diff options
Diffstat (limited to 'chip/stm32/usart.c')
| -rw-r--r-- | chip/stm32/usart.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/chip/stm32/usart.c b/chip/stm32/usart.c index 264fa35a75..29cb0b705f 100644 --- a/chip/stm32/usart.c +++ b/chip/stm32/usart.c @@ -76,6 +76,12 @@ void usart_init(struct usart_config const *config) *(config->hw->clock_register) |= config->hw->clock_enable; /* + * 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. + */ + + /* * Switch all GPIOs assigned to the USART module over to their USART * alternate functions. */ |