import time
time.sleep(0.1) # Wait for USB to become ready

from machine import UART, Pin

time.sleep(0.2)
print("Starting UART loopback test")

uart = UART(1, baudrate=9600, tx=Pin(8), rx=Pin(9))

while uart.any():
    uart.read()

message = "Hello Wokwi\n"
uart.write(message)
print("Sent:", message.strip())

time.sleep(0.5)

if uart.any():
    received = uart.read().decode().strip()
    print("Received:", received)
else:
    print("No data received")