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59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* Copyright (C) 2015 Hamburg University of Applied Sciences
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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 boards_limifrog-v1
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* @{
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*
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* @file
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* @brief Board specific implementations for the limifrog-v1 board
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*
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* @author Katja Kirstein <katja.kirstein@haw-hamburg.de>
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*
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* @}
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*/
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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 the boards LEDs */
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leds_init();
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/* initialize the CPU */
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cpu_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 LED initialization is hard-coded in this function.
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* As the LED is soldered onto the board it is fixed to
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* its CPU pins.
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*
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* The red LED is connected to pin PC3
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*/
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static void leds_init(void)
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{
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/* enable clock for port GPIOC */
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RCC->AHBENR |= RCC_AHBENR_GPIOCEN;
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/* set output speed to 50MHz */
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LED_RED_PORT->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR3;
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/* set output type to push-pull */
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LED_RED_PORT->OTYPER &= ~(GPIO_OTYPER_OT_3);
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/* configure pin as general output */
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LED_RED_PORT->MODER &= ~(GPIO_MODER_MODER3);
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LED_RED_PORT->MODER |= GPIO_MODER_MODER3_0;
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/* disable pull resistors */
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LED_RED_PORT->PUPDR &= ~(GPIO_PUPDR_PUPDR3);
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/* turn all LEDs off */
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LED_RED_PORT->BRR = (1 << 3);
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}
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