77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
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# 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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# ESP8266/ESP32 implementation
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# Documentation:
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# https://github.com/MikeTeachman/micropython-rotary
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from machine import Pin
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from rotary import Rotary
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from sys import platform
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_esp8266_deny_pins = [16]
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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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if platform == 'esp8266':
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if pin_num_clk in _esp8266_deny_pins:
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raise ValueError(
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'%s: Pin %d not allowed. Not Available for Interrupt: %s' %
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(platform, pin_num_clk, _esp8266_deny_pins))
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if pin_num_dt in _esp8266_deny_pins:
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raise ValueError(
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'%s: Pin %d not allowed. Not Available for Interrupt: %s' %
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(platform, pin_num_dt, _esp8266_deny_pins))
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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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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._enable_clk_irq(self._process_rotary_pins)
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self._enable_dt_irq(self._process_rotary_pins)
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def _enable_clk_irq(self, callback=None):
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self._pin_clk.irq(
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trigger=Pin.IRQ_RISING | Pin.IRQ_FALLING,
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handler=callback)
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def _enable_dt_irq(self, callback=None):
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self._pin_dt.irq(
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trigger=Pin.IRQ_RISING | Pin.IRQ_FALLING,
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handler=callback)
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def _disable_clk_irq(self):
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self._pin_clk.irq(handler=None)
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def _disable_dt_irq(self):
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self._pin_dt.irq(handler=None)
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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(self._process_rotary_pins)
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self._enable_dt_irq(self._process_rotary_pins)
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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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