From 5d210be76f879bcc11f441b7cc4eb9a3f49b28db Mon Sep 17 00:00:00 2001 From: gdisirio Date: Sat, 14 Jan 2017 18:31:02 +0000 Subject: Added MMC-SPI demo. git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10050 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- .../RT-STM32F103-OLIMEX_STM32_P103-FATFS/main.c | 329 +++++++++++++++++++++ 1 file changed, 329 insertions(+) create mode 100755 demos/STM32/RT-STM32F103-OLIMEX_STM32_P103-FATFS/main.c (limited to 'demos/STM32/RT-STM32F103-OLIMEX_STM32_P103-FATFS/main.c') diff --git a/demos/STM32/RT-STM32F103-OLIMEX_STM32_P103-FATFS/main.c b/demos/STM32/RT-STM32F103-OLIMEX_STM32_P103-FATFS/main.c new file mode 100755 index 000000000..2d09456d6 --- /dev/null +++ b/demos/STM32/RT-STM32F103-OLIMEX_STM32_P103-FATFS/main.c @@ -0,0 +1,329 @@ +/* + ChibiOS - Copyright (C) 2006..2016 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 + +#include "ch.h" +#include "hal.h" +#include "ch_test.h" + +#include "chprintf.h" +#include "shell.h" + +#include "ff.h" + +/*===========================================================================*/ +/* Card insertion monitor. */ +/*===========================================================================*/ + +#define POLLING_INTERVAL 10 +#define POLLING_DELAY 10 + +/** + * @brief Card monitor timer. + */ +static virtual_timer_t tmr; + +/** + * @brief Debounce counter. + */ +static unsigned cnt; + +/** + * @brief Card event sources. + */ +static event_source_t 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; + + chSysLockFromISR(); + 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) { + + chEvtObjectInit(&inserted_event); + chEvtObjectInit(&removed_event); + chSysLock(); + cnt = POLLING_INTERVAL; + chVTSetI(&tmr, MS2ST(POLLING_DELAY), tmrfunc, p); + chSysUnlock(); +} + +/*===========================================================================*/ +/* FatFs related. */ +/*===========================================================================*/ + +/** + * @brief FS object. + */ +static FATFS SDC_FS; + +/* FS mounted and ready.*/ +static bool fs_ready = FALSE; + +/* Maximum speed SPI configuration (18MHz, CPHA=0, CPOL=0, MSb first).*/ +static SPIConfig hs_spicfg = {NULL, IOPORT2, GPIOB_SPI2NSS, 0, 0}; + +/* Low speed SPI configuration (281.250kHz, CPHA=0, CPOL=0, MSb first).*/ +static SPIConfig ls_spicfg = {NULL, IOPORT2, GPIOB_SPI2NSS, + SPI_CR1_BR_2 | SPI_CR1_BR_1, + 0}; + +/* MMC/SD over SPI driver configuration.*/ +static MMCConfig mmccfg = {&SPID2, &ls_spicfg, &hs_spicfg}; + +/* Generic large buffer.*/ +static uint8_t fbuff[1024]; + +static FRESULT scan_files(BaseSequentialStream *chp, char *path) { + static FILINFO fno; + FRESULT res; + DIR dir; + size_t i; + char *fn; + + res = f_opendir(&dir, path); + if (res == FR_OK) { + i = strlen(path); + while (((res = f_readdir(&dir, &fno)) == FR_OK) && fno.fname[0]) { + if (_FS_RPATH && fno.fname[0] == '.') + continue; + fn = fno.fname; + if (fno.fattrib & AM_DIR) { + *(path + i) = '/'; + strcpy(path + i + 1, fn); + res = scan_files(chp, path); + *(path + i) = '\0'; + if (res != FR_OK) + break; + } + else { + chprintf(chp, "%s/%s\r\n", path, fn); + } + } + } + return res; +} + +/*===========================================================================*/ +/* Command line related. */ +/*===========================================================================*/ + +#define SHELL_WA_SIZE THD_WORKING_AREA_SIZE(2048) + +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)SDC_FS.csize, + clusters * (uint32_t)SDC_FS.csize * (uint32_t)MMCSD_BLOCK_SIZE); + fbuff[0] = 0; + scan_files(chp, (char *)fbuff); +} + +static const ShellCommand commands[] = { + {"tree", cmd_tree}, + {NULL, NULL} +}; + +static const ShellConfig shell_cfg1 = { + (BaseSequentialStream *)&SD2, + commands +}; + +/*===========================================================================*/ +/* Main and generic code. */ +/*===========================================================================*/ + +static thread_t *shelltp = NULL; +MMCDriver MMCD1; + +/* + * Card insertion event. + */ +static void InsertHandler(eventid_t id) { + FRESULT err; + + (void)id; + /* + * On insertion SDC initialization and FS mount. + */ + if (mmcConnect(&MMCD1)) + return; + + err = f_mount(&SDC_FS, "/", 1); + if (err != FR_OK) { + mmcDisconnect(&MMCD1); + return; + } + fs_ready = TRUE; +} + +/* + * Card removal event. + */ +static void RemoveHandler(eventid_t id) { + + (void)id; + mmcDisconnect(&MMCD1); + fs_ready = FALSE; +} + +/* + * Shell exit event. + */ +static void ShellHandler(eventid_t id) { + + (void)id; + if (chThdTerminatedX(shelltp)) { + chThdWait(shelltp); /* Returning memory to heap. */ + shelltp = NULL; + } +} + +/* + * Blinker thread. + */ +static THD_WORKING_AREA(waThread1, 128); +static THD_FUNCTION(Thread1, arg) { + + (void)arg; + + chRegSetThreadName("blinker"); + while (TRUE) { + palTogglePad(IOPORT3, GPIOC_LED); + if (fs_ready) + chThdSleepMilliseconds(200); + else + chThdSleepMilliseconds(500); + } +} + +/* + * Application entry point. + */ +int main(void) { + static const evhandler_t evhndl[] = { + InsertHandler, + RemoveHandler, + ShellHandler + }; + event_listener_t el0, el1, el2; + + /* + * 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. + * PA9(TX) and PA10(RX) are routed to USART1. + */ + sdStart(&SD2, NULL); + + /* + * Shell manager initialization. + */ + shellInit(); + + /* + * Initializes the MMC driver to work with SPI2. + */ + palSetPadMode(IOPORT2, GPIOB_SPI2NSS, PAL_MODE_OUTPUT_PUSHPULL); + palSetPad(IOPORT2, GPIOB_SPI2NSS); + mmcObjectInit(&MMCD1); + mmcStart(&MMCD1, &mmccfg); + + /* + * Activates the card insertion monitor. + */ + tmr_init(&MMCD1); + + /* + * Creates the blinker thread. + */ + chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO+1, Thread1, NULL); + + /* + * Normal main() thread activity, handling SD card events and shell + * start/exit. + */ + chEvtRegister(&inserted_event, &el0, 0); + chEvtRegister(&removed_event, &el1, 1); + chEvtRegister(&shell_terminated, &el2, 2); + while (true) { + if (!shelltp) { + shelltp = chThdCreateFromHeap(NULL, SHELL_WA_SIZE, + "shell", NORMALPRIO + 1, + shellThread, (void *)&shell_cfg1); + } + chEvtDispatch(evhndl, chEvtWaitOneTimeout(ALL_EVENTS, MS2ST(500))); + } +} -- cgit v1.2.3