// UART-to-USB CDC bridge for Pico
// UART0 RX on GPIO 1, 115200 baud → USB serial output
#include "pico/stdlib.h"
#include <stdio.h>

#define UART_ID uart0
#define UART_RX_PIN 1
#define BAUD 115200

int main() {
    stdio_init_all();
    uart_init(UART_ID, BAUD);
    gpio_set_function(UART_RX_PIN, GPIO_FUNC_UART);

    while (true) {
        if (uart_is_readable(UART_ID)) {
            char c = uart_getc(UART_ID);
            putchar(c);
        }
    }
}