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68 lines
1.5 KiB
C
68 lines
1.5 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 boards_stm32f3discovery
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* @{
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*
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* @file
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* @brief Board specific implementations for the STM32F3Discovery evaluation board
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*
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* @}
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*/
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#include "board.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 (LD3 to LD10)
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*
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* The LED initialization is hard-coded in this function. As the LEDs are soldered
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* onto the board they are fixed to their CPU pins.
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*
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* The LEDs are connected to the following pins:
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* - LD3: PE9
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* - LD4: PE8
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* - LD5: PE10
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* - LD6: PE15
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* - LD7: PE11
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* - LD8: PE14
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* - LD9: PE12
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* - LD10: PE13
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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 GPIOE */
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RCC->AHBENR |= RCC_AHBENR_GPIOEEN;
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/* set output speed to 50MHz */
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LED_PORT->OSPEEDR |= 0xffff0000;
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/* set output type to push-pull */
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LED_PORT->OTYPER &= ~(0x0000ff00);
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/* configure pins as general outputs */
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LED_PORT->MODER &= ~(0xffff0000);
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LED_PORT->MODER |= 0x55550000;
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/* disable pull resistors */
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LED_PORT->PUPDR &= ~(0xffff0000);
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/* turn all LEDs off */
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LED_PORT->BRR = 0xff00;
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}
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