[SOLVED] problem with serial communication using MATLAB and dspic30f2020

#include<libpic30.h>
#include<p30f2020.h>
#include "delay.h"

_FOSC(CSW_FSCM_OFF & OSC2_IO & HS );
_FOSCSEL(PRIOSC_PLL);
_FWDT(FWDTEN_OFF);
_FGS(CODE_PROT_OFF);
_FPOR(PWRT_OFF);

void initUart(void);
void putHex(int x); 

void _ISR _U1TXInterrupt(void);
void _ISR _U1RXInterrupt(void);

int x,rx_flag=0;
int adc_index,AN[200];

void initUart(void){
    
    U1MODEbits.UARTEN=  0;    //UART1 Disabled
    U1MODEbits.ALTIO =  1;   // Use alternate IO
    U1MODEbits.BRGH =   0;    //Use standard Bit rate
    U1MODEbits.PDSEL =  0;;    //8 bit no parity
    U1MODEbits.STSEL =  0;    //One stop bit
    
    IPC2bits.U1RXIP =5;//2;//Set UART1 RX Interrupt Priority 0-7, 0=disabled 7=Highest
    IPC2bits.U1TXIP =4;//TX Priority 2
    IFS0bits.U1RXIF =0; //Set UART1 RX Interrupt Flag=0
    
    U1STAbits.UTXISEL0 = 0; 
    U1STAbits.UTXISEL1 = 0; 
    U1STAbits.UTXBRK  = 0; 
    U1STAbits.URXISEL = 0;
    
    //U1BRG = (FCY/16*Baud Rate)-1 WITH BRGL
    //FCY = FCY = Primary Osc X 2 WITH PLL 
    U1BRG = 16; // 115200 baud  16 MHz Crystal BRGL
    
    U1MODEbits.UARTEN=  1;    //UART1 Enabled
    IEC0bits.U1RXIE = 0;//Enable UART1 Receiver Interrupt
    IEC0bits.U1TXIE = 1;//Enable UART1 Tx Interrupt
    U1STAbits.UTXEN   = 1;   // Enable transmit    
} 
 
void initialiseADC (void)
{
//This function initializes the ADC for a dsPIC30F2020
    // ADCON: ADC Control Register 1				
     ADCONbits.ADCS        = 3;  	//011 = FADC/10									
     ADCONbits.SEQSAMP   = 0;       // Simultaneous Sampling 
     ADCONbits.ORDER     = 0;       // Even channel first 
     ADCONbits.FORM      = 0;       // Output in Integer Format   
     ADCONbits.GSWTRG    = 0;       // global software trigger bit
     ADCONbits.ADSIDL    = 0;       // Operate in Idle Mode 
 
     ADPCFG = 0b1111111111111110;    // AN0-AN5 all analog inputs
                                     //Port bits that are to be set as analog inputs should have their ADPCFG
                                     //bit cleared
 
     ADSTAT = 0;     // Clear the ADSTAT register 
          
     //Settings for AN1 AN0
     ADCPC0bits.TRGSRC0 = 1;   // source is individual software trigger for AN1 AN0
     ADCPC0bits.SWTRG0 = 0;    // When set to 1 will  start conversion of AN1 and AN0
     ADCPC0bits.PEND0 = 0;     // goes to 1 on conversion pending & 0 on  conversion complete        
     ADCPC0bits.IRQEN0 = 0;    // disable the interrupt
     ADCPC0bits.IRQEN0 = 0;    // interrupt is not generated at end of conversion
 
     ADCONbits.ADON = 1; //Start the ADC module
 	
}

void putHex(int x) { 
	while(U1STAbits.UTXBF==1) continue;  //Checks if Buffer is Full and waits for it to have one    
                                                                 location empty 
		U1TXREG=x;
        
    return;     //Loops till Transmission is over 
}   

void __attribute__((__interrupt__, __auto_psv__)) _U1TXInterrupt(void){
	//TXflag=1;
	_U1TXIF=0; //clear RX Interrupt Flag

}

void convert_ch1(void)
{   
    while(adc_index<200)
    {
        ADCPC0bits.SWTRG0 = 1;     //start conversion of AN0 and store 200 samples
        while(ADCPC0bits.PEND0){} //conv pending becomes 0 when conv complete
        AN[adc_index]= ADCBUF0 >> 2;
        adc_index++;
	}		
    adc_index=0;
}

int main()
{
  __delay32(3200);
  //Delay();
 _TRISB0 = 1;
 adc_index=0; 
 
 initUart();
 initialiseADC();  
 __delay32(3200);
 
 convert_ch1();
  
 while(adc_index<200)
  {
    putHex(AN[adc_index]);
    adc_index++;
  }
 
 return(0);
}

clc;
clear all;

s=serial('COM3');
set(s,'BaudRate',115200,'InputBufferSize',400);
fopen(s);
s;

disp(fread(s));
k=get(s,'ValuesReceived');
disp(k);
disp(' bytes received:');

fclose(s);
delete(s);
clear s;