diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/stm32/Kconfig | 10 | ||||
| -rw-r--r-- | src/stm32/stm32f1.c | 9 |
2 files changed, 17 insertions, 2 deletions
diff --git a/src/stm32/Kconfig b/src/stm32/Kconfig index 7a1a6d18..dfaa96eb 100644 --- a/src/stm32/Kconfig +++ b/src/stm32/Kconfig @@ -155,6 +155,16 @@ config STACK_SIZE int default 512 +config STM32F103GD_DISABLE_SWD + bool "Disable SWD at startup (for GigaDevice stm32f103 clones)" + depends on MACH_STM32F103 && LOW_LEVEL_OPTIONS + default n + help + The GigaDevice clone of the STM32F103 may not be able to + reliably disable SWD at run-time. This can prevent the PA13 + and PA14 pins from being available. Selecting this option + disables SWD at startup and thus makes these pins available. + ###################################################################### # Bootloader diff --git a/src/stm32/stm32f1.c b/src/stm32/stm32f1.c index 88500165..77faad72 100644 --- a/src/stm32/stm32f1.c +++ b/src/stm32/stm32f1.c @@ -257,8 +257,13 @@ armcm_main(void) // Disable JTAG to free PA15, PB3, PB4 enable_pclock(AFIO_BASE); - stm32f1_alternative_remap(AFIO_MAPR_SWJ_CFG_Msk, - AFIO_MAPR_SWJ_CFG_JTAGDISABLE); + if (CONFIG_STM32F103GD_DISABLE_SWD) + // GigaDevice clone can't enable PA13/PA14 at runtime - enable here + stm32f1_alternative_remap(AFIO_MAPR_SWJ_CFG_Msk, + AFIO_MAPR_SWJ_CFG_DISABLE); + else + stm32f1_alternative_remap(AFIO_MAPR_SWJ_CFG_Msk, + AFIO_MAPR_SWJ_CFG_JTAGDISABLE); sched_main(); } |