麻烦找一下openmv控制红外遥控HX1838B接收头的程序，（NEC通讯协议）

[igkg]

就是这种红外遥控器的控制程序

[kidswong999]

这个就是根据NEC通信协议，控制IO就行。

[kidswong999]

这个是我几年前写的了。

ir_remote.py

import pyb
from pyb import Pin, ExtInt

default_remoter = {\
69 : {"value": "1", "longtap": False}, \
70 : {"value": "2", "longtap": False}, \
71 : {"value": "3", "longtap": False}, \
68 : {"value": "4", "longtap": False}, \
64 : {"value": "5", "longtap": False}, \
67 : {"value": "6", "longtap": False}, \
7  : {"value": "7", "longtap": False}, \
21 : {"value": "8", "longtap": False}, \
9  : {"value": "9", "longtap": False}, \
22 : {"value": "*", "longtap": False}, \
25 : {"value": "0", "longtap": False}, \
13 : {"value": "#", "longtap": False}, \
24 : {"value": "up", "longtap": True}, \
82 : {"value": "down", "longtap": True}, \
8  : {"value": "left", "longtap": True}, \
90 : {"value": "right", "longtap": True}, \
28 : {"value": "OK", "longtap": False} \
}

class IRrecv:
    def __init__(self, pin, remoter = default_remoter):
        self.pin = pin
        self.command = None
        self.hold_time = 0
        self.remoter = remoter
        self.ext = ExtInt(pin, ExtInt.IRQ_FALLING, Pin.PULL_NONE, self.__receive)
    def read_pulse(self, value):
        start = pyb.micros()
        while self.pin.value() == value and pyb.elapsed_micros(start) < 50000:
            pass
        return pyb.elapsed_micros(start)
    def read_byte(self):
        data = 0
        for i in range(8):
            if abs(self.read_pulse(0) - 560) > 200:
                return None
            pulse = self.read_pulse(1)
            if abs(pulse - 560 ) < 200:
                pass
            elif abs(pulse - 1690 ) < 300:
                data = (1 << i) + data
            else:
                return None
        return data
    def __receive(self, line):
        self.ext.disable()
        if abs(self.read_pulse(0) - 9000 ) < 500:
            pulse = self.read_pulse(1)
            if abs(pulse - 2250) < 500:
                if (not self.remoter) or self.remoter[self.command]["longtap"]:
                    self.hold_time += 1
            elif abs(pulse - 4500) < 500:
                custom_code = self.read_byte()
                custom_code_complement = self.read_byte()
                command_code = self.read_byte()
                command_code_complement = self.read_byte()
                if custom_code is not None and \
                custom_code_complement is not None and \
                command_code is not None and \
                command_code_complement is not None:
                    if custom_code + custom_code_complement == 255 and \
                    command_code + command_code_complement == 255:
                        self.command = command_code
                        self.hold_time = 1
        self.ext.enable()
    def __read_raw_code__(self):
        command = self.command
        self.command = None
        return(command)

    def read(self):
        if self.hold_time == 0:
            return None
        else:
            key = self.remoter[self.command]["value"]
            self.hold_time = 0
            return key

main.py

from pyb import Pin
import time
from ir_remote import IRrecv

ir = IRrecv(Pin("P6", Pin.IN))

while(True):
    key = ir.read()
    if key:
        print(key)
    time.sleep_ms(100)