329 lines
7.7 KiB
C
329 lines
7.7 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include <string.h>
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#include "ch.h"
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#include "hal.h"
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#include "chprintf.h"
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#include "shell.h"
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#include "ff.h"
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/*===========================================================================*/
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/* Card insertion monitor. */
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/*===========================================================================*/
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#define POLLING_INTERVAL 10
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#define POLLING_DELAY 10
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/**
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* @brief Card monitor timer.
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*/
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static virtual_timer_t tmr;
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/**
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* @brief Debounce counter.
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*/
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static unsigned cnt;
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/**
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* @brief Card event sources.
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*/
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static event_source_t inserted_event, removed_event;
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/**
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* @brief Insertion monitor timer callback function.
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*
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* @param[in] p pointer to the @p BaseBlockDevice object
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*
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* @notapi
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*/
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static void tmrfunc(void *p) {
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BaseBlockDevice *bbdp = p;
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chSysLockFromISR();
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if (cnt > 0) {
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if (blkIsInserted(bbdp)) {
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if (--cnt == 0) {
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chEvtBroadcastI(&inserted_event);
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}
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}
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else
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cnt = POLLING_INTERVAL;
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}
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else {
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if (!blkIsInserted(bbdp)) {
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cnt = POLLING_INTERVAL;
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chEvtBroadcastI(&removed_event);
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}
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}
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chVTSetI(&tmr, TIME_MS2I(POLLING_DELAY), tmrfunc, bbdp);
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chSysUnlockFromISR();
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}
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/**
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* @brief Polling monitor start.
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*
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* @param[in] p pointer to an object implementing @p BaseBlockDevice
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*
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* @notapi
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*/
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static void tmr_init(void *p) {
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chEvtObjectInit(&inserted_event);
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chEvtObjectInit(&removed_event);
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chSysLock();
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cnt = POLLING_INTERVAL;
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chVTSetI(&tmr, TIME_MS2I(POLLING_DELAY), tmrfunc, p);
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chSysUnlock();
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}
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/*===========================================================================*/
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/* FatFs related. */
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/*===========================================================================*/
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/**
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* @brief FS object.
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*/
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static FATFS SDC_FS;
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/* FS mounted and ready.*/
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static bool fs_ready = FALSE;
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/* Maximum speed SPI configuration (18MHz, CPHA=0, CPOL=0, MSb first).*/
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static SPIConfig hs_spicfg = {false, NULL, IOPORT2, GPIOB_SPI2NSS, 0, 0};
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/* Low speed SPI configuration (281.250kHz, CPHA=0, CPOL=0, MSb first).*/
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static SPIConfig ls_spicfg = {false, NULL, IOPORT2, GPIOB_SPI2NSS,
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SPI_CR1_BR_2 | SPI_CR1_BR_1,
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0};
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/* MMC/SD over SPI driver configuration.*/
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static MMCConfig mmccfg = {&SPID2, &ls_spicfg, &hs_spicfg};
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/* Generic large buffer.*/
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static uint8_t fbuff[1024];
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static FRESULT scan_files(BaseSequentialStream *chp, char *path) {
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static FILINFO fno;
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FRESULT res;
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DIR dir;
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size_t i;
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char *fn;
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res = f_opendir(&dir, path);
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if (res == FR_OK) {
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i = strlen(path);
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while (((res = f_readdir(&dir, &fno)) == FR_OK) && fno.fname[0]) {
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if (FF_FS_RPATH && fno.fname[0] == '.')
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continue;
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fn = fno.fname;
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if (fno.fattrib & AM_DIR) {
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*(path + i) = '/';
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strcpy(path + i + 1, fn);
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res = scan_files(chp, path);
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*(path + i) = '\0';
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if (res != FR_OK)
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break;
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}
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else {
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chprintf(chp, "%s/%s\r\n", path, fn);
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}
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}
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}
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return res;
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}
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/*===========================================================================*/
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/* Command line related. */
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/*===========================================================================*/
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#define SHELL_WA_SIZE THD_WORKING_AREA_SIZE(2048)
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static void cmd_tree(BaseSequentialStream *chp, int argc, char *argv[]) {
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FRESULT err;
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uint32_t clusters;
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FATFS *fsp;
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(void)argv;
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if (argc > 0) {
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chprintf(chp, "Usage: tree\r\n");
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return;
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}
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if (!fs_ready) {
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chprintf(chp, "File System not mounted\r\n");
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return;
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}
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err = f_getfree("/", &clusters, &fsp);
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if (err != FR_OK) {
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chprintf(chp, "FS: f_getfree() failed\r\n");
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return;
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}
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chprintf(chp,
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"FS: %lu free clusters, %lu sectors per cluster, %lu bytes free\r\n",
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clusters, (uint32_t)SDC_FS.csize,
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clusters * (uint32_t)SDC_FS.csize * (uint32_t)MMCSD_BLOCK_SIZE);
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fbuff[0] = 0;
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scan_files(chp, (char *)fbuff);
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}
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static const ShellCommand commands[] = {
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{"tree", cmd_tree},
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{NULL, NULL}
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};
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static const ShellConfig shell_cfg1 = {
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(BaseSequentialStream *)&SD2,
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commands
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};
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/*===========================================================================*/
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/* Main and generic code. */
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/*===========================================================================*/
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static thread_t *shelltp = NULL;
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MMCDriver MMCD1;
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/*
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* Card insertion event.
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*/
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static void InsertHandler(eventid_t id) {
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FRESULT err;
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(void)id;
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/*
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* On insertion SDC initialization and FS mount.
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*/
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if (mmcConnect(&MMCD1))
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return;
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err = f_mount(&SDC_FS, "/", 1);
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if (err != FR_OK) {
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mmcDisconnect(&MMCD1);
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return;
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}
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fs_ready = TRUE;
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}
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/*
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* Card removal event.
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*/
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static void RemoveHandler(eventid_t id) {
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(void)id;
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mmcDisconnect(&MMCD1);
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fs_ready = FALSE;
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}
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/*
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* Shell exit event.
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*/
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static void ShellHandler(eventid_t id) {
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(void)id;
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if (chThdTerminatedX(shelltp)) {
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chThdWait(shelltp); /* Returning memory to heap. */
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shelltp = NULL;
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}
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}
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/*
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* Blinker thread.
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*/
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static THD_WORKING_AREA(waThread1, 128);
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static THD_FUNCTION(Thread1, arg) {
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(void)arg;
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chRegSetThreadName("blinker");
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while (TRUE) {
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palTogglePad(IOPORT3, GPIOC_LED);
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if (fs_ready)
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chThdSleepMilliseconds(200);
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else
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chThdSleepMilliseconds(500);
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}
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}
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/*
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* Application entry point.
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*/
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int main(void) {
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static const evhandler_t evhndl[] = {
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InsertHandler,
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RemoveHandler,
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ShellHandler
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};
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event_listener_t el0, el1, el2;
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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/*
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* Activates the serial driver 1 using the driver default configuration.
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* PA9(TX) and PA10(RX) are routed to USART1.
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*/
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sdStart(&SD2, NULL);
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/*
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* Shell manager initialization.
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*/
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shellInit();
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/*
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* Initializes the MMC driver to work with SPI2.
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*/
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palSetPadMode(IOPORT2, GPIOB_SPI2NSS, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPad(IOPORT2, GPIOB_SPI2NSS);
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mmcObjectInit(&MMCD1);
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mmcStart(&MMCD1, &mmccfg);
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/*
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* Activates the card insertion monitor.
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*/
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tmr_init(&MMCD1);
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/*
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* Creates the blinker thread.
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*/
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO+1, Thread1, NULL);
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/*
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* Normal main() thread activity, handling SD card events and shell
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* start/exit.
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*/
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chEvtRegister(&inserted_event, &el0, 0);
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chEvtRegister(&removed_event, &el1, 1);
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chEvtRegister(&shell_terminated, &el2, 2);
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while (true) {
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if (!shelltp) {
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shelltp = chThdCreateFromHeap(NULL, SHELL_WA_SIZE,
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"shell", NORMALPRIO + 1,
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shellThread, (void *)&shell_cfg1);
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}
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chEvtDispatch(evhndl, chEvtWaitOneTimeout(ALL_EVENTS, TIME_MS2I(500)));
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}
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}
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