Embedded C program code

[rajathirajan]

Hi ..... am using MPLAB V8 and Hitech C Compiler , I dont know how to configure fuses in the programs, and i also write the code in serial program but i con't get out from that program can any send the sample program...or pls correct and send the program..

#include<pic.h>
__CONFIG( HS & WDTDIS );
void main()
{
unsigned char mybyte[]="WELCOME";
unsigned int i=0;
TXSTA=0x24;
SPBRG=64;
SPEN=1;
while(1)
{
TXREG=mybyte;
while(TXIF==0);
i++;
}
}

 

[vinodstanur]

Can try this code:

#include<htc.h>
#define _XTAL_FREQ 20e6
__CONFIG(0x3F3A);
void uart_init()
{
    TRISC6=0;
    TXSTA=0b00100100;    //CHECK THE DATA SHEET FOR TXSTA
    RCSTA=0b10010000;    //SEE THE DATA SHEET FOR RCSTA
    BRGH=0;            //  low baud rate 
    SPBRG=129;      //baud rate 2400
}

void interrupt_enable()
{
    GIE=1;
    PEIE=1;
    RCIE=1;
}

void txd(char write_data)
{
    TXREG = write_data;
    while(!TRMT);
}

void interrupt UART()  //interrupt service routine
{    
    PORTD = RCREG; //simply to get the received ASCII on PORTD
}



main()
{      
        TRISD=0;
        uart_init();
        interrupt_enable();
	txd('W');   
	txd('E');  
	txd('L');    
	txd('C');   
        txd('O');
	txd('M');
	txd('E');  //DISPLAY "WELCOME" at starting 
      
        while(1);    //WAITING FOR INTERRUPT (SEE RESULT ON PORT D)
    
}

---------- Post added at 11:17 ---------- Previous post was at 10:57 ----------

to configure fuse with in code,
just follow this steps:

1> In MPLAB, >> configure >> Configuration bits
2> Select required configuration and get the 16 bit code corresponding to that
3>Now put the code in your program as below.

__CONFIG(0x3F3A); //here the configuration bits value is 3f3a in hex[CODE]