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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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"
#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_MMC_NPCS0,
(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_MMC_NPCS0,
(MIN_SPI_BITRATE << 8) | AT91C_SPI_NCPHA | AT91C_SPI_BITS_8
};
/* Card insertion verification.*/
static bool_t mmc_is_inserted(void) {
return !palReadPad(IOPORT1, PIOA_MMC_CP);
}
/* Card protection verification.*/
static bool_t mmc_is_protected(void) {
return palReadPad(IOPORT1, PIOA_MMC_WP);
}
/* Generic large buffer.*/
uint8_t fbuff[1024];
static FRESULT scan_files(BaseChannel *chp, char *path) {
FRESULT res;
FILINFO fno;
DIR dir;
int i;
char *fn;
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(BaseChannel *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(BaseChannel *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(BaseChannel *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(BaseChannel *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 = {
(BaseChannel *)&SD1,
commands
};
/*
* LED1 blinker thread, times are in milliseconds.
*/
static WORKING_AREA(waThread1, 128);
static msg_t Thread1(void *arg) {
(void)arg;
chRegSetThreadName("blinker1");
while (TRUE) {
palTogglePad(IOPORT1, PIOA_LED1);
if (fs_ready)
chThdSleepMilliseconds(200);
else
chThdSleepMilliseconds(500);
}
return 0;
}
/*
* LED2 blinker thread, times are in milliseconds.
*/
static WORKING_AREA(waThread2, 64);
static msg_t Thread2(void *p) {
(void)p;
chRegSetThreadName("blinker2");
while (TRUE) {
palSetPad(IOPORT1, PIOA_LED2);
chThdSleepMilliseconds(100);
palClearPad(IOPORT1, PIOA_LED2);
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;
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_MMC_NPCS0, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(IOPORT1, PIOA_MMC_NPCS0);
mmcObjectInit(&MMCD1, &SPID1,
&ls_spicfg, &hs_spicfg,
mmc_is_protected, mmc_is_inserted);
mmcStart(&MMCD1, NULL);
/*
* Creates the blinker threads.
*/
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
chThdCreateStatic(waThread2, sizeof(waThread2), NORMALPRIO, Thread2, NULL);
/*
* Normal main() thread activity, in this demo it does nothing except
* sleeping in a loop and listen for events.
*/
chEvtRegister(&MMCD1.inserted_event, &el0, 0);
chEvtRegister(&MMCD1.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, chEvtWaitOne(ALL_EVENTS));
}
return 0;
}
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