81 lines
2.8 KiB
Python
81 lines
2.8 KiB
Python
from time import sleep
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from adafruit_ble.uart_client import UARTClient
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from adafruit_ble.scanner import Scanner
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from adafruit_bluefruit_connect.packet import Packet
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from adafruit_bluefruit_connect.button_packet import ButtonPacket
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from adafruit_bluefruit_connect.color_packet import ColorPacket
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from neopixel import NeoPixel
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from board import NEOPIXEL, SWITCH
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from adafruit_debouncer import Debouncer
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from digitalio import DigitalInOut, Direction, Pull
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import adafruit_fancyled.adafruit_fancyled as fancy
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pin = DigitalInOut(SWITCH) # Set up built-in pushbutton switch
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pin.direction = Direction.INPUT
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pin.pull = Pull.UP
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switch = Debouncer(pin)
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pixels = NeoPixel(NEOPIXEL, 1) # Set up built-in NeoPixel
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AQUA = 0x00FFFF # (0, 255, 255)
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GREEN = 0x00FF00 # (0, 255, 0)
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ORANGE = 0xFF8000 # (255, 128, 0)
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RED = 0xFF0000 # (255, 0, 0)
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BLUE = 0x0000FF # (0, 0, 255)
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gradients = {'Off': [(0.0, RED), (0.75, ORANGE)],
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'On': [(0.0, GREEN), (1.0, AQUA)]}
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palette = fancy.expand_gradient(gradients['Off'], 30)
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gamma_levels = (0.25, 0.3, 0.15)
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color_index = 1
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fade_direction = 1
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TARGET = 'a0:b4:c2:d0:e7:f2' # CHANGE TO YOUR BLE ADDRESS
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button_packet = ButtonPacket("1", True) # Transmits pressed button 1
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scanner = Scanner() # BLE Scanner
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uart_client = UARTClient() # BLE Client
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while True:
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uart_addresses = []
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pixels[0] = BLUE # Blue LED indicates disconnected status
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pixels.show()
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# Keep trying to find target UART peripheral
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while not uart_addresses:
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uart_addresses = uart_client.scan(scanner)
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for address in uart_addresses:
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if TARGET in str(address):
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uart_client.connect(address, 5) # Connect to target
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while uart_client.connected: # Connected
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switch.update()
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if switch.fell: # Check for button press
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try:
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uart_client.write(button_packet.to_bytes()) # Transmit press
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except OSError:
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pass
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# Check for LED status receipt
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if uart_client.in_waiting:
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packet = Packet.from_stream(uart_client)
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if isinstance(packet, ColorPacket):
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if fancy.CRGB(*packet.color).pack() == GREEN: # Color match
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# Green indicates on state
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palette = fancy.expand_gradient(gradients['On'], 30)
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else:
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# Otherwise red indicates off
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palette = fancy.expand_gradient(gradients['Off'], 30)
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# NeoPixel color fading routing
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color = fancy.palette_lookup(palette, color_index / 29)
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color = fancy.gamma_adjust(color, brightness=gamma_levels)
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c = color.pack()
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pixels[0] = c
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pixels.show()
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if color_index == 0 or color_index == 28:
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fade_direction *= -1 # Change direction
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color_index += fade_direction
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sleep(0.02)
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