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‎examples/bluefruitspi_neocolorpicker.py

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# NeoPixel Color Picker demo - wire up some NeoPixels and set their color
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# using Adafruit Bluefruit Connect App on your phone
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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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import neopixel
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ADVERT_NAME = b'BlinkaNeoLamp'
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# 16 neopixels on a digital pin, adjust as necessary!
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pixels = neopixel.NeoPixel(board.D5, 16)
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pixels.fill(0)
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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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def init_bluefruit():
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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='+ADVERT_NAME)
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def wait_for_connection():
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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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# This code will check the connection but only query the module if it has been
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# at least 'n_sec' seconds. Otherwise it 'caches' the response, to keep from
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# hogging the Bluefruit connection with constant queries
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connect_check_timestamp = None
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is_connected = None
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def check_connection(n_sec):
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if (not connect_check_timestamp) or (time.monotonic() - connection_timestamp > n_sec):
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connection_timestamp = time.monotonic()
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is_connected = bluefruit.connected
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return is_connected
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# Unlike most circuitpython code, this runs in two loops
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# one outer loop manages reconnecting bluetooth if we lose connection
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# then one inner loop for doing what we want when connected!
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while True:
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# Initialize the module
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try: # Wireless connections can have corrupt data or other runtime failures
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# This try block will reset the module if that happens
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init_bluefruit()
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wait_for_connection()
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print("\n *Connected!*")
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# Once connected, check for incoming BLE UART data
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while check_connection(3): # Check our connection status every 3 seconds
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# OK we're still connected, see if we have any data waiting
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resp = bluefruit.read_packet()
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if not resp:
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continue # nothin'
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print("Read packet", resp)
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# Look for a 'C'olor packet
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if resp[0] != 'C':
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continue
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# Set the neopixels to the three bytes in the packet
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pixels.fill(resp[1:4])
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print("Connection lost.")
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except RuntimeError as e:
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print(e) # Print what happened
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continue # retry!

‎examples/bluefruitspi_ruggedechotest.py

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# A more 'rugged' 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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# we wrap the loop in a try/except block and have multiple loops
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# and functions to keep our connection up and running no matter what
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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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ADVERT_NAME = b'BlinkaBLE'
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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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def init_bluefruit():
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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='+ADVERT_NAME)
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def wait_for_connection():
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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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# This code will check the connection but only query the module if it has been
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# at least 'n_sec' seconds. Otherwise it 'caches' the response, to keep from
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# hogging the Bluefruit connection with constant queries
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connect_check_timestamp = None
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is_connected = None
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def check_connection(n_sec):
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if (not connect_check_timestamp) or (time.monotonic() - connection_timestamp > n_sec):
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connection_timestamp = time.monotonic()
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is_connected = bluefruit.connected
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return is_connected
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# Unlike most circuitpython code, this runs in two loops
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# one outer loop manages reconnecting bluetooth if we lose connection
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# then one inner loop for doing what we want when connected!
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while True:
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# Initialize the module
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try: # Wireless connections can have corrupt data or other runtime failures
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# This try block will reset the module if that happens
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init_bluefruit()
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wait_for_connection()
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print("\n *Connected!*")
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# Once connected, check for incoming BLE UART data
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while check_connection(3): # Check our connection status every 3 seconds
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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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except RuntimeError as e:
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print(e) # Print what happened
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continue # retry!

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