IR Remote control on UNO

by adapting chrisl's idea, I got it done. the code is here.

#include <IRremote.h> int RECV_PIN = 5; #define PB 3392264773 // button code #define VUP 3476004267 // button code #define VDN 2998643817 // button code #define SRC 387001607 // button code #define MUTE 305976139 // button code int pre_p = 0; int pre_src = 0; int pre_mu = 0; //trigger int p = 0; int src = 0; int mu = 0; int pw = 0; int s = 0; int m = 0; IRrecv irrecv(RECV_PIN); decode_results results; unsigned long previous_timestamp; unsigned long check_timestamp; void setup() { Serial.begin(9600); irrecv.enableIRIn(); // Start the receiver } void loop() { if (irrecv.decode(&results)) { if (results.value == PB){ p = 1; if(p != pre_p){ pw = !pw; //Serial.println(pw); Serial.println("pw"); Serial.println(pw); } } if (results.value == VUP) { Serial.println("Vol UP"); } if (results.value == VDN) { Serial.println("Vol Down"); } if (results.value == SRC) { src = 1; if(src != pre_src){ s = !s; Serial.println("s"); Serial.println(s); //Serial.println("Select"); } } if (results.value == MUTE) { mu = 1; if(mu != pre_mu){ m = !m; //Serial.println("Mute"); Serial.println("mu"); Serial.println(m); } } irrecv.resume(); // Receive the next value pre_p = p; pre_src = src; pre_mu = mu; p=0; src = 0; mu = 0; previous_timestamp = millis(); } if(millis() - previous_timestamp > 200){ pre_p = 0; pre_src = 0; pre_mu = 0; } } 

As noted in the comments, you cannot change what the remote is sending. Though I guess, that it would be OK for you to just react to the first occurence of a specific value send consecutively. For that you first need to check the time between these consecutive values send, when holding the button down. That (plus a small margin) will be the threshold to recognize multiple distinct button presses. Note: Depending on the rate, that the remote is sending when holding a button, this might mean, that you cannot distinguish between holding a button and pressing it multiple times in a fast pace.

First define a variable to hold the previous decode results and a timestamp for saving when it arrived:

decode_results previous_results; unsigned long previous_timestamp; 

On receiving a new value via IR, check if the new value is the same as in previous_results. If yes, don't execute the code checking for the actual value. If no, then update previous_results with the new value and act upon the actual received value. Then set the timestamp to the current millis() value and resume receiving.

if (irrecv.decode(&results)) { if(results != previous_results){ previous_results = results; if (results.value == PB) { Serial.println("Power"); } .... } previous_timestamp = millis(); irrecv.resume(); // Receive the next value } 

Now you need to reset the previous_results variable after a specific time threshold, so that consecutive presses on the same button can be registered. Add a corresponding millis() statement to your loop() function:

if(millis() - previous_timestamp > 500){ previous_results = 0; } 

Note: The value of 500ms is just a wild guess. As described at the start, you need to find that value yourself, fitting to your remote. Play a bit with this value until you are satisfied.

All in all something like this:

#include <IRremote.h> int RECV_PIN = 5; #define PB 3392264773 // button code #define VUP 3476004267 // button code #define VDN 2998643817 // button code #define SRC 387001607 // button code #define MUTE 305976139 // button code IRrecv irrecv(RECV_PIN); decode_results results; decode_results previous_results; unsigned long previous_timestamp; void setup() { Serial.begin(9600); irrecv.enableIRIn(); // Start the receiver } void loop() { if (irrecv.decode(&results)) { if(results != previous_results){ previous_results = results; if (results.value == PB) { Serial.println("Power"); } if (results.value == VUP) { Serial.println("Vol UP"); } if (results.value == VDN) { Serial.println("Vol Down"); } if (results.value == SRC) { Serial.println("Select"); } if (results.value == MUTE) { Serial.println("Mute"); } } previous_timestamp = millis(); irrecv.resume(); // Receive the next value } if(millis() - previous_timestamp > 500){ previous_results = 0; } } 

Note: I have not tested this code in any way.