diff options
| author | Damien George <damien@micropython.org> | 2022-02-03 13:20:22 +1100 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2022-02-03 13:20:22 +1100 |
| commit | b8d55d4c52145e3ef2abf692a01a3ffce3ee78d0 (patch) | |
| tree | 93fff756f4701db24b8ec7600bf488c1bac37c7c | |
| parent | fbd47fc46cce80abfc59e680600666473a1868da (diff) | |
stm32/mboot: Allow HSI to be used as the main clock source.
Signed-off-by: Damien George <damien@micropython.org>
| -rw-r--r-- | ports/stm32/mboot/main.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/ports/stm32/mboot/main.c b/ports/stm32/mboot/main.c index ae409168b..d62224b1a 100644 --- a/ports/stm32/mboot/main.c +++ b/ports/stm32/mboot/main.c @@ -80,7 +80,7 @@ #undef MICROPY_HW_CLK_PLLP #undef MICROPY_HW_CLK_PLLQ #undef MICROPY_HW_CLK_PLLR -#define MICROPY_HW_CLK_PLLM (HSE_VALUE / 1000000) +#define MICROPY_HW_CLK_PLLM (MICROPY_HW_CLK_VALUE / 1000000) #define MICROPY_HW_CLK_PLLN (192) #define MICROPY_HW_CLK_PLLP (MICROPY_HW_CLK_PLLN / (CORE_PLL_FREQ / 1000000)) #define MICROPY_HW_CLK_PLLQ (4) @@ -184,10 +184,12 @@ void SystemClock_Config(void) { // Reduce power consumption __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); + #if !MICROPY_HW_CLK_USE_HSI // Turn HSE on __HAL_RCC_HSE_CONFIG(RCC_HSE_ON); while (__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET) { } + #endif // Disable PLL __HAL_RCC_PLL_DISABLE(); @@ -196,7 +198,11 @@ void SystemClock_Config(void) { // Configure PLL factors and source RCC->PLLCFGR = + #if MICROPY_HW_CLK_USE_HSI + 0 << RCC_PLLCFGR_PLLSRC_Pos // HSI selected as PLL source + #else 1 << RCC_PLLCFGR_PLLSRC_Pos // HSE selected as PLL source + #endif | MICROPY_HW_CLK_PLLM << RCC_PLLCFGR_PLLM_Pos | MICROPY_HW_CLK_PLLN << RCC_PLLCFGR_PLLN_Pos | ((MICROPY_HW_CLK_PLLP >> 1) - 1) << RCC_PLLCFGR_PLLP_Pos |