) return -1;
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return _file->curPosition();
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}
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uint32_t File::size() {
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if (! _file) return 0;
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return _file->fileSize();
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}
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void File::close() {
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if (_file) {
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_file->close();
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free(_file);
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_file = 0;
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/* for debugging file open/close leaks
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nfilecount--;
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Serial.print("Deleted ");
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Serial.println(nfilecount, DEC);
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*/
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}
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}
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File::operator bool() {
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if (_file)
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return _file->isOpen();
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return false;
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}
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620
Universal_Serial_Adapter/Libraries/Adafruit-SD/SD.cpp
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620
Universal_Serial_Adapter/Libraries/Adafruit-SD/SD.cpp
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@ -0,0 +1,620 @@
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/*
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SD - a slightly more friendly wrapper for sdfatlib
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This library aims to expose a subset of SD card functionality
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in the form of a higher level "wrapper" object.
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License: GNU General Public License V3
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(Because sdfatlib is licensed with this.)
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(C) Copyright 2010 SparkFun Electronics
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This library provides four key benefits:
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* Including `SD.h` automatically creates a global
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`SD` object which can be interacted with in a similar
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manner to other standard global objects like `Serial` and `Ethernet`.
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* Boilerplate initialisation code is contained in one method named
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`begin` and no further objects need to be created in order to access
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the SD card.
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* Calls to `open` can supply a full path name including parent
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directories which simplifies interacting with files in subdirectories.
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* Utility methods are provided to determine whether a file exists
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and to create a directory heirarchy.
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Note however that not all functionality provided by the underlying
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sdfatlib library is exposed.
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*/
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/*
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Implementation Notes
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In order to handle multi-directory path traversal, functionality that
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requires this ability is implemented as callback functions.
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Individual methods call the `walkPath` function which performs the actual
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directory traversal (swapping between two different directory/file handles
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along the way) and at each level calls the supplied callback function.
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Some types of functionality will take an action at each level (e.g. exists
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or make directory) which others will only take an action at the bottom
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level (e.g. open).
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*/
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#include "SD.h"
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// Used by `getNextPathComponent`
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#define MAX_COMPONENT_LEN 12 // What is max length?
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#define PATH_COMPONENT_BUFFER_LEN MAX_COMPONENT_LEN+1
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bool getNextPathComponent(char *path, unsigned int *p_offset,
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char *buffer) {
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/*
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Parse individual path components from a path.
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e.g. after repeated calls '/foo/bar/baz' will be split
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into 'foo', 'bar', 'baz'.
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This is similar to `strtok()` but copies the component into the
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supplied buffer rather than modifying the original string.
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`buffer` needs to be PATH_COMPONENT_BUFFER_LEN in size.
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`p_offset` needs to point to an integer of the offset at
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which the previous path component finished.
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Returns `true` if more components remain.
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Returns `false` if this is the last component.
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(This means path ended with 'foo' or 'foo/'.)
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*/
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// TODO: Have buffer local to this function, so we know it's the
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// correct length?
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int bufferOffset = 0;
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int offset = *p_offset;
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// Skip root or other separator
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if (path[offset] == '/') {
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offset++;
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}
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// Copy the next next path segment
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while (bufferOffset < MAX_COMPONENT_LEN
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&& (path[offset] != '/')
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&& (path[offset] != '\0')) {
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buffer[bufferOffset++] = path[offset++];
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}
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buffer[bufferOffset] = '\0';
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// Skip trailing separator so we can determine if this
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// is the last component in the path or not.
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if (path[offset] == '/') {
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offset++;
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}
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*p_offset = offset;
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return (path[offset] != '\0');
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}
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boolean walkPath(char *filepath, SdFile& parentDir,
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boolean (*callback)(SdFile& parentDir,
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char *filePathComponent,
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boolean isLastComponent,
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void *object),
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void *object = NULL) {
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/*
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When given a file path (and parent directory--normally root),
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this function traverses the directories in the path and at each
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level calls the supplied callback function while also providing
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the supplied object for context if required.
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e.g. given the path '/foo/bar/baz'
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the callback would be called at the equivalent of
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'/foo', '/foo/bar' and '/foo/bar/baz'.
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The implementation swaps between two different directory/file
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handles as it traverses the directories and does not use recursion
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in an attempt to use memory efficiently.
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If a callback wishes to stop the directory traversal it should
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return false--in this case the function will stop the traversal,
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tidy up and return false.
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If a directory path doesn't exist at some point this function will
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also return false and not subsequently call the callback.
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If a directory path specified is complete, valid and the callback
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did not indicate the traversal should be interrupted then this
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function will return true.
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*/
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SdFile subfile1;
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SdFile subfile2;
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char buffer[PATH_COMPONENT_BUFFER_LEN];
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unsigned int offset = 0;
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SdFile *p_parent;
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SdFile *p_child;
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SdFile *p_tmp_sdfile;
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p_child = &subfile1;
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p_parent = &parentDir;
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while (true) {
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boolean moreComponents = getNextPathComponent(filepath, &offset, buffer);
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boolean shouldContinue = callback((*p_parent), buffer, !moreComponents, object);
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if (!shouldContinue) {
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// TODO: Don't repeat this code?
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// If it's one we've created then we
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// don't need the parent handle anymore.
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if (p_parent != &parentDir) {
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(*p_parent).close();
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}
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return false;
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}
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if (!moreComponents) {
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break;
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}
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boolean exists = (*p_child).open(*p_parent, buffer, O_RDONLY);
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// If it's one we've created then we
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// don't need the parent handle anymore.
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if (p_parent != &parentDir) {
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(*p_parent).close();
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}
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// Handle case when it doesn't exist and we can't continue...
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if (exists) {
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// We alternate between two file handles as we go down
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// the path.
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if (p_parent == &parentDir) {
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p_parent = &subfile2;
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}
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p_tmp_sdfile = p_parent;
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p_parent = p_child;
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p_child = p_tmp_sdfile;
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} else {
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return false;
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}
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}
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if (p_parent != &parentDir) {
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(*p_parent).close(); // TODO: Return/ handle different?
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}
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return true;
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}
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/*
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The callbacks used to implement various functionality follow.
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Each callback is supplied with a parent directory handle,
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character string with the name of the current file path component,
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a flag indicating if this component is the last in the path and
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a pointer to an arbitrary object used for context.
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*/
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boolean callback_pathExists(SdFile& parentDir, char *filePathComponent,
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boolean isLastComponent, void *object) {
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/*
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Callback used to determine if a file/directory exists in parent
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directory.
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Returns true if file path exists.
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*/
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SdFile child;
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boolean exists = child.open(parentDir, filePathComponent, O_RDONLY);
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if (exists) {
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child.close();
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}
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return exists;
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}
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boolean callback_makeDirPath(SdFile& parentDir, char *filePathComponent,
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boolean isLastComponent, void *object) {
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/*
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Callback used to create a directory in the parent directory if
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it does not already exist.
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Returns true if a directory was created or it already existed.
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*/
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boolean result = false;
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SdFile child;
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result = callback_pathExists(parentDir, filePathComponent, isLastComponent, object);
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if (!result) {
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result = child.makeDir(parentDir, filePathComponent);
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}
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return result;
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}
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/*
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boolean callback_openPath(SdFile& parentDir, char *filePathComponent,
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boolean isLastComponent, void *object) {
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Callback used to open a file specified by a filepath that may
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specify one or more directories above it.
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Expects the context object to be an instance of `SDClass` and
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will use the `file` property of the instance to open the requested
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file/directory with the associated file open mode property.
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Always returns true if the directory traversal hasn't reached the
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bottom of the directory heirarchy.
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Returns false once the file has been opened--to prevent the traversal
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from descending further. (This may be unnecessary.)
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if (isLastComponent) {
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SDClass *p_SD = static_cast<SDClass*>(object);
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p_SD->file.open(parentDir, filePathComponent, p_SD->fileOpenMode);
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if (p_SD->fileOpenMode == FILE_WRITE) {
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p_SD->file.seekSet(p_SD->file.fileSize());
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}
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// TODO: Return file open result?
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return false;
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}
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return true;
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}
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*/
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boolean callback_remove(SdFile& parentDir, char *filePathComponent,
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boolean isLastComponent, void *object) {
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if (isLastComponent) {
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return SdFile::remove(parentDir, filePathComponent);
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}
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return true;
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}
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boolean callback_rmdir(SdFile& parentDir, char *filePathComponent,
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boolean isLastComponent, void *object) {
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if (isLastComponent) {
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SdFile f;
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if (!f.open(parentDir, filePathComponent, O_READ)) return false;
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return f.rmDir();
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}
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return true;
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}
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/* Implementation of class used to create `SDCard` object. */
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boolean SDClass::begin(uint8_t csPin, int8_t mosi, int8_t miso, int8_t sck) {
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/*
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Performs the initialisation required by the sdfatlib library.
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Return true if initialization succeeds, false otherwise.
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*/
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return card.init(SPI_HALF_SPEED, csPin, mosi, miso, sck) &&
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volume.init(card) &&
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root.openRoot(volume);
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}
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// this little helper is used to traverse paths
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SdFile SDClass::getParentDir(char *filepath, int *index) {
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// get parent directory
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SdFile d1 = root; // start with the mostparent, root!
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SdFile d2;
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// we'll use the pointers to swap between the two objects
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SdFile *parent = &d1;
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SdFile *subdir = &d2;
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char *origpath = filepath;
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while (strchr(filepath, '/')) {
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// get rid of leading /'s
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if (filepath[0] == '/') {
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filepath++;
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continue;
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}
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if (! strchr(filepath, '/')) {
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// it was in the root directory, so leave now
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break;
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}
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// extract just the name of the next subdirectory
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uint8_t idx = strchr(filepath, '/') - filepath;
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if (idx > 12)
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idx = 12; // dont let them specify long names
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char subdirname[13];
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strncpy(subdirname, filepath, idx);
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subdirname[idx] = 0;
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// close the subdir (we reuse them) if open
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subdir->close();
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if (! subdir->open(parent, subdirname, O_READ)) {
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// failed to open one of the subdirectories
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return SdFile();
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}
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// move forward to the next subdirectory
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filepath += idx;
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// we reuse the objects, close it.
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parent->close();
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// swap the pointers
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SdFile *t = parent;
|
||||
parent = subdir;
|
||||
subdir = t;
|
||||
}
|
||||
|
||||
*index = (int)(filepath - origpath);
|
||||
// parent is now the parent diretory of the file!
|
||||
return *parent;
|
||||
}
|
||||
|
||||
|
||||
File SDClass::open(char *filepath, uint8_t mode) {
|
||||
/*
|
||||
|
||||
Open the supplied file path for reading or writing.
|
||||
|
||||
The file content can be accessed via the `file` property of
|
||||
the `SDClass` object--this property is currently
|
||||
a standard `SdFile` object from `sdfatlib`.
|
||||
|
||||
Defaults to read only.
|
||||
|
||||
If `write` is true, default action (when `append` is true) is to
|
||||
append data to the end of the file.
|
||||
|
||||
If `append` is false then the file will be truncated first.
|
||||
|
||||
If the file does not exist and it is opened for writing the file
|
||||
will be created.
|
||||
|
||||
An attempt to open a file for reading that does not exist is an
|
||||
error.
|
||||
|
||||
*/
|
||||
|
||||
int pathidx;
|
||||
|
||||
// do the interative search
|
||||
SdFile parentdir = getParentDir(filepath, &pathidx);
|
||||
// no more subdirs!
|
||||
|
||||
filepath += pathidx;
|
||||
|
||||
if (! filepath[0]) {
|
||||
// it was the directory itself!
|
||||
return File(parentdir, "/");
|
||||
}
|
||||
|
||||
// Open the file itself
|
||||
SdFile file;
|
||||
|
||||
// failed to open a subdir!
|
||||
if (!parentdir.isOpen())
|
||||
return File();
|
||||
|
||||
// there is a special case for the Root directory since its a static dir
|
||||
if (parentdir.isRoot()) {
|
||||
if ( ! file.open(SD.root, filepath, mode)) {
|
||||
// failed to open the file :(
|
||||
return File();
|
||||
}
|
||||
// dont close the root!
|
||||
} else {
|
||||
if ( ! file.open(parentdir, filepath, mode)) {
|
||||
return File();
|
||||
}
|
||||
// close the parent
|
||||
parentdir.close();
|
||||
}
|
||||
|
||||
if (mode & (O_APPEND | O_WRITE))
|
||||
file.seekSet(file.fileSize());
|
||||
return File(file, filepath);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
File SDClass::open(char *filepath, uint8_t mode) {
|
||||
//
|
||||
|
||||
Open the supplied file path for reading or writing.
|
||||
|
||||
The file content can be accessed via the `file` property of
|
||||
the `SDClass` object--this property is currently
|
||||
a standard `SdFile` object from `sdfatlib`.
|
||||
|
||||
Defaults to read only.
|
||||
|
||||
If `write` is true, default action (when `append` is true) is to
|
||||
append data to the end of the file.
|
||||
|
||||
If `append` is false then the file will be truncated first.
|
||||
|
||||
If the file does not exist and it is opened for writing the file
|
||||
will be created.
|
||||
|
||||
An attempt to open a file for reading that does not exist is an
|
||||
error.
|
||||
|
||||
//
|
||||
|
||||
// TODO: Allow for read&write? (Possibly not, as it requires seek.)
|
||||
|
||||
fileOpenMode = mode;
|
||||
walkPath(filepath, root, callback_openPath, this);
|
||||
|
||||
return File();
|
||||
|
||||
}
|
||||
*/
|
||||
|
||||
|
||||
//boolean SDClass::close() {
|
||||
// /*
|
||||
//
|
||||
// Closes the file opened by the `open` method.
|
||||
//
|
||||
// */
|
||||
// file.close();
|
||||
//}
|
||||
|
||||
|
||||
boolean SDClass::exists(char *filepath) {
|
||||
/*
|
||||
|
||||
Returns true if the supplied file path exists.
|
||||
|
||||
*/
|
||||
return walkPath(filepath, root, callback_pathExists);
|
||||
}
|
||||
|
||||
|
||||
//boolean SDClass::exists(char *filepath, SdFile& parentDir) {
|
||||
// /*
|
||||
//
|
||||
// Returns true if the supplied file path rooted at `parentDir`
|
||||
// exists.
|
||||
//
|
||||
// */
|
||||
// return walkPath(filepath, parentDir, callback_pathExists);
|
||||
//}
|
||||
|
||||
|
||||
boolean SDClass::mkdir(char *filepath) {
|
||||
/*
|
||||
|
||||
Makes a single directory or a heirarchy of directories.
|
||||
|
||||
A rough equivalent to `mkdir -p`.
|
||||
|
||||
*/
|
||||
return walkPath(filepath, root, callback_makeDirPath);
|
||||
}
|
||||
|
||||
boolean SDClass::rmdir(char *filepath) {
|
||||
/*
|
||||
|
||||
Makes a single directory or a heirarchy of directories.
|
||||
|
||||
A rough equivalent to `mkdir -p`.
|
||||
|
||||
*/
|
||||
return walkPath(filepath, root, callback_rmdir);
|
||||
}
|
||||
|
||||
boolean SDClass::remove(char *filepath) {
|
||||
return walkPath(filepath, root, callback_remove);
|
||||
}
|
||||
|
||||
void SDClass::enableCRC(boolean mode) {
|
||||
card.enableCRC(mode);
|
||||
}
|
||||
|
||||
|
||||
// allows you to recurse into a directory
|
||||
File File::openNextFile(uint8_t mode) {
|
||||
dir_t p;
|
||||
|
||||
//Serial.print("\t\treading dir...");
|
||||
while (_file->readDir(&p) > 0) {
|
||||
|
||||
// done if past last used entry
|
||||
if (p.name[0] == DIR_NAME_FREE) {
|
||||
//Serial.println("end");
|
||||
return File();
|
||||
}
|
||||
|
||||
// skip deleted entry and entries for . and ..
|
||||
if (p.name[0] == DIR_NAME_DELETED || p.name[0] == '.') {
|
||||
//Serial.println("dots");
|
||||
continue;
|
||||
}
|
||||
|
||||
// only list subdirectories and files
|
||||
if (!DIR_IS_FILE_OR_SUBDIR(&p)) {
|
||||
//Serial.println("notafile");
|
||||
continue;
|
||||
}
|
||||
|
||||
// print file name with possible blank fill
|
||||
SdFile f;
|
||||
char name[13];
|
||||
_file->dirName(p, name);
|
||||
//Serial.print("try to open file ");
|
||||
//Serial.println(name);
|
||||
|
||||
if (f.open(_file, name, mode)) {
|
||||
//Serial.println("OK!");
|
||||
return File(f, name);
|
||||
} else {
|
||||
//Serial.println("ugh");
|
||||
return File();
|
||||
}
|
||||
}
|
||||
|
||||
//Serial.println("nothing");
|
||||
return File();
|
||||
}
|
||||
|
||||
void File::rewindDirectory(void) {
|
||||
if (isDirectory())
|
||||
_file->rewind();
|
||||
}
|
||||
|
||||
SDClass SD;
|
||||
114
Universal_Serial_Adapter/Libraries/Adafruit-SD/SD.h
Normal file
114
Universal_Serial_Adapter/Libraries/Adafruit-SD/SD.h
Normal file
|
|
@ -0,0 +1,114 @@
|
|||
/*
|
||||
|
||||
SD - a slightly more friendly wrapper for sdfatlib
|
||||
|
||||
This library aims to expose a subset of SD card functionality
|
||||
in the form of a higher level "wrapper" object.
|
||||
|
||||
License: GNU General Public License V3
|
||||
(Because sdfatlib is licensed with this.)
|
||||
|
||||
(C) Copyright 2010 SparkFun Electronics
|
||||
|
||||
*/
|
||||
|
||||
#ifndef __SD_H__
|
||||
#define __SD_H__
|
||||
|
||||
#if ARDUINO >= 100
|
||||
#include "Arduino.h"
|
||||
#else
|
||||
#include "WProgram.h"
|
||||
#endif
|
||||
|
||||
#include <utility/SdFat.h>
|
||||
#include <utility/SdFatUtil.h>
|
||||
|
||||
#define FILE_READ O_READ
|
||||
#define FILE_WRITE (O_READ | O_WRITE | O_CREAT)
|
||||
|
||||
class File : public Stream {
|
||||
private:
|
||||
char _name[13]; // our name
|
||||
SdFile *_file; // underlying file pointer
|
||||
|
||||
public:
|
||||
File(SdFile f, char *name); // wraps an underlying SdFile
|
||||
File(void); // 'empty' constructor
|
||||
~File(void); // destructor
|
||||
#if ARDUINO >= 100
|
||||
virtual size_t write(uint8_t);
|
||||
virtual size_t write(const char *str);
|
||||
virtual size_t write(const uint8_t *buf, size_t size);
|
||||
#else
|
||||
virtual void write(uint8_t);
|
||||
virtual void write(const char *str);
|
||||
virtual void write(const uint8_t *buf, size_t size);
|
||||
#endif
|
||||
virtual int read();
|
||||
virtual int peek();
|
||||
virtual int available();
|
||||
virtual void flush();
|
||||
int read(void *buf, uint16_t nbyte);
|
||||
boolean seek(uint32_t pos);
|
||||
uint32_t position();
|
||||
uint32_t size();
|
||||
void close();
|
||||
operator bool();
|
||||
char * name();
|
||||
|
||||
boolean isDirectory(void);
|
||||
File openNextFile(uint8_t mode = O_RDONLY);
|
||||
void rewindDirectory(void);
|
||||
};
|
||||
|
||||
class SDClass {
|
||||
|
||||
private:
|
||||
// These are required for initialisation and use of sdfatlib
|
||||
Sd2Card card;
|
||||
SdVolume volume;
|
||||
SdFile root;
|
||||
|
||||
// my quick&dirty iterator, should be replaced
|
||||
SdFile getParentDir(char *filepath, int *indx);
|
||||
public:
|
||||
// This needs to be called to set up the connection to the SD card
|
||||
// before other methods are used.
|
||||
boolean begin(uint8_t csPin = SD_CHIP_SELECT_PIN, int8_t mosi = -1, int8_t miso = -1, int8_t sck = -1);
|
||||
|
||||
// Open the specified file/directory with the supplied mode (e.g. read or
|
||||
// write, etc). Returns a File object for interacting with the file.
|
||||
// Note that currently only one file can be open at a time.
|
||||
File open(char *filename, uint8_t mode = FILE_READ);
|
||||
|
||||
// Methods to determine if the requested file path exists.
|
||||
boolean exists(char *filepath);
|
||||
|
||||
// Create the requested directory heirarchy--if intermediate directories
|
||||
// do not exist they will be created.
|
||||
boolean mkdir(char *filepath);
|
||||
|
||||
// Delete the file.
|
||||
boolean remove(char *filepath);
|
||||
|
||||
boolean rmdir(char *filepath);
|
||||
|
||||
void enableCRC(boolean mode);
|
||||
|
||||
private:
|
||||
|
||||
// This is used to determine the mode used to open a file
|
||||
// it's here because it's the easiest place to pass the
|
||||
// information through the directory walking function. But
|
||||
// it's probably not the best place for it.
|
||||
// It shouldn't be set directly--it is set via the parameters to `open`.
|
||||
int fileOpenMode;
|
||||
|
||||
friend class File;
|
||||
friend boolean callback_openPath(SdFile&, char *, boolean, void *);
|
||||
};
|
||||
|
||||
extern SDClass SD;
|
||||
|
||||
#endif
|
||||
30
Universal_Serial_Adapter/Libraries/Adafruit-SD/keywords.txt
Normal file
30
Universal_Serial_Adapter/Libraries/Adafruit-SD/keywords.txt
Normal file
|
|
@ -0,0 +1,30 @@
|
|||
#######################################
|
||||
# Syntax Coloring Map SD
|
||||
#######################################
|
||||
|
||||
#######################################
|
||||
# Datatypes (KEYWORD1)
|
||||
#######################################
|
||||
|
||||
SD KEYWORD1
|
||||
File KEYWORD1
|
||||
|
||||
#######################################
|
||||
# Methods and Functions (KEYWORD2)
|
||||
#######################################
|
||||
begin KEYWORD2
|
||||
exists KEYWORD2
|
||||
mkdir KEYWORD2
|
||||
remove KEYWORD2
|
||||
rmdir KEYWORD2
|
||||
open KEYWORD2
|
||||
close KEYWORD2
|
||||
seek KEYWORD2
|
||||
position KEYWORD2
|
||||
size KEYWORD2
|
||||
|
||||
#######################################
|
||||
# Constants (LITERAL1)
|
||||
#######################################
|
||||
FILE_READ LITERAL1
|
||||
FILE_WRITE LITERAL1
|
||||
|
|
@ -0,0 +1,418 @@
|
|||
/* Arduino SdFat Library
|
||||
* Copyright (C) 2009 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino SdFat Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino SdFat Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef FatStructs_h
|
||||
#define FatStructs_h
|
||||
/**
|
||||
* \file
|
||||
* FAT file structures
|
||||
*/
|
||||
/*
|
||||
* mostly from Microsoft document fatgen103.doc
|
||||
* http://www.microsoft.com/whdc/system/platform/firmware/fatgen.mspx
|
||||
*/
|
||||
//------------------------------------------------------------------------------
|
||||
/** Value for byte 510 of boot block or MBR */
|
||||
uint8_t const BOOTSIG0 = 0X55;
|
||||
/** Value for byte 511 of boot block or MBR */
|
||||
uint8_t const BOOTSIG1 = 0XAA;
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* \struct partitionTable
|
||||
* \brief MBR partition table entry
|
||||
*
|
||||
* A partition table entry for a MBR formatted storage device.
|
||||
* The MBR partition table has four entries.
|
||||
*/
|
||||
struct partitionTable {
|
||||
/**
|
||||
* Boot Indicator . Indicates whether the volume is the active
|
||||
* partition. Legal values include: 0X00. Do not use for booting.
|
||||
* 0X80 Active partition.
|
||||
*/
|
||||
uint8_t boot;
|
||||
/**
|
||||
* Head part of Cylinder-head-sector address of the first block in
|
||||
* the partition. Legal values are 0-255. Only used in old PC BIOS.
|
||||
*/
|
||||
uint8_t beginHead;
|
||||
/**
|
||||
* Sector part of Cylinder-head-sector address of the first block in
|
||||
* the partition. Legal values are 1-63. Only used in old PC BIOS.
|
||||
*/
|
||||
unsigned beginSector : 6;
|
||||
/** High bits cylinder for first block in partition. */
|
||||
unsigned beginCylinderHigh : 2;
|
||||
/**
|
||||
* Combine beginCylinderLow with beginCylinderHigh. Legal values
|
||||
* are 0-1023. Only used in old PC BIOS.
|
||||
*/
|
||||
uint8_t beginCylinderLow;
|
||||
/**
|
||||
* Partition type. See defines that begin with PART_TYPE_ for
|
||||
* some Microsoft partition types.
|
||||
*/
|
||||
uint8_t type;
|
||||
/**
|
||||
* head part of cylinder-head-sector address of the last sector in the
|
||||
* partition. Legal values are 0-255. Only used in old PC BIOS.
|
||||
*/
|
||||
uint8_t endHead;
|
||||
/**
|
||||
* Sector part of cylinder-head-sector address of the last sector in
|
||||
* the partition. Legal values are 1-63. Only used in old PC BIOS.
|
||||
*/
|
||||
unsigned endSector : 6;
|
||||
/** High bits of end cylinder */
|
||||
unsigned endCylinderHigh : 2;
|
||||
/**
|
||||
* Combine endCylinderLow with endCylinderHigh. Legal values
|
||||
* are 0-1023. Only used in old PC BIOS.
|
||||
*/
|
||||
uint8_t endCylinderLow;
|
||||
/** Logical block address of the first block in the partition. */
|
||||
uint32_t firstSector;
|
||||
/** Length of the partition, in blocks. */
|
||||
uint32_t totalSectors;
|
||||
};
|
||||
/** Type name for partitionTable */
|
||||
typedef struct partitionTable part_t;
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* \struct masterBootRecord
|
||||
*
|
||||
* \brief Master Boot Record
|
||||
*
|
||||
* The first block of a storage device that is formatted with a MBR.
|
||||
*/
|
||||
struct masterBootRecord {
|
||||
/** Code Area for master boot program. */
|
||||
uint8_t codeArea[440];
|
||||
/** Optional WindowsNT disk signature. May contain more boot code. */
|
||||
uint32_t diskSignature;
|
||||
/** Usually zero but may be more boot code. */
|
||||
uint16_t usuallyZero;
|
||||
/** Partition tables. */
|
||||
part_t part[4];
|
||||
/** First MBR signature byte. Must be 0X55 */
|
||||
uint8_t mbrSig0;
|
||||
/** Second MBR signature byte. Must be 0XAA */
|
||||
uint8_t mbrSig1;
|
||||
};
|
||||
/** Type name for masterBootRecord */
|
||||
typedef struct masterBootRecord mbr_t;
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* \struct biosParmBlock
|
||||
*
|
||||
* \brief BIOS parameter block
|
||||
*
|
||||
* The BIOS parameter block describes the physical layout of a FAT volume.
|
||||
*/
|
||||
struct biosParmBlock {
|
||||
/**
|
||||
* Count of bytes per sector. This value may take on only the
|
||||
* following values: 512, 1024, 2048 or 4096
|
||||
*/
|
||||
uint16_t bytesPerSector;
|
||||
/**
|
||||
* Number of sectors per allocation unit. This value must be a
|
||||
* power of 2 that is greater than 0. The legal values are
|
||||
* 1, 2, 4, 8, 16, 32, 64, and 128.
|
||||
*/
|
||||
uint8_t sectorsPerCluster;
|
||||
/**
|
||||
* Number of sectors before the first FAT.
|
||||
* This value must not be zero.
|
||||
*/
|
||||
uint16_t reservedSectorCount;
|
||||
/** The count of FAT data structures on the volume. This field should
|
||||
* always contain the value 2 for any FAT volume of any type.
|
||||
*/
|
||||
uint8_t fatCount;
|
||||
/**
|
||||
* For FAT12 and FAT16 volumes, this field contains the count of
|
||||
* 32-byte directory entries in the root directory. For FAT32 volumes,
|
||||
* this field must be set to 0. For FAT12 and FAT16 volumes, this
|
||||
* value should always specify a count that when multiplied by 32
|
||||
* results in a multiple of bytesPerSector. FAT16 volumes should
|
||||
* use the value 512.
|
||||
*/
|
||||
uint16_t rootDirEntryCount;
|
||||
/**
|
||||
* This field is the old 16-bit total count of sectors on the volume.
|
||||
* This count includes the count of all sectors in all four regions
|
||||
* of the volume. This field can be 0; if it is 0, then totalSectors32
|
||||
* must be non-zero. For FAT32 volumes, this field must be 0. For
|
||||
* FAT12 and FAT16 volumes, this field contains the sector count, and
|
||||
* totalSectors32 is 0 if the total sector count fits
|
||||
* (is less than 0x10000).
|
||||
*/
|
||||
uint16_t totalSectors16;
|
||||
/**
|
||||
* This dates back to the old MS-DOS 1.x media determination and is
|
||||
* no longer usually used for anything. 0xF8 is the standard value
|
||||
* for fixed (non-removable) media. For removable media, 0xF0 is
|
||||
* frequently used. Legal values are 0xF0 or 0xF8-0xFF.
|
||||
*/
|
||||
uint8_t mediaType;
|
||||
/**
|
||||
* Count of sectors occupied by one FAT on FAT12/FAT16 volumes.
|
||||
* On FAT32 volumes this field must be 0, and sectorsPerFat32
|
||||
* contains the FAT size count.
|
||||
*/
|
||||
uint16_t sectorsPerFat16;
|
||||
/** Sectors per track for interrupt 0x13. Not used otherwise. */
|
||||
uint16_t sectorsPerTrtack;
|
||||
/** Number of heads for interrupt 0x13. Not used otherwise. */
|
||||
uint16_t headCount;
|
||||
/**
|
||||
* Count of hidden sectors preceding the partition that contains this
|
||||
* FAT volume. This field is generally only relevant for media
|
||||
* visible on interrupt 0x13.
|
||||
*/
|
||||
uint32_t hidddenSectors;
|
||||
/**
|
||||
* This field is the new 32-bit total count of sectors on the volume.
|
||||
* This count includes the count of all sectors in all four regions
|
||||
* of the volume. This field can be 0; if it is 0, then
|
||||
* totalSectors16 must be non-zero.
|
||||
*/
|
||||
uint32_t totalSectors32;
|
||||
/**
|
||||
* Count of sectors occupied by one FAT on FAT32 volumes.
|
||||
*/
|
||||
uint32_t sectorsPerFat32;
|
||||
/**
|
||||
* This field is only defined for FAT32 media and does not exist on
|
||||
* FAT12 and FAT16 media.
|
||||
* Bits 0-3 -- Zero-based number of active FAT.
|
||||
* Only valid if mirroring is disabled.
|
||||
* Bits 4-6 -- Reserved.
|
||||
* Bit 7 -- 0 means the FAT is mirrored at runtime into all FATs.
|
||||
* -- 1 means only one FAT is active; it is the one referenced in bits 0-3.
|
||||
* Bits 8-15 -- Reserved.
|
||||
*/
|
||||
uint16_t fat32Flags;
|
||||
/**
|
||||
* FAT32 version. High byte is major revision number.
|
||||
* Low byte is minor revision number. Only 0.0 define.
|
||||
*/
|
||||
uint16_t fat32Version;
|
||||
/**
|
||||
* Cluster number of the first cluster of the root directory for FAT32.
|
||||
* This usually 2 but not required to be 2.
|
||||
*/
|
||||
uint32_t fat32RootCluster;
|
||||
/**
|
||||
* Sector number of FSINFO structure in the reserved area of the
|
||||
* FAT32 volume. Usually 1.
|
||||
*/
|
||||
uint16_t fat32FSInfo;
|
||||
/**
|
||||
* If non-zero, indicates the sector number in the reserved area
|
||||
* of the volume of a copy of the boot record. Usually 6.
|
||||
* No value other than 6 is recommended.
|
||||
*/
|
||||
uint16_t fat32BackBootBlock;
|
||||
/**
|
||||
* Reserved for future expansion. Code that formats FAT32 volumes
|
||||
* should always set all of the bytes of this field to 0.
|
||||
*/
|
||||
uint8_t fat32Reserved[12];
|
||||
};
|
||||
/** Type name for biosParmBlock */
|
||||
typedef struct biosParmBlock bpb_t;
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* \struct fat32BootSector
|
||||
*
|
||||
* \brief Boot sector for a FAT16 or FAT32 volume.
|
||||
*
|
||||
*/
|
||||
struct fat32BootSector {
|
||||
/** X86 jmp to boot program */
|
||||
uint8_t jmpToBootCode[3];
|
||||
/** informational only - don't depend on it */
|
||||
char oemName[8];
|
||||
/** BIOS Parameter Block */
|
||||
bpb_t bpb;
|
||||
/** for int0x13 use value 0X80 for hard drive */
|
||||
uint8_t driveNumber;
|
||||
/** used by Windows NT - should be zero for FAT */
|
||||
uint8_t reserved1;
|
||||
/** 0X29 if next three fields are valid */
|
||||
uint8_t bootSignature;
|
||||
/** usually generated by combining date and time */
|
||||
uint32_t volumeSerialNumber;
|
||||
/** should match volume label in root dir */
|
||||
char volumeLabel[11];
|
||||
/** informational only - don't depend on it */
|
||||
char fileSystemType[8];
|
||||
/** X86 boot code */
|
||||
uint8_t bootCode[420];
|
||||
/** must be 0X55 */
|
||||
uint8_t bootSectorSig0;
|
||||
/** must be 0XAA */
|
||||
uint8_t bootSectorSig1;
|
||||
};
|
||||
//------------------------------------------------------------------------------
|
||||
// End Of Chain values for FAT entries
|
||||
/** FAT16 end of chain value used by Microsoft. */
|
||||
uint16_t const FAT16EOC = 0XFFFF;
|
||||
/** Minimum value for FAT16 EOC. Use to test for EOC. */
|
||||
uint16_t const FAT16EOC_MIN = 0XFFF8;
|
||||
/** FAT32 end of chain value used by Microsoft. */
|
||||
uint32_t const FAT32EOC = 0X0FFFFFFF;
|
||||
/** Minimum value for FAT32 EOC. Use to test for EOC. */
|
||||
uint32_t const FAT32EOC_MIN = 0X0FFFFFF8;
|
||||
/** Mask a for FAT32 entry. Entries are 28 bits. */
|
||||
uint32_t const FAT32MASK = 0X0FFFFFFF;
|
||||
|
||||
/** Type name for fat32BootSector */
|
||||
typedef struct fat32BootSector fbs_t;
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* \struct directoryEntry
|
||||
* \brief FAT short directory entry
|
||||
*
|
||||
* Short means short 8.3 name, not the entry size.
|
||||
*
|
||||
* Date Format. A FAT directory entry date stamp is a 16-bit field that is
|
||||
* basically a date relative to the MS-DOS epoch of 01/01/1980. Here is the
|
||||
* format (bit 0 is the LSB of the 16-bit word, bit 15 is the MSB of the
|
||||
* 16-bit word):
|
||||
*
|
||||
* Bits 9-15: Count of years from 1980, valid value range 0-127
|
||||
* inclusive (1980-2107).
|
||||
*
|
||||
* Bits 5-8: Month of year, 1 = January, valid value range 1-12 inclusive.
|
||||
*
|
||||
* Bits 0-4: Day of month, valid value range 1-31 inclusive.
|
||||
*
|
||||
* Time Format. A FAT directory entry time stamp is a 16-bit field that has
|
||||
* a granularity of 2 seconds. Here is the format (bit 0 is the LSB of the
|
||||
* 16-bit word, bit 15 is the MSB of the 16-bit word).
|
||||
*
|
||||
* Bits 11-15: Hours, valid value range 0-23 inclusive.
|
||||
*
|
||||
* Bits 5-10: Minutes, valid value range 0-59 inclusive.
|
||||
*
|
||||
* Bits 0-4: 2-second count, valid value range 0-29 inclusive (0 - 58 seconds).
|
||||
*
|
||||
* The valid time range is from Midnight 00:00:00 to 23:59:58.
|
||||
*/
|
||||
struct directoryEntry {
|
||||
/**
|
||||
* Short 8.3 name.
|
||||
* The first eight bytes contain the file name with blank fill.
|
||||
* The last three bytes contain the file extension with blank fill.
|
||||
*/
|
||||
uint8_t name[11];
|
||||
/** Entry attributes.
|
||||
*
|
||||
* The upper two bits of the attribute byte are reserved and should
|
||||
* always be set to 0 when a file is created and never modified or
|
||||
* looked at after that. See defines that begin with DIR_ATT_.
|
||||
*/
|
||||
uint8_t attributes;
|
||||
/**
|
||||
* Reserved for use by Windows NT. Set value to 0 when a file is
|
||||
* created and never modify or look at it after that.
|
||||
*/
|
||||
uint8_t reservedNT;
|
||||
/**
|
||||
* The granularity of the seconds part of creationTime is 2 seconds
|
||||
* so this field is a count of tenths of a second and its valid
|
||||
* value range is 0-199 inclusive. (WHG note - seems to be hundredths)
|
||||
*/
|
||||
uint8_t creationTimeTenths;
|
||||
/** Time file was created. */
|
||||
uint16_t creationTime;
|
||||
/** Date file was created. */
|
||||
uint16_t creationDate;
|
||||
/**
|
||||
* Last access date. Note that there is no last access time, only
|
||||
* a date. This is the date of last read or write. In the case of
|
||||
* a write, this should be set to the same date as lastWriteDate.
|
||||
*/
|
||||
uint16_t lastAccessDate;
|
||||
/**
|
||||
* High word of this entry's first cluster number (always 0 for a
|
||||
* FAT12 or FAT16 volume).
|
||||
*/
|
||||
uint16_t firstClusterHigh;
|
||||
/** Time of last write. File creation is considered a write. */
|
||||
uint16_t lastWriteTime;
|
||||
/** Date of last write. File creation is considered a write. */
|
||||
uint16_t lastWriteDate;
|
||||
/** Low word of this entry's first cluster number. */
|
||||
uint16_t firstClusterLow;
|
||||
/** 32-bit unsigned holding this file's size in bytes. */
|
||||
uint32_t fileSize;
|
||||
};
|
||||
//------------------------------------------------------------------------------
|
||||
// Definitions for directory entries
|
||||
//
|
||||
/** Type name for directoryEntry */
|
||||
typedef struct directoryEntry dir_t;
|
||||
/** escape for name[0] = 0XE5 */
|
||||
uint8_t const DIR_NAME_0XE5 = 0X05;
|
||||
/** name[0] value for entry that is free after being "deleted" */
|
||||
uint8_t const DIR_NAME_DELETED = 0XE5;
|
||||
/** name[0] value for entry that is free and no allocated entries follow */
|
||||
uint8_t const DIR_NAME_FREE = 0X00;
|
||||
/** file is read-only */
|
||||
uint8_t const DIR_ATT_READ_ONLY = 0X01;
|
||||
/** File should hidden in directory listings */
|
||||
uint8_t const DIR_ATT_HIDDEN = 0X02;
|
||||
/** Entry is for a system file */
|
||||
uint8_t const DIR_ATT_SYSTEM = 0X04;
|
||||
/** Directory entry contains the volume label */
|
||||
uint8_t const DIR_ATT_VOLUME_ID = 0X08;
|
||||
/** Entry is for a directory */
|
||||
uint8_t const DIR_ATT_DIRECTORY = 0X10;
|
||||
/** Old DOS archive bit for backup support */
|
||||
uint8_t const DIR_ATT_ARCHIVE = 0X20;
|
||||
/** Test value for long name entry. Test is
|
||||
(d->attributes & DIR_ATT_LONG_NAME_MASK) == DIR_ATT_LONG_NAME. */
|
||||
uint8_t const DIR_ATT_LONG_NAME = 0X0F;
|
||||
/** Test mask for long name entry */
|
||||
uint8_t const DIR_ATT_LONG_NAME_MASK = 0X3F;
|
||||
/** defined attribute bits */
|
||||
uint8_t const DIR_ATT_DEFINED_BITS = 0X3F;
|
||||
/** Directory entry is part of a long name */
|
||||
static inline uint8_t DIR_IS_LONG_NAME(const dir_t* dir) {
|
||||
return (dir->attributes & DIR_ATT_LONG_NAME_MASK) == DIR_ATT_LONG_NAME;
|
||||
}
|
||||
/** Mask for file/subdirectory tests */
|
||||
uint8_t const DIR_ATT_FILE_TYPE_MASK = (DIR_ATT_VOLUME_ID | DIR_ATT_DIRECTORY);
|
||||
/** Directory entry is for a file */
|
||||
static inline uint8_t DIR_IS_FILE(const dir_t* dir) {
|
||||
return (dir->attributes & DIR_ATT_FILE_TYPE_MASK) == 0;
|
||||
}
|
||||
/** Directory entry is for a subdirectory */
|
||||
static inline uint8_t DIR_IS_SUBDIR(const dir_t* dir) {
|
||||
return (dir->attributes & DIR_ATT_FILE_TYPE_MASK) == DIR_ATT_DIRECTORY;
|
||||
}
|
||||
/** Directory entry is for a file or subdirectory */
|
||||
static inline uint8_t DIR_IS_FILE_OR_SUBDIR(const dir_t* dir) {
|
||||
return (dir->attributes & DIR_ATT_VOLUME_ID) == 0;
|
||||
}
|
||||
#endif // FatStructs_h
|
||||
|
|
@ -0,0 +1,747 @@
|
|||
/* Arduino Sd2Card Library
|
||||
* Copyright (C) 2009 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino Sd2Card Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino Sd2Card Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#if ARDUINO >= 100
|
||||
#include "Arduino.h"
|
||||
#else
|
||||
#include "WProgram.h"
|
||||
#endif
|
||||
#include "Sd2Card.h"
|
||||
//------------------------------------------------------------------------------
|
||||
|
||||
static int8_t mosiPin_, misoPin_, clockPin_;
|
||||
static volatile uint8_t *mosiport, *clkport, *misoport;
|
||||
static uint8_t mosipinmask, clkpinmask, misopinmask;
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
/** nop to tune soft SPI timing */
|
||||
#define nop asm volatile ("nop\n\t")
|
||||
|
||||
#ifndef SOFTWARE_SPI
|
||||
// functions for hardware SPI
|
||||
/** Send a byte to the card */
|
||||
static void spiSend(uint8_t data) {
|
||||
if (clockPin_ == -1) {
|
||||
SPDR = data;
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
} else {
|
||||
cli();
|
||||
// Fast SPI bitbang swiped from LPD8806 library
|
||||
for (uint8_t i = 0; i < 8; i++) {
|
||||
*clkport &= ~clkpinmask;
|
||||
if (data & 0x80)
|
||||
*mosiport |= mosipinmask;
|
||||
else
|
||||
*mosiport &= ~mosipinmask;
|
||||
*clkport |= clkpinmask;
|
||||
data <<= 1;
|
||||
}
|
||||
nop;nop;nop;nop;
|
||||
*clkport &= ~clkpinmask;
|
||||
|
||||
sei();
|
||||
}
|
||||
}
|
||||
|
||||
/** Receive a byte from the card */
|
||||
static uint8_t spiRec(void) {
|
||||
if (clockPin_ == -1) {
|
||||
spiSend(0XFF);
|
||||
return SPDR;
|
||||
} else {
|
||||
uint8_t data = 0;
|
||||
// no interrupts during byte receive - about 8 us
|
||||
cli();
|
||||
// output pin high - like sending 0XFF
|
||||
*mosiport |= mosipinmask;
|
||||
|
||||
for (uint8_t i = 0; i < 8; i++) {
|
||||
*clkport |= clkpinmask;
|
||||
data <<= 1;
|
||||
|
||||
//if (fastDigitalRead(SPI_MISO_PIN)) data |= 1;
|
||||
if ((*misoport) & misopinmask) data |= 1;
|
||||
|
||||
*clkport &= ~clkpinmask;
|
||||
|
||||
// adjust so SCK is nice
|
||||
nop;
|
||||
nop;
|
||||
}
|
||||
// enable interrupts
|
||||
sei();
|
||||
return data;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#else // SOFTWARE_SPI
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
/** Soft SPI receive */
|
||||
uint8_t spiRec(void) {
|
||||
uint8_t data = 0;
|
||||
// no interrupts during byte receive - about 8 us
|
||||
cli();
|
||||
// output pin high - like sending 0XFF
|
||||
fastDigitalWrite(SPI_MOSI_PIN, HIGH);
|
||||
|
||||
for (uint8_t i = 0; i < 8; i++) {
|
||||
fastDigitalWrite(SPI_SCK_PIN, HIGH);
|
||||
|
||||
// adjust so SCK is nice
|
||||
nop;
|
||||
nop;
|
||||
|
||||
data <<= 1;
|
||||
|
||||
if (fastDigitalRead(SPI_MISO_PIN)) data |= 1;
|
||||
|
||||
fastDigitalWrite(SPI_SCK_PIN, LOW);
|
||||
}
|
||||
// enable interrupts
|
||||
sei();
|
||||
return data;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Soft SPI send */
|
||||
void spiSend(uint8_t data) {
|
||||
// no interrupts during byte send - about 8 us
|
||||
cli();
|
||||
for (uint8_t i = 0; i < 8; i++) {
|
||||
fastDigitalWrite(SPI_SCK_PIN, LOW);
|
||||
|
||||
fastDigitalWrite(SPI_MOSI_PIN, data & 0X80);
|
||||
|
||||
data <<= 1;
|
||||
|
||||
fastDigitalWrite(SPI_SCK_PIN, HIGH);
|
||||
}
|
||||
// hold SCK high for a few ns
|
||||
nop;
|
||||
nop;
|
||||
nop;
|
||||
nop;
|
||||
|
||||
fastDigitalWrite(SPI_SCK_PIN, LOW);
|
||||
// enable interrupts
|
||||
sei();
|
||||
}
|
||||
#endif // SOFTWARE_SPI
|
||||
//------------------------------------------------------------------------------
|
||||
// send command and return error code. Return zero for OK
|
||||
uint8_t Sd2Card::cardCommand(uint8_t cmd, uint32_t arg) {
|
||||
// end read if in partialBlockRead mode
|
||||
readEnd();
|
||||
|
||||
// select card
|
||||
chipSelectLow();
|
||||
|
||||
// wait up to 300 ms if busy
|
||||
waitNotBusy(300);
|
||||
|
||||
// send command
|
||||
spiSend(cmd | 0x40);
|
||||
|
||||
// send argument
|
||||
for (int8_t s = 24; s >= 0; s -= 8) spiSend(arg >> s);
|
||||
|
||||
// send CRC
|
||||
uint8_t crc = 0XFF;
|
||||
if (cmd == CMD0) crc = 0X95; // correct crc for CMD0 with arg 0
|
||||
if (cmd == CMD8) crc = 0X87; // correct crc for CMD8 with arg 0X1AA
|
||||
spiSend(crc);
|
||||
|
||||
// wait for response
|
||||
for (uint8_t i = 0; ((status_ = spiRec()) & 0X80) && i != 0XFF; i++);
|
||||
return status_;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Determine the size of an SD flash memory card.
|
||||
*
|
||||
* \return The number of 512 byte data blocks in the card
|
||||
* or zero if an error occurs.
|
||||
*/
|
||||
uint32_t Sd2Card::cardSize(void) {
|
||||
csd_t csd;
|
||||
if (!readCSD(&csd)) return 0;
|
||||
if (csd.v1.csd_ver == 0) {
|
||||
uint8_t read_bl_len = csd.v1.read_bl_len;
|
||||
uint16_t c_size = (csd.v1.c_size_high << 10)
|
||||
| (csd.v1.c_size_mid << 2) | csd.v1.c_size_low;
|
||||
uint8_t c_size_mult = (csd.v1.c_size_mult_high << 1)
|
||||
| csd.v1.c_size_mult_low;
|
||||
return (uint32_t)(c_size + 1) << (c_size_mult + read_bl_len - 7);
|
||||
} else if (csd.v2.csd_ver == 1) {
|
||||
uint32_t c_size = ((uint32_t)csd.v2.c_size_high << 16)
|
||||
| (csd.v2.c_size_mid << 8) | csd.v2.c_size_low;
|
||||
return (c_size + 1) << 10;
|
||||
} else {
|
||||
error(SD_CARD_ERROR_BAD_CSD);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
void Sd2Card::chipSelectHigh(void) {
|
||||
digitalWrite(chipSelectPin_, HIGH);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
void Sd2Card::chipSelectLow(void) {
|
||||
digitalWrite(chipSelectPin_, LOW);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Erase a range of blocks.
|
||||
*
|
||||
* \param[in] firstBlock The address of the first block in the range.
|
||||
* \param[in] lastBlock The address of the last block in the range.
|
||||
*
|
||||
* \note This function requests the SD card to do a flash erase for a
|
||||
* range of blocks. The data on the card after an erase operation is
|
||||
* either 0 or 1, depends on the card vendor. The card must support
|
||||
* single block erase.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
uint8_t Sd2Card::erase(uint32_t firstBlock, uint32_t lastBlock) {
|
||||
if (!eraseSingleBlockEnable()) {
|
||||
error(SD_CARD_ERROR_ERASE_SINGLE_BLOCK);
|
||||
goto fail;
|
||||
}
|
||||
if (type_ != SD_CARD_TYPE_SDHC) {
|
||||
firstBlock <<= 9;
|
||||
lastBlock <<= 9;
|
||||
}
|
||||
if (cardCommand(CMD32, firstBlock)
|
||||
|| cardCommand(CMD33, lastBlock)
|
||||
|| cardCommand(CMD38, 0)) {
|
||||
error(SD_CARD_ERROR_ERASE);
|
||||
goto fail;
|
||||
}
|
||||
if (!waitNotBusy(SD_ERASE_TIMEOUT)) {
|
||||
error(SD_CARD_ERROR_ERASE_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Determine if card supports single block erase.
|
||||
*
|
||||
* \return The value one, true, is returned if single block erase is supported.
|
||||
* The value zero, false, is returned if single block erase is not supported.
|
||||
*/
|
||||
uint8_t Sd2Card::eraseSingleBlockEnable(void) {
|
||||
csd_t csd;
|
||||
return readCSD(&csd) ? csd.v1.erase_blk_en : 0;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Initialize an SD flash memory card.
|
||||
*
|
||||
* \param[in] sckRateID SPI clock rate selector. See setSckRate().
|
||||
* \param[in] chipSelectPin SD chip select pin number.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure. The reason for failure
|
||||
* can be determined by calling errorCode() and errorData().
|
||||
*/
|
||||
uint8_t Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin, int8_t mosiPin, int8_t misoPin, int8_t clockPin) {
|
||||
|
||||
writeCRC_ = errorCode_ = inBlock_ = partialBlockRead_ = type_ = 0;
|
||||
chipSelectPin_ = chipSelectPin;
|
||||
mosiPin_ = mosiPin;
|
||||
misoPin_ = misoPin;
|
||||
clockPin_ = clockPin;
|
||||
// 16-bit init start time allows over a minute
|
||||
uint16_t t0 = (uint16_t)millis();
|
||||
uint32_t arg;
|
||||
|
||||
// set pin modes
|
||||
pinMode(chipSelectPin_, OUTPUT);
|
||||
chipSelectHigh();
|
||||
|
||||
if (clockPin != -1) {
|
||||
// use slow bitbang mode
|
||||
pinMode(misoPin_, INPUT);
|
||||
pinMode(mosiPin_, OUTPUT);
|
||||
pinMode(clockPin_, OUTPUT);
|
||||
clkport = portOutputRegister(digitalPinToPort(clockPin_));
|
||||
clkpinmask = digitalPinToBitMask(clockPin_);
|
||||
mosiport = portOutputRegister(digitalPinToPort(mosiPin_));
|
||||
mosipinmask = digitalPinToBitMask(mosiPin_);
|
||||
misoport = portInputRegister(digitalPinToPort(misoPin_));
|
||||
misopinmask = digitalPinToBitMask(misoPin_);
|
||||
} else {
|
||||
pinMode(SPI_MISO_PIN, INPUT);
|
||||
pinMode(SPI_MOSI_PIN, OUTPUT);
|
||||
pinMode(SPI_SCK_PIN, OUTPUT);
|
||||
|
||||
#ifndef SOFTWARE_SPI
|
||||
// SS must be in output mode even it is not chip select
|
||||
pinMode(SS_PIN, OUTPUT);
|
||||
digitalWrite(SS_PIN, HIGH); // disable any SPI device using hardware SS pin
|
||||
// Enable SPI, Master, clock rate f_osc/128
|
||||
SPCR = (1 << SPE) | (1 << MSTR) | (1 << SPR1) | (1 << SPR0);
|
||||
// clear double speed
|
||||
SPSR &= ~(1 << SPI2X);
|
||||
#endif // SOFTWARE_SPI
|
||||
}
|
||||
|
||||
// must supply min of 74 clock cycles with CS high.
|
||||
for (uint8_t i = 0; i < 10; i++) spiSend(0XFF);
|
||||
|
||||
chipSelectLow();
|
||||
|
||||
// command to go idle in SPI mode
|
||||
while ((status_ = cardCommand(CMD0, 0)) != R1_IDLE_STATE) {
|
||||
if (((uint16_t)millis() - t0) > SD_INIT_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_CMD0);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
// check SD version
|
||||
if ((cardCommand(CMD8, 0x1AA) & R1_ILLEGAL_COMMAND)) {
|
||||
type(SD_CARD_TYPE_SD1);
|
||||
} else {
|
||||
// only need last byte of r7 response
|
||||
for (uint8_t i = 0; i < 4; i++) status_ = spiRec();
|
||||
if (status_ != 0XAA) {
|
||||
error(SD_CARD_ERROR_CMD8);
|
||||
goto fail;
|
||||
}
|
||||
type(SD_CARD_TYPE_SD2);
|
||||
}
|
||||
// initialize card and send host supports SDHC if SD2
|
||||
arg = type() == SD_CARD_TYPE_SD2 ? 0X40000000 : 0;
|
||||
|
||||
while ((status_ = cardAcmd(ACMD41, arg)) != R1_READY_STATE) {
|
||||
// check for timeout
|
||||
if (((uint16_t)millis() - t0) > SD_INIT_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_ACMD41);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
// if SD2 read OCR register to check for SDHC card
|
||||
if (type() == SD_CARD_TYPE_SD2) {
|
||||
if (cardCommand(CMD58, 0)) {
|
||||
error(SD_CARD_ERROR_CMD58);
|
||||
goto fail;
|
||||
}
|
||||
if ((spiRec() & 0XC0) == 0XC0) type(SD_CARD_TYPE_SDHC);
|
||||
// discard rest of ocr - contains allowed voltage range
|
||||
for (uint8_t i = 0; i < 3; i++) spiRec();
|
||||
}
|
||||
chipSelectHigh();
|
||||
|
||||
#ifndef SOFTWARE_SPI
|
||||
if (clockPin_ == -1)
|
||||
return setSckRate(sckRateID);
|
||||
else
|
||||
return true;
|
||||
#else // SOFTWARE_SPI
|
||||
return true;
|
||||
#endif // SOFTWARE_SPI
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Enable or disable partial block reads.
|
||||
*
|
||||
* Enabling partial block reads improves performance by allowing a block
|
||||
* to be read over the SPI bus as several sub-blocks. Errors may occur
|
||||
* if the time between reads is too long since the SD card may timeout.
|
||||
* The SPI SS line will be held low until the entire block is read or
|
||||
* readEnd() is called.
|
||||
*
|
||||
* Use this for applications like the Adafruit Wave Shield.
|
||||
*
|
||||
* \param[in] value The value TRUE (non-zero) or FALSE (zero).)
|
||||
*/
|
||||
void Sd2Card::partialBlockRead(uint8_t value) {
|
||||
readEnd();
|
||||
partialBlockRead_ = value;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Read a 512 byte block from an SD card device.
|
||||
*
|
||||
* \param[in] block Logical block to be read.
|
||||
* \param[out] dst Pointer to the location that will receive the data.
|
||||
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
uint8_t Sd2Card::readBlock(uint32_t block, uint8_t* dst) {
|
||||
return readData(block, 0, 512, dst);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Read part of a 512 byte block from an SD card.
|
||||
*
|
||||
* \param[in] block Logical block to be read.
|
||||
* \param[in] offset Number of bytes to skip at start of block
|
||||
* \param[out] dst Pointer to the location that will receive the data.
|
||||
* \param[in] count Number of bytes to read
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
uint8_t Sd2Card::readData(uint32_t block,
|
||||
uint16_t offset, uint16_t count, uint8_t* dst) {
|
||||
uint16_t n;
|
||||
if (count == 0) return true;
|
||||
if ((count + offset) > 512) {
|
||||
goto fail;
|
||||
}
|
||||
if (!inBlock_ || block != block_ || offset < offset_) {
|
||||
block_ = block;
|
||||
// use address if not SDHC card
|
||||
if (type()!= SD_CARD_TYPE_SDHC) block <<= 9;
|
||||
if (cardCommand(CMD17, block)) {
|
||||
error(SD_CARD_ERROR_CMD17);
|
||||
goto fail;
|
||||
}
|
||||
if (!waitStartBlock()) {
|
||||
goto fail;
|
||||
}
|
||||
offset_ = 0;
|
||||
inBlock_ = 1;
|
||||
}
|
||||
|
||||
#ifdef OPTIMIZE_HARDWARE_SPI
|
||||
// start first spi transfer
|
||||
SPDR = 0XFF;
|
||||
|
||||
// skip data before offset
|
||||
for (;offset_ < offset; offset_++) {
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
SPDR = 0XFF;
|
||||
}
|
||||
// transfer data
|
||||
n = count - 1;
|
||||
for (uint16_t i = 0; i < n; i++) {
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
dst[i] = SPDR;
|
||||
SPDR = 0XFF;
|
||||
}
|
||||
// wait for last byte
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
dst[n] = SPDR;
|
||||
|
||||
#else // OPTIMIZE_HARDWARE_SPI
|
||||
|
||||
// skip data before offset
|
||||
for (;offset_ < offset; offset_++) {
|
||||
spiRec();
|
||||
}
|
||||
// transfer data
|
||||
for (uint16_t i = 0; i < count; i++) {
|
||||
dst[i] = spiRec();
|
||||
}
|
||||
#endif // OPTIMIZE_HARDWARE_SPI
|
||||
|
||||
offset_ += count;
|
||||
if (!partialBlockRead_ || offset_ >= 512) {
|
||||
// read rest of data, checksum and set chip select high
|
||||
readEnd();
|
||||
}
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Skip remaining data in a block when in partial block read mode. */
|
||||
void Sd2Card::readEnd(void) {
|
||||
if (inBlock_) {
|
||||
// skip data and crc
|
||||
#ifdef OPTIMIZE_HARDWARE_SPI
|
||||
// optimize skip for hardware
|
||||
SPDR = 0XFF;
|
||||
while (offset_++ < 513) {
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
SPDR = 0XFF;
|
||||
}
|
||||
// Wait for last CRC byte
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
#else // OPTIMIZE_HARDWARE_SPI
|
||||
while (offset_++ < 514) spiRec();
|
||||
#endif // OPTIMIZE_HARDWARE_SPI
|
||||
chipSelectHigh();
|
||||
inBlock_ = 0;
|
||||
}
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** read CID or CSR register */
|
||||
uint8_t Sd2Card::readRegister(uint8_t cmd, void* buf) {
|
||||
uint8_t* dst = reinterpret_cast<uint8_t*>(buf);
|
||||
if (cardCommand(cmd, 0)) {
|
||||
error(SD_CARD_ERROR_READ_REG);
|
||||
goto fail;
|
||||
}
|
||||
if (!waitStartBlock()) goto fail;
|
||||
// transfer data
|
||||
for (uint16_t i = 0; i < 16; i++) dst[i] = spiRec();
|
||||
spiRec(); // get first crc byte
|
||||
spiRec(); // get second crc byte
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Set the SPI clock rate.
|
||||
*
|
||||
* \param[in] sckRateID A value in the range [0, 6].
|
||||
*
|
||||
* The SPI clock will be set to F_CPU/pow(2, 1 + sckRateID). The maximum
|
||||
* SPI rate is F_CPU/2 for \a sckRateID = 0 and the minimum rate is F_CPU/128
|
||||
* for \a scsRateID = 6.
|
||||
*
|
||||
* \return The value one, true, is returned for success and the value zero,
|
||||
* false, is returned for an invalid value of \a sckRateID.
|
||||
*/
|
||||
uint8_t Sd2Card::setSckRate(uint8_t sckRateID) {
|
||||
if (sckRateID > 6) {
|
||||
error(SD_CARD_ERROR_SCK_RATE);
|
||||
return false;
|
||||
}
|
||||
// see avr processor datasheet for SPI register bit definitions
|
||||
if ((sckRateID & 1) || sckRateID == 6) {
|
||||
SPSR &= ~(1 << SPI2X);
|
||||
} else {
|
||||
SPSR |= (1 << SPI2X);
|
||||
}
|
||||
SPCR &= ~((1 <<SPR1) | (1 << SPR0));
|
||||
SPCR |= (sckRateID & 4 ? (1 << SPR1) : 0)
|
||||
| (sckRateID & 2 ? (1 << SPR0) : 0);
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// wait for card to go not busy
|
||||
uint8_t Sd2Card::waitNotBusy(uint16_t timeoutMillis) {
|
||||
uint16_t t0 = millis();
|
||||
do {
|
||||
if (spiRec() == 0XFF) return true;
|
||||
}
|
||||
while (((uint16_t)millis() - t0) < timeoutMillis);
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Wait for start block token */
|
||||
uint8_t Sd2Card::waitStartBlock(void) {
|
||||
uint16_t t0 = millis();
|
||||
while ((status_ = spiRec()) == 0XFF) {
|
||||
if (((uint16_t)millis() - t0) > SD_READ_TIMEOUT) {
|
||||
error(SD_CARD_ERROR_READ_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
if (status_ != DATA_START_BLOCK) {
|
||||
error(SD_CARD_ERROR_READ);
|
||||
goto fail;
|
||||
}
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Writes a 512 byte block to an SD card.
|
||||
*
|
||||
* \param[in] blockNumber Logical block to be written.
|
||||
* \param[in] src Pointer to the location of the data to be written.
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
uint8_t Sd2Card::writeBlock(uint32_t blockNumber, const uint8_t* src) {
|
||||
#if SD_PROTECT_BLOCK_ZERO
|
||||
// don't allow write to first block
|
||||
if (blockNumber == 0) {
|
||||
error(SD_CARD_ERROR_WRITE_BLOCK_ZERO);
|
||||
goto fail;
|
||||
}
|
||||
#endif // SD_PROTECT_BLOCK_ZERO
|
||||
|
||||
// use address if not SDHC card
|
||||
if (type() != SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD24, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD24);
|
||||
goto fail;
|
||||
}
|
||||
if (!writeData(DATA_START_BLOCK, src)) goto fail;
|
||||
|
||||
// wait for flash programming to complete
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
|
||||
error(SD_CARD_ERROR_WRITE_TIMEOUT);
|
||||
goto fail;
|
||||
}
|
||||
// response is r2 so get and check two bytes for nonzero
|
||||
if (cardCommand(CMD13, 0) || spiRec()) {
|
||||
error(SD_CARD_ERROR_WRITE_PROGRAMMING);
|
||||
goto fail;
|
||||
}
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Write one data block in a multiple block write sequence */
|
||||
uint8_t Sd2Card::writeData(const uint8_t* src) {
|
||||
// wait for previous write to finish
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
|
||||
error(SD_CARD_ERROR_WRITE_MULTIPLE);
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
return writeData(WRITE_MULTIPLE_TOKEN, src);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// send one block of data for write block or write multiple blocks
|
||||
uint8_t Sd2Card::writeData(uint8_t token, const uint8_t* src) {
|
||||
|
||||
// CRC16 checksum is supposed to be ignored in SPI mode (unless
|
||||
// explicitly enabled) and a dummy value is normally written.
|
||||
// A few funny cards (e.g. Eye-Fi X2) expect a valid CRC anyway.
|
||||
// Call setCRC(true) to enable CRC16 checksum on block writes.
|
||||
// This has a noticeable impact on write speed. :(
|
||||
int16_t crc;
|
||||
if(writeCRC_) {
|
||||
int16_t i, x;
|
||||
// CRC16 code via Scott Dattalo www.dattalo.com
|
||||
for(crc=i=0; i<512; i++) {
|
||||
x = ((crc >> 8) ^ src[i]) & 0xff;
|
||||
x ^= x >> 4;
|
||||
crc = (crc << 8) ^ (x << 12) ^ (x << 5) ^ x;
|
||||
}
|
||||
} else {
|
||||
crc = 0xffff; // Dummy CRC value
|
||||
}
|
||||
|
||||
#ifdef OPTIMIZE_HARDWARE_SPI
|
||||
|
||||
// send data - optimized loop
|
||||
SPDR = token;
|
||||
|
||||
// send two byte per iteration
|
||||
for (uint16_t i = 0; i < 512; i += 2) {
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
SPDR = src[i];
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
SPDR = src[i+1];
|
||||
}
|
||||
|
||||
// wait for last data byte
|
||||
while (!(SPSR & (1 << SPIF)));
|
||||
|
||||
#else // OPTIMIZE_HARDWARE_SPI
|
||||
spiSend(token);
|
||||
for (uint16_t i = 0; i < 512; i++) {
|
||||
spiSend(src[i]);
|
||||
}
|
||||
#endif // OPTIMIZE_HARDWARE_SPI
|
||||
|
||||
spiSend(crc >> 8); // Might be dummy value, that's OK
|
||||
spiSend(crc);
|
||||
|
||||
status_ = spiRec();
|
||||
if ((status_ & DATA_RES_MASK) != DATA_RES_ACCEPTED) {
|
||||
error(SD_CARD_ERROR_WRITE);
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** Start a write multiple blocks sequence.
|
||||
*
|
||||
* \param[in] blockNumber Address of first block in sequence.
|
||||
* \param[in] eraseCount The number of blocks to be pre-erased.
|
||||
*
|
||||
* \note This function is used with writeData() and writeStop()
|
||||
* for optimized multiple block writes.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
uint8_t Sd2Card::writeStart(uint32_t blockNumber, uint32_t eraseCount) {
|
||||
#if SD_PROTECT_BLOCK_ZERO
|
||||
// don't allow write to first block
|
||||
if (blockNumber == 0) {
|
||||
error(SD_CARD_ERROR_WRITE_BLOCK_ZERO);
|
||||
goto fail;
|
||||
}
|
||||
#endif // SD_PROTECT_BLOCK_ZERO
|
||||
// send pre-erase count
|
||||
if (cardAcmd(ACMD23, eraseCount)) {
|
||||
error(SD_CARD_ERROR_ACMD23);
|
||||
goto fail;
|
||||
}
|
||||
// use address if not SDHC card
|
||||
if (type() != SD_CARD_TYPE_SDHC) blockNumber <<= 9;
|
||||
if (cardCommand(CMD25, blockNumber)) {
|
||||
error(SD_CARD_ERROR_CMD25);
|
||||
goto fail;
|
||||
}
|
||||
return true;
|
||||
|
||||
fail:
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/** End a write multiple blocks sequence.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure.
|
||||
*/
|
||||
uint8_t Sd2Card::writeStop(void) {
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
|
||||
spiSend(STOP_TRAN_TOKEN);
|
||||
if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
|
||||
chipSelectHigh();
|
||||
return true;
|
||||
|
||||
fail:
|
||||
error(SD_CARD_ERROR_STOP_TRAN);
|
||||
chipSelectHigh();
|
||||
return false;
|
||||
}
|
||||
|
||||
void Sd2Card::enableCRC(uint8_t mode) {
|
||||
writeCRC_ = mode;
|
||||
}
|
||||
|
||||
253
Universal_Serial_Adapter/Libraries/Adafruit-SD/utility/Sd2Card.h
Normal file
253
Universal_Serial_Adapter/Libraries/Adafruit-SD/utility/Sd2Card.h
Normal file
|
|
@ -0,0 +1,253 @@
|
|||
/* Arduino Sd2Card Library
|
||||
* Copyright (C) 2009 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino Sd2Card Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino Sd2Card Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef Sd2Card_h
|
||||
#define Sd2Card_h
|
||||
/**
|
||||
* \file
|
||||
* Sd2Card class
|
||||
*/
|
||||
#include "Sd2PinMap.h"
|
||||
#include "SdInfo.h"
|
||||
/** Set SCK to max rate of F_CPU/2. See Sd2Card::setSckRate(). */
|
||||
uint8_t const SPI_FULL_SPEED = 0;
|
||||
/** Set SCK rate to F_CPU/4. See Sd2Card::setSckRate(). */
|
||||
uint8_t const SPI_HALF_SPEED = 1;
|
||||
/** Set SCK rate to F_CPU/8. Sd2Card::setSckRate(). */
|
||||
uint8_t const SPI_QUARTER_SPEED = 2;
|
||||
|
||||
/**
|
||||
* Define MEGA_SOFT_SPI non-zero to use software SPI on Mega Arduinos.
|
||||
* Pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
|
||||
*
|
||||
* MEGA_SOFT_SPI allows an unmodified Adafruit GPS Shield to be used
|
||||
* on Mega Arduinos. Software SPI works well with GPS Shield V1.1
|
||||
* but many SD cards will fail with GPS Shield V1.0.
|
||||
*/
|
||||
#define MEGA_SOFT_SPI 0
|
||||
|
||||
/**
|
||||
* Define LEO_SOFT_SPI non-zero to use software SPI on Leonardo Arduinos.
|
||||
* Pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
|
||||
*
|
||||
* LEO_SOFT_SPI allows an unmodified Adafruit GPS Shield to be used
|
||||
* on Leonardo Arduinos. Software SPI works well with GPS Shield V1.1
|
||||
* but many SD cards will fail with GPS Shield V1.0.
|
||||
*/
|
||||
#define LEO_SOFT_SPI 0
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
#if MEGA_SOFT_SPI && (defined(__AVR_ATmega1280__)||defined(__AVR_ATmega2560__))
|
||||
#define SOFTWARE_SPI
|
||||
#endif // MEGA_SOFT_SPI
|
||||
//------------------------------------------------------------------------------
|
||||
#if LEO_SOFT_SPI && (defined(__AVR_ATmega32U4__))
|
||||
#define SOFTWARE_SPI
|
||||
#endif // LEO_SOFT_SPI
|
||||
//------------------------------------------------------------------------------
|
||||
// SPI pin definitions
|
||||
//
|
||||
#ifndef SOFTWARE_SPI
|
||||
// hardware pin defs
|
||||
/**
|
||||
* SD Chip Select pin
|
||||
*
|
||||
* Warning if this pin is redefined the hardware SS will pin will be enabled
|
||||
* as an output by init(). An avr processor will not function as an SPI
|
||||
* master unless SS is set to output mode.
|
||||
*/
|
||||
/** The default chip select pin for the SD card is SS. */
|
||||
uint8_t const SD_CHIP_SELECT_PIN = SS_PIN;
|
||||
// The following three pins must not be redefined for hardware SPI.
|
||||
/** SPI Master Out Slave In pin */
|
||||
uint8_t const SPI_MOSI_PIN = MOSI_PIN;
|
||||
/** SPI Master In Slave Out pin */
|
||||
uint8_t const SPI_MISO_PIN = MISO_PIN;
|
||||
/** SPI Clock pin */
|
||||
uint8_t const SPI_SCK_PIN = SCK_PIN;
|
||||
/** optimize loops for hardware SPI */
|
||||
//#define OPTIMIZE_HARDWARE_SPI // MEME FIX ME LATER
|
||||
|
||||
#else // SOFTWARE_SPI
|
||||
// define software SPI pins so Mega/Leonardo can use unmodified GPS Shield
|
||||
/** SPI chip select pin */
|
||||
uint8_t const SD_CHIP_SELECT_PIN = 10;
|
||||
/** SPI Master Out Slave In pin */
|
||||
uint8_t const SPI_MOSI_PIN = 11;
|
||||
/** SPI Master In Slave Out pin */
|
||||
uint8_t const SPI_MISO_PIN = 12;
|
||||
/** SPI Clock pin */
|
||||
uint8_t const SPI_SCK_PIN = 13;
|
||||
#endif // SOFTWARE_SPI
|
||||
//------------------------------------------------------------------------------
|
||||
/** Protect block zero from write if nonzero */
|
||||
#define SD_PROTECT_BLOCK_ZERO 1
|
||||
/** init timeout ms */
|
||||
uint16_t const SD_INIT_TIMEOUT = 2000;
|
||||
/** erase timeout ms */
|
||||
uint16_t const SD_ERASE_TIMEOUT = 10000;
|
||||
/** read timeout ms */
|
||||
uint16_t const SD_READ_TIMEOUT = 300;
|
||||
/** write time out ms */
|
||||
uint16_t const SD_WRITE_TIMEOUT = 600;
|
||||
//------------------------------------------------------------------------------
|
||||
// SD card errors
|
||||
/** timeout error for command CMD0 */
|
||||
uint8_t const SD_CARD_ERROR_CMD0 = 0X1;
|
||||
/** CMD8 was not accepted - not a valid SD card*/
|
||||
uint8_t const SD_CARD_ERROR_CMD8 = 0X2;
|
||||
/** card returned an error response for CMD17 (read block) */
|
||||
uint8_t const SD_CARD_ERROR_CMD17 = 0X3;
|
||||
/** card returned an error response for CMD24 (write block) */
|
||||
uint8_t const SD_CARD_ERROR_CMD24 = 0X4;
|
||||
/** WRITE_MULTIPLE_BLOCKS command failed */
|
||||
uint8_t const SD_CARD_ERROR_CMD25 = 0X05;
|
||||
/** card returned an error response for CMD58 (read OCR) */
|
||||
uint8_t const SD_CARD_ERROR_CMD58 = 0X06;
|
||||
/** SET_WR_BLK_ERASE_COUNT failed */
|
||||
uint8_t const SD_CARD_ERROR_ACMD23 = 0X07;
|
||||
/** card's ACMD41 initialization process timeout */
|
||||
uint8_t const SD_CARD_ERROR_ACMD41 = 0X08;
|
||||
/** card returned a bad CSR version field */
|
||||
uint8_t const SD_CARD_ERROR_BAD_CSD = 0X09;
|
||||
/** erase block group command failed */
|
||||
uint8_t const SD_CARD_ERROR_ERASE = 0X0A;
|
||||
/** card not capable of single block erase */
|
||||
uint8_t const SD_CARD_ERROR_ERASE_SINGLE_BLOCK = 0X0B;
|
||||
/** Erase sequence timed out */
|
||||
uint8_t const SD_CARD_ERROR_ERASE_TIMEOUT = 0X0C;
|
||||
/** card returned an error token instead of read data */
|
||||
uint8_t const SD_CARD_ERROR_READ = 0X0D;
|
||||
/** read CID or CSD failed */
|
||||
uint8_t const SD_CARD_ERROR_READ_REG = 0X0E;
|
||||
/** timeout while waiting for start of read data */
|
||||
uint8_t const SD_CARD_ERROR_READ_TIMEOUT = 0X0F;
|
||||
/** card did not accept STOP_TRAN_TOKEN */
|
||||
uint8_t const SD_CARD_ERROR_STOP_TRAN = 0X10;
|
||||
/** card returned an error token as a response to a write operation */
|
||||
uint8_t const SD_CARD_ERROR_WRITE = 0X11;
|
||||
/** attempt to write protected block zero */
|
||||
uint8_t const SD_CARD_ERROR_WRITE_BLOCK_ZERO = 0X12;
|
||||
/** card did not go ready for a multiple block write */
|
||||
uint8_t const SD_CARD_ERROR_WRITE_MULTIPLE = 0X13;
|
||||
/** card returned an error to a CMD13 status check after a write */
|
||||
uint8_t const SD_CARD_ERROR_WRITE_PROGRAMMING = 0X14;
|
||||
/** timeout occurred during write programming */
|
||||
uint8_t const SD_CARD_ERROR_WRITE_TIMEOUT = 0X15;
|
||||
/** incorrect rate selected */
|
||||
uint8_t const SD_CARD_ERROR_SCK_RATE = 0X16;
|
||||
//------------------------------------------------------------------------------
|
||||
// card types
|
||||
/** Standard capacity V1 SD card */
|
||||
uint8_t const SD_CARD_TYPE_SD1 = 1;
|
||||
/** Standard capacity V2 SD card */
|
||||
uint8_t const SD_CARD_TYPE_SD2 = 2;
|
||||
/** High Capacity SD card */
|
||||
uint8_t const SD_CARD_TYPE_SDHC = 3;
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* \class Sd2Card
|
||||
* \brief Raw access to SD and SDHC flash memory cards.
|
||||
*/
|
||||
class Sd2Card {
|
||||
public:
|
||||
/** Construct an instance of Sd2Card. */
|
||||
Sd2Card(void) : errorCode_(0), inBlock_(0), partialBlockRead_(0), type_(0) {}
|
||||
uint32_t cardSize(void);
|
||||
uint8_t erase(uint32_t firstBlock, uint32_t lastBlock);
|
||||
uint8_t eraseSingleBlockEnable(void);
|
||||
/**
|
||||
* \return error code for last error. See Sd2Card.h for a list of error codes.
|
||||
*/
|
||||
uint8_t errorCode(void) const {return errorCode_;}
|
||||
/** \return error data for last error. */
|
||||
uint8_t errorData(void) const {return status_;}
|
||||
/**
|
||||
* Initialize an SD flash memory card with default clock rate and chip
|
||||
* select pin. See sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin).
|
||||
*/
|
||||
uint8_t init(void) {
|
||||
return init(SPI_FULL_SPEED, SD_CHIP_SELECT_PIN);
|
||||
}
|
||||
/**
|
||||
* Initialize an SD flash memory card with the selected SPI clock rate
|
||||
* and the default SD chip select pin.
|
||||
* See sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin).
|
||||
*/
|
||||
uint8_t init(uint8_t sckRateID) {
|
||||
return init(sckRateID, SD_CHIP_SELECT_PIN);
|
||||
}
|
||||
uint8_t init(uint8_t sckRateID, uint8_t chipSelectPin, int8_t mosiPin = -1, int8_t misoPin = -1, int8_t clockPin = -1);
|
||||
void partialBlockRead(uint8_t value);
|
||||
/** Returns the current value, true or false, for partial block read. */
|
||||
uint8_t partialBlockRead(void) const {return partialBlockRead_;}
|
||||
uint8_t readBlock(uint32_t block, uint8_t* dst);
|
||||
uint8_t readData(uint32_t block,
|
||||
uint16_t offset, uint16_t count, uint8_t* dst);
|
||||
/**
|
||||
* Read a cards CID register. The CID contains card identification
|
||||
* information such as Manufacturer ID, Product name, Product serial
|
||||
* number and Manufacturing date. */
|
||||
uint8_t readCID(cid_t* cid) {
|
||||
return readRegister(CMD10, cid);
|
||||
}
|
||||
/**
|
||||
* Read a cards CSD register. The CSD contains Card-Specific Data that
|
||||
* provides information regarding access to the card's contents. */
|
||||
uint8_t readCSD(csd_t* csd) {
|
||||
return readRegister(CMD9, csd);
|
||||
}
|
||||
void readEnd(void);
|
||||
uint8_t setSckRate(uint8_t sckRateID);
|
||||
/** Return the card type: SD V1, SD V2 or SDHC */
|
||||
uint8_t type(void) const {return type_;}
|
||||
uint8_t writeBlock(uint32_t blockNumber, const uint8_t* src);
|
||||
uint8_t writeData(const uint8_t* src);
|
||||
uint8_t writeStart(uint32_t blockNumber, uint32_t eraseCount);
|
||||
uint8_t writeStop(void);
|
||||
void enableCRC(uint8_t mode);
|
||||
|
||||
private:
|
||||
uint32_t block_;
|
||||
uint8_t chipSelectPin_;
|
||||
uint8_t errorCode_;
|
||||
uint8_t inBlock_;
|
||||
uint16_t offset_;
|
||||
uint8_t partialBlockRead_;
|
||||
uint8_t status_;
|
||||
uint8_t type_;
|
||||
uint8_t writeCRC_;
|
||||
|
||||
// private functions
|
||||
uint8_t cardAcmd(uint8_t cmd, uint32_t arg) {
|
||||
cardCommand(CMD55, 0);
|
||||
return cardCommand(cmd, arg);
|
||||
}
|
||||
uint8_t cardCommand(uint8_t cmd, uint32_t arg);
|
||||
void error(uint8_t code) {errorCode_ = code;}
|
||||
uint8_t readRegister(uint8_t cmd, void* buf);
|
||||
uint8_t sendWriteCommand(uint32_t blockNumber, uint32_t eraseCount);
|
||||
void chipSelectHigh(void);
|
||||
void chipSelectLow(void);
|
||||
void type(uint8_t value) {type_ = value;}
|
||||
uint8_t waitNotBusy(uint16_t timeoutMillis);
|
||||
uint8_t writeData(uint8_t token, const uint8_t* src);
|
||||
uint8_t waitStartBlock(void);
|
||||
};
|
||||
#endif // Sd2Card_h
|
||||
|
|
@ -0,0 +1,360 @@
|
|||
/* Arduino SdFat Library
|
||||
* Copyright (C) 2010 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino SdFat Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino SdFat Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
// Warning this file was generated by a program.
|
||||
#ifndef Sd2PinMap_h
|
||||
#define Sd2PinMap_h
|
||||
#include <avr/io.h>
|
||||
|
||||
#if (ARDUINO >= 100)
|
||||
#include "Arduino.h"
|
||||
#endif
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
/** struct for mapping digital pins */
|
||||
struct pin_map_t {
|
||||
volatile uint8_t* ddr;
|
||||
volatile uint8_t* pin;
|
||||
volatile uint8_t* port;
|
||||
uint8_t bit;
|
||||
};
|
||||
//------------------------------------------------------------------------------
|
||||
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
|
||||
// Mega
|
||||
|
||||
// Two Wire (aka I2C) ports
|
||||
uint8_t const SDA_PIN = 20;
|
||||
uint8_t const SCL_PIN = 21;
|
||||
|
||||
// SPI port
|
||||
uint8_t const SS_PIN = 53;
|
||||
uint8_t const MOSI_PIN = 51;
|
||||
uint8_t const MISO_PIN = 50;
|
||||
uint8_t const SCK_PIN = 52;
|
||||
|
||||
static const pin_map_t digitalPinMap[] = {
|
||||
{&DDRE, &PINE, &PORTE, 0}, // E0 0
|
||||
{&DDRE, &PINE, &PORTE, 1}, // E1 1
|
||||
{&DDRE, &PINE, &PORTE, 4}, // E4 2
|
||||
{&DDRE, &PINE, &PORTE, 5}, // E5 3
|
||||
{&DDRG, &PING, &PORTG, 5}, // G5 4
|
||||
{&DDRE, &PINE, &PORTE, 3}, // E3 5
|
||||
{&DDRH, &PINH, &PORTH, 3}, // H3 6
|
||||
{&DDRH, &PINH, &PORTH, 4}, // H4 7
|
||||
{&DDRH, &PINH, &PORTH, 5}, // H5 8
|
||||
{&DDRH, &PINH, &PORTH, 6}, // H6 9
|
||||
{&DDRB, &PINB, &PORTB, 4}, // B4 10
|
||||
{&DDRB, &PINB, &PORTB, 5}, // B5 11
|
||||
{&DDRB, &PINB, &PORTB, 6}, // B6 12
|
||||
{&DDRB, &PINB, &PORTB, 7}, // B7 13
|
||||
{&DDRJ, &PINJ, &PORTJ, 1}, // J1 14
|
||||
{&DDRJ, &PINJ, &PORTJ, 0}, // J0 15
|
||||
{&DDRH, &PINH, &PORTH, 1}, // H1 16
|
||||
{&DDRH, &PINH, &PORTH, 0}, // H0 17
|
||||
{&DDRD, &PIND, &PORTD, 3}, // D3 18
|
||||
{&DDRD, &PIND, &PORTD, 2}, // D2 19
|
||||
{&DDRD, &PIND, &PORTD, 1}, // D1 20
|
||||
{&DDRD, &PIND, &PORTD, 0}, // D0 21
|
||||
{&DDRA, &PINA, &PORTA, 0}, // A0 22
|
||||
{&DDRA, &PINA, &PORTA, 1}, // A1 23
|
||||
{&DDRA, &PINA, &PORTA, 2}, // A2 24
|
||||
{&DDRA, &PINA, &PORTA, 3}, // A3 25
|
||||
{&DDRA, &PINA, &PORTA, 4}, // A4 26
|
||||
{&DDRA, &PINA, &PORTA, 5}, // A5 27
|
||||
{&DDRA, &PINA, &PORTA, 6}, // A6 28
|
||||
{&DDRA, &PINA, &PORTA, 7}, // A7 29
|
||||
{&DDRC, &PINC, &PORTC, 7}, // C7 30
|
||||
{&DDRC, &PINC, &PORTC, 6}, // C6 31
|
||||
{&DDRC, &PINC, &PORTC, 5}, // C5 32
|
||||
{&DDRC, &PINC, &PORTC, 4}, // C4 33
|
||||
{&DDRC, &PINC, &PORTC, 3}, // C3 34
|
||||
{&DDRC, &PINC, &PORTC, 2}, // C2 35
|
||||
{&DDRC, &PINC, &PORTC, 1}, // C1 36
|
||||
{&DDRC, &PINC, &PORTC, 0}, // C0 37
|
||||
{&DDRD, &PIND, &PORTD, 7}, // D7 38
|
||||
{&DDRG, &PING, &PORTG, 2}, // G2 39
|
||||
{&DDRG, &PING, &PORTG, 1}, // G1 40
|
||||
{&DDRG, &PING, &PORTG, 0}, // G0 41
|
||||
{&DDRL, &PINL, &PORTL, 7}, // L7 42
|
||||
{&DDRL, &PINL, &PORTL, 6}, // L6 43
|
||||
{&DDRL, &PINL, &PORTL, 5}, // L5 44
|
||||
{&DDRL, &PINL, &PORTL, 4}, // L4 45
|
||||
{&DDRL, &PINL, &PORTL, 3}, // L3 46
|
||||
{&DDRL, &PINL, &PORTL, 2}, // L2 47
|
||||
{&DDRL, &PINL, &PORTL, 1}, // L1 48
|
||||
{&DDRL, &PINL, &PORTL, 0}, // L0 49
|
||||
{&DDRB, &PINB, &PORTB, 3}, // B3 50
|
||||
{&DDRB, &PINB, &PORTB, 2}, // B2 51
|
||||
{&DDRB, &PINB, &PORTB, 1}, // B1 52
|
||||
{&DDRB, &PINB, &PORTB, 0}, // B0 53
|
||||
{&DDRF, &PINF, &PORTF, 0}, // F0 54
|
||||
{&DDRF, &PINF, &PORTF, 1}, // F1 55
|
||||
{&DDRF, &PINF, &PORTF, 2}, // F2 56
|
||||
{&DDRF, &PINF, &PORTF, 3}, // F3 57
|
||||
{&DDRF, &PINF, &PORTF, 4}, // F4 58
|
||||
{&DDRF, &PINF, &PORTF, 5}, // F5 59
|
||||
{&DDRF, &PINF, &PORTF, 6}, // F6 60
|
||||
{&DDRF, &PINF, &PORTF, 7}, // F7 61
|
||||
{&DDRK, &PINK, &PORTK, 0}, // K0 62
|
||||
{&DDRK, &PINK, &PORTK, 1}, // K1 63
|
||||
{&DDRK, &PINK, &PORTK, 2}, // K2 64
|
||||
{&DDRK, &PINK, &PORTK, 3}, // K3 65
|
||||
{&DDRK, &PINK, &PORTK, 4}, // K4 66
|
||||
{&DDRK, &PINK, &PORTK, 5}, // K5 67
|
||||
{&DDRK, &PINK, &PORTK, 6}, // K6 68
|
||||
{&DDRK, &PINK, &PORTK, 7} // K7 69
|
||||
};
|
||||
//------------------------------------------------------------------------------
|
||||
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
|
||||
// Sanguino
|
||||
|
||||
// Two Wire (aka I2C) ports
|
||||
uint8_t const SDA_PIN = 17;
|
||||
uint8_t const SCL_PIN = 18;
|
||||
|
||||
// SPI port
|
||||
uint8_t const SS_PIN = 4;
|
||||
uint8_t const MOSI_PIN = 5;
|
||||
uint8_t const MISO_PIN = 6;
|
||||
uint8_t const SCK_PIN = 7;
|
||||
|
||||
static const pin_map_t digitalPinMap[] = {
|
||||
{&DDRB, &PINB, &PORTB, 0}, // B0 0
|
||||
{&DDRB, &PINB, &PORTB, 1}, // B1 1
|
||||
{&DDRB, &PINB, &PORTB, 2}, // B2 2
|
||||
{&DDRB, &PINB, &PORTB, 3}, // B3 3
|
||||
{&DDRB, &PINB, &PORTB, 4}, // B4 4
|
||||
{&DDRB, &PINB, &PORTB, 5}, // B5 5
|
||||
{&DDRB, &PINB, &PORTB, 6}, // B6 6
|
||||
{&DDRB, &PINB, &PORTB, 7}, // B7 7
|
||||
{&DDRD, &PIND, &PORTD, 0}, // D0 8
|
||||
{&DDRD, &PIND, &PORTD, 1}, // D1 9
|
||||
{&DDRD, &PIND, &PORTD, 2}, // D2 10
|
||||
{&DDRD, &PIND, &PORTD, 3}, // D3 11
|
||||
{&DDRD, &PIND, &PORTD, 4}, // D4 12
|
||||
{&DDRD, &PIND, &PORTD, 5}, // D5 13
|
||||
{&DDRD, &PIND, &PORTD, 6}, // D6 14
|
||||
{&DDRD, &PIND, &PORTD, 7}, // D7 15
|
||||
{&DDRC, &PINC, &PORTC, 0}, // C0 16
|
||||
{&DDRC, &PINC, &PORTC, 1}, // C1 17
|
||||
{&DDRC, &PINC, &PORTC, 2}, // C2 18
|
||||
{&DDRC, &PINC, &PORTC, 3}, // C3 19
|
||||
{&DDRC, &PINC, &PORTC, 4}, // C4 20
|
||||
{&DDRC, &PINC, &PORTC, 5}, // C5 21
|
||||
{&DDRC, &PINC, &PORTC, 6}, // C6 22
|
||||
{&DDRC, &PINC, &PORTC, 7}, // C7 23
|
||||
{&DDRA, &PINA, &PORTA, 7}, // A7 24
|
||||
{&DDRA, &PINA, &PORTA, 6}, // A6 25
|
||||
{&DDRA, &PINA, &PORTA, 5}, // A5 26
|
||||
{&DDRA, &PINA, &PORTA, 4}, // A4 27
|
||||
{&DDRA, &PINA, &PORTA, 3}, // A3 28
|
||||
{&DDRA, &PINA, &PORTA, 2}, // A2 29
|
||||
{&DDRA, &PINA, &PORTA, 1}, // A1 30
|
||||
{&DDRA, &PINA, &PORTA, 0} // A0 31
|
||||
};
|
||||
//------------------------------------------------------------------------------
|
||||
#elif defined(__AVR_ATmega32U4__)
|
||||
// XXXXTeensy 2.0XXXX - this is not going to be the teensy pinout anymore!
|
||||
// because we need to give priority to the leonardo
|
||||
|
||||
// Two Wire (aka I2C) ports
|
||||
uint8_t const SDA_PIN = 2;
|
||||
uint8_t const SCL_PIN = 3;
|
||||
|
||||
// SPI port
|
||||
uint8_t const SS_PIN = SS;
|
||||
uint8_t const MOSI_PIN = MOSI;
|
||||
uint8_t const MISO_PIN = MISO;
|
||||
uint8_t const SCK_PIN = SCK;
|
||||
|
||||
static const pin_map_t digitalPinMap[] = {
|
||||
{&DDRD, &PIND, &PORTD, 2}, // D2 0
|
||||
{&DDRD, &PIND, &PORTD, 3}, // D3 1
|
||||
{&DDRD, &PIND, &PORTD, 1}, // D1 2
|
||||
{&DDRD, &PIND, &PORTD, 0}, // D0 3
|
||||
{&DDRD, &PIND, &PORTD, 4}, // D4 4
|
||||
{&DDRC, &PINC, &PORTC, 6}, // C6 5
|
||||
{&DDRD, &PIND, &PORTD, 7}, // D7 6
|
||||
{&DDRE, &PINE, &PORTE, 6}, // E6 7
|
||||
{&DDRB, &PINB, &PORTB, 4}, // B4 8
|
||||
{&DDRB, &PINB, &PORTB, 5}, // B5 9
|
||||
{&DDRB, &PINB, &PORTB, 6}, // B6 10
|
||||
{&DDRB, &PINB, &PORTB, 7}, // B7 11
|
||||
{&DDRD, &PIND, &PORTD, 6}, // D6 12
|
||||
{&DDRC, &PINC, &PORTC, 7}, // C7 13
|
||||
/*
|
||||
{&DDRB, &PINB, &PORTB, 5}, // B5 14
|
||||
{&DDRB, &PINB, &PORTB, 6}, // B6 15
|
||||
{&DDRF, &PINF, &PORTF, 7}, // F7 16
|
||||
{&DDRF, &PINF, &PORTF, 6}, // F6 17
|
||||
{&DDRF, &PINF, &PORTF, 5}, // F5 18
|
||||
{&DDRF, &PINF, &PORTF, 4}, // F4 19
|
||||
{&DDRF, &PINF, &PORTF, 1}, // F1 20
|
||||
{&DDRF, &PINF, &PORTF, 0}, // F0 21
|
||||
{&DDRD, &PIND, &PORTD, 4}, // D4 22
|
||||
{&DDRD, &PIND, &PORTD, 5}, // D5 23
|
||||
{&DDRE, &PINE, &PORTE, 6} // E6 24
|
||||
*/
|
||||
};
|
||||
//------------------------------------------------------------------------------
|
||||
#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
|
||||
// Teensy++ 1.0 & 2.0
|
||||
|
||||
// Two Wire (aka I2C) ports
|
||||
uint8_t const SDA_PIN = 1;
|
||||
uint8_t const SCL_PIN = 0;
|
||||
|
||||
// SPI port
|
||||
uint8_t const SS_PIN = 20;
|
||||
uint8_t const MOSI_PIN = 22;
|
||||
uint8_t const MISO_PIN = 23;
|
||||
uint8_t const SCK_PIN = 21;
|
||||
|
||||
static const pin_map_t digitalPinMap[] = {
|
||||
{&DDRD, &PIND, &PORTD, 0}, // D0 0
|
||||
{&DDRD, &PIND, &PORTD, 1}, // D1 1
|
||||
{&DDRD, &PIND, &PORTD, 2}, // D2 2
|
||||
{&DDRD, &PIND, &PORTD, 3}, // D3 3
|
||||
{&DDRD, &PIND, &PORTD, 4}, // D4 4
|
||||
{&DDRD, &PIND, &PORTD, 5}, // D5 5
|
||||
{&DDRD, &PIND, &PORTD, 6}, // D6 6
|
||||
{&DDRD, &PIND, &PORTD, 7}, // D7 7
|
||||
{&DDRE, &PINE, &PORTE, 0}, // E0 8
|
||||
{&DDRE, &PINE, &PORTE, 1}, // E1 9
|
||||
{&DDRC, &PINC, &PORTC, 0}, // C0 10
|
||||
{&DDRC, &PINC, &PORTC, 1}, // C1 11
|
||||
{&DDRC, &PINC, &PORTC, 2}, // C2 12
|
||||
{&DDRC, &PINC, &PORTC, 3}, // C3 13
|
||||
{&DDRC, &PINC, &PORTC, 4}, // C4 14
|
||||
{&DDRC, &PINC, &PORTC, 5}, // C5 15
|
||||
{&DDRC, &PINC, &PORTC, 6}, // C6 16
|
||||
{&DDRC, &PINC, &PORTC, 7}, // C7 17
|
||||
{&DDRE, &PINE, &PORTE, 6}, // E6 18
|
||||
{&DDRE, &PINE, &PORTE, 7}, // E7 19
|
||||
{&DDRB, &PINB, &PORTB, 0}, // B0 20
|
||||
{&DDRB, &PINB, &PORTB, 1}, // B1 21
|
||||
{&DDRB, &PINB, &PORTB, 2}, // B2 22
|
||||
{&DDRB, &PINB, &PORTB, 3}, // B3 23
|
||||
{&DDRB, &PINB, &PORTB, 4}, // B4 24
|
||||
{&DDRB, &PINB, &PORTB, 5}, // B5 25
|
||||
{&DDRB, &PINB, &PORTB, 6}, // B6 26
|
||||
{&DDRB, &PINB, &PORTB, 7}, // B7 27
|
||||
{&DDRA, &PINA, &PORTA, 0}, // A0 28
|
||||
{&DDRA, &PINA, &PORTA, 1}, // A1 29
|
||||
{&DDRA, &PINA, &PORTA, 2}, // A2 30
|
||||
{&DDRA, &PINA, &PORTA, 3}, // A3 31
|
||||
{&DDRA, &PINA, &PORTA, 4}, // A4 32
|
||||
{&DDRA, &PINA, &PORTA, 5}, // A5 33
|
||||
{&DDRA, &PINA, &PORTA, 6}, // A6 34
|
||||
{&DDRA, &PINA, &PORTA, 7}, // A7 35
|
||||
{&DDRE, &PINE, &PORTE, 4}, // E4 36
|
||||
{&DDRE, &PINE, &PORTE, 5}, // E5 37
|
||||
{&DDRF, &PINF, &PORTF, 0}, // F0 38
|
||||
{&DDRF, &PINF, &PORTF, 1}, // F1 39
|
||||
{&DDRF, &PINF, &PORTF, 2}, // F2 40
|
||||
{&DDRF, &PINF, &PORTF, 3}, // F3 41
|
||||
{&DDRF, &PINF, &PORTF, 4}, // F4 42
|
||||
{&DDRF, &PINF, &PORTF, 5}, // F5 43
|
||||
{&DDRF, &PINF, &PORTF, 6}, // F6 44
|
||||
{&DDRF, &PINF, &PORTF, 7} // F7 45
|
||||
};
|
||||
//------------------------------------------------------------------------------
|
||||
#else // defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
|
||||
// 168 and 328 Arduinos
|
||||
|
||||
// Two Wire (aka I2C) ports
|
||||
uint8_t const SDA_PIN = 18;
|
||||
uint8_t const SCL_PIN = 19;
|
||||
|
||||
// SPI port
|
||||
uint8_t const SS_PIN = 10;
|
||||
uint8_t const MOSI_PIN = 11;
|
||||
uint8_t const MISO_PIN = 12;
|
||||
uint8_t const SCK_PIN = 13;
|
||||
|
||||
static const pin_map_t digitalPinMap[] = {
|
||||
{&DDRD, &PIND, &PORTD, 0}, // D0 0
|
||||
{&DDRD, &PIND, &PORTD, 1}, // D1 1
|
||||
{&DDRD, &PIND, &PORTD, 2}, // D2 2
|
||||
{&DDRD, &PIND, &PORTD, 3}, // D3 3
|
||||
{&DDRD, &PIND, &PORTD, 4}, // D4 4
|
||||
{&DDRD, &PIND, &PORTD, 5}, // D5 5
|
||||
{&DDRD, &PIND, &PORTD, 6}, // D6 6
|
||||
{&DDRD, &PIND, &PORTD, 7}, // D7 7
|
||||
{&DDRB, &PINB, &PORTB, 0}, // B0 8
|
||||
{&DDRB, &PINB, &PORTB, 1}, // B1 9
|
||||
{&DDRB, &PINB, &PORTB, 2}, // B2 10
|
||||
{&DDRB, &PINB, &PORTB, 3}, // B3 11
|
||||
{&DDRB, &PINB, &PORTB, 4}, // B4 12
|
||||
{&DDRB, &PINB, &PORTB, 5}, // B5 13
|
||||
{&DDRC, &PINC, &PORTC, 0}, // C0 14
|
||||
{&DDRC, &PINC, &PORTC, 1}, // C1 15
|
||||
{&DDRC, &PINC, &PORTC, 2}, // C2 16
|
||||
{&DDRC, &PINC, &PORTC, 3}, // C3 17
|
||||
{&DDRC, &PINC, &PORTC, 4}, // C4 18
|
||||
{&DDRC, &PINC, &PORTC, 5} // C5 19
|
||||
};
|
||||
#endif // defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
|
||||
//------------------------------------------------------------------------------
|
||||
static const uint8_t digitalPinCount = sizeof(digitalPinMap)/sizeof(pin_map_t);
|
||||
|
||||
uint8_t badPinNumber(void)
|
||||
__attribute__((error("Pin number is too large or not a constant")));
|
||||
|
||||
static inline __attribute__((always_inline))
|
||||
uint8_t getPinMode(uint8_t pin) {
|
||||
if (__builtin_constant_p(pin) && pin < digitalPinCount) {
|
||||
return (*digitalPinMap[pin].ddr >> digitalPinMap[pin].bit) & 1;
|
||||
} else {
|
||||
return badPinNumber();
|
||||
}
|
||||
}
|
||||
static inline __attribute__((always_inline))
|
||||
void setPinMode(uint8_t pin, uint8_t mode) {
|
||||
if (__builtin_constant_p(pin) && pin < digitalPinCount) {
|
||||
if (mode) {
|
||||
*digitalPinMap[pin].ddr |= 1 << digitalPinMap[pin].bit;
|
||||
} else {
|
||||
*digitalPinMap[pin].ddr &= ~(1 << digitalPinMap[pin].bit);
|
||||
}
|
||||
} else {
|
||||
badPinNumber();
|
||||
}
|
||||
}
|
||||
static inline __attribute__((always_inline))
|
||||
uint8_t fastDigitalRead(uint8_t pin) {
|
||||
if (__builtin_constant_p(pin) && pin < digitalPinCount) {
|
||||
return (*digitalPinMap[pin].pin >> digitalPinMap[pin].bit) & 1;
|
||||
} else {
|
||||
return badPinNumber();
|
||||
}
|
||||
}
|
||||
static inline __attribute__((always_inline))
|
||||
void fastDigitalWrite(uint8_t pin, uint8_t value) {
|
||||
if (__builtin_constant_p(pin) && pin < digitalPinCount) {
|
||||
if (value) {
|
||||
*digitalPinMap[pin].port |= 1 << digitalPinMap[pin].bit;
|
||||
} else {
|
||||
*digitalPinMap[pin].port &= ~(1 << digitalPinMap[pin].bit);
|
||||
}
|
||||
} else {
|
||||
badPinNumber();
|
||||
}
|
||||
}
|
||||
#endif // Sd2PinMap_h
|
||||
553
Universal_Serial_Adapter/Libraries/Adafruit-SD/utility/SdFat.h
Normal file
553
Universal_Serial_Adapter/Libraries/Adafruit-SD/utility/SdFat.h
Normal file
|
|
@ -0,0 +1,553 @@
|
|||
/* Arduino SdFat Library
|
||||
* Copyright (C) 2009 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino SdFat Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino SdFat Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef SdFat_h
|
||||
#define SdFat_h
|
||||
/**
|
||||
* \file
|
||||
* SdFile and SdVolume classes
|
||||
*/
|
||||
#include <avr/pgmspace.h>
|
||||
#include "Sd2Card.h"
|
||||
#include "FatStructs.h"
|
||||
#include "Print.h"
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Allow use of deprecated functions if non-zero
|
||||
*/
|
||||
#define ALLOW_DEPRECATED_FUNCTIONS 1
|
||||
//------------------------------------------------------------------------------
|
||||
// forward declaration since SdVolume is used in SdFile
|
||||
class SdVolume;
|
||||
//==============================================================================
|
||||
// SdFile class
|
||||
|
||||
// flags for ls()
|
||||
/** ls() flag to print modify date */
|
||||
uint8_t const LS_DATE = 1;
|
||||
/** ls() flag to print file size */
|
||||
uint8_t const LS_SIZE = 2;
|
||||
/** ls() flag for recursive list of subdirectories */
|
||||
uint8_t const LS_R = 4;
|
||||
|
||||
// use the gnu style oflag in open()
|
||||
/** open() oflag for reading */
|
||||
uint8_t const O_READ = 0X01;
|
||||
/** open() oflag - same as O_READ */
|
||||
uint8_t const O_RDONLY = O_READ;
|
||||
/** open() oflag for write */
|
||||
uint8_t const O_WRITE = 0X02;
|
||||
/** open() oflag - same as O_WRITE */
|
||||
uint8_t const O_WRONLY = O_WRITE;
|
||||
/** open() oflag for reading and writing */
|
||||
uint8_t const O_RDWR = (O_READ | O_WRITE);
|
||||
/** open() oflag mask for access modes */
|
||||
uint8_t const O_ACCMODE = (O_READ | O_WRITE);
|
||||
/** The file offset shall be set to the end of the file prior to each write. */
|
||||
uint8_t const O_APPEND = 0X04;
|
||||
/** synchronous writes - call sync() after each write */
|
||||
uint8_t const O_SYNC = 0X08;
|
||||
/** create the file if nonexistent */
|
||||
uint8_t const O_CREAT = 0X10;
|
||||
/** If O_CREAT and O_EXCL are set, open() shall fail if the file exists */
|
||||
uint8_t const O_EXCL = 0X20;
|
||||
/** truncate the file to zero length */
|
||||
uint8_t const O_TRUNC = 0X40;
|
||||
|
||||
// flags for timestamp
|
||||
/** set the file's last access date */
|
||||
uint8_t const T_ACCESS = 1;
|
||||
/** set the file's creation date and time */
|
||||
uint8_t const T_CREATE = 2;
|
||||
/** Set the file's write date and time */
|
||||
uint8_t const T_WRITE = 4;
|
||||
// values for type_
|
||||
/** This SdFile has not been opened. */
|
||||
uint8_t const FAT_FILE_TYPE_CLOSED = 0;
|
||||
/** SdFile for a file */
|
||||
uint8_t const FAT_FILE_TYPE_NORMAL = 1;
|
||||
/** SdFile for a FAT16 root directory */
|
||||
uint8_t const FAT_FILE_TYPE_ROOT16 = 2;
|
||||
/** SdFile for a FAT32 root directory */
|
||||
uint8_t const FAT_FILE_TYPE_ROOT32 = 3;
|
||||
/** SdFile for a subdirectory */
|
||||
uint8_t const FAT_FILE_TYPE_SUBDIR = 4;
|
||||
/** Test value for directory type */
|
||||
uint8_t const FAT_FILE_TYPE_MIN_DIR = FAT_FILE_TYPE_ROOT16;
|
||||
|
||||
/** date field for FAT directory entry */
|
||||
static inline uint16_t FAT_DATE(uint16_t year, uint8_t month, uint8_t day) {
|
||||
return (year - 1980) << 9 | month << 5 | day;
|
||||
}
|
||||
/** year part of FAT directory date field */
|
||||
static inline uint16_t FAT_YEAR(uint16_t fatDate) {
|
||||
return 1980 + (fatDate >> 9);
|
||||
}
|
||||
/** month part of FAT directory date field */
|
||||
static inline uint8_t FAT_MONTH(uint16_t fatDate) {
|
||||
return (fatDate >> 5) & 0XF;
|
||||
}
|
||||
/** day part of FAT directory date field */
|
||||
static inline uint8_t FAT_DAY(uint16_t fatDate) {
|
||||
return fatDate & 0X1F;
|
||||
}
|
||||
/** time field for FAT directory entry */
|
||||
static inline uint16_t FAT_TIME(uint8_t hour, uint8_t minute, uint8_t second) {
|
||||
return hour << 11 | minute << 5 | second >> 1;
|
||||
}
|
||||
/** hour part of FAT directory time field */
|
||||
static inline uint8_t FAT_HOUR(uint16_t fatTime) {
|
||||
return fatTime >> 11;
|
||||
}
|
||||
/** minute part of FAT directory time field */
|
||||
static inline uint8_t FAT_MINUTE(uint16_t fatTime) {
|
||||
return(fatTime >> 5) & 0X3F;
|
||||
}
|
||||
/** second part of FAT directory time field */
|
||||
static inline uint8_t FAT_SECOND(uint16_t fatTime) {
|
||||
return 2*(fatTime & 0X1F);
|
||||
}
|
||||
/** Default date for file timestamps is 1 Jan 2000 */
|
||||
uint16_t const FAT_DEFAULT_DATE = ((2000 - 1980) << 9) | (1 << 5) | 1;
|
||||
/** Default time for file timestamp is 1 am */
|
||||
uint16_t const FAT_DEFAULT_TIME = (1 << 11);
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* \class SdFile
|
||||
* \brief Access FAT16 and FAT32 files on SD and SDHC cards.
|
||||
*/
|
||||
class SdFile : public Print {
|
||||
public:
|
||||
/** Create an instance of SdFile. */
|
||||
SdFile(void) : type_(FAT_FILE_TYPE_CLOSED) {}
|
||||
/**
|
||||
* writeError is set to true if an error occurs during a write().
|
||||
* Set writeError to false before calling print() and/or write() and check
|
||||
* for true after calls to print() and/or write().
|
||||
*/
|
||||
bool writeError;
|
||||
/**
|
||||
* Cancel unbuffered reads for this file.
|
||||
* See setUnbufferedRead()
|
||||
*/
|
||||
void clearUnbufferedRead(void) {
|
||||
flags_ &= ~F_FILE_UNBUFFERED_READ;
|
||||
}
|
||||
uint8_t close(void);
|
||||
uint8_t contiguousRange(uint32_t* bgnBlock, uint32_t* endBlock);
|
||||
uint8_t createContiguous(SdFile* dirFile,
|
||||
const char* fileName, uint32_t size);
|
||||
/** \return The current cluster number for a file or directory. */
|
||||
uint32_t curCluster(void) const {return curCluster_;}
|
||||
/** \return The current position for a file or directory. */
|
||||
uint32_t curPosition(void) const {return curPosition_;}
|
||||
/**
|
||||
* Set the date/time callback function
|
||||
*
|
||||
* \param[in] dateTime The user's call back function. The callback
|
||||
* function is of the form:
|
||||
*
|
||||
* \code
|
||||
* void dateTime(uint16_t* date, uint16_t* time) {
|
||||
* uint16_t year;
|
||||
* uint8_t month, day, hour, minute, second;
|
||||
*
|
||||
* // User gets date and time from GPS or real-time clock here
|
||||
*
|
||||
* // return date using FAT_DATE macro to format fields
|
||||
* *date = FAT_DATE(year, month, day);
|
||||
*
|
||||
* // return time using FAT_TIME macro to format fields
|
||||
* *time = FAT_TIME(hour, minute, second);
|
||||
* }
|
||||
* \endcode
|
||||
*
|
||||
* Sets the function that is called when a file is created or when
|
||||
* a file's directory entry is modified by sync(). All timestamps,
|
||||
* access, creation, and modify, are set when a file is created.
|
||||
* sync() maintains the last access date and last modify date/time.
|
||||
*
|
||||
* See the timestamp() function.
|
||||
*/
|
||||
static void dateTimeCallback(
|
||||
void (*dateTime)(uint16_t* date, uint16_t* time)) {
|
||||
dateTime_ = dateTime;
|
||||
}
|
||||
/**
|
||||
* Cancel the date/time callback function.
|
||||
*/
|
||||
static void dateTimeCallbackCancel(void) {
|
||||
// use explicit zero since NULL is not defined for Sanguino
|
||||
dateTime_ = 0;
|
||||
}
|
||||
/** \return Address of the block that contains this file's directory. */
|
||||
uint32_t dirBlock(void) const {return dirBlock_;}
|
||||
uint8_t dirEntry(dir_t* dir);
|
||||
/** \return Index of this file's directory in the block dirBlock. */
|
||||
uint8_t dirIndex(void) const {return dirIndex_;}
|
||||
static void dirName(const dir_t& dir, char* name);
|
||||
/** \return The total number of bytes in a file or directory. */
|
||||
uint32_t fileSize(void) const {return fileSize_;}
|
||||
/** \return The first cluster number for a file or directory. */
|
||||
uint32_t firstCluster(void) const {return firstCluster_;}
|
||||
/** \return True if this is a SdFile for a directory else false. */
|
||||
uint8_t isDir(void) const {return type_ >= FAT_FILE_TYPE_MIN_DIR;}
|
||||
/** \return True if this is a SdFile for a file else false. */
|
||||
uint8_t isFile(void) const {return type_ == FAT_FILE_TYPE_NORMAL;}
|
||||
/** \return True if this is a SdFile for an open file/directory else false. */
|
||||
uint8_t isOpen(void) const {return type_ != FAT_FILE_TYPE_CLOSED;}
|
||||
/** \return True if this is a SdFile for a subdirectory else false. */
|
||||
uint8_t isSubDir(void) const {return type_ == FAT_FILE_TYPE_SUBDIR;}
|
||||
/** \return True if this is a SdFile for the root directory. */
|
||||
uint8_t isRoot(void) const {
|
||||
return type_ == FAT_FILE_TYPE_ROOT16 || type_ == FAT_FILE_TYPE_ROOT32;
|
||||
}
|
||||
void ls(uint8_t flags = 0, uint8_t indent = 0);
|
||||
uint8_t makeDir(SdFile* dir, const char* dirName);
|
||||
uint8_t open(SdFile* dirFile, uint16_t index, uint8_t oflag);
|
||||
uint8_t open(SdFile* dirFile, const char* fileName, uint8_t oflag);
|
||||
|
||||
uint8_t openRoot(SdVolume* vol);
|
||||
static void printDirName(const dir_t& dir, uint8_t width);
|
||||
static void printFatDate(uint16_t fatDate);
|
||||
static void printFatTime(uint16_t fatTime);
|
||||
static void printTwoDigits(uint8_t v);
|
||||
/**
|
||||
* Read the next byte from a file.
|
||||
*
|
||||
* \return For success read returns the next byte in the file as an int.
|
||||
* If an error occurs or end of file is reached -1 is returned.
|
||||
*/
|
||||
int16_t read(void) {
|
||||
uint8_t b;
|
||||
return read(&b, 1) == 1 ? b : -1;
|
||||
}
|
||||
int16_t read(void* buf, uint16_t nbyte);
|
||||
int8_t readDir(dir_t* dir);
|
||||
static uint8_t remove(SdFile* dirFile, const char* fileName);
|
||||
uint8_t remove(void);
|
||||
/** Set the file's current position to zero. */
|
||||
void rewind(void) {
|
||||
curPosition_ = curCluster_ = 0;
|
||||
}
|
||||
uint8_t rmDir(void);
|
||||
uint8_t rmRfStar(void);
|
||||
/** Set the files position to current position + \a pos. See seekSet(). */
|
||||
uint8_t seekCur(uint32_t pos) {
|
||||
return seekSet(curPosition_ + pos);
|
||||
}
|
||||
/**
|
||||
* Set the files current position to end of file. Useful to position
|
||||
* a file for append. See seekSet().
|
||||
*/
|
||||
uint8_t seekEnd(void) {return seekSet(fileSize_);}
|
||||
uint8_t seekSet(uint32_t pos);
|
||||
/**
|
||||
* Use unbuffered reads to access this file. Used with Wave
|
||||
* Shield ISR. Used with Sd2Card::partialBlockRead() in WaveRP.
|
||||
*
|
||||
* Not recommended for normal applications.
|
||||
*/
|
||||
void setUnbufferedRead(void) {
|
||||
if (isFile()) flags_ |= F_FILE_UNBUFFERED_READ;
|
||||
}
|
||||
uint8_t timestamp(uint8_t flag, uint16_t year, uint8_t month, uint8_t day,
|
||||
uint8_t hour, uint8_t minute, uint8_t second);
|
||||
uint8_t sync(void);
|
||||
/** Type of this SdFile. You should use isFile() or isDir() instead of type()
|
||||
* if possible.
|
||||
*
|
||||
* \return The file or directory type.
|
||||
*/
|
||||
uint8_t type(void) const {return type_;}
|
||||
uint8_t truncate(uint32_t size);
|
||||
/** \return Unbuffered read flag. */
|
||||
uint8_t unbufferedRead(void) const {
|
||||
return flags_ & F_FILE_UNBUFFERED_READ;
|
||||
}
|
||||
/** \return SdVolume that contains this file. */
|
||||
SdVolume* volume(void) const {return vol_;}
|
||||
#if ARDUINO >= 100
|
||||
size_t write(uint8_t b);
|
||||
size_t write(const void* buf, uint16_t nbyte);
|
||||
size_t write(const char* str);
|
||||
#else
|
||||
void write(uint8_t b);
|
||||
int16_t write(const void* buf, uint16_t nbyte);
|
||||
void write(const char* str);
|
||||
#endif
|
||||
void write_P(PGM_P str);
|
||||
void writeln_P(PGM_P str);
|
||||
//------------------------------------------------------------------------------
|
||||
#if ALLOW_DEPRECATED_FUNCTIONS
|
||||
// Deprecated functions - suppress cpplint warnings with NOLINT comment
|
||||
/** \deprecated Use:
|
||||
* uint8_t SdFile::contiguousRange(uint32_t* bgnBlock, uint32_t* endBlock);
|
||||
*/
|
||||
uint8_t contiguousRange(uint32_t& bgnBlock, uint32_t& endBlock) { // NOLINT
|
||||
return contiguousRange(&bgnBlock, &endBlock);
|
||||
}
|
||||
/** \deprecated Use:
|
||||
* uint8_t SdFile::createContiguous(SdFile* dirFile,
|
||||
* const char* fileName, uint32_t size)
|
||||
*/
|
||||
uint8_t createContiguous(SdFile& dirFile, // NOLINT
|
||||
const char* fileName, uint32_t size) {
|
||||
return createContiguous(&dirFile, fileName, size);
|
||||
}
|
||||
|
||||
/**
|
||||
* \deprecated Use:
|
||||
* static void SdFile::dateTimeCallback(
|
||||
* void (*dateTime)(uint16_t* date, uint16_t* time));
|
||||
*/
|
||||
static void dateTimeCallback(
|
||||
void (*dateTime)(uint16_t& date, uint16_t& time)) { // NOLINT
|
||||
oldDateTime_ = dateTime;
|
||||
dateTime_ = dateTime ? oldToNew : 0;
|
||||
}
|
||||
/** \deprecated Use: uint8_t SdFile::dirEntry(dir_t* dir); */
|
||||
uint8_t dirEntry(dir_t& dir) {return dirEntry(&dir);} // NOLINT
|
||||
/** \deprecated Use:
|
||||
* uint8_t SdFile::makeDir(SdFile* dir, const char* dirName);
|
||||
*/
|
||||
uint8_t makeDir(SdFile& dir, const char* dirName) { // NOLINT
|
||||
return makeDir(&dir, dirName);
|
||||
}
|
||||
/** \deprecated Use:
|
||||
* uint8_t SdFile::open(SdFile* dirFile, const char* fileName, uint8_t oflag);
|
||||
*/
|
||||
uint8_t open(SdFile& dirFile, // NOLINT
|
||||
const char* fileName, uint8_t oflag) {
|
||||
return open(&dirFile, fileName, oflag);
|
||||
}
|
||||
/** \deprecated Do not use in new apps */
|
||||
uint8_t open(SdFile& dirFile, const char* fileName) { // NOLINT
|
||||
return open(dirFile, fileName, O_RDWR);
|
||||
}
|
||||
/** \deprecated Use:
|
||||
* uint8_t SdFile::open(SdFile* dirFile, uint16_t index, uint8_t oflag);
|
||||
*/
|
||||
uint8_t open(SdFile& dirFile, uint16_t index, uint8_t oflag) { // NOLINT
|
||||
return open(&dirFile, index, oflag);
|
||||
}
|
||||
/** \deprecated Use: uint8_t SdFile::openRoot(SdVolume* vol); */
|
||||
uint8_t openRoot(SdVolume& vol) {return openRoot(&vol);} // NOLINT
|
||||
|
||||
/** \deprecated Use: int8_t SdFile::readDir(dir_t* dir); */
|
||||
int8_t readDir(dir_t& dir) {return readDir(&dir);} // NOLINT
|
||||
/** \deprecated Use:
|
||||
* static uint8_t SdFile::remove(SdFile* dirFile, const char* fileName);
|
||||
*/
|
||||
static uint8_t remove(SdFile& dirFile, const char* fileName) { // NOLINT
|
||||
return remove(&dirFile, fileName);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// rest are private
|
||||
private:
|
||||
static void (*oldDateTime_)(uint16_t& date, uint16_t& time); // NOLINT
|
||||
static void oldToNew(uint16_t* date, uint16_t* time) {
|
||||
uint16_t d;
|
||||
uint16_t t;
|
||||
oldDateTime_(d, t);
|
||||
*date = d;
|
||||
*time = t;
|
||||
}
|
||||
#endif // ALLOW_DEPRECATED_FUNCTIONS
|
||||
private:
|
||||
// bits defined in flags_
|
||||
// should be 0XF
|
||||
static uint8_t const F_OFLAG = (O_ACCMODE | O_APPEND | O_SYNC);
|
||||
// available bits
|
||||
static uint8_t const F_UNUSED = 0X30;
|
||||
// use unbuffered SD read
|
||||
static uint8_t const F_FILE_UNBUFFERED_READ = 0X40;
|
||||
// sync of directory entry required
|
||||
static uint8_t const F_FILE_DIR_DIRTY = 0X80;
|
||||
|
||||
// make sure F_OFLAG is ok
|
||||
#if ((F_UNUSED | F_FILE_UNBUFFERED_READ | F_FILE_DIR_DIRTY) & F_OFLAG)
|
||||
#error flags_ bits conflict
|
||||
#endif // flags_ bits
|
||||
|
||||
// private data
|
||||
uint8_t flags_; // See above for definition of flags_ bits
|
||||
uint8_t type_; // type of file see above for values
|
||||
uint32_t curCluster_; // cluster for current file position
|
||||
uint32_t curPosition_; // current file position in bytes from beginning
|
||||
uint32_t dirBlock_; // SD block that contains directory entry for file
|
||||
uint8_t dirIndex_; // index of entry in dirBlock 0 <= dirIndex_ <= 0XF
|
||||
uint32_t fileSize_; // file size in bytes
|
||||
uint32_t firstCluster_; // first cluster of file
|
||||
SdVolume* vol_; // volume where file is located
|
||||
|
||||
// private functions
|
||||
uint8_t addCluster(void);
|
||||
uint8_t addDirCluster(void);
|
||||
dir_t* cacheDirEntry(uint8_t action);
|
||||
static void (*dateTime_)(uint16_t* date, uint16_t* time);
|
||||
static uint8_t make83Name(const char* str, uint8_t* name);
|
||||
uint8_t openCachedEntry(uint8_t cacheIndex, uint8_t oflags);
|
||||
dir_t* readDirCache(void);
|
||||
};
|
||||
//==============================================================================
|
||||
// SdVolume class
|
||||
/**
|
||||
* \brief Cache for an SD data block
|
||||
*/
|
||||
union cache_t {
|
||||
/** Used to access cached file data blocks. */
|
||||
uint8_t data[512];
|
||||
/** Used to access cached FAT16 entries. */
|
||||
uint16_t fat16[256];
|
||||
/** Used to access cached FAT32 entries. */
|
||||
uint32_t fat32[128];
|
||||
/** Used to access cached directory entries. */
|
||||
dir_t dir[16];
|
||||
/** Used to access a cached MasterBoot Record. */
|
||||
mbr_t mbr;
|
||||
/** Used to access to a cached FAT boot sector. */
|
||||
fbs_t fbs;
|
||||
};
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* \class SdVolume
|
||||
* \brief Access FAT16 and FAT32 volumes on SD and SDHC cards.
|
||||
*/
|
||||
class SdVolume {
|
||||
public:
|
||||
/** Create an instance of SdVolume */
|
||||
SdVolume(void) :allocSearchStart_(2), fatType_(0) {}
|
||||
/** Clear the cache and returns a pointer to the cache. Used by the WaveRP
|
||||
* recorder to do raw write to the SD card. Not for normal apps.
|
||||
*/
|
||||
static uint8_t* cacheClear(void) {
|
||||
cacheFlush();
|
||||
cacheBlockNumber_ = 0XFFFFFFFF;
|
||||
return cacheBuffer_.data;
|
||||
}
|
||||
/**
|
||||
* Initialize a FAT volume. Try partition one first then try super
|
||||
* floppy format.
|
||||
*
|
||||
* \param[in] dev The Sd2Card where the volume is located.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure. Reasons for
|
||||
* failure include not finding a valid partition, not finding a valid
|
||||
* FAT file system or an I/O error.
|
||||
*/
|
||||
uint8_t init(Sd2Card* dev) { return init(dev, 1) ? true : init(dev, 0);}
|
||||
uint8_t init(Sd2Card* dev, uint8_t part);
|
||||
|
||||
// inline functions that return volume info
|
||||
/** \return The volume's cluster size in blocks. */
|
||||
uint8_t blocksPerCluster(void) const {return blocksPerCluster_;}
|
||||
/** \return The number of blocks in one FAT. */
|
||||
uint32_t blocksPerFat(void) const {return blocksPerFat_;}
|
||||
/** \return The total number of clusters in the volume. */
|
||||
uint32_t clusterCount(void) const {return clusterCount_;}
|
||||
/** \return The shift count required to multiply by blocksPerCluster. */
|
||||
uint8_t clusterSizeShift(void) const {return clusterSizeShift_;}
|
||||
/** \return The logical block number for the start of file data. */
|
||||
uint32_t dataStartBlock(void) const {return dataStartBlock_;}
|
||||
/** \return The number of FAT structures on the volume. */
|
||||
uint8_t fatCount(void) const {return fatCount_;}
|
||||
/** \return The logical block number for the start of the first FAT. */
|
||||
uint32_t fatStartBlock(void) const {return fatStartBlock_;}
|
||||
/** \return The FAT type of the volume. Values are 12, 16 or 32. */
|
||||
uint8_t fatType(void) const {return fatType_;}
|
||||
/** \return The number of entries in the root directory for FAT16 volumes. */
|
||||
uint32_t rootDirEntryCount(void) const {return rootDirEntryCount_;}
|
||||
/** \return The logical block number for the start of the root directory
|
||||
on FAT16 volumes or the first cluster number on FAT32 volumes. */
|
||||
uint32_t rootDirStart(void) const {return rootDirStart_;}
|
||||
/** return a pointer to the Sd2Card object for this volume */
|
||||
static Sd2Card* sdCard(void) {return sdCard_;}
|
||||
//------------------------------------------------------------------------------
|
||||
#if ALLOW_DEPRECATED_FUNCTIONS
|
||||
// Deprecated functions - suppress cpplint warnings with NOLINT comment
|
||||
/** \deprecated Use: uint8_t SdVolume::init(Sd2Card* dev); */
|
||||
uint8_t init(Sd2Card& dev) {return init(&dev);} // NOLINT
|
||||
|
||||
/** \deprecated Use: uint8_t SdVolume::init(Sd2Card* dev, uint8_t vol); */
|
||||
uint8_t init(Sd2Card& dev, uint8_t part) { // NOLINT
|
||||
return init(&dev, part);
|
||||
}
|
||||
#endif // ALLOW_DEPRECATED_FUNCTIONS
|
||||
//------------------------------------------------------------------------------
|
||||
private:
|
||||
// Allow SdFile access to SdVolume private data.
|
||||
friend class SdFile;
|
||||
|
||||
// value for action argument in cacheRawBlock to indicate read from cache
|
||||
static uint8_t const CACHE_FOR_READ = 0;
|
||||
// value for action argument in cacheRawBlock to indicate cache dirty
|
||||
static uint8_t const CACHE_FOR_WRITE = 1;
|
||||
|
||||
static cache_t cacheBuffer_; // 512 byte cache for device blocks
|
||||
static uint32_t cacheBlockNumber_; // Logical number of block in the cache
|
||||
static Sd2Card* sdCard_; // Sd2Card object for cache
|
||||
static uint8_t cacheDirty_; // cacheFlush() will write block if true
|
||||
static uint32_t cacheMirrorBlock_; // block number for mirror FAT
|
||||
//
|
||||
uint32_t allocSearchStart_; // start cluster for alloc search
|
||||
uint8_t blocksPerCluster_; // cluster size in blocks
|
||||
uint32_t blocksPerFat_; // FAT size in blocks
|
||||
uint32_t clusterCount_; // clusters in one FAT
|
||||
uint8_t clusterSizeShift_; // shift to convert cluster count to block count
|
||||
uint32_t dataStartBlock_; // first data block number
|
||||
uint8_t fatCount_; // number of FATs on volume
|
||||
uint32_t fatStartBlock_; // start block for first FAT
|
||||
uint8_t fatType_; // volume type (12, 16, OR 32)
|
||||
uint16_t rootDirEntryCount_; // number of entries in FAT16 root dir
|
||||
uint32_t rootDirStart_; // root start block for FAT16, cluster for FAT32
|
||||
//----------------------------------------------------------------------------
|
||||
uint8_t allocContiguous(uint32_t count, uint32_t* curCluster);
|
||||
uint8_t blockOfCluster(uint32_t position) const {
|
||||
return (position >> 9) & (blocksPerCluster_ - 1);}
|
||||
uint32_t clusterStartBlock(uint32_t cluster) const {
|
||||
return dataStartBlock_ + ((cluster - 2) << clusterSizeShift_);}
|
||||
uint32_t blockNumber(uint32_t cluster, uint32_t position) const {
|
||||
return clusterStartBlock(cluster) + blockOfCluster(position);}
|
||||
static uint8_t cacheFlush(void);
|
||||
static uint8_t cacheRawBlock(uint32_t blockNumber, uint8_t action);
|
||||
static void cacheSetDirty(void) {cacheDirty_ |= CACHE_FOR_WRITE;}
|
||||
static uint8_t cacheZeroBlock(uint32_t blockNumber);
|
||||
uint8_t chainSize(uint32_t beginCluster, uint32_t* size) const;
|
||||
uint8_t fatGet(uint32_t cluster, uint32_t* value) const;
|
||||
uint8_t fatPut(uint32_t cluster, uint32_t value);
|
||||
uint8_t fatPutEOC(uint32_t cluster) {
|
||||
return fatPut(cluster, 0x0FFFFFFF);
|
||||
}
|
||||
uint8_t freeChain(uint32_t cluster);
|
||||
uint8_t isEOC(uint32_t cluster) const {
|
||||
return cluster >= (fatType_ == 16 ? FAT16EOC_MIN : FAT32EOC_MIN);
|
||||
}
|
||||
uint8_t readBlock(uint32_t block, uint8_t* dst) {
|
||||
return sdCard_->readBlock(block, dst);}
|
||||
uint8_t readData(uint32_t block, uint16_t offset,
|
||||
uint16_t count, uint8_t* dst) {
|
||||
return sdCard_->readData(block, offset, count, dst);
|
||||
}
|
||||
uint8_t writeBlock(uint32_t block, const uint8_t* dst) {
|
||||
return sdCard_->writeBlock(block, dst);
|
||||
}
|
||||
};
|
||||
#endif // SdFat_h
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
/* Arduino SdFat Library
|
||||
* Copyright (C) 2008 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino SdFat Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino SdFat Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef SdFatUtil_h
|
||||
#define SdFatUtil_h
|
||||
/**
|
||||
* \file
|
||||
* Useful utility functions.
|
||||
*/
|
||||
#if ARDUINO >= 100
|
||||
#include "Arduino.h"
|
||||
#else
|
||||
#include "WProgram.h"
|
||||
#include <avr/pgmspace.h>
|
||||
#endif
|
||||
/** Store and print a string in flash memory.*/
|
||||
#define PgmPrint(x) SerialPrint_P(PSTR(x))
|
||||
/** Store and print a string in flash memory followed by a CR/LF.*/
|
||||
#define PgmPrintln(x) SerialPrintln_P(PSTR(x))
|
||||
/** Defined so doxygen works for function definitions. */
|
||||
#define NOINLINE __attribute__((noinline))
|
||||
//------------------------------------------------------------------------------
|
||||
/** Return the number of bytes currently free in RAM. */
|
||||
static int FreeRam(void) {
|
||||
extern int __bss_end;
|
||||
extern int* __brkval;
|
||||
int free_memory;
|
||||
if (reinterpret_cast<int>(__brkval) == 0) {
|
||||
// if no heap use from end of bss section
|
||||
free_memory = reinterpret_cast<int>(&free_memory)
|
||||
- reinterpret_cast<int>(&__bss_end);
|
||||
} else {
|
||||
// use from top of stack to heap
|
||||
free_memory = reinterpret_cast<int>(&free_memory)
|
||||
- reinterpret_cast<int>(__brkval);
|
||||
}
|
||||
return free_memory;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* %Print a string in flash memory to the serial port.
|
||||
*
|
||||
* \param[in] str Pointer to string stored in flash memory.
|
||||
*/
|
||||
static NOINLINE void SerialPrint_P(PGM_P str) {
|
||||
for (uint8_t c; (c = pgm_read_byte(str)); str++) Serial.print(c);
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* %Print a string in flash memory followed by a CR/LF.
|
||||
*
|
||||
* \param[in] str Pointer to string stored in flash memory.
|
||||
*/
|
||||
static NOINLINE void SerialPrintln_P(PGM_P str) {
|
||||
SerialPrint_P(str);
|
||||
Serial.println();
|
||||
}
|
||||
#endif // #define SdFatUtil_h
|
||||
|
|
@ -0,0 +1,202 @@
|
|||
/* Arduino SdFat Library
|
||||
* Copyright (C) 2009 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino SdFat Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino SdFat Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
\mainpage Arduino SdFat Library
|
||||
<CENTER>Copyright © 2009 by William Greiman
|
||||
</CENTER>
|
||||
|
||||
\section Intro Introduction
|
||||
The Arduino SdFat Library is a minimal implementation of FAT16 and FAT32
|
||||
file systems on SD flash memory cards. Standard SD and high capacity
|
||||
SDHC cards are supported.
|
||||
|
||||
The SdFat only supports short 8.3 names.
|
||||
|
||||
The main classes in SdFat are Sd2Card, SdVolume, and SdFile.
|
||||
|
||||
The Sd2Card class supports access to standard SD cards and SDHC cards. Most
|
||||
applications will only need to call the Sd2Card::init() member function.
|
||||
|
||||
The SdVolume class supports FAT16 and FAT32 partitions. Most applications
|
||||
will only need to call the SdVolume::init() member function.
|
||||
|
||||
The SdFile class provides file access functions such as open(), read(),
|
||||
remove(), write(), close() and sync(). This class supports access to the root
|
||||
directory and subdirectories.
|
||||
|
||||
A number of example are provided in the SdFat/examples folder. These were
|
||||
developed to test SdFat and illustrate its use.
|
||||
|
||||
SdFat was developed for high speed data recording. SdFat was used to implement
|
||||
an audio record/play class, WaveRP, for the Adafruit Wave Shield. This
|
||||
application uses special Sd2Card calls to write to contiguous files in raw mode.
|
||||
These functions reduce write latency so that audio can be recorded with the
|
||||
small amount of RAM in the Arduino.
|
||||
|
||||
\section SDcard SD\SDHC Cards
|
||||
|
||||
Arduinos access SD cards using the cards SPI protocol. PCs, Macs, and
|
||||
most consumer devices use the 4-bit parallel SD protocol. A card that
|
||||
functions well on A PC or Mac may not work well on the Arduino.
|
||||
|
||||
Most cards have good SPI read performance but cards vary widely in SPI
|
||||
write performance. Write performance is limited by how efficiently the
|
||||
card manages internal erase/remapping operations. The Arduino cannot
|
||||
optimize writes to reduce erase operations because of its limit RAM.
|
||||
|
||||
SanDisk cards generally have good write performance. They seem to have
|
||||
more internal RAM buffering than other cards and therefore can limit
|
||||
the number of flash erase operations that the Arduino forces due to its
|
||||
limited RAM.
|
||||
|
||||
\section Hardware Hardware Configuration
|
||||
|
||||
SdFat was developed using an
|
||||
<A HREF = "http://www.adafruit.com/"> Adafruit Industries</A>
|
||||
<A HREF = "http://www.ladyada.net/make/waveshield/"> Wave Shield</A>.
|
||||
|
||||
The hardware interface to the SD card should not use a resistor based level
|
||||
shifter. SdFat sets the SPI bus frequency to 8 MHz which results in signal
|
||||
rise times that are too slow for the edge detectors in many newer SD card
|
||||
controllers when resistor voltage dividers are used.
|
||||
|
||||
The 5 to 3.3 V level shifter for 5 V Arduinos should be IC based like the
|
||||
74HC4050N based circuit shown in the file SdLevel.png. The Adafruit Wave Shield
|
||||
uses a 74AHC125N. Gravitech sells SD and MicroSD Card Adapters based on the
|
||||
74LCX245.
|
||||
|
||||
If you are using a resistor based level shifter and are having problems try
|
||||
setting the SPI bus frequency to 4 MHz. This can be done by using
|
||||
card.init(SPI_HALF_SPEED) to initialize the SD card.
|
||||
|
||||
\section comment Bugs and Comments
|
||||
|
||||
If you wish to report bugs or have comments, send email to fat16lib@sbcglobal.net.
|
||||
|
||||
\section SdFatClass SdFat Usage
|
||||
|
||||
SdFat uses a slightly restricted form of short names.
|
||||
Only printable ASCII characters are supported. No characters with code point
|
||||
values greater than 127 are allowed. Space is not allowed even though space
|
||||
was allowed in the API of early versions of DOS.
|
||||
|
||||
Short names are limited to 8 characters followed by an optional period (.)
|
||||
and extension of up to 3 characters. The characters may be any combination
|
||||
of letters and digits. The following special characters are also allowed:
|
||||
|
||||
$ % ' - _ @ ~ ` ! ( ) { } ^ # &
|
||||
|
||||
Short names are always converted to upper case and their original case
|
||||
value is lost.
|
||||
|
||||
\note
|
||||
The Arduino Print class uses character
|
||||
at a time writes so it was necessary to use a \link SdFile::sync() sync() \endlink
|
||||
function to control when data is written to the SD card.
|
||||
|
||||
\par
|
||||
An application which writes to a file using \link Print::print() print()\endlink,
|
||||
\link Print::println() println() \endlink
|
||||
or \link SdFile::write write() \endlink must call \link SdFile::sync() sync() \endlink
|
||||
at the appropriate time to force data and directory information to be written
|
||||
to the SD Card. Data and directory information are also written to the SD card
|
||||
when \link SdFile::close() close() \endlink is called.
|
||||
|
||||
\par
|
||||
Applications must use care calling \link SdFile::sync() sync() \endlink
|
||||
since 2048 bytes of I/O is required to update file and
|
||||
directory information. This includes writing the current data block, reading
|
||||
the block that contains the directory entry for update, writing the directory
|
||||
block back and reading back the current data block.
|
||||
|
||||
It is possible to open a file with two or more instances of SdFile. A file may
|
||||
be corrupted if data is written to the file by more than one instance of SdFile.
|
||||
|
||||
\section HowTo How to format SD Cards as FAT Volumes
|
||||
|
||||
You should use a freshly formatted SD card for best performance. FAT
|
||||
file systems become slower if many files have been created and deleted.
|
||||
This is because the directory entry for a deleted file is marked as deleted,
|
||||
but is not deleted. When a new file is created, these entries must be scanned
|
||||
before creating the file, a flaw in the FAT design. Also files can become
|
||||
fragmented which causes reads and writes to be slower.
|
||||
|
||||
Microsoft operating systems support removable media formatted with a
|
||||
Master Boot Record, MBR, or formatted as a super floppy with a FAT Boot Sector
|
||||
in block zero.
|
||||
|
||||
Microsoft operating systems expect MBR formatted removable media
|
||||
to have only one partition. The first partition should be used.
|
||||
|
||||
Microsoft operating systems do not support partitioning SD flash cards.
|
||||
If you erase an SD card with a program like KillDisk, Most versions of
|
||||
Windows will format the card as a super floppy.
|
||||
|
||||
The best way to restore an SD card's format is to use SDFormatter
|
||||
which can be downloaded from:
|
||||
|
||||
http://www.sdcard.org/consumers/formatter/
|
||||
|
||||
SDFormatter aligns flash erase boundaries with file
|
||||
system structures which reduces write latency and file system overhead.
|
||||
|
||||
SDFormatter does not have an option for FAT type so it may format
|
||||
small cards as FAT12.
|
||||
|
||||
After the MBR is restored by SDFormatter you may need to reformat small
|
||||
cards that have been formatted FAT12 to force the volume type to be FAT16.
|
||||
|
||||
If you reformat the SD card with an OS utility, choose a cluster size that
|
||||
will result in:
|
||||
|
||||
4084 < CountOfClusters && CountOfClusters < 65525
|
||||
|
||||
The volume will then be FAT16.
|
||||
|
||||
If you are formatting an SD card on OS X or Linux, be sure to use the first
|
||||
partition. Format this partition with a cluster count in above range.
|
||||
|
||||
\section References References
|
||||
|
||||
Adafruit Industries:
|
||||
|
||||
http://www.adafruit.com/
|
||||
|
||||
http://www.ladyada.net/make/waveshield/
|
||||
|
||||
The Arduino site:
|
||||
|
||||
http://www.arduino.cc/
|
||||
|
||||
For more information about FAT file systems see:
|
||||
|
||||
http://www.microsoft.com/whdc/system/platform/firmware/fatgen.mspx
|
||||
|
||||
For information about using SD cards as SPI devices see:
|
||||
|
||||
http://www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
|
||||
|
||||
The ATmega328 datasheet:
|
||||
|
||||
http://www.atmel.com/dyn/resources/prod_documents/doc8161.pdf
|
||||
|
||||
|
||||
*/
|
||||
1276
Universal_Serial_Adapter/Libraries/Adafruit-SD/utility/SdFile.cpp
Normal file
1276
Universal_Serial_Adapter/Libraries/Adafruit-SD/utility/SdFile.cpp
Normal file
File diff suppressed because it is too large
Load diff
232
Universal_Serial_Adapter/Libraries/Adafruit-SD/utility/SdInfo.h
Normal file
232
Universal_Serial_Adapter/Libraries/Adafruit-SD/utility/SdInfo.h
Normal file
|
|
@ -0,0 +1,232 @@
|
|||
/* Arduino Sd2Card Library
|
||||
* Copyright (C) 2009 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino Sd2Card Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino Sd2Card Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef SdInfo_h
|
||||
#define SdInfo_h
|
||||
#include <stdint.h>
|
||||
// Based on the document:
|
||||
//
|
||||
// SD Specifications
|
||||
// Part 1
|
||||
// Physical Layer
|
||||
// Simplified Specification
|
||||
// Version 2.00
|
||||
// September 25, 2006
|
||||
//
|
||||
// www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
|
||||
//------------------------------------------------------------------------------
|
||||
// SD card commands
|
||||
/** GO_IDLE_STATE - init card in spi mode if CS low */
|
||||
uint8_t const CMD0 = 0X00;
|
||||
/** SEND_IF_COND - verify SD Memory Card interface operating condition.*/
|
||||
uint8_t const CMD8 = 0X08;
|
||||
/** SEND_CSD - read the Card Specific Data (CSD register) */
|
||||
uint8_t const CMD9 = 0X09;
|
||||
/** SEND_CID - read the card identification information (CID register) */
|
||||
uint8_t const CMD10 = 0X0A;
|
||||
/** SEND_STATUS - read the card status register */
|
||||
uint8_t const CMD13 = 0X0D;
|
||||
/** READ_BLOCK - read a single data block from the card */
|
||||
uint8_t const CMD17 = 0X11;
|
||||
/** WRITE_BLOCK - write a single data block to the card */
|
||||
uint8_t const CMD24 = 0X18;
|
||||
/** WRITE_MULTIPLE_BLOCK - write blocks of data until a STOP_TRANSMISSION */
|
||||
uint8_t const CMD25 = 0X19;
|
||||
/** ERASE_WR_BLK_START - sets the address of the first block to be erased */
|
||||
uint8_t const CMD32 = 0X20;
|
||||
/** ERASE_WR_BLK_END - sets the address of the last block of the continuous
|
||||
range to be erased*/
|
||||
uint8_t const CMD33 = 0X21;
|
||||
/** ERASE - erase all previously selected blocks */
|
||||
uint8_t const CMD38 = 0X26;
|
||||
/** APP_CMD - escape for application specific command */
|
||||
uint8_t const CMD55 = 0X37;
|
||||
/** READ_OCR - read the OCR register of a card */
|
||||
uint8_t const CMD58 = 0X3A;
|
||||
/** SET_WR_BLK_ERASE_COUNT - Set the number of write blocks to be
|
||||
pre-erased before writing */
|
||||
uint8_t const ACMD23 = 0X17;
|
||||
/** SD_SEND_OP_COMD - Sends host capacity support information and
|
||||
activates the card's initialization process */
|
||||
uint8_t const ACMD41 = 0X29;
|
||||
//------------------------------------------------------------------------------
|
||||
/** status for card in the ready state */
|
||||
uint8_t const R1_READY_STATE = 0X00;
|
||||
/** status for card in the idle state */
|
||||
uint8_t const R1_IDLE_STATE = 0X01;
|
||||
/** status bit for illegal command */
|
||||
uint8_t const R1_ILLEGAL_COMMAND = 0X04;
|
||||
/** start data token for read or write single block*/
|
||||
uint8_t const DATA_START_BLOCK = 0XFE;
|
||||
/** stop token for write multiple blocks*/
|
||||
uint8_t const STOP_TRAN_TOKEN = 0XFD;
|
||||
/** start data token for write multiple blocks*/
|
||||
uint8_t const WRITE_MULTIPLE_TOKEN = 0XFC;
|
||||
/** mask for data response tokens after a write block operation */
|
||||
uint8_t const DATA_RES_MASK = 0X1F;
|
||||
/** write data accepted token */
|
||||
uint8_t const DATA_RES_ACCEPTED = 0X05;
|
||||
//------------------------------------------------------------------------------
|
||||
typedef struct CID {
|
||||
// byte 0
|
||||
uint8_t mid; // Manufacturer ID
|
||||
// byte 1-2
|
||||
char oid[2]; // OEM/Application ID
|
||||
// byte 3-7
|
||||
char pnm[5]; // Product name
|
||||
// byte 8
|
||||
unsigned prv_m : 4; // Product revision n.m
|
||||
unsigned prv_n : 4;
|
||||
// byte 9-12
|
||||
uint32_t psn; // Product serial number
|
||||
// byte 13
|
||||
unsigned mdt_year_high : 4; // Manufacturing date
|
||||
unsigned reserved : 4;
|
||||
// byte 14
|
||||
unsigned mdt_month : 4;
|
||||
unsigned mdt_year_low :4;
|
||||
// byte 15
|
||||
unsigned always1 : 1;
|
||||
unsigned crc : 7;
|
||||
}cid_t;
|
||||
//------------------------------------------------------------------------------
|
||||
// CSD for version 1.00 cards
|
||||
typedef struct CSDV1 {
|
||||
// byte 0
|
||||
unsigned reserved1 : 6;
|
||||
unsigned csd_ver : 2;
|
||||
// byte 1
|
||||
uint8_t taac;
|
||||
// byte 2
|
||||
uint8_t nsac;
|
||||
// byte 3
|
||||
uint8_t tran_speed;
|
||||
// byte 4
|
||||
uint8_t ccc_high;
|
||||
// byte 5
|
||||
unsigned read_bl_len : 4;
|
||||
unsigned ccc_low : 4;
|
||||
// byte 6
|
||||
unsigned c_size_high : 2;
|
||||
unsigned reserved2 : 2;
|
||||
unsigned dsr_imp : 1;
|
||||
unsigned read_blk_misalign :1;
|
||||
unsigned write_blk_misalign : 1;
|
||||
unsigned read_bl_partial : 1;
|
||||
// byte 7
|
||||
uint8_t c_size_mid;
|
||||
// byte 8
|
||||
unsigned vdd_r_curr_max : 3;
|
||||
unsigned vdd_r_curr_min : 3;
|
||||
unsigned c_size_low :2;
|
||||
// byte 9
|
||||
unsigned c_size_mult_high : 2;
|
||||
unsigned vdd_w_cur_max : 3;
|
||||
unsigned vdd_w_curr_min : 3;
|
||||
// byte 10
|
||||
unsigned sector_size_high : 6;
|
||||
unsigned erase_blk_en : 1;
|
||||
unsigned c_size_mult_low : 1;
|
||||
// byte 11
|
||||
unsigned wp_grp_size : 7;
|
||||
unsigned sector_size_low : 1;
|
||||
// byte 12
|
||||
unsigned write_bl_len_high : 2;
|
||||
unsigned r2w_factor : 3;
|
||||
unsigned reserved3 : 2;
|
||||
unsigned wp_grp_enable : 1;
|
||||
// byte 13
|
||||
unsigned reserved4 : 5;
|
||||
unsigned write_partial : 1;
|
||||
unsigned write_bl_len_low : 2;
|
||||
// byte 14
|
||||
unsigned reserved5: 2;
|
||||
unsigned file_format : 2;
|
||||
unsigned tmp_write_protect : 1;
|
||||
unsigned perm_write_protect : 1;
|
||||
unsigned copy : 1;
|
||||
unsigned file_format_grp : 1;
|
||||
// byte 15
|
||||
unsigned always1 : 1;
|
||||
unsigned crc : 7;
|
||||
}csd1_t;
|
||||
//------------------------------------------------------------------------------
|
||||
// CSD for version 2.00 cards
|
||||
typedef struct CSDV2 {
|
||||
// byte 0
|
||||
unsigned reserved1 : 6;
|
||||
unsigned csd_ver : 2;
|
||||
// byte 1
|
||||
uint8_t taac;
|
||||
// byte 2
|
||||
uint8_t nsac;
|
||||
// byte 3
|
||||
uint8_t tran_speed;
|
||||
// byte 4
|
||||
uint8_t ccc_high;
|
||||
// byte 5
|
||||
unsigned read_bl_len : 4;
|
||||
unsigned ccc_low : 4;
|
||||
// byte 6
|
||||
unsigned reserved2 : 4;
|
||||
unsigned dsr_imp : 1;
|
||||
unsigned read_blk_misalign :1;
|
||||
unsigned write_blk_misalign : 1;
|
||||
unsigned read_bl_partial : 1;
|
||||
// byte 7
|
||||
unsigned reserved3 : 2;
|
||||
unsigned c_size_high : 6;
|
||||
// byte 8
|
||||
uint8_t c_size_mid;
|
||||
// byte 9
|
||||
uint8_t c_size_low;
|
||||
// byte 10
|
||||
unsigned sector_size_high : 6;
|
||||
unsigned erase_blk_en : 1;
|
||||
unsigned reserved4 : 1;
|
||||
// byte 11
|
||||
unsigned wp_grp_size : 7;
|
||||
unsigned sector_size_low : 1;
|
||||
// byte 12
|
||||
unsigned write_bl_len_high : 2;
|
||||
unsigned r2w_factor : 3;
|
||||
unsigned reserved5 : 2;
|
||||
unsigned wp_grp_enable : 1;
|
||||
// byte 13
|
||||
unsigned reserved6 : 5;
|
||||
unsigned write_partial : 1;
|
||||
unsigned write_bl_len_low : 2;
|
||||
// byte 14
|
||||
unsigned reserved7: 2;
|
||||
unsigned file_format : 2;
|
||||
unsigned tmp_write_protect : 1;
|
||||
unsigned perm_write_protect : 1;
|
||||
unsigned copy : 1;
|
||||
unsigned file_format_grp : 1;
|
||||
// byte 15
|
||||
unsigned always1 : 1;
|
||||
unsigned crc : 7;
|
||||
}csd2_t;
|
||||
//------------------------------------------------------------------------------
|
||||
// union of old and new style CSD register
|
||||
union csd_t {
|
||||
csd1_t v1;
|
||||
csd2_t v2;
|
||||
};
|
||||
#endif // SdInfo_h
|
||||
|
|
@ -0,0 +1,295 @@
|
|||
/* Arduino SdFat Library
|
||||
* Copyright (C) 2009 by William Greiman
|
||||
*
|
||||
* This file is part of the Arduino SdFat Library
|
||||
*
|
||||
* This Library is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This Library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with the Arduino SdFat Library. If not, see
|
||||
* <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include <SdFat.h>
|
||||
//------------------------------------------------------------------------------
|
||||
// raw block cache
|
||||
// init cacheBlockNumber_to invalid SD block number
|
||||
uint32_t SdVolume::cacheBlockNumber_ = 0XFFFFFFFF;
|
||||
cache_t SdVolume::cacheBuffer_; // 512 byte cache for Sd2Card
|
||||
Sd2Card* SdVolume::sdCard_; // pointer to SD card object
|
||||
uint8_t SdVolume::cacheDirty_ = 0; // cacheFlush() will write block if true
|
||||
uint32_t SdVolume::cacheMirrorBlock_ = 0; // mirror block for second FAT
|
||||
//------------------------------------------------------------------------------
|
||||
// find a contiguous group of clusters
|
||||
uint8_t SdVolume::allocContiguous(uint32_t count, uint32_t* curCluster) {
|
||||
// start of group
|
||||
uint32_t bgnCluster;
|
||||
|
||||
// flag to save place to start next search
|
||||
uint8_t setStart;
|
||||
|
||||
// set search start cluster
|
||||
if (*curCluster) {
|
||||
// try to make file contiguous
|
||||
bgnCluster = *curCluster + 1;
|
||||
|
||||
// don't save new start location
|
||||
setStart = false;
|
||||
} else {
|
||||
// start at likely place for free cluster
|
||||
bgnCluster = allocSearchStart_;
|
||||
|
||||
// save next search start if one cluster
|
||||
setStart = 1 == count;
|
||||
}
|
||||
// end of group
|
||||
uint32_t endCluster = bgnCluster;
|
||||
|
||||
// last cluster of FAT
|
||||
uint32_t fatEnd = clusterCount_ + 1;
|
||||
|
||||
// search the FAT for free clusters
|
||||
for (uint32_t n = 0;; n++, endCluster++) {
|
||||
// can't find space checked all clusters
|
||||
if (n >= clusterCount_) return false;
|
||||
|
||||
// past end - start from beginning of FAT
|
||||
if (endCluster > fatEnd) {
|
||||
bgnCluster = endCluster = 2;
|
||||
}
|
||||
uint32_t f;
|
||||
if (!fatGet(endCluster, &f)) return false;
|
||||
|
||||
if (f != 0) {
|
||||
// cluster in use try next cluster as bgnCluster
|
||||
bgnCluster = endCluster + 1;
|
||||
} else if ((endCluster - bgnCluster + 1) == count) {
|
||||
// done - found space
|
||||
break;
|
||||
}
|
||||
}
|
||||
// mark end of chain
|
||||
if (!fatPutEOC(endCluster)) return false;
|
||||
|
||||
// link clusters
|
||||
while (endCluster > bgnCluster) {
|
||||
if (!fatPut(endCluster - 1, endCluster)) return false;
|
||||
endCluster--;
|
||||
}
|
||||
if (*curCluster != 0) {
|
||||
// connect chains
|
||||
if (!fatPut(*curCluster, bgnCluster)) return false;
|
||||
}
|
||||
// return first cluster number to caller
|
||||
*curCluster = bgnCluster;
|
||||
|
||||
// remember possible next free cluster
|
||||
if (setStart) allocSearchStart_ = bgnCluster + 1;
|
||||
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
uint8_t SdVolume::cacheFlush(void) {
|
||||
if (cacheDirty_) {
|
||||
if (!sdCard_->writeBlock(cacheBlockNumber_, cacheBuffer_.data)) {
|
||||
return false;
|
||||
}
|
||||
// mirror FAT tables
|
||||
if (cacheMirrorBlock_) {
|
||||
if (!sdCard_->writeBlock(cacheMirrorBlock_, cacheBuffer_.data)) {
|
||||
return false;
|
||||
}
|
||||
cacheMirrorBlock_ = 0;
|
||||
}
|
||||
cacheDirty_ = 0;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
uint8_t SdVolume::cacheRawBlock(uint32_t blockNumber, uint8_t action) {
|
||||
if (cacheBlockNumber_ != blockNumber) {
|
||||
if (!cacheFlush()) return false;
|
||||
if (!sdCard_->readBlock(blockNumber, cacheBuffer_.data)) return false;
|
||||
cacheBlockNumber_ = blockNumber;
|
||||
}
|
||||
cacheDirty_ |= action;
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// cache a zero block for blockNumber
|
||||
uint8_t SdVolume::cacheZeroBlock(uint32_t blockNumber) {
|
||||
if (!cacheFlush()) return false;
|
||||
|
||||
// loop take less flash than memset(cacheBuffer_.data, 0, 512);
|
||||
for (uint16_t i = 0; i < 512; i++) {
|
||||
cacheBuffer_.data[i] = 0;
|
||||
}
|
||||
cacheBlockNumber_ = blockNumber;
|
||||
cacheSetDirty();
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// return the size in bytes of a cluster chain
|
||||
uint8_t SdVolume::chainSize(uint32_t cluster, uint32_t* size) const {
|
||||
uint32_t s = 0;
|
||||
do {
|
||||
if (!fatGet(cluster, &cluster)) return false;
|
||||
s += 512UL << clusterSizeShift_;
|
||||
} while (!isEOC(cluster));
|
||||
*size = s;
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// Fetch a FAT entry
|
||||
uint8_t SdVolume::fatGet(uint32_t cluster, uint32_t* value) const {
|
||||
if (cluster > (clusterCount_ + 1)) return false;
|
||||
uint32_t lba = fatStartBlock_;
|
||||
lba += fatType_ == 16 ? cluster >> 8 : cluster >> 7;
|
||||
if (lba != cacheBlockNumber_) {
|
||||
if (!cacheRawBlock(lba, CACHE_FOR_READ)) return false;
|
||||
}
|
||||
if (fatType_ == 16) {
|
||||
*value = cacheBuffer_.fat16[cluster & 0XFF];
|
||||
} else {
|
||||
*value = cacheBuffer_.fat32[cluster & 0X7F] & FAT32MASK;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// Store a FAT entry
|
||||
uint8_t SdVolume::fatPut(uint32_t cluster, uint32_t value) {
|
||||
// error if reserved cluster
|
||||
if (cluster < 2) return false;
|
||||
|
||||
// error if not in FAT
|
||||
if (cluster > (clusterCount_ + 1)) return false;
|
||||
|
||||
// calculate block address for entry
|
||||
uint32_t lba = fatStartBlock_;
|
||||
lba += fatType_ == 16 ? cluster >> 8 : cluster >> 7;
|
||||
|
||||
if (lba != cacheBlockNumber_) {
|
||||
if (!cacheRawBlock(lba, CACHE_FOR_READ)) return false;
|
||||
}
|
||||
// store entry
|
||||
if (fatType_ == 16) {
|
||||
cacheBuffer_.fat16[cluster & 0XFF] = value;
|
||||
} else {
|
||||
cacheBuffer_.fat32[cluster & 0X7F] = value;
|
||||
}
|
||||
cacheSetDirty();
|
||||
|
||||
// mirror second FAT
|
||||
if (fatCount_ > 1) cacheMirrorBlock_ = lba + blocksPerFat_;
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// free a cluster chain
|
||||
uint8_t SdVolume::freeChain(uint32_t cluster) {
|
||||
// clear free cluster location
|
||||
allocSearchStart_ = 2;
|
||||
|
||||
do {
|
||||
uint32_t next;
|
||||
if (!fatGet(cluster, &next)) return false;
|
||||
|
||||
// free cluster
|
||||
if (!fatPut(cluster, 0)) return false;
|
||||
|
||||
cluster = next;
|
||||
} while (!isEOC(cluster));
|
||||
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
/**
|
||||
* Initialize a FAT volume.
|
||||
*
|
||||
* \param[in] dev The SD card where the volume is located.
|
||||
*
|
||||
* \param[in] part The partition to be used. Legal values for \a part are
|
||||
* 1-4 to use the corresponding partition on a device formatted with
|
||||
* a MBR, Master Boot Record, or zero if the device is formatted as
|
||||
* a super floppy with the FAT boot sector in block zero.
|
||||
*
|
||||
* \return The value one, true, is returned for success and
|
||||
* the value zero, false, is returned for failure. Reasons for
|
||||
* failure include not finding a valid partition, not finding a valid
|
||||
* FAT file system in the specified partition or an I/O error.
|
||||
*/
|
||||
uint8_t SdVolume::init(Sd2Card* dev, uint8_t part) {
|
||||
uint32_t volumeStartBlock = 0;
|
||||
sdCard_ = dev;
|
||||
// if part == 0 assume super floppy with FAT boot sector in block zero
|
||||
// if part > 0 assume mbr volume with partition table
|
||||
if (part) {
|
||||
if (part > 4)return false;
|
||||
if (!cacheRawBlock(volumeStartBlock, CACHE_FOR_READ)) return false;
|
||||
part_t* p = &cacheBuffer_.mbr.part[part-1];
|
||||
if ((p->boot & 0X7F) !=0 ||
|
||||
p->totalSectors < 100 ||
|
||||
p->firstSector == 0) {
|
||||
// not a valid partition
|
||||
return false;
|
||||
}
|
||||
volumeStartBlock = p->firstSector;
|
||||
}
|
||||
if (!cacheRawBlock(volumeStartBlock, CACHE_FOR_READ)) return false;
|
||||
bpb_t* bpb = &cacheBuffer_.fbs.bpb;
|
||||
if (bpb->bytesPerSector != 512 ||
|
||||
bpb->fatCount == 0 ||
|
||||
bpb->reservedSectorCount == 0 ||
|
||||
bpb->sectorsPerCluster == 0) {
|
||||
// not valid FAT volume
|
||||
return false;
|
||||
}
|
||||
fatCount_ = bpb->fatCount;
|
||||
blocksPerCluster_ = bpb->sectorsPerCluster;
|
||||
|
||||
// determine shift that is same as multiply by blocksPerCluster_
|
||||
clusterSizeShift_ = 0;
|
||||
while (blocksPerCluster_ != (1 << clusterSizeShift_)) {
|
||||
// error if not power of 2
|
||||
if (clusterSizeShift_++ > 7) return false;
|
||||
}
|
||||
blocksPerFat_ = bpb->sectorsPerFat16 ?
|
||||
bpb->sectorsPerFat16 : bpb->sectorsPerFat32;
|
||||
|
||||
fatStartBlock_ = volumeStartBlock + bpb->reservedSectorCount;
|
||||
|
||||
// count for FAT16 zero for FAT32
|
||||
rootDirEntryCount_ = bpb->rootDirEntryCount;
|
||||
|
||||
// directory start for FAT16 dataStart for FAT32
|
||||
rootDirStart_ = fatStartBlock_ + bpb->fatCount * blocksPerFat_;
|
||||
|
||||
// data start for FAT16 and FAT32
|
||||
dataStartBlock_ = rootDirStart_ + ((32 * bpb->rootDirEntryCount + 511)/512);
|
||||
|
||||
// total blocks for FAT16 or FAT32
|
||||
uint32_t totalBlocks = bpb->totalSectors16 ?
|
||||
bpb->totalSectors16 : bpb->totalSectors32;
|
||||
// total data blocks
|
||||
clusterCount_ = totalBlocks - (dataStartBlock_ - volumeStartBlock);
|
||||
|
||||
// divide by cluster size to get cluster count
|
||||
clusterCount_ >>= clusterSizeShift_;
|
||||
|
||||
// FAT type is determined by cluster count
|
||||
if (clusterCount_ < 4085) {
|
||||
fatType_ = 12;
|
||||
} else if (clusterCount_ < 65525) {
|
||||
fatType_ = 16;
|
||||
} else {
|
||||
rootDirStart_ = bpb->fat32RootCluster;
|
||||
fatType_ = 32;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
Reference in a new issue