private void CbDevicesSelectedIndexChanged(object sender, EventArgs e)
{
groupBoxSettings.Enabled = false;
if (device != null)
{
device.StopDacq();
device.Disconnect();
device.Dispose();
device = null;
}
btStart.Enabled = cbDevices.SelectedIndex >= 0;
btStop.Enabled = false;
var entry = usblist.GetUsbListEntry((uint)cbDevices.SelectedIndex);
/* choose one of the following constructors:
* The first one uses the OnNewData callback and gives you a reference to the raw multiplexed data.
* This could be used without further initialization
* The second one uses the more advanced callback which gives you the data for each channel in a callback but needs initialization
* for buffers and the selected channels
*/
if (usePollForData)
{
device = new CMeaDeviceNet(entry.DeviceId.BusType);
}
else
{
device = new CMeaDeviceNet(entry.DeviceId.BusType, OnChannelData, OnError);
}
device.Connect(entry);
useWireless = entry.DeviceId.IdProduct == ProductIdEnumNet.W2100;
bool isMCCard = entry.DeviceId.IdProduct == ProductIdEnumNet.MC_Card;
if (useWireless)
{
CW2100_FunctionNet func = new CW2100_FunctionNet(device);
HeadStageIDTypeState headstagestate = func.GetSelectedHeadstageState(0); // information about currently selected headstage
HeadStageIDType[] headstages = func.GetAvailableHeadstages(30); // list of available headstage in range
if (headstagestate.IdType.ID == 0xFFFF) // if no headstage is currently selected
{
if (headstages.Length > 0) // if at least one headstage is available
{
func.SelectHeadstage(headstages[0].ID, 0); // then selected the first one
}
}
// func.DeselectHeadstage(0); // use this to deselect a selected headstage
}
device.SendStopDacq(); // only to be sure
tbDeviceInfo.Text = "";
tbDeviceInfo.Text += "Serial number: " + device.SerialNumber + Environment.NewLine;
device.HWInfo().GetNumberOfHWADCChannels(out int hwchannels);
tbDeviceInfo.Text += @"Number of Hardware channels: " + hwchannels.ToString("D") + Environment.NewLine;
if (hwchannels == 0)
{
hwchannels = 64;
}
// configure MeaDevice: MC_Card or Usb
device.SetNumberOfChannels(hwchannels);
const int Samplingrate = 20000; // MC_Card does not support all settings, please see MC_Rack for valid settings
device.SetSamplerate(Samplingrate, 1, 0);
int gain = device.GetGain();
device.HWInfo().GetAvailableVoltageRangesInMicroVoltAndStringsInMilliVolt(out var voltageRanges);
for (int i = 0; i < voltageRanges.Count; i++)
{
tbDeviceInfo.Text += @"(" + i.ToString("D") + @") " + voltageRanges[i].VoltageRangeDisplayStringMilliVolt + Environment.NewLine;
}
// Set the range according to the index (only valid for MC_Card)
if (isMCCard)
{
device.SetVoltageRangeByIndex(0, 0);
}
device.EnableDigitalIn(true, 0);
// Checksum not supported by MC_Card
if (!isMCCard)
{
device.EnableChecksum(true, 0);
}
// Get the layout to know how the data look like that you receive
device.GetChannelLayout(out int ana, out int digi, out int che, out int tim, out int block, 0);
// or
block = device.GetChannelsInBlock(0);
// set the channel combo box with the channels
SetChannelCombo(block);
channelblocksize = Samplingrate / 10; // good choice for MC_Card
bool[] selChannels = new bool[block];
for (int i = 0; i < block; i++)
{
selChannels[i] = true; // With true channel i is selected
// selChannels[i] = false; // With false the channel i is deselected
}
mChannelHandles = block; // for this case, if all channels are selected
// queue size and threshold should be selected carefully
if (useChannelMethod && useChannelData)
{
device.SetSelectedData(selChannels, 10 * channelblocksize, channelblocksize, SampleSizeNet.SampleSize16Unsigned, block);
//device.AddSelectedChannelsQueue(10, 2, 10 * channelblocksize, channelblocksize, SampleSizeNet.SampleSize16Unsigned);
//device.ChannelBlock_SetCommonThreshold(channelblocksize);
// Alternative call if you want to select all channels
//device.SetSelectedData(block, 10 * channelblocksize, channelblocksize, SampleSizeNet.SampleSize16Unsigned, block);
}
else if (useChannelMethod && !useChannelData)
{
device.SetSelectedChannels(selChannels, 10 * channelblocksize, channelblocksize, SampleSizeNet.SampleSize16Unsigned, block);
}
else
{
device.SetSelectedChannelsQueue(selChannels, 10 * channelblocksize, channelblocksize, SampleSizeNet.SampleSize16Unsigned, block);
}
device.ChannelBlock_SetCheckChecksum((uint)che, (uint)tim);
}