Kyle Burk 986488db85 cpu/stm32/f1: prevent corrupting AFIO->MAPR ... 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).		2023-11-20 20:28:52 +01:00
..
include	boards/stm32: replace GPIO_UNDEF with SPI_CS_UNDEF	2022-01-06 12:34:09 +01:00
doc.txt	boards/nucleo64: Add pinout diagrams from UM1724	2023-03-17 15:16:31 +01:00
Kconfig	boards/nucleo-*: put Kconfig HSE/LSE clock config in common	2021-01-20 09:16:46 +01:00
Makefile	boards/nucleo-f103rb: rename to marketing name	2018-05-22 21:52:41 +02:00
Makefile.dep	boards: drop LED init	2022-02-18 14:35:43 +01:00
Makefile.features	boards/stm32*: adapt for new stm32 cpu organization	2020-05-20 13:39:10 +02:00
Makefile.include	cpu/stm32/f1: prevent corrupting AFIO->MAPR	2023-11-20 20:28:52 +01:00