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66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License v2.1. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @ingroup board_iot-lab_M3
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* @{
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*
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* @file board.c
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* @brief Board specific implementations for the iot-lab_M3 board
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*
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* @author Thomas Eichinger <thomas.eichinger@fu-berlin.de
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*
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* @}
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*/
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#include "cmsis_system.h"
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#include "board.h"
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#include "cpu.h"
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static void leds_init(void);
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void board_init(void)
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{
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/* initialize core clocks via CMSIS function provided by ST */
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SystemInit();
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/* initialize the CPU */
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cpu_init();
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/* initialize the boards LEDs */
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leds_init();
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}
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/**
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* @brief Initialize the boards on-board LEDs
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*
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* The LEDs initialization is hard-coded in this function. As the LED is soldered
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* onto the board it is fixed to its CPU pins.
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*
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* The LEDs are connected to the following pin:
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* - Green: PB5
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* - Orange: PC10
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* - Red: PD2
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*/
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static void leds_init(void)
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{
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/* green pin */
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RCC->APB2ENR |= RCC_APB2ENR_IOPBEN;
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GPIOB->CRL = (0x3 << (5*4));
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/* orange pin */
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RCC->APB2ENR |= RCC_APB2ENR_IOPCEN;
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GPIOC->CRH = (0x3 << ((10-8)*4));
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/* red pin */
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RCC->APB2ENR |= RCC_APB2ENR_IOPDEN;
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GPIOD->CRL = (0x3 << (2*4));
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}
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