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Avoid generating garbage input due to initialization (#1125)

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First mapping the GPIO pins to the UART peripheral before enabling the UART peripheral avoids generation of garbage character on the UART's input.
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DipSwitch 2023-01-19 23:39:19 +01:00 committed by GitHub
parent 13a171a971
commit 35787255af
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 1 deletions
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src/rp2_common/pico_stdio_uart/stdio_uart.c
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@ -70,9 +70,9 @@ void stdin_uart_init() {
void stdio_uart_init_full(struct uart_inst *uart, uint baud_rate, int tx_pin, int rx_pin) { void stdio_uart_init_full(struct uart_inst *uart, uint baud_rate, int tx_pin, int rx_pin) {
uart_instance = uart; uart_instance = uart;
uart_init(uart_instance, baud_rate);
if (tx_pin >= 0) gpio_set_function((uint)tx_pin, GPIO_FUNC_UART); if (tx_pin >= 0) gpio_set_function((uint)tx_pin, GPIO_FUNC_UART);
if (rx_pin >= 0) gpio_set_function((uint)rx_pin, GPIO_FUNC_UART); if (rx_pin >= 0) gpio_set_function((uint)rx_pin, GPIO_FUNC_UART);
uart_init(uart_instance, baud_rate);
stdio_set_driver_enabled(&stdio_uart, true); stdio_set_driver_enabled(&stdio_uart, true);
} }