diff options
Diffstat (limited to 'chip/stm32/system.c')
| -rw-r--r-- | chip/stm32/system.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/chip/stm32/system.c b/chip/stm32/system.c index c7ff4f23d9..5f6124657e 100644 --- a/chip/stm32/system.c +++ b/chip/stm32/system.c @@ -285,24 +285,24 @@ void system_pre_init(void) STM32_RCC_AHB1ENR |= STM32_RCC_AHB1ENR_BKPSRAMEN; #elif defined(CHIP_FAMILY_STM32H7) /* enable backup registers */ - STM32_RCC_AHB4ENR |= 1 << 28; + STM32_RCC_AHB4ENR |= BIT(28); #else /* enable backup registers */ - STM32_RCC_APB1ENR |= 1 << 27; + STM32_RCC_APB1ENR |= BIT(27); #endif /* Delay 1 APB clock cycle after the clock is enabled */ clock_wait_bus_cycles(BUS_APB, 1); /* Enable access to RCC CSR register and RTC backup registers */ - STM32_PWR_CR |= 1 << 8; + STM32_PWR_CR |= BIT(8); #ifdef CHIP_VARIANT_STM32L476 /* Enable Vddio2 */ - STM32_PWR_CR2 |= 1 << 9; + STM32_PWR_CR2 |= BIT(9); #endif /* switch on LSI */ - STM32_RCC_CSR |= 1 << 0; + STM32_RCC_CSR |= BIT(0); /* Wait for LSI to be ready */ - while (!(STM32_RCC_CSR & (1 << 1))) + while (!(STM32_RCC_CSR & BIT(1))) ; /* re-configure RTC if needed */ #ifdef CHIP_FAMILY_STM32L |