參數(shù)資料
型號(hào): RX78K4
英文描述: 78K/IV Series Real-Time OS Fundamental | User's Manual[01/1997]
中文描述: 78K/IV系列實(shí)時(shí)操作系統(tǒng)的基本|用戶(hù)手冊(cè)[01/1997]
文件頁(yè)數(shù): 54/96頁(yè)
文件大?。?/td> 265K
代理商: RX78K4
CHAPTER 4 RX78K/IV SYSTEM CALL LIST
45
4.2.4
cwai_flg (Wait and Clear Eventflag)
[Function]
Waits for an event flag (with clear).
[Remarks]
Waits until an event flag indicated by flgid is set to 1. The event flag is cleared when it has been set and the
task has been released from the WAIT state.
If “set_flg” is issued when two or more tasks are waiting for an event flag, the tasks are sequentially woken up
starting from the one placed at the top of the queue. However, the tasks following the one in the WAIT state
by “cwai_flg” cannot be woken up because the event flag is cleared.
[System call ID number]
cwai_flg = 13
[Parameter]
flgid (Eventflag Identifier)
Event flag ID (Eventflag top address)
- 24 bits (large model)
- 16 bits (small model)
[Return parameter]
E_OK
Normal termination
[Assembler format]
[Large model]
MOV
MOVW
MOV
CALLT
[Small model]
MOV
MOVW
CALLT
bnk0_b, #13
bnk0_up, #flgid
bnk0_d, #flgid
[40H]
:
bnk0_b, #13
bnk0_up, #flgid
[40H]
:
C register = return parameter
C register = return parameter
[C format]
ret = cwai_flg (flgid);
char
*flgid;
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