kopia lustrzana https://github.com/peterhinch/micropython-micro-gui
Improve encoder precision.
rodzic
4d98d7aecf
commit
982005736a
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@ -29,22 +29,20 @@ class Encoder:
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yirq = pin_y.irq(trigger=trig, handler=self._y_cb)
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asyncio.create_task(self._run(vmin, vmax, div, callback, args))
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# Hardware IRQ's. Duration 36μs on Pyboard 1.
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# Hardware IRQ's. Duration 36μs on Pyboard 1 ~50μs on ESP32.
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# IRQ latency: 2nd edge may have occured by the time ISR runs, in
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# which case there is no movement.
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def _x_cb(self, pin_x):
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if (x := pin_x()) == self._x: # IRQ latency: if 2nd edge has
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return # occurred there is no movement.
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self._x = x
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fwd = x ^ self._pin_y()
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self._v += 1 if fwd else -1
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self._tsf.set()
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if (x := pin_x()) != self._x:
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self._x = x
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self._v += 1 if x ^ self._pin_y() else -1
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self._tsf.set()
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def _y_cb(self, pin_y):
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if (y := pin_y()) == self._y:
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return
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self._y = y
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fwd = y ^ self._pin_x() ^ 1
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self._v += 1 if fwd else -1
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self._tsf.set()
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if (y := pin_y()) != self._y:
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self._y = y
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self._v += 1 if y ^ self._pin_x() ^ 1 else -1
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self._tsf.set()
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async def _run(self, vmin, vmax, div, cb, args):
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pv = self._v # Prior hardware value
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