/*This software is provided in an “AS IS” condition,NO WARRANTIES in any form apply to this software.
 picmicrolab.com 11.04.2017
***************************************************************************************************************
//8x8 LED Dot Matrix Display with Arduino 
*/
//***********MAX7219 pins**************************
//2- Data Out
//3- CLK
//4 -Load
int DataOUT = 2;
int CLK = 3;
int Load = 4;


void setup() 
{
 // initialize I/O pins.

   pinMode(DataOUT, OUTPUT); //
   pinMode(CLK, OUTPUT); //
   pinMode(Load, OUTPUT); //
   digitalWrite(Load,HIGH);
   digitalWrite(CLK,HIGH);
   digitalWrite(Load,HIGH);
    //delay(500);
//***************************MAX7219 Init*****************************************
   SendDataMax7219(0xfc,0xff);//Normal Operation
   //delay(500);
   SendDataMax7219(0xfa,0xf1);//Intensity
   //delay(500);
   //SendDataMax7219(0xff,0xff);//Display Test
   SendDataMax7219(0xfB,0xf7); //Scan-Limit Register Format Digits 0,1,2,3 are ON
   //delay(500);
  SendDataMax7219(0xf9,0x00);//Decode Mode - Code B Font
  delay(500);
//********************************************************************************

}

void loop() 
{

for(int i =0;i<16;i++)
{
SendDataDotMatrix(i);
delay(1000);
}

}


void SendDataDotMatrix(int Digit)
{
if(Digit == 1)
{
 //-----------------Show 1----------------------
SendDataMax7219(0xf1,0x10);
SendDataMax7219(0xf2,0x30);
SendDataMax7219(0xf3,0x10);
SendDataMax7219(0xf4,0x10);
SendDataMax7219(0xf5,0x10);
SendDataMax7219(0xf6,0x10);
SendDataMax7219(0xf7,0x10);
SendDataMax7219(0xf8,0x00);
//---------------------------------------------
}
if(Digit == 2)
{
//-----------------Show 2----------------------
SendDataMax7219(0xf1,0x7c);
SendDataMax7219(0xf2,0x04);
SendDataMax7219(0xf3,0x04);
SendDataMax7219(0xf4,0x7c);
SendDataMax7219(0xf5,0x40);
SendDataMax7219(0xf6,0x40);
SendDataMax7219(0xf7,0x7c);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 3)
{
//-----------------Show 3----------------------
SendDataMax7219(0xf1,0x7c);
SendDataMax7219(0xf2,0x04);
SendDataMax7219(0xf3,0x04);
SendDataMax7219(0xf4,0x3c);
SendDataMax7219(0xf5,0x04);
SendDataMax7219(0xf6,0x04);
SendDataMax7219(0xf7,0x7c);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 4)
{
//-----------------Show 4----------------------
SendDataMax7219(0xf1,0x44);
SendDataMax7219(0xf2,0x44);
SendDataMax7219(0xf3,0x44);
SendDataMax7219(0xf4,0x7c);
SendDataMax7219(0xf5,0x04);
SendDataMax7219(0xf6,0x04);
SendDataMax7219(0xf7,0x04);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 5)
{
//-----------------Show 5----------------------
SendDataMax7219(0xf1,0x7c);
SendDataMax7219(0xf2,0x40);
SendDataMax7219(0xf3,0x40);
SendDataMax7219(0xf4,0x7c);
SendDataMax7219(0xf5,0x04);
SendDataMax7219(0xf6,0x04);
SendDataMax7219(0xf7,0x7c);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 6)
{
//-----------------Show 6----------------------
SendDataMax7219(0xf1,0x7c);
SendDataMax7219(0xf2,0x40);
SendDataMax7219(0xf3,0x40);
SendDataMax7219(0xf4,0x7c);
SendDataMax7219(0xf5,0x44);
SendDataMax7219(0xf6,0x44);
SendDataMax7219(0xf7,0x7c);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 7)
{
//-----------------Show 7----------------------
SendDataMax7219(0xf1,0x7c);
SendDataMax7219(0xf2,0x04);
SendDataMax7219(0xf3,0x04);
SendDataMax7219(0xf4,0x08);
SendDataMax7219(0xf5,0x10);
SendDataMax7219(0xf6,0x10);
SendDataMax7219(0xf7,0x10);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 8)
{
//-----------------Show 8----------------------
SendDataMax7219(0xf1,0x7c);
SendDataMax7219(0xf2,0x44);
SendDataMax7219(0xf3,0x44);
SendDataMax7219(0xf4,0x7c);
SendDataMax7219(0xf5,0x44);
SendDataMax7219(0xf6,0x44);
SendDataMax7219(0xf7,0x7c);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 9)
{
//-----------------Show 9----------------------
SendDataMax7219(0xf1,0x7c);
SendDataMax7219(0xf2,0x44);
SendDataMax7219(0xf3,0x44);
SendDataMax7219(0xf4,0x7c);
SendDataMax7219(0xf5,0x04);
SendDataMax7219(0xf6,0x04);
SendDataMax7219(0xf7,0x7c);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 0)
{
//-----------------Show 0----------------------
SendDataMax7219(0xf1,0x7c);
SendDataMax7219(0xf2,0x44);
SendDataMax7219(0xf3,0x44);
SendDataMax7219(0xf4,0x44);
SendDataMax7219(0xf5,0x44);
SendDataMax7219(0xf6,0x44);
SendDataMax7219(0xf7,0x7c);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 10)
{
//-----------------Show A----------------------
SendDataMax7219(0xf1,0x38);
SendDataMax7219(0xf2,0x44);
SendDataMax7219(0xf3,0x44);
SendDataMax7219(0xf4,0x7C);
SendDataMax7219(0xf5,0x44);
SendDataMax7219(0xf6,0x44);
SendDataMax7219(0xf7,0x44);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 11)
{
//-----------------Show B----------------------
SendDataMax7219(0xf1,0x78);
SendDataMax7219(0xf2,0x44);
SendDataMax7219(0xf3,0x44);
SendDataMax7219(0xf4,0x78);
SendDataMax7219(0xf5,0x44);
SendDataMax7219(0xf6,0x44);
SendDataMax7219(0xf7,0x78);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 12)
{
//-----------------Show C----------------------
SendDataMax7219(0xf1,0x38);
SendDataMax7219(0xf2,0x44);
SendDataMax7219(0xf3,0x40);
SendDataMax7219(0xf4,0x40);
SendDataMax7219(0xf5,0x40);
SendDataMax7219(0xf6,0x44);
SendDataMax7219(0xf7,0x38);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 13)
{
//-----------------Show D----------------------
SendDataMax7219(0xf1,0x78);
SendDataMax7219(0xf2,0x44);
SendDataMax7219(0xf3,0x44);
SendDataMax7219(0xf4,0x44);
SendDataMax7219(0xf5,0x44);
SendDataMax7219(0xf6,0x44);
SendDataMax7219(0xf7,0x78);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 14)
{
//-----------------Show E----------------------
SendDataMax7219(0xf1,0x7C);
SendDataMax7219(0xf2,0x40);
SendDataMax7219(0xf3,0x40);
SendDataMax7219(0xf4,0x78);
SendDataMax7219(0xf5,0x40);
SendDataMax7219(0xf6,0x40);
SendDataMax7219(0xf7,0x7C);
SendDataMax7219(0xf8,0x00);
}
//---------------------------------------------
if(Digit == 15)
{
//-----------------Show F----------------------
SendDataMax7219(0xf1,0x7C);
SendDataMax7219(0xf2,0x40);
SendDataMax7219(0xf3,0x40);
SendDataMax7219(0xf4,0x78);
SendDataMax7219(0xf5,0x40);
SendDataMax7219(0xf6,0x40);
SendDataMax7219(0xf7,0x40);
SendDataMax7219(0xf8,0x00);
} 
}




void SendDataMax7219(int HighByte,int LowByte)
{
  //---------------Send High Byte--------------
  for(int i=7;i>-1;i--)
  {
   if(bitRead(HighByte, i)== HIGH)
   {
   digitalWrite(DataOUT,HIGH);
   //delay(1);
   digitalWrite(CLK,LOW);
    //delay(1);
   digitalWrite(CLK,HIGH);
   //delay(1);
    digitalWrite(CLK,LOW);
   
  
   }
   if(bitRead(HighByte, i)== LOW)
   {
   digitalWrite(DataOUT,LOW);
   //delay(1);
   digitalWrite(CLK,LOW);
    //delay(1);
   digitalWrite(CLK,HIGH);
   //delay(1);
    digitalWrite(CLK,LOW);
   }

  }
  //------------------------------------------
  //---------------Send Low Byte--------------
  for(int i=7;i>-1;i--)
  {
   if(bitRead(LowByte, i)== HIGH)
   {
   digitalWrite(DataOUT,HIGH);
   //delay(1);
  digitalWrite(CLK,LOW);
    //delay(1);
   digitalWrite(CLK,HIGH);
   //delay(1);
    digitalWrite(CLK,LOW);
   }
   if(bitRead(LowByte, i)== LOW)
   {
   digitalWrite(DataOUT,LOW);
   //delay(1);
 digitalWrite(CLK,LOW);
    //delay(1);
   digitalWrite(CLK,HIGH);
   //delay(1);
    digitalWrite(CLK,LOW);
   }
   
  }
  //----------------------------------------
  //--------Load 16 bit number in MAX7219---
   //delay(1);
   digitalWrite(Load,LOW);
   //delay(1);
   digitalWrite(Load,HIGH);
   //delay(1);
    digitalWrite(Load,LOW);

  //----------------------------------------
}