public void StartReading()
{
//We always want to read SCAN_RATE samples per channel
int scanRate = _daqs.Length * SCAN_RATE;
int iteration = 0;
while (_continueReading)
{
int memHandle = MccDaq.MccService.WinBufAlloc(scanRate);
MccDaq.MccBoard theBoard = new MccDaq.MccBoard(0);
ushort[] buffer = new ushort[scanRate];
float[] outVal = new float[(int)scanRate];
MccDaq.ErrorInfo stat = new MccDaq.ErrorInfo();
int scannedRate = 1000;
stat = theBoard.AInScan(0, _daqs.Length - 1, scanRate, ref scannedRate, MccDaq.Range.Bip5Volts, memHandle, MccDaq.ScanOptions.Default);
stat = MccDaq.MccService.WinBufToArray(memHandle, out buffer[0], 0, scanRate);
for (int i = 0; i < buffer.Length; i++)
{
theBoard.ToEngUnits(MccDaq.Range.Bip5Volts, buffer[i], out outVal[i]);
}
MccDaq.MccService.WinBufFree(memHandle);
Dictionary<IDAQ, IDAQPoint[]> readingDictionary = new Dictionary<IDAQ, IDAQPoint[]>();
foreach (IDAQ daq in _daqs)
{
readingDictionary.Add(daq, new IDAQPoint[SCAN_RATE]);
}
for (int i = 0; i < scanRate;)
{
foreach (IDAQ daq in _daqs)
{
DAQChannel chDaq = (DAQChannel)daq;
ReadingDetail rd = new ReadingDetail();
int currentIndex = i / _daqs.Length;
rd.ParentChannel = chDaq;
rd.Time = currentIndex + (iteration * SCAN_RATE);
rd.Reading = outVal[i];
readingDictionary[daq][currentIndex] = rd;
chDaq.ReadingDetails.Add(rd);
i++;
}
}
iteration++;
_dataRetrieved(readingDictionary);
}
lock (this)
{
_stopFinishedCallback();
}
}
private void GetReadingDetailsForChannel(DAQChannel ch)
{
Dictionary<string, object> parameters = new Dictionary<string, object>();
parameters.Add("@cid",ch.ID);
IDataReader reader = ExecuteQuery("SELECT rd_id,rd_time,rd_point from READING_DETAIL where rd_cid = @cid order by rd_time asc", parameters);
while (reader.Read())
{
ReadingDetail rd = new ReadingDetail();
rd.ID = reader.GetInt32(0);
rd.ParentChannel = ch;
rd.Time = reader.GetInt32(1);
rd.Reading = reader.GetFloat(2);
ch.ReadingDetails.Add(rd);
}
reader.Close();
}
public void SaveReadingDetail(ReadingDetail rd)
{
SQLiteCommand cmd = _connection.CreateCommand();
cmd.CommandText = Properties.Settings.Default.INSERT_READING_DETAIL;
cmd.Parameters.Add(new SQLiteParameter("@rid", rd.ParentChannel.ParentReading.ID));
cmd.Parameters.Add(new SQLiteParameter("@cid", rd.ParentChannel.ID));
cmd.Parameters.Add(new SQLiteParameter("@time", rd.Time));
cmd.Parameters.Add(new SQLiteParameter("@point", rd.Reading));
rd.ID = Convert.ToInt32(cmd.ExecuteScalar());
}
public ReadingDetail CreateDetailForChannelandReading(DAQChannel ch, int time, int reading)
{
ReadingDetail rd = new ReadingDetail();
rd.Time = time;
rd.Reading = reading;
rd.ParentChannel = ch;
SQLiteCommand cmd = _connection.CreateCommand();
cmd.CommandText = Properties.Settings.Default.INSERT_READING_DETAIL;
cmd.Parameters.Add(new SQLiteParameter("@rid", ch.ParentReading.ID));
cmd.Parameters.Add(new SQLiteParameter("@cid", ch.ID));
cmd.Parameters.Add(new SQLiteParameter("@time", time));
cmd.Parameters.Add(new SQLiteParameter("@point", reading));
int rdid = Convert.ToInt32(cmd.ExecuteScalar());
rd.ID = rdid;
ch.ReadingDetails.Add(rd);
return rd;
}
