int GetDataBlockReadCount(AmplifierSampleRate sampleRate)
{
switch (sampleRate)
{
case AmplifierSampleRate.SampleRate1000Hz:
case AmplifierSampleRate.SampleRate1250Hz:
case AmplifierSampleRate.SampleRate1500Hz:
case AmplifierSampleRate.SampleRate2000Hz:
case AmplifierSampleRate.SampleRate2500Hz:
return(1);
case AmplifierSampleRate.SampleRate3000Hz:
case AmplifierSampleRate.SampleRate3333Hz:
case AmplifierSampleRate.SampleRate4000Hz:
return(2);
case AmplifierSampleRate.SampleRate5000Hz:
case AmplifierSampleRate.SampleRate6250Hz:
return(3);
case AmplifierSampleRate.SampleRate8000Hz:
return(4);
case AmplifierSampleRate.SampleRate10000Hz:
return(6);
case AmplifierSampleRate.SampleRate12500Hz:
return(7);
case AmplifierSampleRate.SampleRate15000Hz:
return(8);
case AmplifierSampleRate.SampleRate20000Hz:
return(12);
case AmplifierSampleRate.SampleRate25000Hz:
return(14);
case AmplifierSampleRate.SampleRate30000Hz:
return(16);
default:
throw new ArgumentException("Invalid amplifier sample rate.", "sampleRate");
}
}
void ChangeSampleRate(AmplifierSampleRate amplifierSampleRate)
{
evalBoard.SetSampleRate(amplifierSampleRate);
// Now that we have set our sampling rate, we can set the MISO sampling delay
// which is dependent on the sample rate.
evalBoard.SetCableLengthMeters(BoardPort.PortA, cableLengthPortA);
evalBoard.SetCableLengthMeters(BoardPort.PortB, cableLengthPortB);
evalBoard.SetCableLengthMeters(BoardPort.PortC, cableLengthPortC);
evalBoard.SetCableLengthMeters(BoardPort.PortD, cableLengthPortD);
// Set up an RHD2000 register object using this sample rate to
// optimize MUX-related register settings.
var sampleRate = evalBoard.GetSampleRate();
chipRegisters = new Rhd2000Registers(sampleRate);
var commandList = new List <int>();
// Create a command list for the AuxCmd1 slot. This command sequence will create a 250 Hz,
// zero-amplitude sine wave (i.e., a flatline). We will change this when we want to perform
// impedance testing.
var sequenceLength = chipRegisters.CreateCommandListZcheckDac(commandList, 250, 0);
evalBoard.UploadCommandList(commandList, AuxCmdSlot.AuxCmd1, 0);
evalBoard.SelectAuxCommandLength(AuxCmdSlot.AuxCmd1, 0, sequenceLength - 1);
evalBoard.SelectAuxCommandBank(BoardPort.PortA, AuxCmdSlot.AuxCmd1, 0);
evalBoard.SelectAuxCommandBank(BoardPort.PortB, AuxCmdSlot.AuxCmd1, 0);
evalBoard.SelectAuxCommandBank(BoardPort.PortC, AuxCmdSlot.AuxCmd1, 0);
evalBoard.SelectAuxCommandBank(BoardPort.PortD, AuxCmdSlot.AuxCmd1, 0);
// Next, we'll create a command list for the AuxCmd2 slot. This command sequence
// will sample the temperature sensor and other auxiliary ADC inputs.
sequenceLength = chipRegisters.CreateCommandListTempSensor(commandList);
evalBoard.UploadCommandList(commandList, AuxCmdSlot.AuxCmd2, 0);
evalBoard.SelectAuxCommandLength(AuxCmdSlot.AuxCmd2, 0, sequenceLength - 1);
evalBoard.SelectAuxCommandBank(BoardPort.PortA, AuxCmdSlot.AuxCmd2, 0);
evalBoard.SelectAuxCommandBank(BoardPort.PortB, AuxCmdSlot.AuxCmd2, 0);
evalBoard.SelectAuxCommandBank(BoardPort.PortC, AuxCmdSlot.AuxCmd2, 0);
evalBoard.SelectAuxCommandBank(BoardPort.PortD, AuxCmdSlot.AuxCmd2, 0);
// For the AuxCmd3 slot, we will create three command sequences. All sequences
// will configure and read back the RHD2000 chip registers, but one sequence will
// also run ADC calibration. Another sequence will enable amplifier 'fast settle'.
// Before generating register configuration command sequences, set amplifier
// bandwidth parameters.
chipRegisters.SetDspCutoffFreq(DspCutoffFrequency);
chipRegisters.SetLowerBandwidth(LowerBandwidth);
chipRegisters.SetUpperBandwidth(UpperBandwidth);
chipRegisters.EnableDsp(DspEnabled);
// Upload version with ADC calibration to AuxCmd3 RAM Bank 0.
sequenceLength = chipRegisters.CreateCommandListRegisterConfig(commandList, true);
evalBoard.UploadCommandList(commandList, AuxCmdSlot.AuxCmd3, 0);
evalBoard.SelectAuxCommandLength(AuxCmdSlot.AuxCmd3, 0, sequenceLength - 1);
// Upload version with no ADC calibration to AuxCmd3 RAM Bank 1.
sequenceLength = chipRegisters.CreateCommandListRegisterConfig(commandList, false);
evalBoard.UploadCommandList(commandList, AuxCmdSlot.AuxCmd3, 1);
evalBoard.SelectAuxCommandLength(AuxCmdSlot.AuxCmd3, 0, sequenceLength - 1);
// Upload version with fast settle enabled to AuxCmd3 RAM Bank 2.
chipRegisters.SetFastSettle(true);
sequenceLength = chipRegisters.CreateCommandListRegisterConfig(commandList, false);
evalBoard.UploadCommandList(commandList, AuxCmdSlot.AuxCmd3, 2);
evalBoard.SelectAuxCommandLength(AuxCmdSlot.AuxCmd3, 0, sequenceLength - 1);
chipRegisters.SetFastSettle(false);
UpdateRegisterConfiguration(fastSettle: false);
}
