78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
|
/* Arduino SdFat Library
|
||
|
|
* Copyright (C) 2012 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>
|
||
|
|
#include <SdFatUtil.h>
|
||
|
|
#ifdef __arm__
|
||
|
|
// should use uinstd.h to define sbrk but Due causes a conflict
|
||
|
|
extern "C" char* sbrk(int incr);
|
||
|
|
#endif // __arm__
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** Amount of free RAM
|
||
|
|
* \return The number of free bytes.
|
||
|
|
*/
|
||
|
|
int SdFatUtil::FreeRam() {
|
||
|
|
char top;
|
||
|
|
#ifdef __arm__
|
||
|
|
return &top - reinterpret_cast<char*>(sbrk(0));
|
||
|
|
#elif defined(CORE_TEENSY) || (ARDUINO > 103 && ARDUINO != 151)
|
||
|
|
extern char *__brkval;
|
||
|
|
return &top - __brkval;
|
||
|
|
#else // __arm__
|
||
|
|
extern char *__brkval;
|
||
|
|
extern char *__malloc_heap_start;
|
||
|
|
return __brkval ? &top - __brkval : &top - __malloc_heap_start;
|
||
|
|
#endif // __arm__
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** %Print a string in flash memory.
|
||
|
|
*
|
||
|
|
* \param[in] pr Print object for output.
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
void SdFatUtil::print_P(Print* pr, PGM_P str) {
|
||
|
|
for (uint8_t c; (c = pgm_read_byte(str)); str++) pr->write(c);
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** %Print a string in flash memory followed by a CR/LF.
|
||
|
|
*
|
||
|
|
* \param[in] pr Print object for output.
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
void SdFatUtil::println_P(Print* pr, PGM_P str) {
|
||
|
|
print_P(pr, str);
|
||
|
|
pr->println();
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** %Print a string in flash memory to Serial.
|
||
|
|
*
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
void SdFatUtil::SerialPrint_P(PGM_P str) {
|
||
|
|
print_P(SdFat::stdOut(), str);
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** %Print a string in flash memory to Serial followed by a CR/LF.
|
||
|
|
*
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
void SdFatUtil::SerialPrintln_P(PGM_P str) {
|
||
|
|
println_P(SdFat::stdOut(), str);
|
||
|
|
}
|