Call of function - compilation problem

gaminn — Thu, 29 Oct 2020 09:08:46 GMT

Hello,

My MCU is HCS08QG8 and I use CodeWarriror 5.9.0.

I have a wait() function that I call in two files (main.c in main() function and handlers.c in handler() function). My problem is that wait() function called in handlers.c doesn't work. If i look at assembly code and search for assembly of both calls (they are the same - wait(209), I can see for the call in main.c:

wait(209); // this is called in main file

Assembly of this call:

LDA #0xD1

JSR 0xEF91

And for handlers.c file:

wait(209); // this is called in handle file

Assembly of this call:

LDX #0xD1

CLRH

JSR 0xEF91

My wait() function looks like:

void wait(unsigned char ms) {  unsigned char i;  for(i = 0 ; i < ms ; i++) {    wait_1ms();  }  }

Assembly (only beginning):

PSHA

PSHH

TSX

CLR ,X

.......

So, I can see that parameter ms of wait() for the call in main.c is stored in register A, but for the call in handlers.c it is stored in register X. And wait() function is assembled in the way that register A is considered as the place where the ms parameter is located (and register X is the variable called i in wait()).

What can cause that compiler compiles my code in such a way (a way that doesn't work in handlers.c).

Re: Call of function - compilation problem

CrasyCat — Mon, 16 Mar 2009 20:28:27 GMT

Hello

Please make sure you have a prototype for function wait in module handlers.c prior to implementation of handler().

CrasyCat

Re: Call of function - compilation problem

gaminn — Mon, 16 Mar 2009 20:39:54 GMT

Oh, stupid mistake...Sorry.

Thank you

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Call of function - compilation problem

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Re: Call of function - compilation problem