Micopython与旋转按钮（Encoder）

一、 encoder.py文件    

• CLK pin attached to GPIO12
• DT pin attached to GPIO13
• GND pin attached to GND    旋转编码器s1->CLK  s2->DT

import time
from rotary_irq_esp import RotaryIRQ

r = RotaryIRQ(pin_num_clk=12, #clk引脚
              pin_num_dt=13,  #data引脚
              min_val=100,    #起始值
              max_val=230,    #终止值
              reverse=False,  #是否反方向增加
              range_mode=RotaryIRQ.RANGE_WRAP)#RANGE_WRAP越界后从另一端开始
              
val_old = r.value()

while True:
    val_new = r.value()
    
    if val_old != val_new:
        val_old = val_new
        print('result =', val_new)
        
    time.sleep_ms(50)

二、rotary_irq_esp.py

# MIT License (MIT)
# Copyright (c) 2020 Mike Teachman
# https://opensource.org/licenses/MIT

# Platform-specific MicroPython code for the rotary encoder module
# ESP8266/ESP32 implementation

# Documentation:
#   https://github.com/MikeTeachman/micropython-rotary

from machine import Pin
from rotary import Rotary
from sys import platform

_esp8266_deny_pins = [16]

class RotaryIRQ(Rotary):

    def __init__(self, pin_num_clk, pin_num_dt, min_val=0, max_val=10, incr=1,
                 reverse=False, range_mode=Rotary.RANGE_UNBOUNDED, pull_up=False, half_step=False, invert=False):

        if platform == 'esp8266':
            if pin_num_clk in _esp8266_deny_pins:
                raise ValueError(
                    '%s: Pin %d not allowed. Not Available for Interrupt: %s' %
                    (platform, pin_num_clk, _esp8266_deny_pins))
            if pin_num_dt in _esp8266_deny_pins:
                raise ValueError(
                    '%s: Pi