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Merge pull request #15725 from seeseemelk/bugfix/stm32-uart-fw

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stm32/periph/uart: set flow control bits before enabling uart
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benpicco 2021-01-12 08:38:45 +01:00 committed by GitHub
commit fee3a8540f
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1 changed files with 9 additions and 9 deletions
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18
cpu/stm32/periph/uart.c
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@ -215,6 +215,15 @@ int uart_init(uart_t uart, uint32_t baudrate, uart_rx_cb_t rx_cb, void *arg)
* sent. */
uart_init_pins(uart, rx_cb);
#ifdef MODULE_PERIPH_UART_HW_FC
if (uart_config[uart].cts_pin != GPIO_UNDEF) {
dev(uart)->CR3 |= USART_CR3_CTSE;
}
if (uart_config[uart].rts_pin != GPIO_UNDEF) {
dev(uart)->CR3 |= USART_CR3_RTSE;
}
#endif
/* enable RX interrupt if applicable */
if (rx_cb) {
NVIC_EnableIRQ(uart_config[uart].irqn);
@ -228,15 +237,6 @@ int uart_init(uart_t uart, uint32_t baudrate, uart_rx_cb_t rx_cb, void *arg)
NVIC_EnableIRQ(uart_config[uart].irqn);
#endif
#ifdef MODULE_PERIPH_UART_HW_FC
if (uart_config[uart].cts_pin != GPIO_UNDEF) {
dev(uart)->CR3 |= USART_CR3_CTSE;
}
if (uart_config[uart].rts_pin != GPIO_UNDEF) {
dev(uart)->CR3 |= USART_CR3_RTSE;
}
#endif
return UART_OK;
}