Hello,
i'd like to know how much space I need in the Userstack Area. I'd cleard the UserStack-Section in start_v2.a66. In my 'main.c' I'd like to have a function which shows me the Userstack. Therefore I have to know where the UserStack is located.
So how could I get access to ?C_USRSTKBOT & ?C_USRSTKTOP in 'main.c'? (I could look in the Memory Map & type in the numbers by hand, okay. But automaticaly it would be nice)
/Koarl
Why don't you simply make stack top an bottom public in START_V2.a66:
PUBLIC stack_top PUBLIC stack_bottom ?C_USERSTACK SECTION DATA PUBLIC 'SDATA' ?C_USRSTKBOT: stack_bottom: DS USTSZ ; Size of User Stack ?C_USERSTKTOP: stack_top: ?C_USERSTACK ENDS
And declare extern where you use them:
extern unsigned int stack_top; extern unsigned int stack_bottom;
Sauli
Hello Sauli, thank you for the tip it works!
I'm not so familar with the assembler.
Only for better understanding the hole thing, do you know why I cant get acces to the '?C_USRSTKBOT' Label? (which is in the original start_V2.a66 'public')
I guess it has something to do with the question mark in the label. You cannot have a question mark in any names in C code. There is a hint somewhere in the Keil application notes that you could use underscore in C code to reference a name containing a question mark, but trying to use _C_USRSTKBOT to access ?C_USRSTKBOT does not work. I am sure that Keil people could explain this if they wanted.