diff options
Diffstat (limited to 'chip/stm32/uart.c')
| -rw-r--r-- | chip/stm32/uart.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/chip/stm32/uart.c b/chip/stm32/uart.c index d18b4b781a..8fbb6a3436 100644 --- a/chip/stm32/uart.c +++ b/chip/stm32/uart.c @@ -268,8 +268,12 @@ void uart_init(void) STM32_RCC_CFGR3 |= 0x030000; /* USART2 clock source from HSI(8MHz) */ #endif /* UARTN */ #elif defined(CHIP_FAMILY_STM32L4) - STM32_RCC_CCIPR |= (0x2 << STM32_RCC_CCIPR_USART1SEL_SHIFT); - STM32_RCC_CCIPR |= (0x2 << STM32_RCC_CCIPR_LPUART1SEL_SHIFT); + STM32_RCC_CCIPR &= ~STM32_RCC_CCIPR_USART1SEL_MASK; + STM32_RCC_CCIPR |= (STM32_RCC_CCIPR_SYSCLK << + STM32_RCC_CCIPR_USART1SEL_SHIFT); + STM32_RCC_CCIPR &= ~STM32_RCC_CCIPR_LPUART1SEL_MASK; + STM32_RCC_CCIPR |= (STM32_RCC_CCIPR_SYSCLK << + STM32_RCC_CCIPR_LPUART1SEL_SHIFT); #endif /* CHIP_FAMILY_STM32F0 || CHIP_FAMILY_STM32F3 */ /* Enable USART clock */ |