#locate usage

[Carl Tashian]

I'm using #locate to reserve space for variables.. and I wonder, does #locate know the size of the variable being located? Can it prevent entire structs from being clobbered, or does it just handle the built-in types?

Thanks,
Carl
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This message was ported from CCS's old forum
Original Post ID: 1316

[Tomi]

The size of the type is reserved.
A sample list:
typedef struct {
char c;
float f;
int16 i;
} struct1;

char c1,c2;
char i;
struct1 y;
#locate y = 0x22 // the struct is 0x22-0x28 (last byte)

c1=c2=0;
i = 10;
y.i = 20;

.................... c1=c2=0;
0019: CLRF 2A
001A: MOVF 2A,W
001B: MOVWF 29 // c1 var. @0x29
.................... i = 10;
001C: MOVLW 0A
001D: MOVWF 2B
.................... y.i = 20;
001E: CLRF 28 // the last element (int16) of the struct
001F: MOVLW 14
0020: MOVWF 27


:=I'm using #locate to reserve space for variables.. and I wonder, does #locate know the size of the variable being located? Can it prevent entire structs from being clobbered, or does it just handle the built-in types?
:=
:=Thanks,
:=Carl
___________________________
This message was ported from CCS's old forum
Original Post ID: 1321