int ReadDeviceId(Rhd2000DataBlock dataBlock, int stream, out int register59Value)
{
// First, check ROM registers 32-36 to verify that they hold 'INTAN', and
// the initial chip name ROM registers 24-26 that hold 'RHD'.
// This is just used to verify that we are getting good data over the SPI
// communication channel.
var intanChipPresent = (
(char)dataBlock.AuxiliaryData[stream][2, 32] == 'I' &&
(char)dataBlock.AuxiliaryData[stream][2, 33] == 'N' &&
(char)dataBlock.AuxiliaryData[stream][2, 34] == 'T' &&
(char)dataBlock.AuxiliaryData[stream][2, 35] == 'A' &&
(char)dataBlock.AuxiliaryData[stream][2, 36] == 'N' &&
(char)dataBlock.AuxiliaryData[stream][2, 24] == 'R' &&
(char)dataBlock.AuxiliaryData[stream][2, 25] == 'H' &&
(char)dataBlock.AuxiliaryData[stream][2, 26] == 'D');
// If the SPI communication is bad, return -1. Otherwise, return the Intan
// chip ID number stored in ROM regstier 63.
if (!intanChipPresent)
{
register59Value = -1;
return(-1);
}
else
{
register59Value = dataBlock.AuxiliaryData[stream][2, 23]; // Register 59
return(dataBlock.AuxiliaryData[stream][2, 19]); // chip ID (Register 63)
}
}
Rhd2000DataBlock RunSingleCommandSequence()
{
// Start SPI interface.
evalBoard.Run();
// Wait for the 60-sample run to complete.
while (evalBoard.IsRunning())
{
Thread.Sleep(0);
}
// Read the resulting single data block from the USB interface.
var dataBlock = new Rhd2000DataBlock(evalBoard.GetNumEnabledDataStreams(), evalBoard.IsUsb3());
evalBoard.ReadDataBlock(dataBlock);
return(dataBlock);
}
private void Load()
{
evalBoard = new Rhythm.Net.Rhd2000EvalBoard();
// Open Opal Kelly XEM6010 board.
evalBoard.Open();
samplesPerBlock = Rhd2000DataBlock.GetSamplesPerDataBlock(evalBoard.IsUsb3());
try
{
// Load Rhythm FPGA configuration bitfile (provided by Intan Technologies).
evalBoard.UploadFpgaBitfile(BitFileName);
// Initialize interface board.
evalBoard.Initialize();
// Set sample rate and upload all auxiliary SPI command sequences.
ChangeSampleRate(SampleRate);
// Run ADC calibration
RunCalibration();
// Set default configuration for all eight DACs on interface board.
SetDacDefaultConfiguration();
// Find amplifier chips connected to interface board and compute their
// optimal delay parameters.
ScanConnectedAmplifiers();
}
catch
{
// Close interface board in case of configuration errors
evalBoard.Close();
throw;
}
}
