How do I detect and handle disconnects?

If the neoVI is removed from the computer or stops responding, most API calls will generate a disconnect error. If you receive a return value from an API call that indicates an error occurred, you must call the GetLastAPIError method. If the error is NEOVI_ERROR_DLL_NEOVI_NO_RESPONSE then the neoVI has either been unplugged or is not responding.

To recover from this condition follow these steps:

• Plug the neoVI back in, or in the case of the neoVI not responding, remove and then plug back in.

• Call the ClosePort method.

• Call the OpenNeoDevice method using the same parameters are before.

The following API functions will generate the NEOVI_ERROR_DLL_NEOVI_NO_RESPONSE error: