61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
# A simple echo test for the Feather M0 Bluefruit
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# Sets the name, then echo's all RX'd data with a reversed packet
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import time
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import busio
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import board
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from digitalio import DigitalInOut
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from adafruit_bluefruitspi import BluefruitSPI
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spi_bus = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
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cs = DigitalInOut(board.D8)
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irq = DigitalInOut(board.D7)
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rst = DigitalInOut(board.D4)
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bluefruit = BluefruitSPI(spi_bus, cs, irq, rst, debug=False)
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# Initialize the device and perform a factory reset
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print("Initializing the Bluefruit LE SPI Friend module")
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bluefruit.init()
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bluefruit.command_check_OK(b"AT+FACTORYRESET", delay=1)
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# Print the response to 'ATI' (info request) as a string
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print(str(bluefruit.command_check_OK(b"ATI"), "utf-8"))
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# Change advertised name
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bluefruit.command_check_OK(b"AT+GAPDEVNAME=BlinkaBLE")
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while True:
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print("Waiting for a connection to Bluefruit LE Connect ...")
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# Wait for a connection ...
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dotcount = 0
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while not bluefruit.connected:
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print(".", end="")
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dotcount = (dotcount + 1) % 80
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if dotcount == 79:
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print("")
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time.sleep(0.5)
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# Once connected, check for incoming BLE UART data
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print("\n *Connected!*")
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connection_timestamp = time.monotonic()
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while True:
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# Check our connection status every 3 seconds
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if time.monotonic() - connection_timestamp > 3:
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connection_timestamp = time.monotonic()
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if not bluefruit.connected:
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break
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# OK we're still connected, see if we have any data waiting
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resp = bluefruit.uart_rx()
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if not resp:
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continue # nothin'
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print("Read %d bytes: %s" % (len(resp), resp))
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# Now write it!
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print("Writing reverse...")
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send = []
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for i in range(len(resp), 0, -1):
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send.append(resp[i - 1])
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print(bytes(send))
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bluefruit.uart_tx(bytes(send))
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print("Connection lost.")
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