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| author | Rocco Marco Guglielmi <roccomarco.guglielmi@live.com> | 2016-07-06 14:05:57 +0000 |
|---|---|---|
| committer | Rocco Marco Guglielmi <roccomarco.guglielmi@live.com> | 2016-07-06 14:05:57 +0000 |
| commit | 53055a4b73bdad4f7c0e8b0bfbe34fdffc70361e (patch) | |
| tree | cef1f6fe36408e0b4ad1e57a2cea168c17fc9330 /os/hal | |
| parent | 0ab5ee926b5cc9b162278bd1863c81cfe07cc7dc (diff) | |
| download | ChibiOS-53055a4b73bdad4f7c0e8b0bfbe34fdffc70361e.tar.gz ChibiOS-53055a4b73bdad4f7c0e8b0bfbe34fdffc70361e.tar.bz2 ChibiOS-53055a4b73bdad4f7c0e8b0bfbe34fdffc70361e.zip | |
Fixed Bug #763.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@9684 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal')
| -rw-r--r-- | os/hal/ports/STM32/STM32L4xx/hal_lld.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/os/hal/ports/STM32/STM32L4xx/hal_lld.c b/os/hal/ports/STM32/STM32L4xx/hal_lld.c index 4eea068c9..c4916b8af 100644 --- a/os/hal/ports/STM32/STM32L4xx/hal_lld.c +++ b/os/hal/ports/STM32/STM32L4xx/hal_lld.c @@ -48,7 +48,7 @@ uint32_t SystemCoreClock = STM32_HCLK; /**
* @brief Initializes the backup domain.
- * @note WARNING! Changing clock source impossible without resetting
+ * @note WARNING! Changing RTC clock source impossible without resetting
* of the whole BKP domain.
*/
static void hal_lld_backup_domain_init(void) {
@@ -60,6 +60,27 @@ static void hal_lld_backup_domain_init(void) { RCC->BDCR = 0;
}
+#if STM32_LSE_ENABLED
+ /* LSE activation.*/
+#if defined(STM32_LSE_BYPASS)
+ /* LSE Bypass.*/
+ RCC->BDCR |= STM32_LSEDRV | RCC_BDCR_LSEON | RCC_BDCR_LSEBYP;
+#else
+ /* No LSE Bypass.*/
+ RCC->BDCR |= STM32_LSEDRV | RCC_BDCR_LSEON;
+#endif
+ while ((RCC->BDCR & RCC_BDCR_LSERDY) == 0)
+ ; /* Wait until LSE is stable. */
+#endif
+
+#if STM32_MSIPLL_ENABLED
+ /* MSI PLL activation depends on LSE. Reactivating and checking for
+ MSI stability.*/
+ RCC->CR |= RCC_CR_MSIPLLEN;
+ while ((RCC->CR & RCC_CR_MSIRDY) == 0)
+ ; /* Wait until MSI is stable. */
+#endif
+
#if HAL_USE_RTC
/* If the backup domain hasn't been initialized yet then proceed with
initialization.*/
|