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ref_flg Reference eventflag status
iref_flg Reference eventflag status (handler only)
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ER ercd = ref_flg( ID flgid, T_RFLG *pk_rflg );
ER ercd = iref_flg( ID flgid, T_RFLG *pk_rflg );
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ID flgid ID number of the target eventflag
T_RFLG *pk_rflg Pointer to the packet to which eventflag status is returned
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ER ercd Terminated normally (E_OK)
T_RFLG *pk_rflg Pointer to the packet to which eventflag status is returned
Contents of pk_rflg
typedef struct t_rflg{
ID wtskid +0 2 Reception waiting task ID
FLGPTN flgptn +2 4 Current eventflag bit pattern
} T_RFLG;
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.include mr100.inc
ref_flg FLGID, PK_RFLG
iref_flg FLGID, PK_RFLG
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FLGID ID number of the target eventflag
PK_RFLG Pointer to the packet to which eventflag status is returned
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Register name Content after service call is issued
R0 Error code
R2 ID number of the target eventflag
A1 Pointer to the packet to which eventflag status is returned
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This service call returns various statuses of the eventflag indicated by flgid.
wtskid
Returned to wtskid is the ID number of the task at the top of a waiting queue (the next task to be dequeued). If no
tasks are kept waiting, TSK_NONE is returned.
flgptn
Returned to flgptn is the current eventflag bit pattern.
If this service call is to be issued from task context, use ref_flg; if issued from non-task context, use iref_flg.