mirror of
https://github.com/miketeachman/micropython-rotary.git
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82 lines
2.4 KiB
Python
82 lines
2.4 KiB
Python
# MIT License (MIT)
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# Copyright (c) 2020 Mike Teachman
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# https://opensource.org/licenses/MIT
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# Platform-specific MicroPython code for the rotary encoder module
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# Pyboard implementation
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# Documentation:
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# https://github.com/MikeTeachman/micropython-rotary
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import os
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from pyb import Pin
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from pyb import ExtInt
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from rotary import Rotary
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class RotaryIRQ(Rotary):
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def __init__(self, pin_num_clk, pin_num_dt, min_val=0, max_val=10, incr=1,
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reverse=False, range_mode=Rotary.RANGE_UNBOUNDED, pull_up=False, half_step=False, invert=False):
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super().__init__(min_val, max_val, incr, reverse, range_mode, half_step, invert)
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if pull_up == True:
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self._pin_clk = Pin(pin_num_clk, Pin.IN, Pin.PULL_UP)
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self._pin_dt = Pin(pin_num_dt, Pin.IN, Pin.PULL_UP)
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self._pin_clk_irq = ExtInt(
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pin_num_clk,
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ExtInt.IRQ_RISING_FALLING,
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Pin.PULL_UP,
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self._process_rotary_pins)
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self._pin_dt_irq = ExtInt(
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pin_num_dt,
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ExtInt.IRQ_RISING_FALLING,
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Pin.PULL_UP,
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self._process_rotary_pins)
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else:
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self._pin_clk = Pin(pin_num_clk, Pin.IN)
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self._pin_dt = Pin(pin_num_dt, Pin.IN)
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self._pin_clk_irq = ExtInt(
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pin_num_clk,
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ExtInt.IRQ_RISING_FALLING,
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Pin.PULL_NONE,
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self._process_rotary_pins)
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self._pin_dt_irq = ExtInt(
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pin_num_dt,
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ExtInt.IRQ_RISING_FALLING,
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Pin.PULL_NONE,
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self._process_rotary_pins)
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# turn on 3.3V output to power the rotary encoder (pyboard D only)
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if 'PYBD' in os.uname().machine:
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Pin('EN_3V3').value(1)
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def _enable_clk_irq(self):
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self._pin_clk_irq.enable()
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def _enable_dt_irq(self):
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self._pin_dt_irq.enable()
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def _disable_clk_irq(self):
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self._pin_clk_irq.disable()
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def _disable_dt_irq(self):
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self._pin_dt_irq.disable()
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def _hal_get_clk_value(self):
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return self._pin_clk.value()
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def _hal_get_dt_value(self):
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return self._pin_dt.value()
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def _hal_enable_irq(self):
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self._enable_clk_irq()
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self._enable_dt_irq()
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def _hal_disable_irq(self):
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self._disable_clk_irq()
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self._disable_dt_irq()
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def _hal_close(self):
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self._hal_disable_irq()
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