嵌入式物联网实战开发例程14-ESP32红外遥控器IR接收及解码（MicroPythion版例程）.rar

""" ****************************************************************************** * @file remote.py * @author * @version V1.0 * @date 2023-12-01 * @brief 红外接收驱动 * 定制开发，技术V:349014857 * 更多例程：https://iot666.blog.csdn.net/ * 开发咨询：http://doc.yotill.com """ from machine import Pin import time """ * 定义红外接收类 """ class REMOTE_IR(object): # 定义键值及内容 REMOTE_CODE = { 0: "ERROR", 162: "POWER", 98: "UP", 2: "PLAY", 226: "ALIENTEK", 194: "RIGHT", 34: "LEFT", 224: "VOL-", 168: "DOWN", 144: "VOL+", 104: "1", 152: "2", 176: "3", 48: "4", 24: "5", 122: "6", 16: "7", 56: "8", 90: "9", 66: "0", 82: "DELETE" } # 红外接收初始化 def __init__(self, gpio_num): self.irRecv = Pin(gpio_num, Pin.IN, Pin.PULL_UP) self.irRecv.irq(trigger = Pin.IRQ_RISING | Pin.IRQ_FALLING, handler = self.ex_handler) # 配置中断信息 # 声明变量 self.ir_step = 0 self.ir_count = 0 self.rx_buf = [0 for i in range(64)] self.rx_ok = False self.cmd = None self.repeat = 0 self.t_ok = None self.start = 0 self.start_last = 0 # 红外接收回调函数 def ex_handler(self, source): """ 中断回调函数 """ thisComeInTime = time.ticks_us() # 更新时间 curtime = time.ticks_diff(thisComeInTime, self.start) self.start = thisComeInTime if curtime >= 8500 and curtime <= 9500: self.ir_step = 1 return if self.ir_step == 1: if curtime >= 4000 and curtime <= 5000: self.ir_step = 2 self.rx_ok = False self.ir_count = 0 elif curtime >= 2000 and curtime <= 3000: # 长按重复接收 self.ir_step = 3 self.repeat += 1 elif self.ir_step == 2: # 接收4个字节 self.rx_buf[self.ir_count] = curtime self.ir_count += 1 if self.ir_count >= 64: self.rx_ok = True self.t_ok = self.start # 记录最后ok的时间 self.ir_step = 0 elif self.ir_step == 3: # 重复 if curtime >= 500 and curtime <= 650: self.repeat += 1 # 检测命令 def check_cmd(self): one_byte = 0 for i in range(32): x = i * 2 t = self.rx_buf[x] + self.rx_buf[x + 1] one_byte <<= 1 if t >= 1800 and t <= 2800: one_byte += 1 cmd_data = (one_byte & 0x0000ff00) >> 8 self.cmd = cmd_data # 红外解码 def remote_scan(self): # 接收到数据 if self.rx_ok: self.check_cmd() self.rx_ok = False # 获取对应按钮字符 s = self.REMOTE_CODE.get(self.cmd) return self.cmd,s