diff options
Diffstat (limited to 'chip/stm32/uart.c')
| -rw-r--r-- | chip/stm32/uart.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/chip/stm32/uart.c b/chip/stm32/uart.c index 3544b95efe..33ef1064f0 100644 --- a/chip/stm32/uart.c +++ b/chip/stm32/uart.c @@ -279,6 +279,12 @@ void uart_init(void) STM32_RCC_APB1ENR |= CONCAT2(STM32_RCC_PB1_USART, UARTN); #endif + /* + * For STM32F3, A delay of 1 APB clock cycles is needed before we + * can access any USART register. Fortunately, we have + * gpio_config_module() below and thus don't need to add the delay. + */ + /* Configure GPIOs */ gpio_config_module(MODULE_UART, 1); |