#include <FastLED.h>
#include <LiquidCrystal.h>
#include <Keypad.h>  
#include <EEPROM.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

const uint8_t ROWS = 4;       // number of rows in the keyboard
const uint8_t COLS = 4;       // number of collumns in the keypad
char keys[ROWS][COLS] = {     // the keypad charater matrix (there are 4 nul keys)
  { 1, 2, 3, '>' },           // top row numbers 1 to 3 and a null
  { 4, 5, 6, '<' },           // 2nd row numbers 4 to 6 and a null
  { 7, 8, 9, 'S' },           // 3rd row numbers 7 to 9 and a null
  { 'R', ' ', 'D', 'U' }      // 4th row number 0, a null D for delete and C for clear
};  
                              // note that American Standard Code for Information Interchange (ASCII)
                              // is used for zero, as zero would be interpreted as no key pressed


uint8_t colPins[COLS] = { A3, A2, A1, A0 };     // Pins connected to collumns 1 to 4
uint8_t rowPins[ROWS] = { 5, 4, 3, 2 }; // Pins connected to rows 1 to 4

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS); 
          // make the keyboard map used by keyboard.h from the above information



byte S1[]={0xC0,0x00,0x02,0x08,0x82,0x8C,0x03,0x00};        //send 1 write
byte S2[]={0xC0,0x00,0x02,0x0A,0x83,0x9F,0x01,0x00,0x03,0xD6};   //send 2 write
byte S3[]={0xC0,0x00,0x02,0x08,0x82,0x9F,0x03,0xD4};        // send 3 read and weite
byte R1[]={0xC0,0x01,0x02,0x0B,0x82,0x9F,0x00,0x08,0x00,0x03,0xDE};        // receive  read and write
byte S4[]={0xC0,0x00,0x02,0x08,0x82,0x86,0x03,0xCD};        //send 1 read
byte str[]={"                "};

byte testmess[]={"test message"};
byte rc;
int   value;
byte  recmess[]="                                                                    ";
int count;
unsigned long serial;
int length;
int par;





void setup() 
{
  lcd.begin(16,2);
  lcd.setCursor(0,0);
  //Serial.begin(1200,SERIAL_8E2); // open the serial port at 9600 bps:
 
  Serial.begin(9600);
  //lcd.print("initial test");
}


void loop() 
{
    lcd.clear();
    
    int par=0;

    for(int i=0;i<7; i++)
    {
     par=par^S1[i];
      lcd.print(par,HEX); 
    }

    S1[7]=par;

    



    lcd.setCursor(0,1);
    for(int i=0;i<=7; i++)
    {

      lcd.print (S1[i],HEX);
    }
    delay(500);

}

/*
{
  count=0;
  Serial.write(S1,sizeof(S1));
  delay (500);

 Serial.write(S2,sizeof(S2));
  delay (500);

 Serial.write(S3,sizeof(S3));
  delay (500);

// only for test
 Serial.write(R1,sizeof(R1));
  delay (500);

// end of test code



  length=Serial.available();
  lcd.setCursor(0,0);
  count=0;
lp:
rc=Serial.read();
recmess[count]=rc;
count++;
if (Serial.available()>0) goto lp;

/*
serial=0;
lcd.print("S.No ");
for (count=length-10;count<=length-7;count++)
{
  rc=recmess[count];
  serial=serial*256+rc;
  //lcd.print(rc);
}
lcd.print(serial);
lcd.setCursor(0,1);
*/
/*
lcd.print("M");
lcd.print(recmess[length-6],HEX);
lcd.print(" Y");
lcd.print(recmess[length-5],HEX);
lcd.print(" T");
lcd.print(recmess[length-4],HEX);
if (recmess[length-3]==161) lcd.print(" VDO");
else
{
  lcd.print(" P ");
  lcd.print(recmess[length-3],HEX);
}

lcd.print ("Division ratio");
lcd.setCursor(0,1);
lcd.print("    is ");
lcd.print (recmess[length-4],HEX);
lcd.print(":1");

delay(500);            // delay 200 milliseconds 
}*/