boards/arm/stm32f0l0g0/nucleo-f072rb/src/stm32_bringup.c

/****************************************************************************
 * boards/arm/stm32f0l0g0/nucleo-f072rb/src/stm32_bringup.c
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you 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.
 *
 ****************************************************************************/

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

#include <nuttx/config.h>

#include <sys/types.h>
#include <debug.h>

#include <nuttx/fs/fs.h>
#include <nuttx/i2c/i2c_master.h>

#include "stm32_i2c.h"
#include "nucleo-f072rb.h"

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

#undef HAVE_I2C_DRIVER
#if defined(CONFIG_STM32F0L0G0_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_BOARDCTL=y :
 *     Called from the NSH library
 *
 ****************************************************************************/

int stm32_bringup(void)
{
#ifdef HAVE_I2C_DRIVER
  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 HAVE_I2C_DRIVER
  /* Get the I2C lower half instance */

  i2c = stm32_i2cbus_initialize(1);
  if (i2c == NULL)
    {
      i2cerr("ERROR: Inialize 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

  UNUSED(ret);
  return OK;
}