AioGetCntComparisonMode

Function

Retrieves the counter operation as the comparison count match occurred.

Format

Ret = AioGetCntComparisonMode ( Id , CntChannel , CntMode )

Parameters

Id [ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the ID retrieved from AioInit.

CntChannel [ C, C++ : short ] [ Python : ctypes.c_short ]
Sets the channel of counter.

CntMode [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the variable that stores the operation mode.
CntMode has the following meanings in bit.

Operation mode	Macro	Value
Preset count value load	CNT_LOADPRESET	00000001H
Comparison count value load	CNT_LOADCOMP	00000002H

Return values

Ret [ C, C++ : long ] [ Python : ctypes.c_long ]

Return values	Content
0	Normality completion
7	Execute AioResetDevice function because the device has recovered from standby mode
10001	Invalid Id was specified Use the Id retrieved from AioInit to specify the Id in this function.
10002	AIO driver can't be called At first, perform AioInit function.
15010	The value of CntChannel is outside the designated range of the function
15011	Pointer to CntMode is NULL Specify the address of variable to parameter.
20001	This function can't be used by this device
20002	Can not use while by another device works To use this function, counter operation must be stopped.
20003	Can not use because another process is using the device When another process is using the device, all functions except for those that support multi-process can not be performed.
25010	The value of CntChannel is outside the designated range of the device being used

Initial values

CntMode = 0

Remarks

This function cannot be used on devices without counter functionality.
If the device is in operation, the function cannot be performed.

Example

Retrieves the counter operation for channel 0.

C, C++	long Ret; short CntMode; Ret = AioGetCntComparisonMode ( Id , 0 , &CntMode );
Python	Ret = ctypes.c_long() CntMode = ctypes.c_short() Ret.value = caio.AioGetCntComparisonMode ( Id , 0 , ctypes.byref(CntMode) )