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