118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/****************************************************************************
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* config/nucleo-l452re/src/stm32_bringup.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/mount.h>
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#include <sys/types.h>
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#include <debug.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "stm32l4_i2c.h"
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#include "nucleo-l452re.h"
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/****************************************************************************
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* Pre-processor Defintiionis
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****************************************************************************/
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#undef HAVE_I2C_DRIVER
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#if defined(CONFIG_STM32L4_I2C1) && defined(CONFIG_I2C_DRIVER)
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# define HAVE_I2C_DRIVER 1
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_bringup
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*
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* Description:
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* Perform architecture-specific initialization
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*
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* CONFIG_BOARD_INITIALIZE=y :
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* Called from board_initialize().
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*
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* CONFIG_BOARD_INITIALIZE=n && CONFIG_LIB_BOARDCTL=y :
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* Called from the NSH library
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*
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****************************************************************************/
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int stm32_bringup(void)
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{
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#ifdef HAVE_I2C_DRIVER
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FAR struct i2c_master_s *i2c;
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#endif
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int ret;
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#ifdef CONFIG_FS_PROCFS
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/* Mount the procfs file system */
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ret = mount(NULL, "/proc", "procfs", 0, NULL);
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if (ret < 0)
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{
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ferr("ERROR: Failed to mount procfs at /proc: %d\n", ret);
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}
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#endif
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#ifdef HAVE_I2C_DRIVER
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/* Get the I2C lower half instance */
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i2c = stm32l4_i2cbus_initialize(1);
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if (i2c == NULL)
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{
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i2cerr("ERROR: Initialize I2C1: %d\n", ret);
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}
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else
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{
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/* Register the I2C character driver */
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ret = i2c_register(i2c, 1);
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if (ret < 0)
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{
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i2cerr("ERROR: Failed to register I2C1 device: %d\n", ret);
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}
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}
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#endif
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UNUSED(ret);
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return OK;
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}
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