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|用戶手冊(cè)[01/1997]
文件頁數(shù)： 74/96頁
文件大?。?/td> 265K
代理商： RX78K4
CHAPTER 4 RX78K/IV SYSTEM CALL LIST
65
4.6.1
act_cyc (Activate Cyclic Handler)
iact_cyc (Activate Cyclic Handler for Interrupt)
[Function]
Controls activation of a cyclic handler.
[Remarks]
Changes the activation state of the cyclic handler shown by cyhid to the state specified by the cyhact. The
specific method of specifying cyhact is as follows:
0
0
0
0
0
0
7
6
5
4
3
2
1
0
bit
Fixed to 0
0 : TCY_OFF (Not started)
1 : TCY_ON (started)
1 : TCY_INI (Initializes the cycle time)
cyhact = (TCY_OFF || TCY_ON) | [TCY_INI]
“cyhact = TCY_OFF” means that the cyclic handler has temporarily stopped. During this time, the handler is
not started.
“cyhact = TCY_ON” sets the activation state to ON, independently of the elapsing of the cycle. The specified
cycles are counted even while the activation state is OFF; therefore, the time from execution of the “act_cyc
(iact_cyc)” system call until the first execution of the cyclic handler is not constant.
“cyhact = (TCY_ON | TCY_INI)” not only sets the activation state to ON but at the same time clears the cyclic
handler counter. Therefore, the initial handler startup takes place exactly after the specified number of cycles
has elapsed since the “actcyc (iact_cyc)” system call.
A cyclic handler cannot be created or destroyed dynamically. A cycle handler is registered with the
configurator.
[System call ID number]
act_cyc = 26
[Parameter]
cyhid (Cyclic Handler Identifier)
Cyclic handler ID (HCB top address)
- 24 bits (large model)
- 16 bits (small model)
- 8 bits
cyhact (Cyclic Handler Activation)
Cyclic handler activation state
[Return parameter]
E_OK
Normal termination
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