I am not a C programmer but it looks exactly like a programming language for IBM 
industrial robots I learned 17 years ago AML2.

Could the problem be the double definition of delay? or do you need this far a 
forward reference?

TTYL
Peter van Hoof


----- Original Message ----- 
From: "rumpelteazer666" <rumpelteazer666@gmail.com>
To: <piclist@mit.edu>
Sent: Thursday, May 12, 2005 8:27 PM
Subject: [PIC] strange problem


> I've tried to find something useful on the datasheet,tutorials and pic
> books, i've tried to write it both in c and in assembler, you never know,
> but the problem is always there. I don't know if i can reasonably expect
> someone to look at the code and do the thinking for me, but this is my last
> hope, so i will try. The code in the while(1) block should just send a
> square
> wave to PORTA, but i put a while(B0!=1); before it. What i think it should
> do is, it stays still until i press the button (putting a 1 on the first bit
> of PORTB) and then start to play the squarewave, forgetting about the
> button. Well, i put it on the breadboard and i found that actually it plays
> the wave only as long as i keep the button pushed down. If i let a 0 on
> PORTB it stops again, waiting for a new 1. So somehow it goes back to the
> first while, how's that? :-/
>
> ps. i know the code is useless and weird, it was a starting point to develop
> what i wanted to be my first pic project, but then i got blocked on my first
> steps by this thing.
>
>
> #define __16f628
> #include <pic/pic16f628.h>
>
> typedef unsigned int config;
> config at 0x2007 __CONFIG = _HS_OSC &
> _WDT_OFF &
> _PWRTE_ON ;
>
> BIT_AT(PORTB_ADDR,0) B0;
>
> void delay(void);
>
> unsigned char a,d1;
>
> void main(void){
>
> CMCON=7;
> TRISA=0;
> TRISB=255;
>
> a=150;
> PORTA=0;
>
> while(B0!=1);
> while(1){
> PORTA=1;
> delay();
> PORTA=255;
> delay();
>
> }
> }
>
> void delay(void){
> _asm
> movlw _a
> movwf _d1
> Delay_0:
> decfsz _d1, f
> goto Delay_0
> nop
> nop
>
> _endasm;
> }
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> 


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