kopia lustrzana https://github.com/peterhinch/micropython-micro-gui
43 wiersze
1.4 KiB
Python
43 wiersze
1.4 KiB
Python
# switch.py
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# Copyright (c) 2018-2020 Peter Hinch
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# Released under the MIT License (MIT) - see LICENSE file
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import uasyncio as asyncio
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import utime as time
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from . import launch
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class Switch:
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debounce_ms = 50
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def __init__(self, pin):
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self.pin = pin # Should be initialised for input with pullup
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self._open_func = False
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self._close_func = False
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self.switchstate = self.pin.value() # Get initial state
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asyncio.create_task(self.switchcheck()) # Thread runs forever
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def open_func(self, func, args=()):
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self._open_func = func
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self._open_args = args
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def close_func(self, func, args=()):
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self._close_func = func
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self._close_args = args
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# Return current state of switch (0 = pressed)
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def __call__(self):
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return self.switchstate
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async def switchcheck(self):
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while True:
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state = self.pin.value()
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if state != self.switchstate:
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# State has changed: act on it now.
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self.switchstate = state
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if state == 0 and self._close_func:
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launch(self._close_func, self._close_args)
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elif state == 1 and self._open_func:
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launch(self._open_func, self._open_args)
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# Ignore further state changes until switch has settled
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await asyncio.sleep_ms(Switch.debounce_ms)
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