diff options
| -rw-r--r-- | ports/stm32/rfcore.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/ports/stm32/rfcore.c b/ports/stm32/rfcore.c index 05582e887..2d99a3410 100644 --- a/ports/stm32/rfcore.c +++ b/ports/stm32/rfcore.c @@ -539,8 +539,12 @@ void rfcore_init(void) { while (LL_HSEM_1StepLock(HSEM, CFG_HW_PWR_STANDBY_SEMID)) { } - // Select LSE as RF wakeup source + // Set the wakeup source to LSE or fall back to use HSE + #if MICROPY_HW_RTC_USE_LSE RCC->CSR = (RCC->CSR & ~RCC_CSR_RFWKPSEL) | 1 << RCC_CSR_RFWKPSEL_Pos; + #else + RCC->CSR = (RCC->CSR & ~RCC_CSR_RFWKPSEL) | 3 << RCC_CSR_RFWKPSEL_Pos; + #endif // Initialise IPCC and shared memory structures ipcc_init(IRQ_PRI_SDIO); |