CntSetSamplingCountEvent

Function

Specifies the callback function called when the event of specified time sampling completion occurs.

Format

Ret =CntSetSamplingCountEvent ( Id , Count , CallBackProc, Param )

Parameters

Id [C: short] [Python: ctypes.c_short]
Specifies the device ID retrieved from CntInit.

Count [C: unsigned int] [Python: ctypes.c_uint]
Specifies the number of sampling cycles at which to send notification.
A message will be sent to the application each time the specified number of sampling cycles is completed.

Range:
Count <= (FFFFFFh / Sampling channel number)

CallBack [C: PCNT_SAMPLING_COUNT_CALLBACK] [Python: PCNT_SAMPLING_COUNT_CALLBACK]
Specifies the address of callback function.

Param [C: void *] [Python: ctypes.c_void_p]
Specifies the parameter passed to the callback function.

Return Value

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

The other errors: (See also: Details of Error Code)

Remarks

It is the function which accept the interrupt by using the specified time sampling completion interrupt function of hardware.
After setting the interrupt callback setting, sets the interrupt event,
the callback function is called when the interrupt occurs.

For Ethernet devices
  If communication with the device is lost, the process will be unregistered and events will no longer be notified.
  If you want to perform event notification again, please make the settings again using this function.

  You can check the registration status of the current process using the CntGetNetCommunicationInfo function.

Example

See Also

PCNT_SAMPLING_COUNT_CALLBACK CntGetNetCommunicationInfo