diff options
| -rw-r--r-- | os/hal/platforms/STM32F4xx/hal_lld.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/os/hal/platforms/STM32F4xx/hal_lld.c b/os/hal/platforms/STM32F4xx/hal_lld.c index 6dcac805b..4d372b12f 100644 --- a/os/hal/platforms/STM32F4xx/hal_lld.c +++ b/os/hal/platforms/STM32F4xx/hal_lld.c @@ -154,8 +154,6 @@ void stm32_clock_init(void) { /* PWR initialization.*/
#if defined(STM32F4XX) || defined(__DOXYGEN__)
PWR->CR = STM32_VOS;
- while ((PWR->CSR & PWR_CSR_VOSRDY) == 0)
- ; /* Waits until power regulator is stable. */
#else
PWR->CR = 0;
#endif
@@ -192,6 +190,11 @@ void stm32_clock_init(void) { STM32_PLLM;
RCC->CR |= RCC_CR_PLLON;
+ /* Synchronization with voltage regulator stabilization.*/
+#if defined(STM32F4XX)
+ while ((PWR->CSR & PWR_CSR_VOSRDY) == 0)
+ ; /* Waits until power regulator is stable. */
+
#if STM32_OVERDRIVE_REQUIRED
/* Overdrive activation performed after activating the PLL in order to save
time as recommended in RM in "Entering Over-drive mode" paragraph.*/
@@ -201,7 +204,8 @@ void stm32_clock_init(void) { PWR->CR |= PWR_CR_ODSWEN;
while (!(PWR->CSR & PWR_CSR_ODSWRDY)
;
-#endif
+#endif /* STM32_OVERDRIVE_REQUIRED */
+#endif /* defined(STM32F4XX) */
/* Waiting for PLL lock.*/
while (!(RCC->CR & RCC_CR_PLLRDY))
|