IR Receive raw codes

Updated on 23 September 2022

dev board Arduino UNO

sensor infrared

features infrared IR receive raw

This tutorial is more than 1 year old. If the steps below do not work, then please check the latest versions and the documentations of the individual tools used.

Before starting

Dependancies

Ensure the following dependancies are downloaded and available:

IRLib2 and compatible hardware

Pre-requisites

Try these simpler or similar examples:

IR Receiver

Buy the components

Arduino UNO R3

Code

Download code ir-raw-receive.ino

#include <IRLibRecvPCI.h>

IRrecvPCI myReceiver(2);  // Arduino UNO pin 2

void setup() {
  Serial.begin(9600);

  myReceiver.enableIRIn();
  Serial.println("Ready to receive IR signals");
  Serial.println("Point the remote controller to the IR receiver and press!");
}

void loop() {
  if (myReceiver.getResults()) {
    Serial.println("\n\n-------------------------");
    Serial.println("Received IR signal:");

    Serial.print(F("\n#define RAW_DATA_LEN "));
    Serial.println(recvGlobal.recvLength, DEC);

    Serial.print(F("uint16_t rawData[RAW_DATA_LEN]={\n"));
    for (bufIndex_t i = 1; i < recvGlobal.recvLength; i++) {
      Serial.print(recvGlobal.recvBuffer[i], DEC);
      Serial.print(F(", "));
      if ((i % 8) == 0) {
        Serial.print(F("\n"));
      }
    }
    Serial.println(F("1000};"));
    Serial.println("-------------------------");

    myReceiver.enableIRIn();
  }
}

Makefile

BOARD?=arduino:avr:uno
PORT?=/dev/cu.usbmodem14*

.PHONY: default lint all flash clean

default: lint all flash clean

lint:
	cpplint --extensions=ino --filter=-legal/copyright,-whitespace/line_length *.ino

all:
	arduino-cli compile --fqbn $(BOARD) ./

flash:
	arduino-cli upload -p $(PORT) --fqbn $(BOARD)

clean:
	rm -r build

Prototype

A photo of the actual setup.

Schematic

Wire up the hardware accordingly

Serial console

Serial output from the firmware.

Description

This code dumps the raw IR code. This is useful when IR protocols are not defined for example, Mitsubishi Air conditioner model MSY-GE10VA.

Example of a raw dump:

uint16_t rawData[RAW_DATA_LEN] = { 3418, 1742, 410, 1318, 410, 1314, 362, 506, 358, 510, 414, 450, 406, 1318, 362, 510, 354, 514, 354, 1370, 406, 1322, 406, 462, 354, 1366, 414, 454, 386, 478, 406, 1322, 418, 1302, 414, 458, 358, 1366, 410, 1318, 410, 462, 406, 462, 406, 1322, 354, 510, 410, 462, 358, 1366, 414, 450, 358, 510, 430, 438, 406, 462, 414, 450, 358, 510, 362, 506, 410, 450, 414, 458, 378, 494, 406, 458, 410, 462, 406, 466, 406, 466, 354, 510, 418, 458, 410, 450, 410, 454, 410, 462, 418, 450, 386, 1338, 410, 454, 414, 454, 406, 466, 358, 506, 410, 462, 418, 1306, 378, 1342, 422, 462, 358, 510, 402, 474, 386, 1338, 354, 1370, 354, 514, 414, 1310, 374, 490, 410, 462, 414, 462, 386, 482, 386, 478, 402, 1322, 386, 1338, 406, 462, 358, 1366, 410, 1318, 362, 510, 414, 454, 410, 454, 386, 482, 354, 514, 390, 1334, 358, 1362, 418, 1306, 358, 1370, 386, 482, 438, 438, 354, 506, 438, 438, 410, 450, 394, 1330, 358, 1366, 434, 1290, 406, 462, 358, 510, 402, 470, 410, 454, 410, 458, 434, 438, 402, 470, 354, 506, 410, 462, 414, 454, 414, 450, 414, 458, 402, 466, 406, 462, 386, 482, 410, 458, 410, 450, 410, 466, 410, 450, 414, 462, 418, 458, 410, 462, 410, 454, 414, 450, 414, 454, 354, 510, 386, 482, 354, 514, 414, 450, 410, 462, 418, 450, 402, 462, 414, 454, 434, 438, 406, 462, 406, 462, 386, 482, 406, 458, 390, 474, 414, 454, 406, 462, 414, 450, 410, 454, 414, 454, 414, 454, 378, 490, 354, 510, 402, 470, 402, 462, 386, 482, 414, 1306, 362, 1362, 418, 450, 378, 1346, 354, 1374, 414, 1306, 414, 454, 358, 1000};