# CircuitPython Demo - USB/Serial echo import digitalio import board import busio led = digitalio.DigitalInOut(board.D13) led.direction = digitalio.Direction.OUTPUT uart = busio.UART(board.TX, board.RX, baudrate=9600) while True: data = uart.read(32) # read up to 32 bytes # print(data) # this is a bytearray type if data is not None: led.value = True data_string = ''.join([chr(b) for b in data]) # convert bytearray to string print(data_string, end="") led.value = False