Hi All, Am trying to re-write a code in PLM51 to embedded C. There is a statement in PLM51 as below.
DECLARE TASK(17) STRUCTURE(PNTR BYTE,STATUS BYTE,DELAY WORD); DECLARE DELAY_HEAD BYTE AT (.TASK(0).PNTR); //ERROR LINE//
What i have understood from this is-- DELAY_HEAD is a byte variable which resides at the same location as that of TASK(0).PNTR.(From the PLM51 manual)
I have rewritten the same into C as below.
struct tsk { unsigned char PNTR ; unsigned char STATUS; unsigned int DELAY; }TASK[17]; unsigned char DELAY_HEAD _at_ &TASK[0].PNTR ;
But its giving error 221:non-constant case/dim expression. Plss help..!!
When the linker say CANNOT FIND SEGMENT,does it mean that its searching for a .c file named CONTROL1????
Of course not. It means exactly what it says: it's looking for a segment with that name. How that segment got to have that particular name is up to you to find out. It is spelled out in the documentation, including how you can change it.
hence i need to declare it
Yes.
as
extern unsigned int code CONTROL1 = 0xFFFF;
No. That's a definition, not a declaration. If you don't know even that difference, you're in no position to be tinkering with the linker like you're trying to.