Outline

Reference semaphore state.

C format

ER ref_sem ( ID semid, T_RSEM *pk_rsem );

Assembly format

MOVW BC, #LOWW(_pk_rsem) MOV A, #semid CALL !!_ref_sem

Parameter(s)

I/O	Parameter	Description
I	ID semid;	ID number of the semaphore to be referenced.
O	T_RSEM *pk_rsem;	Pointer to the packet returning the semaphore state.

Explanation

Stores semaphore state packet (such as existence of waiting tasks) of the semaphore specified by parameter semid in the area specified by parameter pk_rsem.

Note For details about the semaphore state packet, refer to "12.5.2 Semaphore state packet".

Return value

Macro	Value	Description
E_OK	0	Normal completion.