ARDUINO UNO: IR receiver sketch

Projects Programming
1

Hello there, i'm making a simple menu with TVout and IRremote.
Well, when i try a example of IRremote library it works fine.
but when i try this :

#include <IRremote.h>
#include <TVout.h>
#include <font6x8.h>

//IR
int RECV_PIN = 11;
IRrecv irrecv(RECV_PIN);
decode_results results;
//TV
TVout TV;
#define SCREEN_WIDTH 120
#define SCREEN_HEIGHT 80
//MENU
int CursorX =  0;
int CursorY =  0;
String text = "";
//TIMER
#define FREQUENCY 30
long timer = 0;

char textTable[3][10] = { //3 lines
  { 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P' },//10 letters
  { 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ' ' },//10 letters
  { ' ', 'Z', 'X', 'C', 'V', 'B', 'N', 'M', '_', ' ' } //10 letters
};

void setup() {
  //WELCOME SCREEN
  Serial.begin(9600);
  Serial.println("TV infrared controller");
  Serial.print("Initializing IR controller");
  for(int i = 0; i < 3; i ++) { delay(250); Serial.print("."); }
  Serial.println("done");
  Serial.flush(); 
  
  //IR RECEIVER
  irrecv.enableIRIn();
  pinMode(13, OUTPUT);
  Serial.print("Initializing TV controller");
  for(int i = 0; i < 3; i ++) { delay(250); Serial.print("."); }
  Serial.println("done");
  Serial.flush(); 
  
  //TV
  TV.begin(PAL, SCREEN_WIDTH, SCREEN_HEIGHT);
  TV.select_font(font6x8);  
  timer = millis();
}

void loop() {    
  updateButtons();   
  if(millis() - timer >= FREQUENCY) {
    updateTV();
    timer = millis();
  }
}

void updateTV () {
  TV.clear_screen();
  //DRAW TABLE
  //LINES
  //for(int i = 0; i < SCREEN_HEIGHT / 8; i++){ TV.draw_line(i * 8, 0, i * 8, 26, 1); }//VERTICAL
  //for(int i = 0; i < SCREEN_WIDTH / 6; i++){ TV.draw_line(0, i * 6, 20, i * 6,  1); }//HORIZONTAL  
  //CHARACTERS TABLE
  for(int column = 0; column < 10; column++) { TV.print_char(column * 6 + 1, 1,  textTable[0][column]); }//FIRST LINE
  for(int column = 0; column < 10; column++) { TV.print_char(column * 6 + 4, 9,  textTable[1][column]); }//SECOND LINE
  for(int column = 0; column < 10; column++) { TV.print_char(column * 6 + 1, 17, textTable[2][column]); }//THIRD LINE
  //CURSOR RECTANGLE
  if(CursorY == 0)      { TV.draw_rect(CursorX*6,    8, (CursorX + 1)*6,  8, 2, 2); }
  else if(CursorY == 1) { TV.draw_rect(CursorX*6+3, 16, (CursorX + 1)*6, 16, 2, 2); }
  else if(CursorY == 2) { TV.draw_rect(CursorX*6+1, 24, (CursorX + 1)*6, 24, 2, 2); }
  //BUFFER STRING
  TV.print(SCREEN_WIDTH-6, SCREEN_HEIGHT-8, text.c_str());
}

void updateButtons () {  
   if (irrecv.decode(&results)) {    
    irrecv.resume();
  }
  if(results.value != 0) {    
    Serial.print("Infrared signal received : 0x");
    Serial.println(results.value, HEX);
    decodeButton();
    digitalWrite(13, HIGH);  
  } else {
    digitalWrite(13, LOW);
  }
}

void decodeButton () {
  switch (results.value) {
    case 0x8070A658://UP
      CursorY--;
    break;
    case 0x80702659://DOWN
      CursorY++;
    break;
    case 0x8070265B://RIGHT
      CursorX++;
    break;
    case 0x8070A65A://LEFT
      CursorX--;
    break;
    case 0x8070265C://ENTER
      text += textTable[CursorX][CursorY];
    break;
  }
  if(CursorY < 0) CursorY = 3;
  else if(CursorY > 3) CursorY = 0;
  if(CursorX < 0) CursorX = 10;
  else if(CursorX > 10) CursorX = 0;
}

doesn't works.
Can someone tell me what is wrong ?
Thanks.

2

Can someone tell me what is wrong ?

The code does something. You didn't say what.
You expect the code to do something. You didn't say what.

So, no.

3

Oh, sorry :slight_smile:
Well, my code is :
Make a virtual keyboard for a TV.
And that keyboard is controlled by a IR remote.
So, for select the letter you need to use the arrow keys on the remote and press 'OK' button

What isn't happening :
I want that the arduino receivesthe IR signal, and that isn't happening.

4

The TVout library uses a timer. It's use of that timer is critical AND there is not a lot of time available to do anything else. The shield uses some pins.

The IR library uses a timer. The IR receiver uses a pin.

If there is a conflict between the pins or between the timers, one of the devices is not going to work. Try initializing the TV object before the irrecv object, in setup(). If the IR then works, but the TVout doesn't, you know that you have a conflict.