Header file error in MPLAB

betwixt said:

I might be wrong but I think the syntax for defining pins in XC8 would be like:
TRISDbits.RD0 = 0;
I am assuming you have #defined the pins beforehand.
I do not have the compiler with me at the moment to check the syntax.

Brian.

Click to expand...

//======================== chip config ======================//
                 		    
#pragma config FOSC = HS
#pragma config FCMEN = OFF
#pragma config IESO = OFF        
#pragma config PWRT = OFF        
#pragma config BOR = OFF        
#pragma config VREGEN = OFF 
#pragma config WDT = OFF    
#pragma config WDTPS = 32768     
#pragma config CCP2MX = OFF     
#pragma config PBADEN = OFF      
#pragma config LPT1OSC = OFF         
#pragma config MCLRE = ON            
#pragma config STVREN = ON       
#pragma config LVP = OFF     
#pragma config ICPRT = OFF       
#pragma config XINST = OFF       
#pragma config DEBUG = OFF
#pragma config WRTD = OFF

#pragma code main = 0x50

//============================================= header file =============================================//
#include "PORT_direction.h"
#include <p18f4550.h>
#include <delays.h> 
//#include <stddef.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <pwm.h>
//#include <timers.h>

kushal nandanwar said:

Header file code

Code:

// TRISE=0;
 //  TRISC=0;				
  // LATC=0;

//  Port B as output port

 TRISDbits.TRISD0=1;
 TRISDbits.TRISD1=1;
 TRISDbits.TRISD2=0;
 TRISDbits.TRISD3=0;
 TRISDbits.TRISD4=0;
 TRISDbits.TRISD5=0;
 TRISDbits.TRISD6=0;
 TRISDbits.TRISD7=0;

 TRISCbits.TRISC2=1;
 TRISCbits.TRISC1=1;

 TRISCbits.TRISC0=0;           // LED
 TRISBbits.TRISB1=0; 
 TRISBbits.TRISB5=0;

Click to expand...

void init_pins(void){
// TRISE=0;
 //  TRISC=0;				
  // LATC=0;

//  Port B as output port

 TRISDbits.TRISD0=1;
 TRISDbits.TRISD1=1;
 TRISDbits.TRISD2=0;
 TRISDbits.TRISD3=0;
 TRISDbits.TRISD4=0;
 TRISDbits.TRISD5=0;
 TRISDbits.TRISD6=0;
 TRISDbits.TRISD7=0;

 TRISCbits.TRISC2=1;
 TRISCbits.TRISC1=1;

 TRISCbits.TRISC0=0;           // LED
 TRISBbits.TRISB1=0; 
 TRISBbits.TRISB5=0; 
}

betwixt said:

I might be wrong but I think the syntax for defining pins in XC8 would be like:
TRISDbits.RD0 = 0;...

Click to expand...

kushal nandanwar said:

This method work only when I define .C file but not for .h

Click to expand...

//this works for your code
#include <p18f4550.h>
#include "PORT_direction.h"

//this is not working for you
#include "PORT_direction.h"
#include <p18f4550.h>

kushal nandanwar said:

My new problem ,

If I define one variable in one.c file, how can I access this variable in second.c file

I am using C18 compiler.

Click to expand...

xenos said:

of course you need to do this:

Code:

//this works for your code
#include <p18f4550.h>
#include "PORT_direction.h"

in stead of this:

Code:

//this is not working for you
#include "PORT_direction.h"
#include <p18f4550.h>

or include pic header inside your header file
(because you cannot use a name before you define it!)

Click to expand...

This feature is not implemented in compiler. There may be a definition of external symbol 'SENSE1' found instead of its declaration

Click to expand...

Error [1521] This feature is not implemented in compiler. There may be a definition of external symbol 'SENSE1' found instead of its declaration

Click to expand...

SkyHigh said:

static tells the C Compiler that the variable will have lifespan throughout, until the program ends.

extern tells the C Compiler that the variable or function is defined in another source file.

Click to expand...

betwixt said:

Of course, just say it's 'extern' as you would with a variable.

Brian.

Click to expand...

kushal nandanwar said:

But I do't know why it's not working.

Click to expand...