cpu/sam0_common: uart: wait for synchronisation done after powerup

Otherwise we lose settings if we write to it right after uart_poweron()
2021-11-11 14:32:42 +01:00 · 2021-11-11 14:32:42 +01:00 · 1ef458a701
commit 1ef458a701
parent 1772628483
1 changed files with 1 additions and 0 deletions
--- a/cpu/sam0_common/periph/uart.c
+++ b/cpu/sam0_common/periph/uart.c
@ -314,6 +314,7 @@ void uart_poweron(uart_t uart)
 {
    sercom_clk_en(dev(uart));
    dev(uart)->CTRLA.reg |= SERCOM_USART_CTRLA_ENABLE;
+    _syncbusy(dev(uart));
 }

 void uart_poweroff(uart_t uart)