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
..
dist	boards/blxxxpill: add support for stm32duino bootloader and for generic St-Link V2.	2020-05-04 19:36:15 -07:00
doc	boards/common/blxxxpill: Update pinout	2023-02-28 08:35:17 +01:00
include	cpu/stm32/f1: prevent corrupting AFIO->MAPR	2023-11-20 20:28:52 +01:00
doc.txt	boards/{bluepill*,blackpill*}: rename and improve doc	2023-01-02 16:23:10 +01:00
Kconfig	boards/{bluepill*,blackpill*}: rename and improve doc	2023-01-02 16:23:10 +01:00
Makefile	boards: Split off 128KiB version of bl*pill	2019-09-29 16:42:44 +02:00
Makefile.dep	boards: Split off 128KiB version of bl*pill	2019-09-29 16:42:44 +02:00
Makefile.features	boards/common/blxxxpill: enable riotboot feature	2022-11-30 19:28:14 +01:00
Makefile.include	boards: make DFU_USB_ID and DFU_USE_DFUSE overridable	2022-11-30 19:28:14 +01:00