nuttx/configs/stm32f4discovery/src/stm32_bringup.c

/****************************************************************************
 * config/stm32f4discovery/src/stm32_bringup.c
 *
 *   Copyright (C) 2012, 2014-2015 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdbool.h>
#include <stdio.h>
#include <debug.h>
#include <errno.h>

#ifdef CONFIG_SYSTEM_USBMONITOR
#  include <apps/usbmonitor.h>
#endif

#include "stm32.h"

#ifdef CONFIG_STM32_OTGFS
#  include "stm32_usbhost.h"
#endif

#include "stm32f4discovery.h"

/* Conditional logic in stm32f4discover.h will determine if certain features
 * are supported.  Tests for these features need to be made after including
 * stm32f4discovery.h.
 */

#ifdef HAVE_RTC_DRIVER
#  include <nuttx/timers/rtc.h>
#  include "stm32_rtc.h"
#endif

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: stm32_bringup
 *
 * Description:
 *   Perform architecture-specific initialization
 *
 *   CONFIG_BOARD_INITIALIZE=y :
 *     Called from board_initialize().
 *
 *   CONFIG_BOARD_INITIALIZE=n && CONFIG_NSH_ARCHINIT=y :
 *     Called from the NSH library
 *
 ****************************************************************************/

int stm32_bringup(void)
{
#ifdef HAVE_RTC_DRIVER
  FAR struct rtc_lowerhalf_s *lower;
#endif
  int ret = OK;

#ifdef HAVE_SDIO
  /* Initialize the SDIO block driver */

  ret = stm32_sdio_initialize();
  if (ret != OK)
    {
      fdbg("ERROR: Failed to initialize MMC/SD driver: %d\n", ret);
      return ret;
    }
#endif

#ifdef HAVE_USBHOST
  /* Initialize USB host operation.  stm32_usbhost_initialize() starts a thread
   * will monitor for USB connection and disconnection events.
   */

  ret = stm32_usbhost_initialize();
  if (ret != OK)
    {
      udbg("ERROR: Failed to initialize USB host: %d\n", ret);
      return ret;
    }
#endif

#ifdef HAVE_USBMONITOR
  /* Start the USB Monitor */

  ret = usbmonitor_start(0, NULL);
  if (ret != OK)
    {
      udbg("ERROR: Failed to start USB monitor: %d\n", ret);
      return ret;
    }
#endif

#ifdef HAVE_RTC_DRIVER
  /* Instantiate the STM32 lower-half RTC driver */

  lower = stm32_rtc_lowerhalf();
  if (!lower)
    {
      sdbg("ERROR: Failed to instantiate the RTC lower-half driver\n");
      return -ENOMEM;
    }
  else
    {
      /* Bind the lower half driver and register the combined RTC driver
       * as /dev/rtc0
       */

      ret = rtc_initialize(0, lower);
      if (ret < 0)
        {
          sdbg("ERROR: Failed to bind/register the RTC driver: %d\n", ret);
          return ret;
        }
    }
#endif

  return ret;
}