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:
| Function |
|---|
ScriptReadRxMessage |
ScriptReadTxMessage |
ScriptWriteRxMessage |
ScriptWriteTxMessage |
ScriptReadISO15765_2_TxMessage |
ScriptWriteISO15765_2_TxMessage |
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