nuttx/boards/arm/stm32l4/nucleo-l452re/src/stm32_bringup.c

/****************************************************************************
 * boards/arm/stm32l4/nucleo-l452re/src/stm32_bringup.c
 *
 *   Copyright (C) 2017-2018 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 <sys/types.h>
#include <debug.h>

#include <nuttx/input/buttons.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/leds/userled.h>
#include <nuttx/board.h>
#include <nuttx/fs/fs.h>

#include "stm32l4_i2c.h"
#include "nucleo-l452re.h"

#include <arch/board/board.h>

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

#undef HAVE_I2C_DRIVER
#if defined(CONFIG_STM32L4_I2C1) && defined(CONFIG_I2C_DRIVER)
#  define HAVE_I2C_DRIVER 1
#endif

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

/****************************************************************************
 * Name: stm32_bringup
 *
 * Description:
 *   Perform architecture-specific initialization
 *
 *   CONFIG_BOARD_LATE_INITIALIZE=y :
 *     Called from board_late_initialize().
 *
 *   CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_LIB_BOARDCTL=y :
 *     Called from the NSH library
 *
 ****************************************************************************/

int stm32_bringup(void)
{
#ifdef HAVE_I2C_DRIVER
  FAR struct i2c_master_s *i2c;
#endif
  int ret;

#ifdef CONFIG_FS_PROCFS
  /* Mount the procfs file system */

  ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
  if (ret < 0)
    {
      ferr("ERROR: Failed to mount procfs at /proc: %d\n", ret);
    }
#endif

#ifdef CONFIG_BUTTONS
#ifdef CONFIG_BUTTONS_LOWER
  iinfo("Initializing button driver\n");

  /* Register the BUTTON driver */

  ret = btn_lower_initialize("/dev/buttons");
  if (ret < 0)
    {
      ierr("ERROR: btn_lower_initialize() failed: %d\n", ret);
    }
#else
  /* Enable BUTTON support for some other purpose */

  board_button_initialize();
#endif
#endif /* CONFIG_BUTTONS */

#ifdef HAVE_I2C_DRIVER
  /* Get the I2C lower half instance */

  i2c = stm32l4_i2cbus_initialize(1);
  if (i2c == NULL)
    {
      i2cerr("ERROR: Initialize I2C1: %d\n", ret);
    }
  else
    {
      /* Register the I2C character driver */

      ret = i2c_register(i2c, 1);
      if (ret < 0)
        {
          i2cerr("ERROR: Failed to register I2C1 device: %d\n", ret);
        }
    }
#endif

#ifdef CONFIG_DAC
  ainfo("Initializing DAC\n");

  stm32l4_dac_setup();
#endif

#ifdef CONFIG_ADC
  ainfo("Initializing ADC\n");

  stm32l4_adc_setup();
#endif

  UNUSED(ret);
  return OK;
}