public async Task <DeviceSample[]> GetSamplesFromDevice(SamplesReadingCallback samplesReadingCallback)
{
var result = new List <DeviceSample>();
await Task.Run(() =>
{
WithSerialPort(() =>
{
var details = new DeviceDetails();
GetInfoDetails1(details);
var data = new DataMessageSample[details.NumberOfSamples];
GetData(data, samplesReadingCallback);
int sampleNumber = 1;
foreach (var sample in data)
{
result.Add(new DeviceSample
{
ID = sampleNumber++,
Temperature = Convert.ToDecimal(sample.Temperature) / 10M,
TimeStamp = sample.GetTimeStamp()
});
}
});
});
return(result.ToArray());
}
public void GetSamplesFromDevice(SamplesReadingCallback samplesReadingCallback)
{
var result = new List <LoggerSample>();
}
private void DoCallback(int offset, int totalBytes, SamplesReadingCallback callback)
{
var p = Convert.ToInt32(offset * 100.0 / totalBytes);
callback(p, offset, totalBytes);
}
private void GetData(DataMessageSample[] data, SamplesReadingCallback callback)
{
var messageCount = data.Length / 15;
var totalBytes = messageCount * Marshal.SizeOf <DataMessage>();
var rest = data.Length % 15;
if (rest > 0)
{
messageCount++;
totalBytes = totalBytes + Marshal.SizeOf <DataMessageHeader>() +
rest * Marshal.SizeOf <DataMessageSample>() +
Marshal.SizeOf <DataMessageTail>();
}
var buffer = new byte[Marshal.SizeOf <DataMessage>() * messageCount];
var offset = 0;
var estimatedTransferTime = Convert.ToInt64(totalBytes * serialFrameSize * 1000) / serialPort.BaudRate;
logger.Info($"Data : {totalBytes} estimated transfer time {estimatedTransferTime} ms");
var question = Messages.GetDataMessage(SerialNumber);
SendQuestion(question);
sw.Restart();
while (offset < totalBytes)
{
//TODO 1 JS PROTECT AGAINST ENDLESS LOOP
var bytecount = buffer.Length - offset;
int r = serialPort.BaseStream.Read(buffer, offset, bytecount);
offset += r;
decimal progress = Convert.ToDecimal(offset * 100 / buffer.Length);
if (r > 0)
{
logger.Debug($"\treceived {r} bytes ({offset} of {buffer.Length}) ({ progress:##0.##}%)");
}
if (r == 0)
{
Thread.Sleep(1);
}
DoCallback(offset, totalBytes, callback);
}
sw.Start();
logger.Info($"Received a total of {offset} bytes in {sw.Elapsed}");
if (rest > 0)
{
var dmts = Marshal.SizeOf <DataMessageTail>();
var targetIndex = buffer.Length - Marshal.SizeOf <DataMessageTail>();
var srcIndex = targetIndex - (15 - rest) * Marshal.SizeOf <DataMessageSample>();
Array.Copy(buffer, srcIndex, buffer, targetIndex, dmts);
}
var dataMessages = Utils.MapArray <DataMessage>(buffer);
var c = 0;
for (int i = 0; i < dataMessages.Length; i++)
{
var samples = dataMessages[i].GetSamples();
for (int j = 0; j < 15 && c < data.Length; j++, c++)
{
data[c] = samples[j];
}
}
}
