Use button as a switch

Projects Programming
1

I have this code, which runs once when the button is pressed;

if (digitalRead(A0)) {
  
    int melody[] = {
      NOTE_D3, NOTE_DS3, 
      //set the notes u want , !
    };

    int LooongthS[] = {
      4, 4, 4, 4, 4, 4, 4 
    };

 
      // iterate over the notes of the melody:
      for (int thisNote = 0; thisNote < 7; thisNote++) {

        int Looongth = 1000 / LooongthS[thisNote];
        tone(8, melody[thisNote], Looongth);

        int pauseBetweenNotes = Looongth * 1.30;
        delay(pauseBetweenNotes);

        noTone(8);
      }
    
    for (int i = 0; i <= 4; i++) {

      //Goes Four times

      int redVal = 255;
      int blueVal = 0;
      int greenVal = 0;
      for ( int i = 0 ; i < 255 ; i += 1 ) {
        greenVal += 1;
        redVal -= 1;
        analogWrite( GREEN, 255 - greenVal );
        analogWrite( RED, 255 - redVal );

        delay( delayTime );

      }

      redVal = 0;
      blueVal = 0;
      greenVal = 255;
      for ( int i = 0 ; i < 255 ; i += 1 ) {
        blueVal += 1;
        greenVal -= 1;
        analogWrite( BLUE, 255 - blueVal );
        analogWrite( GREEN, 255 - greenVal );

        delay( delayTime );
      }

      redVal = 0;
      blueVal = 255;
      greenVal = 0;
      for ( int i = 0 ; i < 255 ; i += 1 ) {
        redVal += 1;
        blueVal -= 1;
        analogWrite( RED, 255 - redVal );
        analogWrite( BLUE, 255 - blueVal );

        delay( delayTime );

      }

I would like it that when the button is pressed, it keeps on repeating, until the button is pressed again.

i.e. the button should act like a swithc

could you please help correct the code, any help would be appreciated.
Thank you

2

I would like it that when the button is pressed, it keeps on repeating, until the button is pressed again.

Fine with me. Go right ahead.

If you have problems, take your snippets to http://snippets-r-us.com.

3

Can you help?

4

When your program detects the button press it should record that in a variable - let's call it playTune which could be set to true. Next time you press the button it should change the variable to false.

Then the code to play the tune can check the variable to decide whether to play or not.

...R