/****************************************************************************
* SetTrigger
* this function sets all the required trigger parameters, and calls the
* triggering functions
****************************************************************************/
short SetTrigger(Imports.TriggerChannelProperties[] channelProperties, short nChannelProperties, Imports.TriggerConditions[] triggerConditions, short nTriggerConditions, Imports.ThresholdDirection[] directions, Pwq pwq, uint delay, short auxOutputEnabled, int autoTriggerMs)
{
short status;
if (
(status =
Imports.SetTriggerChannelProperties(_handle, channelProperties, nChannelProperties, auxOutputEnabled,
autoTriggerMs)) != 0)
{
return status;
}
if ((status = Imports.SetTriggerChannelConditions(_handle, triggerConditions, nTriggerConditions)) != 0)
{
return status;
}
if (directions == null) directions = new Imports.ThresholdDirection[] { Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None, Imports.ThresholdDirection.None, Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None, Imports.ThresholdDirection.None};
if ((status = Imports.SetTriggerChannelDirections(_handle,
directions[(int)Imports.Channel.ChannelA],
directions[(int)Imports.Channel.ChannelB],
directions[(int)Imports.Channel.ChannelC],
directions[(int)Imports.Channel.ChannelD],
directions[(int)Imports.Channel.External],
directions[(int)Imports.Channel.Aux])) != 0)
{
return status;
}
if ((status = Imports.SetTriggerDelay(_handle, delay)) != 0)
{
return status;
}
if (pwq == null) pwq = new Pwq(null, 0, Imports.ThresholdDirection.None, 0, 0, Imports.PulseWidthType.None);
status = Imports.SetPulseWidthQualifier(_handle, pwq.conditions,
pwq.nConditions, pwq.direction,
pwq.lower, pwq.upper, pwq.type);
return status;
}
/****************************************************************************
* SetTrigger
* this function sets all the required trigger parameters, and calls the
* triggering functions
****************************************************************************/
short SetTrigger(Imports.TriggerChannelProperties[] channelProperties, short nChannelProperties, Imports.TriggerConditions[] triggerConditions, short nTriggerConditions, Imports.ThresholdDirection[] directions, Pwq pwq, uint delay, short auxOutputEnabled, int autoTriggerMs)
{
short status;
if (
(status =
Imports.SetTriggerChannelProperties(_handle, channelProperties, nChannelProperties, auxOutputEnabled,
autoTriggerMs)) != 0)
{
return(status);
}
if ((status = Imports.SetTriggerChannelConditions(_handle, triggerConditions, nTriggerConditions)) != 0)
{
return(status);
}
if (directions == null)
{
directions = new Imports.ThresholdDirection[] { Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None, Imports.ThresholdDirection.None, Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None, Imports.ThresholdDirection.None }
}
;
if ((status = Imports.SetTriggerChannelDirections(_handle,
directions[(int)Imports.Channel.ChannelA],
directions[(int)Imports.Channel.ChannelB],
directions[(int)Imports.Channel.ChannelC],
directions[(int)Imports.Channel.ChannelD],
directions[(int)Imports.Channel.External],
directions[(int)Imports.Channel.Aux])) != 0)
{
return(status);
}
if ((status = Imports.SetTriggerDelay(_handle, delay)) != 0)
{
return(status);
}
if (pwq == null)
{
pwq = new Pwq(null, 0, Imports.ThresholdDirection.None, 0, 0, Imports.PulseWidthType.None);
}
status = Imports.SetPulseWidthQualifier(_handle, pwq.conditions,
pwq.nConditions, pwq.direction,
pwq.lower, pwq.upper, pwq.type);
return(status);
}
/****************************************************************************
* CollectBlockImmediate
* this function demonstrates how to collect a single block of data
* from the unit (start collecting immediately)
****************************************************************************/
void CollectBlockImmediate()
{
Console.WriteLine("Collect block immediate...");
Console.WriteLine("Press a key to start");
WaitForKey();
SetDefaults();
/* Trigger disabled */
SetTrigger(null, 0, null, 0, null, null, 0, 0, 0);
BlockDataHandler("First 10 readings", 0);
}
/****************************************************************************
* CollectBlockRapid
* this function demonstrates how to collect blocks of data
* using the RapidCapture function
****************************************************************************/
void CollectBlockRapid()
{
ushort numRapidCaptures = 1;
bool valid = false;
Console.WriteLine("Collect rapid block...");
Console.WriteLine("Specify number of captures:");
do
{
try
{
numRapidCaptures = ushort.Parse(Console.ReadLine());
valid = true;
}
catch
{
valid = false;
Console.WriteLine("\nEnter numeric values only");
}
} while (Imports.SetNoOfRapidCaptures(_handle, numRapidCaptures) > 0 || !valid);
int maxSamples;
Imports.MemorySegments(_handle, numRapidCaptures, out maxSamples);
Console.WriteLine("Collecting {0} rapid blocks. Press a key to start", numRapidCaptures);
WaitForKey();
SetDefaults();
/* Trigger is optional, disable it for now */
SetTrigger(null, 0, null, 0, null, null, 0, 0, 0);
RapidBlockDataHandler(numRapidCaptures);
}
/****************************************************************************
* CollectBlockTriggered
* this function demonstrates how to collect a single block of data from the
* unit, when a trigger event occurs.
****************************************************************************/
void CollectBlockTriggered()
{
short triggerVoltage = mv_to_adc(1000, (short)_channelSettings[(int)Imports.Channel.ChannelA].range); // ChannelInfo stores ADC counts
Imports.TriggerChannelProperties[] sourceDetails = new Imports.TriggerChannelProperties[] {
new Imports.TriggerChannelProperties(triggerVoltage,
256 * 10,
triggerVoltage,
256 * 10,
Imports.Channel.ChannelA,
Imports.ThresholdMode.Level)
};
Imports.TriggerConditions[] conditions = new Imports.TriggerConditions[] {
new Imports.TriggerConditions(Imports.TriggerState.True,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare)
};
Imports.ThresholdDirection[] directions = new Imports.ThresholdDirection[]
{ Imports.ThresholdDirection.Rising,
Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None };
Console.WriteLine("Collect block triggered...");
Console.Write("Collects when value rises past {0}", (_scaleVoltages) ?
adc_to_mv(sourceDetails[0].ThresholdMajor,
(int)_channelSettings[(int)Imports.Channel.ChannelA].range)
: sourceDetails[0].ThresholdMajor);
Console.WriteLine("{0}", (_scaleVoltages) ? ("mV") : ("ADC Counts"));
Console.WriteLine("Press a key to start...");
WaitForKey();
SetDefaults();
/* Trigger enabled
* Rising edge
* Threshold = 1000mV */
SetTrigger(sourceDetails, 1, conditions, 1, directions, null, 0, 0, 0);
BlockDataHandler("Ten readings after trigger", 0);
}
/****************************************************************************
* Initialise unit' structure with Variant specific defaults
****************************************************************************/
void GetDeviceInfo()
{
int variant = 0;
string[] description =
{
"Driver Version ",
"USB Version ",
"Hardware Version ",
"Variant Info ",
"Serial ",
"Cal Date ",
"Kernel Ver "
};
System.Text.StringBuilder line = new System.Text.StringBuilder(80);
if (_handle >= 0)
{
for (int i = 0; i < 7; i++)
{
short requiredSize;
Imports.GetUnitInfo(_handle, line, 80, out requiredSize, i);
if (i == 3)
{
line.Length = 4;
variant = Convert.ToInt16(line.ToString());
}
Console.WriteLine("{0}: {1}", description[i], line);
}
switch (variant)
{
case (int)Imports.Model.PS4223:
_firstRange = Imports.Range.Range_50MV;
_lastRange = Imports.Range.Range_100V;
_channelCount = DUAL_SCOPE;
break;
case (int)Imports.Model.PS4224:
_firstRange = Imports.Range.Range_50MV;
_lastRange = Imports.Range.Range_20V;
_channelCount = DUAL_SCOPE;
break;
case (int)Imports.Model.PS4423:
_firstRange = Imports.Range.Range_50MV;
_lastRange = Imports.Range.Range_100V;
_channelCount = QUAD_SCOPE;
break;
case (int)Imports.Model.PS4424:
_firstRange = Imports.Range.Range_50MV;
_lastRange = Imports.Range.Range_20V;
_channelCount = QUAD_SCOPE;
break;
case (int)Imports.Model.PS4226:
_firstRange = Imports.Range.Range_50MV;
_lastRange = Imports.Range.Range_20V;
_channelCount = DUAL_SCOPE;
break;
case (int)Imports.Model.PS4227:
_firstRange = Imports.Range.Range_50MV;
_lastRange = Imports.Range.Range_20V;
_channelCount = DUAL_SCOPE;
break;
case (int)Imports.Model.PS4262:
_firstRange = Imports.Range.Range_10MV;
_lastRange = Imports.Range.Range_20V;
_channelCount = DUAL_SCOPE;
break;
}
}
}
/****************************************************************************
* Select input voltage ranges for channels A and B
****************************************************************************/
void SetVoltages()
{
bool valid = false;
/* See what ranges are available... */
for (int i = (int)_firstRange; i <= (int)_lastRange; i++)
{
Console.WriteLine("{0} . {1} mV", i, inputRanges[i]);
}
/* Ask the user to select a range */
Console.WriteLine("Specify voltage range ({0}..{1})", _firstRange, _lastRange);
Console.WriteLine("99 - switches channel off");
for (int ch = 0; ch < _channelCount; ch++)
{
Console.WriteLine("");
uint range = 8;
do
{
try
{
Console.WriteLine("Channel: {0}", (char)('A' + ch));
range = uint.Parse(Console.ReadLine());
valid = true;
}
catch
{
valid = false;
Console.WriteLine("\nEnter numeric values only");
}
} while ((range != 99 && (range < (uint)_firstRange || range > (uint)_lastRange) || !valid));
if (range != 99)
{
_channelSettings[ch].range = (Imports.Range)range;
Console.WriteLine(" = {0} mV", inputRanges[range]);
_channelSettings[ch].enabled = true;
}
else
{
Console.WriteLine("Channel Switched off");
_channelSettings[ch].enabled = false;
}
}
SetDefaults(); // Set defaults now, so that if all but 1 channels get switched off, timebase updates to timebase 0 will work
}
/****************************************************************************
*
* Select _timebase, set _oversample to on and time units as nano seconds
*
****************************************************************************/
void SetTimebase()
{
int timeInterval;
int maxSamples;
bool valid = false;
Console.WriteLine("Specify timebase");
do
{
try
{
_timebase = uint.Parse(Console.ReadLine());
valid = true;
}
catch
{
valid = false;
Console.WriteLine("\nEnter numeric values only");
}
} while (!valid);
while (Imports.GetTimebase(_handle, _timebase, BUFFER_SIZE, out timeInterval, 1, out maxSamples, 0) != 0)
{
Console.WriteLine("Selected timebase {0} could not be used", _timebase);
_timebase++;
}
Console.WriteLine("Timebase {0} - {1} ns", _timebase, timeInterval);
_oversample = 1;
}
/****************************************************************************
* Stream Data Handler
* - Used by the two stream data examples - untriggered and triggered
* Inputs:
* - preTrigger - the number of samples in the pre-trigger phase
* (0 if no trigger has been set)
***************************************************************************/
void StreamDataHandler(uint preTrigger)
{
uint sampleCount = BUFFER_SIZE * 10; /* *10 is to make sure buffer large enough */
short[][] minBuffers = new short[_channelCount][];
short[][] maxBuffers = new short[_channelCount][];
PinnedArray <short>[] minPinned = new PinnedArray <short> [_channelCount];
PinnedArray <short>[] maxPinned = new PinnedArray <short> [_channelCount];
uint totalsamples = 0;
uint triggeredAt = 0;
short status;
uint sampleInterval = 1;
for (int i = 0; i < _channelCount; i++) // create data buffers
{
minBuffers[i] = new short[sampleCount];
maxBuffers[i] = new short[sampleCount];
minPinned[i] = new PinnedArray <short>(minBuffers[i]);
maxPinned[i] = new PinnedArray <short>(maxBuffers[i]);
status = Imports.SetDataBuffers(_handle, (Imports.Channel)i, minBuffers[i], maxBuffers[i], (int)sampleCount);
}
Console.WriteLine("Waiting for trigger...Press a key to abort");
_autoStop = false;
status = Imports.RunStreaming(_handle, ref sampleInterval, Imports.ReportedTimeUnits.MicroSeconds,
preTrigger, 1000000 - preTrigger, true, 1000, sampleCount);
Console.WriteLine("Run Streaming : {0} ", status);
Console.WriteLine("Streaming data...Press a key to abort");
TextWriter writer = new StreamWriter("stream.txt", false);
writer.Write("For each of the {0} Channels, results shown are....", _channelCount);
writer.WriteLine();
writer.WriteLine("Maximum Aggregated value ADC Count & mV, Minimum Aggregated value ADC Count & mV");
writer.WriteLine();
for (int i = 0; i < _channelCount; i++)
{
writer.Write("Ch Max ADC Max mV Min ADC Min mV ");
}
writer.WriteLine();
while (!_autoStop && !Console.KeyAvailable)
{
/* Poll until data is received. Until then, GetStreamingLatestValues wont call the callback */
Thread.Sleep(100);
_ready = false;
Imports.GetStreamingLatestValues(_handle, StreamingCallback, IntPtr.Zero);
if (_ready && _sampleCount > 0) /* can be ready and have no data, if autoStop has fired */
{
if (_trig > 0)
{
triggeredAt = totalsamples + _trigAt;
}
totalsamples += (uint)_sampleCount;
Console.Write("\nCollected {0,4} samples, index = {1,5} Total = {2,5}", _sampleCount, _startIndex, totalsamples);
if (_trig > 0)
{
Console.Write("\tTrig at Index {0}", triggeredAt);
}
for (uint i = _startIndex; i < (_startIndex + _sampleCount); i++)
{
for (int ch = 0; ch < _channelCount; ch++)
{
if (_channelSettings[ch].enabled)
{
writer.Write("Ch{0} {1,7} {2,7} {3,7} {4,7} ",
(char)('A' + ch),
minPinned[ch].Target[i],
adc_to_mv(minPinned[ch].Target[i], (int)_channelSettings[(int)(Imports.Channel.ChannelA + ch)].range),
maxPinned[ch].Target[i],
adc_to_mv(maxPinned[ch].Target[i], (int)_channelSettings[(int)(Imports.Channel.ChannelA + ch)].range));
}
}
writer.WriteLine();
}
}
}
if (Console.KeyAvailable)
{
Console.ReadKey(true); // clear the key
}
Imports.Stop(_handle);
writer.Close();
if (!_autoStop)
{
Console.WriteLine("\ndata collection aborted");
}
foreach (PinnedArray <short> p in minPinned)
{
if (p != null)
{
p.Dispose();
}
}
foreach (PinnedArray <short> p in maxPinned)
{
if (p != null)
{
p.Dispose();
}
}
}
/****************************************************************************
* CollectStreamingImmediate
* this function demonstrates how to collect a stream of data
* from the unit (start collecting immediately)
***************************************************************************/
void CollectStreamingImmediate()
{
SetDefaults();
Console.WriteLine("Collect streaming...");
Console.WriteLine("Data is written to disk file (stream.txt)");
Console.WriteLine("Press a key to start");
WaitForKey();
/* Trigger disabled */
SetTrigger(null, 0, null, 0, null, null, 0, 0, 0);
StreamDataHandler(0);
}
/****************************************************************************
* CollectStreamingTriggered
* this function demonstrates how to collect a stream of data
* from the unit (start collecting on trigger)
***************************************************************************/
void CollectStreamingTriggered()
{
short triggerVoltage = mv_to_adc(1000, (short)_channelSettings[(int)Imports.Channel.ChannelA].range); // ChannelInfo stores ADC counts
Imports.TriggerChannelProperties[] sourceDetails = new Imports.TriggerChannelProperties[] {
new Imports.TriggerChannelProperties(triggerVoltage,
256 * 10,
triggerVoltage,
256 * 10,
Imports.Channel.ChannelA,
Imports.ThresholdMode.Level)
};
Imports.TriggerConditions[] conditions = new Imports.TriggerConditions[] {
new Imports.TriggerConditions(Imports.TriggerState.True,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare,
Imports.TriggerState.DontCare)
};
Imports.ThresholdDirection[] directions = new Imports.ThresholdDirection[]
{ Imports.ThresholdDirection.Rising,
Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None,
Imports.ThresholdDirection.None };
Console.WriteLine("Collect streaming triggered...");
Console.WriteLine("Data is written to disk file (stream.txt)");
Console.WriteLine("Press a key to start");
WaitForKey();
SetDefaults();
/* Trigger enabled
* Rising edge
* Threshold = 1000mV */
SetTrigger(sourceDetails, 1, conditions, 1, directions, null, 0, 0, 0);
StreamDataHandler(100000);
}
/****************************************************************************
* DisplaySettings
* Displays information about the user configurable settings in this example
***************************************************************************/
void DisplaySettings()
{
int ch;
int voltage;
Console.WriteLine("\n\nReadings will be scaled in {0}", (_scaleVoltages) ? ("mV") : ("ADC counts"));
for (ch = 0; ch < _channelCount; ch++)
{
voltage = inputRanges[(int)_channelSettings[ch].range];
Console.Write("Channel {0} Voltage Range = ", (char)('A' + ch));
if (voltage < 1000)
{
Console.WriteLine("{0}mV", voltage);
}
else
{
Console.WriteLine("{0}V", voltage / 1000);
}
}
Console.WriteLine();
}