private void ClearRspDelegates()
{
devForm.threadMgr.rspDataIn.ExtCmdStatus.ExtCmdStatusCallback = (ExtCmdStatus.ExtCmdStatusDelegate)null;
devForm.threadMgr.rspDataIn.AttErrorRsp.AttErrorRspCallback = (AttErrorRsp.AttErrorRspDelegate)null;
devForm.threadMgr.rspDataIn.AttReadBlobRsp.AttReadBlobRspCallback = (AttReadBlobRsp.AttReadBlobRspDelegate)null;
}