/*This software is provided in an “AS IS” condition,NO WARRANTIES in any form apply to this software.
 picmicrolab.com 9.27.2017
***************************************************************************************************************
7-Segment Display Counter with Arduino

*/

int Segment_a =  2;
int Segment_b =  3;
int Segment_c =  4;
int Segment_d =  5;
int Segment_e =  6;
int Segment_f =  7;
int Segment_g =  8;
int UP_Down = 9;//0-UP 1 - DOWN
int count = 0; //Count Value

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize 7-Segment I/O as output.
  pinMode(Segment_a, OUTPUT);  //Segment_a
  pinMode(Segment_b, OUTPUT);  //Segment_b
  pinMode(Segment_c, OUTPUT);  //Segment_c
  pinMode(Segment_d, OUTPUT);  //Segment_d
  pinMode(Segment_e, OUTPUT);  //Segment_e
  pinMode(Segment_f, OUTPUT);  //Segment_f
  pinMode(Segment_g, OUTPUT);  //Segment_g
  pinMode(UP_Down, INPUT);  //UP/DOWN COUNT
  
}

void loop() 
{

 if(digitalRead(UP_Down)== LOW)
 {
   
   Display7SegmentDigit(count);
   count++;
   delay(1000);
   if(count == 10)
   count = 0;
 }

 
  if(digitalRead(UP_Down)== HIGH)
 {
  
   Display7SegmentDigit(count);
    count--;
   delay(1000);
   if(count == 0)
   {
    Display7SegmentDigit(0);
    count = 10;
   }
   
 }

 
}

void Display7SegmentDigit(int digit)
{
if(digit == 0)
{
 digitalWrite(Segment_a, HIGH);   // Show digit 0 on 7 - Segment
 digitalWrite(Segment_b, HIGH);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, HIGH);
 digitalWrite(Segment_e, HIGH);
 digitalWrite(Segment_f, HIGH);
 digitalWrite(Segment_g, LOW); 
}
if(digit == 1)
{
 digitalWrite(Segment_a, LOW);   // Show digit 1 on 7 - Segment
 digitalWrite(Segment_b, HIGH);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, LOW);
 digitalWrite(Segment_e, LOW);
 digitalWrite(Segment_f, LOW);
 digitalWrite(Segment_g, LOW); 
}
if(digit == 2)
{
 digitalWrite(Segment_a, HIGH);   // Show digit 2 on 7 - Segment
 digitalWrite(Segment_b, HIGH);
 digitalWrite(Segment_c, LOW);
 digitalWrite(Segment_d, HIGH);
 digitalWrite(Segment_e, HIGH);
 digitalWrite(Segment_f, LOW);
 digitalWrite(Segment_g, HIGH); 
}
if(digit == 3)
{
 digitalWrite(Segment_a, HIGH);   // Show digit 3 on 7 - Segment
 digitalWrite(Segment_b, HIGH);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, HIGH);
 digitalWrite(Segment_e, LOW);
 digitalWrite(Segment_f, LOW);
 digitalWrite(Segment_g, HIGH); 
}
if(digit == 4)
{
 digitalWrite(Segment_a, LOW);   // Show digit 4 on 7 - Segment
 digitalWrite(Segment_b, HIGH);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, LOW);
 digitalWrite(Segment_e, LOW);
 digitalWrite(Segment_f, HIGH);
 digitalWrite(Segment_g, HIGH); 
}
if(digit == 5)
{
 digitalWrite(Segment_a, HIGH);   // Show digit 5 on 7 - Segment
 digitalWrite(Segment_b, LOW);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, HIGH);
 digitalWrite(Segment_e, LOW);
 digitalWrite(Segment_f, HIGH);
 digitalWrite(Segment_g, HIGH); 
}
if(digit == 6)
{
 digitalWrite(Segment_a, HIGH);   // Show digit 6 on 7 - Segment
 digitalWrite(Segment_b, LOW);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, HIGH);
 digitalWrite(Segment_e, HIGH);
 digitalWrite(Segment_f, HIGH);
 digitalWrite(Segment_g, HIGH); 
}
if(digit == 7)
{
 digitalWrite(Segment_a, HIGH);   // Show digit 7 on 7 - Segment
 digitalWrite(Segment_b, HIGH);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, LOW);
 digitalWrite(Segment_e, LOW);
 digitalWrite(Segment_f, LOW);
 digitalWrite(Segment_g, LOW); 
}
if(digit == 8)
{
 digitalWrite(Segment_a, HIGH);   // Show digit 8 on 7 - Segment
 digitalWrite(Segment_b, HIGH);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, HIGH);
 digitalWrite(Segment_e, HIGH);
 digitalWrite(Segment_f, HIGH);
 digitalWrite(Segment_g, HIGH); 
}
if(digit == 9)
{
 digitalWrite(Segment_a, HIGH);   // Show digit 9 on 7 - Segment
 digitalWrite(Segment_b, HIGH);
 digitalWrite(Segment_c, HIGH);
 digitalWrite(Segment_d, HIGH);
 digitalWrite(Segment_e, LOW);
 digitalWrite(Segment_f, HIGH);
 digitalWrite(Segment_g, HIGH); 
}
}