// CODE: 12ProgLights.ino

/*  code from: “Programmable DIY Christmas Lights” by Ken Denmead (Geek Dad Series).
       A Radio Shack “Great Create” Project advertisement circa 2012 – original source unknown 
       Ad online at: https:www.charlesrubenstein.com/E4D/ProgrammableDIY_XmasLights.pdf  */

void setup( ) { 
     for (int i=0; i < 12; i++) {		// instead of setting  outputs one at a time
	pinMode (i,  OUTPUT); }
} 

void loop( ) { 
	chaseLR( ); chaseRL( ); centerOut( ); oddEven ( );  	 // define additional functions 
} 

     /* NOTE: Adjust the timeDelay variable in any routine for longer or shorter delays */ 

/* The function “chaseLR” sets up a Left to Right Chaser Sequence*/
void chaseLR( ) { 
	int timeDelay  = 100;
	for (int i=0; i < 12; i++) {	// increment to 12 by 1
	digitalWrite(i, HIGH);
		delay(timeDelay);
	digitalWrite(i, LOW); }
} 

/* The function “chaseRL” sets up a Right to Left Chaser Sequence */
void chaseRL( ) { 
	int timeDelay = 100;
	for (int i=11; i >=0; i--){	// decrement from 11 by 1
	digitalWrite(i, HIGH);
		delay(timeDelay);
	digitalWrite(i, LOW); } 
}

/* The function “centerOut” lights LEDs starting at the center going in both directions. */
void centerOut( ) {
	int timeDelay  = 100; 
	for (int x=0;x < 7; x++) { 	// increment x to 7 by 1 
	int i= 6 + x; int Y =6- x; 	// Create I, Y
				// ‘increment’ i  by 1: LED 7 to LED 12
				// ‘decrement’ Y by 1: LED 6 to LED 1
	digitalWrite(Y, HIGH);
	digitalWrite(i, HIGH); 
		delay(timeDelay); 
	digitalWrite(Y, LOW);
	digitalWrite(i, LOW); } 
} 

/* The function “oddEven” alternates between the odd and even LEDs */
void oddEven( ) {
	int timeDelay = 400;
	int count=10;  for (int x =0; x< 12; x++) { 
	digitalWrite(x, LOW); }
 
	for (int i=0; i< count; i++) { 
	for (int x=0; x< 12; x++) {
		digitalWrite(x, LOW); } 
	for (int Y=0; Y <12; Y+=2) {
		digitalWrite(Y, HIGH); }
 	delay(timeDelay) ;
 
	for (int x=0; x<12; x++) {
		digitalWrite(x, LOW); }
	for (int Y=1;Y <12; Y+=2) {
		digitalWrite(Y, HIGH); }
	delay(timeDelay); }

// Reset outputs to LOW one at a time
        for (int i=0; i < 12; i++) {
  	digitalWrite(i, LOW); 
        delay(50); }
}
//END