"""
ESP32-C6 UART TX + LED test. Sends a few commands on GPIO17, blinks LED on GPIO15.
Run on device: exec(open('test/test_uart_tx').read()) or import test.test_uart_tx
Does not require Pico connected.
"""
import machine
import time

UART_TX_PIN = 17
LED_PIN = 15

def main():
    uart = machine.UART(1, baudrate=115200, tx=UART_TX_PIN)
    led = machine.Pin(LED_PIN, machine.Pin.OUT)

    def send(cmd):
        uart.write(cmd + "\n")
        print("TX:", cmd)

    # Blink and send a short command sequence
    commands = ["off", "fill 255 0 0", "fill 0 255 0", "fill 0 0 255", "off"]
    for i, cmd in enumerate(commands):
        led.value(1)
        send(cmd)
        time.sleep(0.3)
        led.value(0)
        time.sleep(0.2)

    print("Done. Connect Pico to see strip follow commands.")

if __name__ == "__main__":
    main()