Hi all,

Thanks for the help on my previous issue. I am trying to implement the CONFIG statement at the start of my code and it seems no matter which way I try to use it it gives me a mass load of errors/warnings when I try to build. Anyone have any ideas where I should start? I'm using Hi-tech C Compiler and MPLAB to do the programming.

Thanks a bunch.

 

How about posting the first few lines of your code? Use the code tags.

John

 

Sounds fair. lol. So I've just recently started playing with PIC's and have created a simple blinking LED program.

#include <htc.h>
#define _XTAL_FREQ 4000000
//CONFIG??
main(){
	int i;
	PORTA = 0x00;		// PORTA low
	CMCON0 = 0x07;		// turn off comparators
	ANSEL = 0x00;		// turn off ADC
	TRISA = 0x00;		// RA1 as output
		while(1 == 1){
			if(RA1 == 0){
				RA1 = 1;
			}
			else{
				RA1 = 0;
			}
			for(i = 0; i <= 127; i++){
					__delay_ms(2);
					CLRWDT();
			}
		}
}

So basically where the '//CONFIG' is I have been trying a number of different ways to change the oscillator, wdt, MCLR and all that fun stuff. I've tried a number of different statements that I have seen in use here but I guess I'm just not totally sure on what format to use, since nothing seems to have an impact, or there are alot of errors during building.

Thanks.

edit:
This is the most recent statement I have used
__CONFIG(INTIO & WDTDIS & MCLRDIS & UNPROTECT)

And I get about 30 errors/ warnings (every line+), and the code works flawlessly without.

 

What processor are you using? Have you tried just setting the config in MPLAB? I use Assembly, where the config can be written individually or in hex, like this:

	__CONFIG   _MCLRE_ON & _CP_OFF & _WDT_OFF & _IntRC_OSC

; __CONFIG 0FFA

John

 

edit:
This is the most recent statement I have used
__CONFIG(INTIO & WDTDIS & MCLRDIS & UNPROTECT)

And I get about 30 errors/ warnings (every line+), and the code works flawlessly without.

Looks correct to me, except that I don't see the semicolon at the end of the line; that could be the cause of the exagerate number of errors
On a side note, if you disable the WatchDog Timer, you don't need to take care of it in your code.
Hope this helps.

 

Looks correct to me, except that I don't see the semicolon at the end of the line; that could be the cause of the exagerate number of errors
On a side note, if you disable the WatchDog Timer, you don't need to take care of it in your code.
Hope this helps.

Haha amazing. Thanks alot, of course the semi-colon. Really appreciate the help. I was reading from the Hi-tech C PIC manual and was trying to follow the expression there, where there was no ;.

And right, I understand now that I can remove the CLRWDT() command once it is disabled.

Again, thanks for your time.