60 lines
1.4 KiB
Python
60 lines
1.4 KiB
Python
# This example allows you to test Inky Frame's buttons
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# It does not update the screen.
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from pimoroni import ShiftRegister
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from machine import Pin
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import time
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# Inky Frame uses a shift register to read the buttons
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SR_CLOCK = 8
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SR_LATCH = 9
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SR_OUT = 10
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sr = ShiftRegister(SR_CLOCK, SR_LATCH, SR_OUT)
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# Simple class to debounce button input and handle LED
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class Button:
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def __init__(self, idx, led, debounce=50):
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self.led = Pin(led, Pin.OUT) # LEDs are just regular IOs
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self.led.on()
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self._idx = idx
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self._debounce_time = debounce
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self._changed = time.ticks_ms()
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self._last_value = None
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def debounced(self):
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return time.ticks_ms() - self._changed > self._debounce_time
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def get(self, sr):
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value = sr[self._idx]
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if value != self._last_value and self.debounced():
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self._last_value = value
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self._changed = time.ticks_ms()
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return value
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button_a = Button(7, 11)
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button_b = Button(6, 12)
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button_c = Button(5, 13)
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button_d = Button(4, 14)
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button_e = Button(3, 15)
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while True:
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sr.read()
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if button_a.get(sr):
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button_a.led.toggle()
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if button_b.get(sr):
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button_b.led.toggle()
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if button_c.get(sr):
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button_c.led.toggle()
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if button_d.get(sr):
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button_d.led.toggle()
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if button_e.get(sr):
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button_e.led.toggle()
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time.sleep(1.0 / 60) # Poll 60 times/second
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