[PIC] PIC16f1716 - I2C Initialization problem

#pragma config FOSC = INTOSC    // Oscillator Selection Bits (INTOSC oscillator: I/O function on CLKIN pin)#pragma config WDTE = OFF       // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable (PWRT disabled)
#pragma config MCLRE = ON       // MCLR Pin Function Select (MCLR/VPP pin function is MCLR)
#pragma config CP = OFF         // Flash Program Memory Code Protection (Program memory code protection is disabled)
#pragma config BOREN = ON       // Brown-out Reset Enable (Brown-out Reset enabled)
#pragma config CLKOUTEN = OFF   // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)
#pragma config IESO = ON        // Internal/External Switchover Mode (Internal/External Switchover Mode is enabled)
#pragma config FCMEN = ON       // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is enabled)


// CONFIG2
#pragma config WRT = OFF        // Flash Memory Self-Write Protection (Write protection off)
#pragma config PPS1WAY = ON     // Peripheral Pin Select one-way control (The PPSLOCK bit cannot be cleared once it is set by software)
#pragma config ZCDDIS = ON      // Zero-cross detect disable (Zero-cross detect circuit is disabled at POR and can be enabled with ZCDSEN bit.)
#pragma config PLLEN = ON       // Phase Lock Loop enable (4x PLL is always enabled)
#pragma config STVREN = ON      // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset)
#pragma config BORV = LO        // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config LPBOR = OFF      // Low-Power Brown Out Reset (Low-Power BOR is disabled)
#pragma config LVP = OFF        // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming)


// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.


#include <stdio.h>
#include <stdlib.h>
#include <xc.h>
#include "I2C_header.h"
//#include <xc8.h>
#define _XTAL_FREQ 16000000


void led_blink(void);


void main(void) {
    
    OSCCON=0x78;    // Setting oscillator frequency to 16MHz
    TRISC=0b11111100; // 0-LED 1-Buzzer 2-Temp_ADC_in 3,4-I2C 
    TRISB=0b11100000; // 0-4:Seven_segment_cathode 5:PullUp_switch 
    ANSELA=0;   // Turning off the GPIO sharing for ADC
    ANSELB=0;   // Turning off the GPIO sharing for ADC
    ANSELC=0;   // Turning off the GPIO sharing for ADC
    RC0 = 0; //Makes 0th bit of PORTB at Logic Low
    RC1=0;


    
    I2C_Master_Initialize();
    
      while(1)
      {
          if(PORTBbits.RB5==0)  // Switch is connected to B5
          {
            //led_blink();             
            SSP1CON2bits.SEN = 1;  // should generate I2C Start condition
          }
          LATC0=SSP1CON2bits.SEN;  // LED is connected to C0
      }
   return;
}

void I2C_Master_Initialize( void)
{
    TRISCbits.TRISC3=1;
    TRISCbits.TRISC4=1;
    ANSELCbits.ANSC3=0;
    ANSELCbits.ANSC4=0;
    
    //Interrupt Enable
    INTCONbits.PEIE=1;
    PIR1bits.SSP1IF=0;
    PIE1bits.SSP1IE=1;
    
    SSP1CON1bits.SSPEN=1;
    SSP1CON1bits.SSPM=0b1000;
    SSP1STATbits.CKE=0;
    SSP1STATbits.SMP=1;
    SSP1CON2=0;
    SSP1ADD=0x27;
}