/*
    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
                 2011,2012 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 <string.h>
#include <time.h>

#include "ch.h"
#include "hal.h"

#include "shell.h"
#include "chprintf.h"
#include "chrtclib.h"

#include "ff.h"

/* FS object.*/
static FATFS SDC_FS;

/* FS mounted and ready.*/
static bool_t fs_ready = FALSE;

/**
 *
 */
bool_t sdc_lld_is_write_protected(SDCDriver *sdcp) {
  (void)sdcp;
  return FALSE;
}

/**
 *
 */
bool_t sdc_lld_is_card_inserted(SDCDriver *sdcp) {
  (void)sdcp;
  return !palReadPad(GPIOE, GPIOE_SDIO_DETECT);
}

/**
 *
 */
void cmd_sdiotest(BaseSequentialStream *chp, int argc, char *argv[]){
  (void)argc;
  (void)argv;
  FRESULT err;
  uint32_t clusters;
  FATFS *fsp;
  FIL FileObject;
  //FILINFO FileInfo;
  size_t bytes_written;
  struct tm timp;

#if !HAL_USE_RTC
  chprintf(chp, "ERROR! Chibios compiled without RTC support.");
  chprintf(chp, "Enable HAL_USE_RCT in you halconf.h");
  chThdSleepMilliseconds(100);
  return;
#endif

  chprintf(chp, "Trying to connect SDIO... ");
  chThdSleepMilliseconds(100);

  if (!sdcConnect(&SDCD1)) {
    chprintf(chp, "OK\r\n");
    chprintf(chp, "Register working area for filesystem... ");
    chThdSleepMilliseconds(100);
    err = f_mount(0, &SDC_FS);
    if (err != FR_OK){
      chSysHalt();
    }
    else{
      fs_ready = TRUE;
      chprintf(chp, "OK\r\n");
    }

    chprintf(chp, "Mounting filesystem... ");
    chThdSleepMilliseconds(100);
    err = f_getfree("/", &clusters, &fsp);
    if (err != FR_OK) {
      chSysHalt();
    }
    chprintf(chp, "OK\r\n");
    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);

    rtcGetTimeTm(&RTCD1, &timp);
    chprintf(chp, "Current RTC time is: ");
    chprintf(chp, "%u-%u-%u %u:%u:%u\r\n",
      timp.tm_year+1900, timp.tm_mon+1, timp.tm_mday, timp.tm_hour, timp.tm_min,
      timp.tm_sec);

    chprintf(chp, "Creating empty file 'tmstmp.tst'... ");
    chThdSleepMilliseconds(100);
    err = f_open(&FileObject, "0:tmstmp.tst", FA_WRITE | FA_OPEN_ALWAYS);
    if (err != FR_OK) {
      chSysHalt();
    }
    chprintf(chp, "OK\r\n");

    chprintf(chp, "Write some data in it... ");
    chThdSleepMilliseconds(100);
    err = f_write(&FileObject, "tst", sizeof("tst"), (void *)&bytes_written);
    if (err != FR_OK) {
      chSysHalt();
    }
    else
      chprintf(chp, "OK\r\n");

    chprintf(chp, "Closing file 'tmstmp.tst'... ");
    chThdSleepMilliseconds(100);
    err = f_close(&FileObject);
    if (err != FR_OK) {
      chSysHalt();
    }
    else
      chprintf(chp, "OK\r\n");

//    chprintf(chp, "Obtaining file info ... ");
//    chThdSleepMilliseconds(100);
//    err = f_stat("0:tmstmp.tst", &FileInfo);
//    if (err != FR_OK) {
//      chSysHalt();
//    }
//    else{
//      chprintf(chp, "OK\r\n");
//      chprintf(chp, "    Timestamp: %u-%u-%u %u:%u:%u\r\n",
//                         ((FileInfo.fdate >> 9) & 127) + 1980,
//                         (FileInfo.fdate >> 5) & 15,
//                         FileInfo.fdate & 31,
//                         (FileInfo.ftime >> 11) & 31,
//                         (FileInfo.ftime >> 5) & 63,
//                         (FileInfo.ftime & 31) * 2);
//    }

    chprintf(chp, "Umounting filesystem... ");
    f_mount(0, NULL);
    chprintf(chp, "OK\r\n");

    chprintf(chp, "Disconnecting from SDIO...");
    chThdSleepMilliseconds(100);
    if (sdcDisconnect(&SDCD1))
      chSysHalt();
    chprintf(chp, " OK\r\n");
    chprintf(chp, "------------------------------------------------------\r\n");
    chprintf(chp, "Now you can remove memory card and check timestamp on PC.\r\n");
    chThdSleepMilliseconds(100);
  }
  else{
    chSysHalt();
  }
}

/*
 * SDIO configuration.
 */
static const SDCConfig sdccfg = {
  0
};

/**
 *
 */
static SerialConfig ser_cfg = {
    115200,
    0,
    0,
    0,
};
static const ShellCommand commands[] = {
  {"sdiotest", cmd_sdiotest},
  {NULL, NULL}
};
static const ShellConfig shell_cfg1 = {
  (BaseSequentialStream *)&SD2,
  commands
};

/*
 * Application entry point.
 */
int main(void) {
  halInit();
  chSysInit();

  /* start debugging serial link */
  sdStart(&SD2, &ser_cfg);
  shellInit();
  static WORKING_AREA(waShell, 4096);
  shellCreateStatic(&shell_cfg1, waShell, sizeof(waShell), NORMALPRIO);

  /*
   * Initializes the SDIO drivers.
   */
  sdcStart(&SDCD1, &sdccfg);

  /*
   * Normal main() thread activity.
   * Blinking signaling about successful passing.
   */
  while (TRUE) {
    palTogglePad(GPIOB, GPIOB_LED_R);
    chThdSleepMilliseconds(100);
  }
}