diff options
Diffstat (limited to 'os/hal/platforms/STM32F4xx/hal_lld.c')
| -rw-r--r-- | os/hal/platforms/STM32F4xx/hal_lld.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/os/hal/platforms/STM32F4xx/hal_lld.c b/os/hal/platforms/STM32F4xx/hal_lld.c index fa87998c5..6d78c32df 100644 --- a/os/hal/platforms/STM32F4xx/hal_lld.c +++ b/os/hal/platforms/STM32F4xx/hal_lld.c @@ -94,6 +94,11 @@ void stm32_clock_init(void) { /* PWR clock enable.*/
RCC->APB1ENR = RCC_APB1ENR_PWREN;
+ /* PWR initialization.*/
+ PWR->CR = STM32_VOS;
+ while (PWR->CSR & PWR_CSR_VOSRDY)
+ ; /* Waits until power regulator is stable. */
+
/* Initial clocks setup and wait for HSI stabilization, the MSI clock is
always enabled because it is the fallback clock when PLL the fails.*/
RCC->CR |= RCC_CR_HSION;
|