public AD7617Device()
{
// Reference to context
this.oni_ref = ONIManager.ReserveDAQ();
// Find the hardware clock rate
var sample_clock_hz = (int)250e6; // TODO: oni_ref.DAQ.AcquisitionClockHz;
// Find all RHD devices
devices = oni_ref.DAQ.DeviceMap.Where(
pair => pair.Value.id == (uint)Device.DeviceID.AD7617
).ToDictionary(x => x.Key, x => x.Value);
// Stop here if there are no devices to use
if (devices.Count == 0)
{
throw new oni.ONIException((int)oni.lib.Error.DEVIDX);
}
DeviceIndex = new DeviceIndexSelection();
DeviceIndex.Indices = devices.Keys.ToArray();
source = Observable.Create <AD7617DataFrame>(observer =>
{
EventHandler <FrameReceivedEventArgs> inputReceived;
var data_block = new AD7617DataBlock(NumChannels, BlockSize);
oni_ref.Environment.Start();
inputReceived = (sender, e) =>
{
var frame = e.Value;
//If this frame contaisn data from the selected device_index
if (frame.DeviceIndices.Contains(DeviceIndex.SelectedIndex))
{
// Pull the sample
if (data_block.FillFromFrame(frame, DeviceIndex.SelectedIndex))
{
observer.OnNext(new AD7617DataFrame(data_block, sample_clock_hz)); //TODO: Does this deep copy??
data_block = new AD7617DataBlock(NumChannels, BlockSize);
}
}
};
oni_ref.Environment.FrameInputReceived += inputReceived;
return(Disposable.Create(() =>
{
oni_ref.Environment.FrameInputReceived -= inputReceived;
oni_ref.Environment.Stop();
oni_ref.Dispose();
}));
});
}
public AD7617DataFrame(AD7617DataBlock dataBlock, int hardware_clock_hz)
{
Clock = GetClock(dataBlock.Clock);
Time = GetTime(dataBlock.Clock, hardware_clock_hz);
Data = GetData(dataBlock.Data);
}