示例十、红外遥控器

//Arduino C demo
#include "IRremote.h"

IRrecv irrecv(4);
decode_results results;
unsigned long key;
unsigned long ir_value;

void IR_key() {
  static double ir_LastTime;
  if (irrecv.decode(&results)) {
    ir_LastTime = millis();
    ir_value = results.value;
    if (results.value != 0xFFFFFFFF) {
      key = results.value;
    }
    irrecv.resume();
  } else if ((millis() - ir_LastTime) >= 180) {
    key = 0;
  }
  else
    ir_value = 0;
}

void setup() {
  irrecv.enableIRIn();
  Serial.begin(9600);
}

void loop() {
  IR_key();
  if (key == 0xFF02FD) {
    Serial.println(0xFF02FD);
  }
  if (key == 0xFF9867) {
    Serial.println(0xFF9867);
  }
  if (key == 0xFFE01F) {
    Serial.println(0xFFE01F);
  }
  if (key == 0xFF906F) {
    Serial.println(0xFF906F);
  }
  key = 0;
}