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).
