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/*
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include <stdio.h>
#include <string.h>
#include "ch.h"
#include "hal.h"
#include "test.h"
#include "shell.h"
#include "chprintf.h"
#include "evtimer.h"
#include "ff.h"
/*===========================================================================*/
/* Card insertion monitor. */
/*===========================================================================*/
#define POLLING_INTERVAL 10
#define POLLING_DELAY 10
/**
* @brief Card monitor timer.
*/
static VirtualTimer tmr;
/**
* @brief Debounce counter.
*/
static unsigned cnt;
/**
* @brief Card event sources.
*/
static EventSource inserted_event, removed_event;
/**
* @brief Insertion monitor timer callback function.
*
* @param[in] p pointer to the @p BaseBlockDevice object
*
* @notapi
*/
static void tmrfunc(void *p) {
BaseBlockDevice *bbdp = p;
/* The presence check is performed only while the driver is not in a
transfer state because it is often performed by changing the mode of
the pin connected to the CS/D3 contact of the card, this could disturb
the transfer.*/
blkstate_t state = blkGetDriverState(bbdp);
chSysLockFromIsr();
if ((state != BLK_READING) && (state != BLK_WRITING)) {
/* Safe to perform the check.*/
if (cnt > 0) {
if (blkIsInserted(bbdp)) {
if (--cnt == 0) {
chEvtBroadcastI(&inserted_event);
}
}
else
cnt = POLLING_INTERVAL;
}
else {
if (!blkIsInserted(bbdp)) {
cnt = POLLING_INTERVAL;
chEvtBroadcastI(&removed_event);
}
}
}
chVTSetI(&tmr, MS2ST(POLLING_DELAY), tmrfunc, bbdp);
chSysUnlockFromIsr();
}
/**
* @brief Polling monitor start.
*
* @param[in] p pointer to an object implementing @p BaseBlockDevice
*
* @notapi
*/
static void tmr_init(void *p) {
chEvtInit(&inserted_event);
chEvtInit(&removed_event);
chSysLock();
cnt = POLLING_INTERVAL;
chVTSetI(&tmr, MS2ST(POLLING_DELAY), tmrfunc, p);
chSysUnlock();
}
/*===========================================================================*/
/* FatFs related. */
/*===========================================================================*/
#define MAX_SPI_BITRATE 100
#define MIN_SPI_BITRATE 250
/**
* @brief FS object.
*/
FATFS MMC_FS;
/**
* MMC driver instance.
*/
MMCDriver MMCD1;
/* FS mounted and ready.*/
static bool_t fs_ready = FALSE;
/* Maximum speed SPI configuration (__MHz, NCPHA=1, CPOL=0).*/
static SPIConfig hs_spicfg = {
NULL,
IOPORT1,
PIOA_CS_MMC,
(MAX_SPI_BITRATE << 8) | AT91C_SPI_NCPHA | AT91C_SPI_BITS_8
};
/* Low speed SPI configuration (192kHz, NCPHA=1, CPOL=0).*/
static SPIConfig ls_spicfg = {
NULL,
IOPORT1,
PIOA_CS_MMC,
(MIN_SPI_BITRATE << 8) | AT91C_SPI_NCPHA | AT91C_SPI_BITS_8
};
/* MMC/SD over SPI driver configuration.*/
static MMCConfig mmccfg = {&SPID1, &ls_spicfg, &hs_spicfg};
/* Generic large buffer.*/
uint8_t fbuff[1024];
static FRESULT scan_files(BaseSequentialStream *chp, char *path) {
FRESULT res;
FILINFO fno;
DIR dir;
int i;
char *fn;
#if _USE_LFN
fno.lfname = 0;
fno.lfsize = 0;
#endif
res = f_opendir(&dir, path);
if (res == FR_OK) {
i = strlen(path);
for (;;) {
res = f_readdir(&dir, &fno);
if (res != FR_OK || fno.fname[0] == 0)
break;
if (fno.fname[0] == '.')
continue;
fn = fno.fname;
if (fno.fattrib & AM_DIR) {
path[i++] = '/';
strcpy(&path[i], fn);
res = scan_files(chp, path);
if (res != FR_OK)
break;
path[--i] = 0;
}
else {
chprintf(chp, "%s/%s\r\n", path, fn);
}
}
}
return res;
}
/*===========================================================================*/
/* Command line related. */
/*===========================================================================*/
#define SHELL_WA_SIZE THD_WA_SIZE(1024)
#define TEST_WA_SIZE THD_WA_SIZE(256)
static void cmd_mem(BaseSequentialStream *chp, int argc, char *argv[]) {
size_t n, size;
(void)argv;
if (argc > 0) {
chprintf(chp, "Usage: mem\r\n");
return;
}
n = chHeapStatus(NULL, &size);
chprintf(chp, "core free memory : %u bytes\r\n", chCoreStatus());
chprintf(chp, "heap fragments : %u\r\n", n);
chprintf(chp, "heap free total : %u bytes\r\n", size);
}
static void cmd_threads(BaseSequentialStream *chp, int argc, char *argv[]) {
static const char *states[] = {THD_STATE_NAMES};
Thread *tp;
(void)argv;
if (argc > 0) {
chprintf(chp, "Usage: threads\r\n");
return;
}
chprintf(chp, " addr stack prio refs state time\r\n");
tp = chRegFirstThread();
do {
chprintf(chp, "%.8lx %.8lx %4lu %4lu %9s %lu\r\n",
(uint32_t)tp, (uint32_t)tp->p_ctx.r13,
(uint32_t)tp->p_prio, (uint32_t)(tp->p_refs - 1),
states[tp->p_state], (uint32_t)tp->p_time);
tp = chRegNextThread(tp);
} while (tp != NULL);
}
static void cmd_test(BaseSequentialStream *chp, int argc, char *argv[]) {
Thread *tp;
(void)argv;
if (argc > 0) {
chprintf(chp, "Usage: test\r\n");
return;
}
tp = chThdCreateFromHeap(NULL, TEST_WA_SIZE, chThdGetPriority(),
TestThread, chp);
if (tp == NULL) {
chprintf(chp, "out of memory\r\n");
return;
}
chThdWait(tp);
}
static void cmd_tree(BaseSequentialStream *chp, int argc, char *argv[]) {
FRESULT err;
uint32_t clusters;
FATFS *fsp;
(void)argv;
if (argc > 0) {
chprintf(chp, "Usage: tree\r\n");
return;
}
if (!fs_ready) {
chprintf(chp, "File System not mounted\r\n");
return;
}
err = f_getfree("/", &clusters, &fsp);
if (err != FR_OK) {
chprintf(chp, "FS: f_getfree() failed\r\n");
return;
}
chprintf(chp,
"FS: %lu free clusters, %lu sectors per cluster, %lu bytes free\r\n",
clusters, (uint32_t)MMC_FS.csize,
clusters * (uint32_t)MMC_FS.csize * (uint32_t)MMC_SECTOR_SIZE);
fbuff[0] = 0;
scan_files(chp, (char *)fbuff);
}
static const ShellCommand commands[] = {
{"mem", cmd_mem},
{"threads", cmd_threads},
{"test", cmd_test},
{"tree", cmd_tree},
{NULL, NULL}
};
static const ShellConfig shell_cfg1 = {
(BaseSequentialStream *)&SD1,
commands
};
/*===========================================================================*/
/* Main and generic code. */
/*===========================================================================*/
/*
* LCD blinker thread, times are in milliseconds.
*/
static WORKING_AREA(waThread1, 128);
static msg_t Thread1(void *p) {
(void)p;
chRegSetThreadName("blinker");
while (TRUE) {
palSetPad(IOPORT2, PIOB_LCD_BL);
chThdSleepMilliseconds(100);
palClearPad(IOPORT2, PIOB_LCD_BL);
chThdSleepMilliseconds(900);
}
return 0;
}
/*
* MMC card insertion event.
*/
static void InsertHandler(eventid_t id) {
FRESULT err;
(void)id;
/*
* On insertion MMC initialization and FS mount.
*/
if (mmcConnect(&MMCD1)) {
return;
}
err = f_mount(0, &MMC_FS);
if (err != FR_OK) {
mmcDisconnect(&MMCD1);
return;
}
fs_ready = TRUE;
}
/*
* MMC card removal event.
*/
static void RemoveHandler(eventid_t id) {
(void)id;
mmcDisconnect(&MMCD1);
fs_ready = FALSE;
}
/*
* Application entry point.
*/
int main(void) {
static const evhandler_t evhndl[] = {
InsertHandler,
RemoveHandler
};
Thread *shelltp = NULL;
struct EventListener el0, el1;
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/*
* Activates the serial driver 1 using the driver default configuration.
*/
sdStart(&SD1, NULL);
/*
* Shell manager initialization.
*/
shellInit();
/*
* Initializes the MMC driver to work with SPI.
*/
palSetPadMode(IOPORT1, PIOA_CS_MMC, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(IOPORT1, PIOA_CS_MMC);
mmcObjectInit(&MMCD1);
mmcStart(&MMCD1, &mmccfg);
/*
* Activates the card insertion monitor.
*/
tmr_init(&MMCD1);
/*
* Creates the blinker threads.
*/
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
/*
* Normal main() thread activity, in this demo it does nothing except
* sleeping in a loop and listen for events.
*/
chEvtRegister(&inserted_event, &el0, 0);
chEvtRegister(&removed_event, &el1, 1);
while (TRUE) {
if (!shelltp)
shelltp = shellCreate(&shell_cfg1, SHELL_WA_SIZE, NORMALPRIO);
else if (chThdTerminated(shelltp)) {
chThdRelease(shelltp); /* Recovers memory of the previous shell. */
shelltp = NULL; /* Triggers spawning of a new shell. */
}
chEvtDispatch(evhndl, chEvtWaitOneTimeout(ALL_EVENTS, MS2ST(500)));
}
return 0;
}
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