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 |
10002 |
AIO
driver can't be called |
13780 |
Pointer
to AiClockEdge is NULL |
20001 |
This function can't be used by this device |
20002 |
Can
not use while by another device works |
20003 |
Can
not use because another process is using the device |
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; |
Python |
Ret
= ctypes.c_long() |
See also
AioSetAoClockEdge AioSetAoClockType