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cpu/esp32: GPIO init order for UART RX/TX changed

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The GPIO for RX has to be initialized as input before the GPIO for TX can be initialized as output. Otherwise it could lead to creash if RX GPIO was used as output before.
This commit is contained in:
Gunar Schorcht 2019-03-26 16:16:49 +01:00
parent b42106e738
commit c0f50104b9
1 changed files with 2 additions and 2 deletions
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4
cpu/esp32/periph/uart.c
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@ -125,8 +125,8 @@ int uart_init(uart_t uart, uint32_t baudrate, uart_rx_cb_t rx_cb, void *arg)
}
/* try to initialize the pins as GPIOs first */
if (gpio_init (_uarts[uart].pin_txd, GPIO_OUT) ||
gpio_init (_uarts[uart].pin_rxd, GPIO_IN)) {
if (gpio_init (_uarts[uart].pin_rxd, GPIO_IN) ||
gpio_init (_uarts[uart].pin_txd, GPIO_OUT)) {
return -1;
}