Fix boot for CKS32F407 when -Os is used

2024-05-12 12:23:09 +02:00 · 2024-05-12 12:23:09 +02:00 · 9c6293759a
parent 1c51bf0136
commit 9c6293759a
1 changed files with 2 additions and 0 deletions
--- a/platform/mcu/CMSIS/Device/ST/STM32F4xx/Source/system_stm32f4xx.c
+++ b/platform/mcu/CMSIS/Device/ST/STM32F4xx/Source/system_stm32f4xx.c
@ -312,6 +312,8 @@ static void SetSysClock(void)
  {
    /* Select regulator voltage output Scale 1 mode, System frequency up to 168 MHz */
    RCC->APB1ENR |= RCC_APB1ENR_PWREN;
+    __DSB();
+
    PWR->CR |= PWR_CR_VOS;

    /* HCLK = SYSCLK / 1 */