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986488db85
The `SWJ_CFG` field of the `AFIO_MAPR` register is write only and values read are undefined (random). Hence, using `AFIO->MAPR |= mask;` to enable flags can corrupt the state of the `SWJ_CFG` (configure it to an unintended value). Two helper functions have been introduced: - `afio_mapr_read()` reads the value, but sanitizes the `SWJ_CFG` field to zero - `afio_mapr_write()` writes the given value, but applies the `SWJ_CFG` configured by the board before writing. Finally, the `nucleo-f103rb` and `bluepill*`/`blackpill*` boards have been updated to no longer specify `STM32F1_DISABLE_JTAG`, as this is handled by the `SWJ_CFG` setting (which defaults to disabling JTAG).
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/*
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* Copyright (C) 2015 TriaGnoSys GmbH
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* 2017 Alexander Kurth, Sören Tempel, Tristan Bruns
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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_common_blxxxpill
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*
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* @{
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*
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* @file
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* @brief Peripheral MCU configuration for the bluepill/blackpill board
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*
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* @author Víctor Ariño <victor.arino@triagnosys.com>
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* @author Sören Tempel <tempel@uni-bremen.de>
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* @author Tristan Bruns <tbruns@uni-bremen.de>
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* @author Alexander Kurth <kurth1@uni-bremen.de>
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*/
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#ifndef BOARD_COMMON_H
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#define BOARD_COMMON_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 Macros for controlling the on-board LED.
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* @{
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*/
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#ifndef LED0_PORT_NUM
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#define LED0_PORT_NUM PORT_C /**< GPIO Port number the LED is connected to */
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#endif
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#ifndef LED0_PIN_NUM
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#define LED0_PIN_NUM (13) /**< Pin number the LED is connected to */
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#endif
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#ifndef LED0_IS_INVERTED
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#define LED0_IS_INVERTED 1
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#endif
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/** @} */
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/**
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* @brief Use the fist UART for STDIO on this board
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*/
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#define STDIO_UART_DEV UART_DEV(0)
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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_WIDTH (16)
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#define XTIMER_BACKOFF (19)
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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_COMMON_H */
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/** @} */
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