diff options
| -rw-r--r-- | os/hal/ports/STM32/STM32F1xx/hal_lld.c | 6 | ||||
| -rw-r--r-- | os/hal/ports/STM32/STM32F1xx/hal_lld.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/STM32F1xx/hal_lld.c b/os/hal/ports/STM32/STM32F1xx/hal_lld.c index 950eb3b5a..3893d6e70 100644 --- a/os/hal/ports/STM32/STM32F1xx/hal_lld.c +++ b/os/hal/ports/STM32/STM32F1xx/hal_lld.c @@ -66,7 +66,13 @@ static void hal_lld_backup_domain_init(void) { /* If enabled then the LSE is started.*/
#if STM32_LSE_ENABLED
+#if defined(STM32_LSE_BYPASS)
+ /* LSE Bypass.*/
+ RCC->BDCR |= RCC_BDCR_LSEON | RCC_BDCR_LSEBYP;
+#else
+ /* No LSE Bypass.*/
RCC->BDCR |= RCC_BDCR_LSEON;
+#endif
while ((RCC->BDCR & RCC_BDCR_LSERDY) == 0)
; /* Waits until LSE is stable. */
#endif /* STM32_LSE_ENABLED */
diff --git a/os/hal/ports/STM32/STM32F1xx/hal_lld.h b/os/hal/ports/STM32/STM32F1xx/hal_lld.h index fff3c607b..32a63c875 100644 --- a/os/hal/ports/STM32/STM32F1xx/hal_lld.h +++ b/os/hal/ports/STM32/STM32F1xx/hal_lld.h @@ -20,6 +20,7 @@ * @pre This module requires the following macros to be defined in the
* @p board.h file:
* - STM32_LSECLK.
+ * - STM32_LSE_BYPASS (optionally).
* - STM32_HSECLK.
* - STM32_HSE_BYPASS (optionally).
* .
|