本文介绍使用Arduino Uno控制红外模块的示例程序。 这个程序将读取红外接收器接收到的数据，并通过串口监视器显示出来，并打印各按键。
1.连接红外接收器到Arduino：
- VCC 连接到 Arduino 的 5V
- GND 连接到 Arduino 的 GND
- OUT 连接到 Arduino 的数字引脚2
2.安装IRremote库。
3.代码
c
#include <Arduino.h>
#include <IRremote.hpp> // Include the library
// Define the pin connected to the IR receiver
#define IR_RECEIVE_PIN 2
void setup() {
Serial.begin(115200);
// Just to know which program is running on my Arduino
Serial.println(F("START " __FILE__ " from " __DATE__ "\r\nUsing library version " VERSION_IRREMOTE));
// Start the receiver and if not 3rd parameter specified, take LED_BUILTIN pin from the internal boards definition as default feedback LED
IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK);
Serial.print(F("Ready to receive IR signals of protocols: "));
printActiveIRProtocols(&Serial);
// Serial.println(F("at pin " STR(IR_RECEIVE_PIN)));
}
void loop() {
/*
* Check if received data is available and if yes, try to decode it.
* Decoded result is in the IrReceiver.decodedIRData structure.
*
* E.g. command is in IrReceiver.decodedIRData.command
* address is in command is in IrReceiver.decodedIRData.address
* and up to 32 bit raw data in IrReceiver.decodedIRData.decodedRawData
*/
if (IrReceiver.decode()) {
/*
* Print a summary of received data
*/
if (IrReceiver.decodedIRData.protocol == UNKNOWN) {
Serial.println(F("Received noise or an unknown (or not yet enabled) protocol"));
// We have an unknown protocol here, print extended info
IrReceiver.printIRResultRawFormatted(&Serial, true);
IrReceiver.resume(); // Do it here, to preserve raw data for printing with printIRResultRawFormatted()
} else {
IrReceiver.resume(); // Early enable receiving of the next IR frame
IrReceiver.printIRResultShort(&Serial);
IrReceiver.printIRSendUsage(&Serial);
}
Serial.println();
/*
* Finally, check the received data and perform actions according to the received command
*/
if (IrReceiver.decodedIRData.flags & IRDATA_FLAGS_IS_REPEAT) {
Serial.println(F("Repeat received. Here you can repeat the same action as before."));
} else {
if (IrReceiver.decodedIRData.command == 0x45) {
Serial.println(F("Received command 0x45 = Btn CH-"));
// do something
} else if (IrReceiver.decodedIRData.command == 0x46) {
Serial.println(F("Received command 0x46 = Btn CH"));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x47) {
Serial.println(F("Received command 0x47 = Btn CH+"));
// do something
} else if (IrReceiver.decodedIRData.command == 0x44) {
Serial.println(F("Received command 0x44 = Btn <<"));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x40) {
Serial.println(F("Received command 0x40 = Btn >>"));
// do something
} else if (IrReceiver.decodedIRData.command == 0x43) {
Serial.println(F("Received command 0x43 = Btn >II"));
// do something else
}else if (IrReceiver.decodedIRData.command == 0x7) {
Serial.println(F("Received command 0x7 = Btn -."));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x15) {
Serial.println(F("Received command 0x15 = Btn +."));
// do something
} else if (IrReceiver.decodedIRData.command == 0x9) {
Serial.println(F("Received command 0x9 = Btn EQ."));
// do something else
}else if (IrReceiver.decodedIRData.command == 0x16) {
Serial.println(F("Received command 0x16 = Btn 0."));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x19) {
Serial.println(F("Received command 0x19 = Btn 100+."));
// do something
} else if (IrReceiver.decodedIRData.command == 0xD) {
Serial.println(F("Received command 0xD = Btn 200+."));
// do something else
} else if (IrReceiver.decodedIRData.command == 0xC) {
Serial.println(F("Received command 0xC = Btn 1."));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x18) {
Serial.println(F("Received command 0x18 = Btn 2."));
// do something
} else if (IrReceiver.decodedIRData.command == 0x5E) {
Serial.println(F("Received command 0x5E = Btn 3."));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x8) {
Serial.println(F("Received command 0x8 = Btn 4."));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x1C) {
Serial.println(F("Received command 0x1C = Btn 5."));
// do something
} else if (IrReceiver.decodedIRData.command == 0x5A) {
Serial.println(F("Received command 0x5A = Btn 6."));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x42) {
Serial.println(F("Received command 0x42 = Btn 7."));
// do something else
} else if (IrReceiver.decodedIRData.command == 0x52) {
Serial.println(F("Received command 0x52 = Btn 8."));
// do something
} else if (IrReceiver.decodedIRData.command == 0x4A) {
Serial.println(F("Received command 0x4A = Btn 9."));
// do something else
}
}
}
}4.输出信息
txt
Repeat received. Here you can repeat the same action as before.
Protocol=NEC Address=0x0 Command=0xC Raw-Data=0xF30CFF00 32 bits LSB first Gap=499200us Duration=68750us
Send with: IrSender.sendNEC(0x0, 0xC, <numberOfRepeats>);
Received command 0xC = Btn 1.
Protocol=NEC Address=0x0 Command=0xC Repeat Gap=39550us Duration=12200us
Repeat received. Here you can repeat the same action as before.
Protocol=NEC Address=0x0 Command=0x18 Raw-Data=0xE718FF00 32 bits LSB first Gap=424050us Duration=68800us
Send with: IrSender.sendNEC(0x0, 0x18, <numberOfRepeats>);
Received command 0x18 = Btn 2.
Protocol=NEC Address=0x0 Command=0x18 Repeat Gap=39700us Duration=12250us
Repeat received. Here you can repeat the same action as before.
Protocol=NEC Address=0x0 Command=0x5E Raw-Data=0xA15EFF00 32 bits LSB first Gap=349000us Duration=68800us
Send with: IrSender.sendNEC(0x0, 0x5E, <numberOfRepeats>);
Received command 0x5E = Btn 3.
Protocol=NEC Address=0x0 Command=0x5E Repeat Gap=39800us Duration=12250us