70 lines
2.1 KiB
Python
Executable File
70 lines
2.1 KiB
Python
Executable File
#!/bin/env python
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import signal
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import RPi.GPIO as GPIO
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import requests
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import time
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print("""buttons.py - Detect which button has been pressed
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This example should demonstrate how to:
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1. set up RPi.GPIO to read buttons,
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2. determine which button has been pressed
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Press Ctrl+C to exit!
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""")
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# My music server URL
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url = "http://192.168.0.114:6680/mopidy/rpc"
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lastpress = 0
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# The buttons on Pirate Audio are connected to pins 5, 6, 16 and 24
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# Boards prior to 23 January 2020 used 5, 6, 16 and 20
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# try changing 24 to 20 if your Y button doesn't work.
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BUTTONS = [5, 6, 16, 24]
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# These correspond to buttons A, B, X and Y respectively
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LABELS = ['A', 'B', 'X', 'Y']
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# Set up RPi.GPIO with the "BCM" numbering scheme
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GPIO.setmode(GPIO.BCM)
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# Buttons connect to ground when pressed, so we should set them up
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# with a "PULL UP", which weakly pulls the input signal to 3.3V.
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GPIO.setup(BUTTONS, GPIO.IN, pull_up_down=GPIO.PUD_UP)
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# "handle_button" will be called every time a button is pressed
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# It receives one argument: the associated input pin.
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def handle_button(pin):
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global lastpress
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if lastpress + 1 >= time.time():
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print("dubbel")
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return
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label = LABELS[BUTTONS.index(pin)]
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print("Button press detected on pin: {} label: {}".format(pin, label))
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actions = { "A": "core.playback.resume",
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"B": "core.playback.pause",
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"X": "core.playback.next",
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"Y": "core.playback.previous" }
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js1 = { "method": actions[label], "jsonrpc": "2.0", "params": {}, "id": 1 }
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js2 = requests.post(url, json=js1)
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uri = js2.json()["result"]
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print (actions[label], label, uri)
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lastpress = time.time()
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# Loop through out buttons and attach the "handle_button" function to each
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# We're watching the "FALLING" edge (transition from 3.3V to Ground) and
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# picking a generous bouncetime of 100ms to smooth out button presses.
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for pin in BUTTONS:
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GPIO.add_event_detect(pin, GPIO.FALLING, handle_button, bouncetime=100)
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# Finally, since button handlers don't require a "while True" loop,
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# we pause the script to prevent it exiting immediately.
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signal.pause()
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