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59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* Copyright (C) 2015 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_nucleo-f334
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* @{
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*
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* @file
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* @brief Board specific implementations for the nucleo-f334 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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#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 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 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 green LED is connected to pin PA5
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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_GPIOAEN;
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/* set output speed to 50MHz */
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LED_GREEN_PORT->OSPEEDR |= 0x00000c00;
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/* set output type to push-pull */
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LED_GREEN_PORT->OTYPER &= ~(0x00000020);
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/* configure pins as general outputs */
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LED_GREEN_PORT->MODER &= ~(0x00000c00);
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LED_GREEN_PORT->MODER |= 0x00000400;
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/* disable pull resistors */
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LED_GREEN_PORT->PUPDR &= ~(0x00000c00);
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/* turn all LEDs off */
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LED_GREEN_PORT->BRR = 0x00c0;
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}
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