38 lines
885 B
Python
38 lines
885 B
Python
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import board
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import busio
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import digitalio
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import usb_cdc
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import time
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while not usb_cdc.console.in_waiting:
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time.sleep(0.1)
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print("USART test")
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# For most CircuitPython boards:
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led = digitalio.DigitalInOut(board.LED)
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# For QT Py M0:
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# led = digitalio.DigitalInOut(board.SCK)
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led.direction = digitalio.Direction.OUTPUT
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uart = busio.UART(board.TX, board.RX, baudrate=9600)
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while True:
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data = uart.read(32) # read up to 32 bytes
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# print(data) # this is a bytearray type
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if data is not None:
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led.value = True
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# convert bytearray to string
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data_string = '*'.join([chr(b) for b in data])
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print(data_string, end="")
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led.value = False
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if usb_cdc.console.in_waiting:
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data = usb_cdc.console.read()
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data_string = '*'.join([chr(b) for b in data])
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print("writing "+data_string)
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uart.write(data)
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