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Arduino Forum Problem in using IRremote.h Library
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Related

Problem in using IRremote.h Library

Former Member
Former Member over 10 years ago

Hi,

I am using iRremote.h library.

I want to receive ir signal and based on ir signal I have used switch to diect it to three different cases. In one of the case I am using switch again after receiving the signal. Second time when I am using the switch statement I have used the if statement      

if (irrecv.decode(&results)).

It seems that the problem is not reading this statement. I think the problem is in using the statement

          irrecv.resume();

I have tried it to place it in various places but nothing seems to work.

Could you please see my code and tell me where the problem is

My code is as follows

 

 

 

#include <Wire.h>

#include <IRremote.h>

int RECV_PIN = 11;

IRrecv irrecv(RECV_PIN);

decode_results results;

void setup()

{

Serial.begin(9600);

irrecv.enableIRIn();

 

}

void loop()

{

if (irrecv.decode(&results)){ // have we received an IR signal?

    Serial.println(results.value, HEX);

    switch(results.value)

    {

    case 0x7:

      Serial.println("q");

      break;

    case 0x8:

      Serial.println("w");

      break;

case 0x9:

      Serial.println("e");

      unsigned long sec;

      unsigned long B;

      B=millis();

      sec=millis()-B;

      while(sec < 120000){

        if (irrecv.decode(&results)){ // have we received an IR signal?

          Serial.println(results.value, HEX);

          switch(results.value){

          case 0x21:

            Serial.println("A");

            break;

          case 0x20:

            Serial.println("B");

            break;

          case 0x11:

            Serial.println("c");

            break;

          case 0x10: 

            Serial.println("d");  

            break;

          }

          irrecv.resume();

        }

        sec=millis()-B;

        Serial.println(sec);

      }

      Serial.println("done");

 

      break;

    }

     irrecv.resume();

}

 

}

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  • timswift
    timswift over 10 years ago

    I have the same problem with similar code.

     

     

     

    Tim 

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  • Robert Peter Oakes
    Robert Peter Oakes over 10 years ago

    What is the transmitter and receiver models

     

     

     

    All the IR receivers and TV/Other remotes use a much longer string than a single character, at least the ones I have used in the past

     

     

     

    IE. Numerous TV remotes, the ones that come with RGB LED Strips from China etc etc

     

     

     

    So unless you have a mapping table from these codes to a single key character I can’t see how it would work

     

     

     

    If you look at the library it returns a LONG for results and the chances of it matching a 2 digit hex number are quite slim

     

     

     

    You should get an idea of the codes output if you run the samples that come with the library

     

     

     

    Not sure what library your using but this is a pointer to the one I have used in the past

     

     

     

    https://github.com/shirriff/Arduino-IRremote/blob/master/IRremote.h

     

     

     

    Regards

     

     

     

    Peter

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  • Robert Peter Oakes
    Robert Peter Oakes over 10 years ago

    Forgot to mention

     

     

     

    Resume() simply resets the IR Receiver code to start looking for a new transmit, in case the previous one did not complete

     

     

     

    The routine uses a timer under interrupts and a state machine to read the IR port so can get hung up without that

     

     

     

    Regards

     

     

     

    Peter

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  • newbie2005
    newbie2005 over 7 years ago in reply to Robert Peter Oakes

    I found similar problem, any solution sample code ?

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