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https://github.com/RIOT-OS/RIOT.git
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97b91b4f8f
This fixes a race in `LED<NUM>_TOGGLE`, which is a read-copy-write
operation. Any access to a GPIO pin on the same GPIO port that
happens concurrently could result in data corruption. Using the
GPIO LL API, which is thread-safe, fixes the issue.
Note: The used GPIO LL functions will work even in when the GPIO LL
module is not used.
74 lines
1.5 KiB
C
74 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_stm32f4discovery
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* @{
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*
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* @file
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* @brief Board specific definitions for the STM32F4Discovery evaluation board
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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* @author Sebastian Meiling <s@mlng.net>
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*/
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#ifndef BOARD_H
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#define BOARD_H
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#include "cpu.h"
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#include "periph_conf.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @name xtimer configuration
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* @{
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*/
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#define XTIMER_BACKOFF (10)
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/** @} */
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/**
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* @name Macros for controlling the on-board LEDs.
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* @{
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*/
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#define LED0_PIN_NUM 13
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#define LED0_PORT GPIO_PORT_D /**< GPIO port of LED 0 */
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#define LED0_PORT_NUM PORT_D
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#define LED1_PIN_NUM 12
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#define LED1_PORT GPIO_PORT_D /**< GPIO port of LED 1 */
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#define LED1_PORT_NUM PORT_D
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#define LED2_PIN_NUM 14
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#define LED2_PORT GPIO_PORT_D /**< GPIO port of LED 2 */
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#define LED2_PORT_NUM PORT_D
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#define LED3_PIN_NUM 15
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#define LED3_PORT GPIO_PORT_D /**< GPIO port of LED 3 */
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#define LED3_PORT_NUM PORT_D
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/** @} */
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/**
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* @name User button
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* @{
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*/
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#define BTN0_PIN GPIO_PIN(PORT_A, 0)
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#define BTN0_MODE GPIO_IN
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#include "stm32_leds.h"
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#endif /* BOARD_H */
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/** @} */
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