tinySA/demos/ARMCM3-STM32F103-FATFS-GCC/main.c

/*
    ChibiOS/RT - Copyright (C) 2006-2007 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 <ch.h>
#include <pal.h>
#include <serial.h>
#include <spi.h>
#include <mmc_spi.h>
#include <evtimer.h>
#include <test.h>

#include <ff.h>

#include "board.h"

/*
 * Maximum speed SPI configuration (18MHz, CPHA=0, CPOL=0, MSb first).
 */
static SPIConfig hs_spicfg = {
  IOPORT2, GPIOB_SPI2NSS, 0
};

/*
 * Low speed SPI configuration (281.250KHz, CPHA=0, CPOL=0, MSb first).
 */
static SPIConfig ls_spicfg = {
  IOPORT2, GPIOB_SPI2NSS, SPI_CR1_BR_2 | SPI_CR1_BR_1
};

/*
 * MMC driver instance.
 */
MMCDriver MMCD1;

/*
 * MMC configuration (empty).
 */
static const MMCConfig mmc_cfg = {};

/*
 * Card insertion verification.
 */
static bool_t mmc_is_inserted(void) {

  return (bool_t)palReadPad(IOPORT3, GPIOC_MMCCP);
}

/*
 * Card protection verification.
 */
static bool_t mmc_is_protected(void) {

  return (bool_t)palReadPad(IOPORT3, GPIOC_MMCWP);
}

/**
 * @brief FS object.
 */
FATFS MMC_FS;

/*
 * Red LEDs blinker thread, times are in milliseconds.
 */
static WORKING_AREA(waThread1, 512);
static msg_t Thread1(void *arg) {

  (void)arg;
  while (TRUE) {
    palClearPad(IOPORT3, GPIOC_LED);
    chThdSleepMilliseconds(500);
    palSetPad(IOPORT3, GPIOC_LED);
    chThdSleepMilliseconds(500);
  }
  return 0;
}

/*
 * Executed as event handler at 500mS intervals.
 */
static void TimerHandler(eventid_t id) {

  (void)id;
  if (palReadPad(IOPORT1, GPIOA_BUTTON))
    TestThread(&SD2);
}

/*
 * 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;
  }
}

/*
 * MMC card removal event.
 */
static void RemoveHandler(eventid_t id) {

  (void)id;
}

/*
 * Entry point, note, the main() function is already a thread in the system
 * on entry.
 */
int main(int argc, char **argv) {
  static const evhandler_t evhndl[] = {
    TimerHandler,
    InsertHandler,
    RemoveHandler
  };
  static EvTimer evt;
  struct EventListener el0, el1, el2;

  (void)argc;
  (void)argv;

  /*
   * Activates the serial driver 2 using the driver default configuration.
   */
  sdStart(&SD2, NULL);

  /*
   * Initializes the MMC driver to work with SPI2.
   */
  palSetPadMode(IOPORT2, GPIOB_SPI2NSS, PAL_MODE_OUTPUT_PUSHPULL);
  palSetPad(IOPORT2, GPIOB_SPI2NSS);
  mmcObjectInit(&MMCD1, &SPID2,
                &ls_spicfg, &hs_spicfg,
                mmc_is_protected, mmc_is_inserted);
  mmcStart(&MMCD1, &mmc_cfg);

  /*
   * Creates the blinker thread.
   */
  chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);

  /*
   * Normal main() thread activity, in this demo it does nothing except
   * sleeping in a loop and listed for events.
   */
  evtInit(&evt, MS2ST(500));            /* Initializes an event timer object.   */
  evtStart(&evt);                       /* Starts the event timer.              */
  chEvtRegister(&evt.et_es, &el0, 0);   /* Registers on the timer event source. */
  chEvtRegister(&MMCD1.mmc_inserted_event, &el1, 1);
  chEvtRegister(&MMCD1.mmc_removed_event, &el2, 2);
  while (TRUE)
    chEvtDispatch(evhndl, chEvtWaitOne(ALL_EVENTS));
  return 0;
}