// Filename = 7segTEST2.ino
// Sequences through the seven-segment display numbers 
// 0 through 9 and decimal point
// Common Anode Display: LED Segments turn ON when LOW
// AVOID USING PINS 0 and 1 to avoid upload challenges!
int aSeg = 2;	int bSeg = 3;	int cSeg = 4;
int dSeg = 5;	int eSeg = 6;	int fSeg = 7;
int gSeg = 8;	int dpSeg = 9;  

void setup ( ) {
//set up digital I/O for pins 1 through 8 as OUTPUTs
	for (int i=2; i<10; i++) {
	pinMode (i, OUTPUT);	
}

/* The above “for” code sets up the seven segment and 
decimal point pins and also creates each of the 
Uno digital I/O pins, 1 through 8, as OUTPUTs */

// With pins set up, turn the display ON and then OFF.
// We can use the same pin ‘trick’ as before
// to turn the segments On and OFF

void loop( ) {
// Realtime TEST of 7-Segment Display
 
// TEST1: TURN ON (LOW) Number 8 plus decimal :
//write digital I/O for pins 1 through 8 as LOW
//add a 200 millisecond delay between write outputs
	for (int i=2; i<10; i++) {
		digitalWrite(i, LOW); delay(200); }
 	delay(200);

// TEST2: Turn OFF (HIGH) Number 8 and decimal
//write digital I/O for pins 1 through 8 as HIGH
	for (int i=10; i>2; i--) {
		digitalWrite(i, HIGH); delay(200); }
 	delay(200);
}