AioGetAoClockEdge

Function

Retrieves the timing of external clock input.

Format

Ret = AioGetAoClockEdge ( Id , AoClockEdge )

Parameters

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

AoClockEdge [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the variable that stores the timing of external input.

0	External input falling edge
1	External input rising edge

Return value

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.
13780	Pointer to AiClockEdge 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, analog output 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.

Initial value

External input falling edge is used for all devices. *

* in case of using ADA16-8/2(LPCI)L and DA16-4(LPCI)L
In these devices, the default value has both parameters (rising or falling), it depends on manufacturer's serial version.

Remarks

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

Example

Retrieves the timing of external clock.

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

See also

AioSetAoClockEdge AioSetAoClockType