/* Main.ino file generated by New Project wizard
 *
 * Created:   Mon Dec 25 2023
 * Processor: Arduino Uno
 * Compiler:  Arduino AVR (Proteus)
 */

#include "Arduino_Uno_Driver.h"
#include "I2C_Driver.h"
#include "RTC_DS1307.h"
#include <stdint.h>
#include <stdio.h>

/* 
   Calculation of Ten Power based on the passing int parameter
   
   Params :

   power - int value of the power  
*/
int TenPower(int power)
{
   if(power == 0)
      return 1;
   else
      return (10 * TenPower(power-1));
}

/* 
   Passing string value to Writing it on LCD display using I2C

   Param 1 :  Address of starting index of char array 
*/
void WriteToDisplay(uint8_t* data)
{
  while(*data != '\0')
  {
      Write_I2C_TrasmitData(*data, LCD1602_SLA_ADDR, false);
      data++;
  }
}

/* 
   Convert int to string value and Writing to display

   Param 1 :  Passing display int number 
*/
void WriteNumberToDisplay(int data)
{
  int index = 0;  char displayData[10]; 
  int actualData = data;
  while(data > 0)
  { 
    int temp = (data % 10);
    if(index > 0)
    {
      unsigned int length = (unsigned int)index;
      while(length > 0)
      {
        int prevIndex = length - 1;
        displayData[length] = displayData[prevIndex];
        length--;
      }
      displayData[length] = temp + '0';
    }
    else
    {
      if(actualData < 10)
      {
        displayData[index] = '0';
        index = index + 1;
      }
      displayData[index] = temp + '0';
    }
    data = data / 10;
    index++;
  }

  if(actualData == 0)
  {
    displayData[index] = '0';
    index++;
    displayData[index] = '0';
    index++;
  }

  displayData[index] = '\0';
  WriteToDisplay(displayData);
}

void setup()
{
  // Timer/Counter 0 Register 
  uint8_t *pTimer0_Reg = (uint8_t *)TIMSK0REG;
  
  I2C_Init(I2c_PreScalar[0], 0x48);
  I2C_Config_LCD();      // Setting 16x2 LCD Configuration using I2C 
  Set_Lcd_Cursor(0,0);   // First parameter Column and Second parameter Row 

  while(1)
  {

    Set_Lcd_Cursor(0,0);
    WriteToDisplay("Time - ");
    WriteNumberToDisplay(readHours());
    WriteToDisplay(":");
    WriteNumberToDisplay(readMins());
    WriteToDisplay(":");
    WriteNumberToDisplay(readSecs());

    Set_Lcd_Cursor(0,1);
    WriteToDisplay("Date - ");
    WriteNumberToDisplay(readDates());
    WriteToDisplay("/");
    WriteNumberToDisplay(readMonths());
    WriteToDisplay("/");
    WriteNumberToDisplay(readYears() % 100);
  
    for(volatile int i=0; i<= 1000; i++);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  

 
}