stm32/boards/STM32L476DISC: Enable external RTC xtal to get RTC working.

6 years ago · 67ee4e2401
1 changed files with 3 additions and 0 deletions
--- a/ports/stm32/boards/STM32L476DISC/mpconfigboard.h
+++ b/ports/stm32/boards/STM32L476DISC/mpconfigboard.h
@ -36,6 +36,9 @@ extern struct _spi_bdev_t spi_bdev;
 #define MICROPY_HW_CLK_PLLR (RCC_PLLR_DIV2)
 #define MICROPY_HW_CLK_PLLQ (RCC_PLLQ_DIV2)

+// The board has an external 32kHz crystal
+#define MICROPY_HW_RTC_USE_LSE      (1)
+
 #define MICROPY_HW_FLASH_LATENCY    FLASH_LATENCY_4

 // USART config