public void performActions()
{
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double Value2 = 0, Value3 = 0;
double ValueDIBit = 0, ValueDIPort = 0, ValueCounter = 0;
// dummy variables to satisfy certian method signatures
double dummyDouble = 0;
int dummyInt = 0;
// Open UE9
try
{
ue9 = new UE9(LJUD.CONNECTION.USB, "0", true); // Connection through USB
//ue9 = new UE9(LJUD.CONNECTION.ETHERNET, "192.168.1.50", true); // Connection through ethernet
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
try
{
//First some configuration commands. These will be done with the ePut
//function which combines the add/go/get into a single call.
//Configure for 16-bit analog input measurements.
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.AIN_RESOLUTION, 16, 0);
//Configure the analog input range on channels 2 and 3 for bipolar gain=1.
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_AIN_RANGE, (LJUD.CHANNEL) 2, (double)LJUD.RANGES.BIP5V, 0);
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_AIN_RANGE, (LJUD.CHANNEL) 3, (double)LJUD.RANGES.BIP5V, 0);
//Enable Counter0 which will appear on FIO0 (assuming no other
//program has enabled any timers or Counter1).
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 0, 1, 0);
//Now we add requests to write and read I/O. These requests
//will be processed repeatedly by go/get statements in every
//iteration of the while loop below.
//Request AIN2 and AIN3.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.GET_AIN, 2, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.GET_AIN, 3, 0, 0, 0);
//Set DAC0 to 2.5 volts.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_DAC, 0, 2.5, 0, 0);
//Read digital input FIO1.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.GET_DIGITAL_BIT, 1, 0, 0, 0);
//Set digital output FIO2 to output-high.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_DIGITAL_BIT, 2, 1, 0, 0);
//Read digital inputs FIO3 through FIO7.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.GET_DIGITAL_PORT, 3, 0, 5, 0);
//Request the value of Counter0.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.GET_COUNTER, 0, 0, 0, 0);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
bool requestedExit = false;
while (!requestedExit)
{
try
{
//Execute the requests.
LJUD.GoOne(ue9.ljhandle);
//Get all the results. The input measurement results are stored. All other
//results are for configuration or output requests so we are just checking
//whether there was an error.
LJUD.GetFirstResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
bool isFinished = false;
while (!isFinished)
{
switch (ioType)
{
case LJUD.IO.GET_AIN:
switch ((int)channel)
{
case 2:
Value2 = dblValue;
break;
case 3:
Value3 = dblValue;
break;
}
break;
case LJUD.IO.GET_DIGITAL_BIT:
ValueDIBit = dblValue;
break;
case LJUD.IO.GET_DIGITAL_PORT:
ValueDIPort = dblValue;
break;
case LJUD.IO.GET_COUNTER:
ValueCounter = dblValue;
break;
}
try { LJUD.GetNextResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
showErrorMessage(e);
}
}
}
// Output the results
Console.Out.WriteLine("AIN2 = {0:0.00000}\n", Value2);
Console.Out.WriteLine("AIN3 = {0:0.00000}\n", Value3);
Console.Out.WriteLine("FIO1 = {0:0.00000}\n", ValueDIBit);
Console.Out.WriteLine("FIO3-FIO7 = {0:0.00000}\n", ValueDIPort); //Will read 31 if all 5 lines are pulled-high as normal.
Console.Out.WriteLine("Counter0 (FIO0) = {0:0.00000}\n", ValueCounter);
Console.Out.WriteLine("\nPress Enter to go again or (q) to quit\n");
requestedExit = Console.ReadLine().Equals("q");
}
}
public void performActions()
{
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
int dummyInt = 0;
double dummyDouble = 0;
// Open UE9
try
{
ue9 = new UE9(LJUD.CONNECTION.USB, "0", true); // Connection through USB
//ue9 = new UE9(LJUD.CONNECTION.ETHERNET, "192.168.1.50", true); // Connection through ethernet
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Disable all timers and counters to put everything in a known initial state.
//Disable the timer and counter, and the FIO lines will return to digital I/O.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 0, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 1, 0, 0, 0);
LJUD.GoOne(ue9.ljhandle);
//Output a PWM output on Timer0 (FIO0) and measure
//the duty cycle on Timer1 FIO1 and Timer2 FIO2.
//Use the fixed 750kHz timer clock source.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_CLOCK_BASE, (double)LJUD.TIMERCLOCKS.KHZ750, 0, 0);
//Set the divisor to 3 so the actual timer clock is 250kHz.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_CLOCK_DIVISOR, 3, 0, 0);
//Enable 2 timers. They will use FIO0 and FIO1.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 3, 0, 0);
//Configure Timer0 as 8-bit PWM. Frequency will be 250k/256 = 977 Hz.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_MODE, 0, (double)LJUD.TIMERMODE.PWM8, 0, 0);
//Set the PWM duty cycle to 50%. The passed value is the low time.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, 0, 32768, 0, 0);
//Configure Timer1 and Timer2 as duty cycle measurement.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_MODE, 1, (double)LJUD.TIMERMODE.DUTYCYCLE, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_MODE, 2, (double)LJUD.TIMERMODE.DUTYCYCLE, 0, 0);
//Execute the requests on a single LabJack. The driver will use a
//single low-level TimerCounter command to handle all the requests above.
LJUD.GoOne(ue9.ljhandle);
//Get all the results just to check for errors.
LJUD.GetFirstResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
bool isFinished = false;
while (!isFinished)
{
try
{
LJUD.GetNextResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
showErrorMessage(e);
}
}
}
//Set the PWM duty cycle to 25%. The passed value is the low time.
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, 0, 49152, 0);
//Now we will reset the duty cycle input timers, so we are sure the
//reads we do are not old values from before the PWM output was updated.
Thread.Sleep(10);
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, (LJUD.CHANNEL) 1, 0, 0);
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, (LJUD.CHANNEL) 2, 0, 0);
//Wait a little so we are sure a duty cycle measurement has occured.
Thread.Sleep(10);
//Read from Timer1.
ReadDutyCycle(ue9.ljhandle, 1);
//Read from Timer2.
ReadDutyCycle(ue9.ljhandle, 2);
//Set the PWM duty cycle to 0%. The passed value is the low time.
//We are specifying 65535 out of 65536 clicks to be low. Since
//this is 8-bit PWM, we actually get 255 low clicks out of 256 total
//clicks, so the minimum duty cycle is 0.4%.
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, 0, 65535, 0);
//Now we will reset the duty cycle input timers, so we are sure the
//reads we do are not old values from before the PWM output was updated.
Thread.Sleep(10);
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, (LJUD.CHANNEL) 1, 0, 0);
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, (LJUD.CHANNEL) 2, 0, 0);
//Wait a little so we are sure a duty cycle measurement has occured.
Thread.Sleep(10);
//Read from Timer1.
ReadDutyCycle(ue9.ljhandle, 1);
//Read from Timer2.
ReadDutyCycle(ue9.ljhandle, 2);
//Set the PWM duty cycle to 100%. The passed value is the low time.
//We are specifying 0 out of 65536 clicks to be low, so the signal
//will be high the entire time, meaning there are no edges
//for the input timers to detect, and no measurement should be made.
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, 0, 0, 0);
//Now we will reset the duty cycle input timers, so we are sure the
//reads we do are not old values from before the PWM output was updated.
Thread.Sleep(10);
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, (LJUD.CHANNEL) 1, 0, 0);
LJUD.ePut(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, (LJUD.CHANNEL) 2, 0, 0);
//Wait a little so we are sure a duty cycle measurement has been attempted.
Thread.Sleep(10);
//Read from Timer1.
ReadDutyCycle(ue9.ljhandle, 1);
//Read from Timer2.
ReadDutyCycle(ue9.ljhandle, 2);
//Disable all timers and counters, and the FIO lines will return to digital I/O.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 0, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 1, 0, 0, 0);
LJUD.GoOne(ue9.ljhandle);
Console.ReadLine(); // Pause for user
}
public void performActions()
{
long i = 0, k = 0;
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0, dblCommBacklog = 0;
// Dummy variables to satisfy certain method signatures
double dummyDouble = 0;
int dummyInt = 0;
double[] dummyDoubleArray = { 0.0 };
//The actual scan rate is determined by the external clock, but we need
//an idea of how fast the scan rate will be so that we can make
//the buffers big enough. Also, the driver needs to have an idea of the
//expected scan rate to help it decide how big of packets to transfer.
double scanRate = 1000;
int delayms = 1000;
double numScans = 2000; //2x the expected # of scans (2*scanRate*delayms/1000)
double numScansRequested;
double[] adblData = new double[12000]; //Max buffer size (#channels*numScansRequested)
// Open UE9
try
{
ue9 = new UE9(LJUD.CONNECTION.USB, "0", true); // Connection through USB
//ue9 = new UE9(LJUD.CONNECTION.ETHERNET, "192.168.1.50", true); // Connection through ethernet
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
try
{
//Make sure the UE9 is not streaming.
LJUD.eGet(ue9.ljhandle, LJUD.IO.STOP_STREAM, (LJUD.CHANNEL) 0, ref dummyDouble, 0);
}
catch (LabJackUDException e)
{
// If the error indicates that the stream could not be stopped it is because the stream has not started yet and can be ignored
if (e.LJUDError != LJUD.LJUDERROR.UNABLE_TO_STOP_STREAM)
{
showErrorMessage(e);
}
}
try
{
//Disable all timers and counters to put everything in a known initial state.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 0, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 1, 0, 0, 0);
LJUD.GoOne(ue9.ljhandle);
//First we will configure Timer0 as system timer low and configure Timer1 to
//output a 1000 Hz square wave.
//Use the fixed 750kHz timer clock source.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_CLOCK_BASE, (double)LJUD.TIMERCLOCKS.KHZ750, 0, 0);
//Set the divisor to 3 so the actual timer clock is 250 kHz.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_CLOCK_DIVISOR, 3, 0, 0);
//Enable 2 timers. They will use FIO0-FIO1.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 2, 0, 0);
//Configure Timer0 as system timer low.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_MODE, (LJUD.CHANNEL) 0, (double)LJUD.TIMERMODE.SYSTIMERLOW, 0, 0);
//Configure Timer1 as frequency output.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_MODE, (LJUD.CHANNEL) 1, (double)LJUD.TIMERMODE.FREQOUT, 0, 0);
//Set the frequency output on Timer1 to 1000 Hz (250000/(2*125) = 1000).
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_VALUE, 1, 125, 0, 0);
//Execute the requests on a single LabJack. The driver will use a
//single low-level TimerCounter command to handle all the requests above.
LJUD.GoOne(ue9.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Get all the results just to check for errors.
bool isFinished = false;
try { LJUD.GetFirstResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e) { showErrorMessage(e); }
while (!isFinished)
{
try
{
LJUD.GetNextResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
showErrorMessage(e);
}
}
}
try
{
//Configure the stream:
//Configure resolution for all analog inputs. Since the test external clock
//is at 1000 Hz, and we are scanning 6 channels, we will have a
//sample rate of 6000 samples/second. That means the maximum resolution
//we could use is 13-bit. We will use 12-bit in this example.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.AIN_RESOLUTION, 12, 0, 0);
//Configure the analog input range on channel 0 for bipolar +-5 volts.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_AIN_RANGE, 0, (double)LJUD.RANGES.BIP5V, 0, 0);
//Configure the analog input range on channel 1 for bipolar +-5 volts.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_AIN_RANGE, 1, (double)LJUD.RANGES.BIP5V, 0, 0);
//Give the driver a 5 second buffer (scanRate * 6 channels * 5 seconds).
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_BUFFER_SIZE, scanRate * 6 * 5, 0, 0);
//Configure reads to retrieve whatever data is available without waiting (wait mode LJ_swNONE).
//See comments below to change this program to use LJ_swSLEEP mode.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_WAIT_MODE, (double)LJUD.STREAMWAITMODES.NONE, 0, 0);
//Configure for external triggering.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_EXTERNAL_TRIGGER, 1, 0, 0);
//Define the scan list.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.CLEAR_STREAM_CHANNELS, 0, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 0, 0, 0, 0); //AIN0
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 1, 0, 0, 0); //AIN1
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 193, 0, 0, 0); //EIO_FIO
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 194, 0, 0, 0); //MIO_CIO
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 200, 0, 0, 0); //Timer0 LSW
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 224, 0, 0, 0); //Timer0 MSW
//Execute the list of requests.
LJUD.GoOne(ue9.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Get all the results just to check for errors.
try { LJUD.GetFirstResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e) { showErrorMessage(e); }
isFinished = false;
while (!isFinished)
{
try
{
LJUD.GetNextResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
showErrorMessage(e);
}
}
}
try
{
//Start the stream.
LJUD.eGet(ue9.ljhandle, LJUD.IO.START_STREAM, 0, ref dblValue, 0);
//Read data
while (Win32Interop._kbhit() == 0) //Loop will run until any key is hit
{
//Since we are using wait mode LJUD.STREAMWAITMODES.NONE, we will wait a little, then
//read however much data is available. Thus this delay will control how
//fast the program loops and how much data is read each loop. An
//alternative common method is to use wait mode LJUD.STREAMWAITMODES.SLEEP where the
//stream read waits for a certain number of scans. In such a case
//you would not have a delay here, since the stream read will actually
//control how fast the program loops.
//
//To change this program to use sleep mode,
// -change numScans to the actual number of scans desired per read,
// -change wait mode addrequest value to LJ_swSLEEP,
// -comment out the following Sleep command.
Thread.Sleep(delayms); //Remove if using LJUD.STREAMWAITMODES.SLEEP
//init array so we can easily tell if it has changed
for (k = 0; k < numScans * 2; k++)
{
adblData[k] = 9999.0;
}
//Read the data. We will request twice the number we expect, to
//make sure we get everything that is available.
//Note that the array we pass must be sized to hold enough SAMPLES, and
//the Value we pass specifies the number of SCANS to read.
numScansRequested = numScans;
LJUD.eGet(ue9.ljhandle, LJUD.IO.GET_STREAM_DATA, LJUD.CHANNEL.ALL_CHANNELS, ref numScansRequested, adblData);
//This displays the number of scans that were actually read.
Console.Out.WriteLine("\nIteration # {0:0.###}\n", i);
Console.Out.WriteLine("Number read = {0:0.###}\n", numScansRequested);
//This displays just the first scan.
Console.Out.WriteLine("First scan = {0:0.###},{0:0.###},{0:0.###},{0:0.###},{0:0.###},{0:0.###}\n", adblData[0], adblData[1], adblData[2], adblData[3], adblData[4], adblData[5]);
//Retrieve the current Comm backlog. The UD driver retrieves stream data from
//the UE9 in the background, but if the computer is too slow for some reason
//the driver might not be able to read the data as fast as the UE9 is
//acquiring it, and thus there will be data left over in the UE9 buffer.
LJUD.eGet(ue9.ljhandle, LJUD.IO.GET_CONFIG, LJUD.CHANNEL.STREAM_BACKLOG_COMM, ref dblCommBacklog, 0);
Console.Out.WriteLine("Comm Backlog = {0:0.###}\n", dblCommBacklog);
i++;
}
//Stop the stream
LJUD.eGet(ue9.ljhandle, LJUD.IO.STOP_STREAM, 0, ref dummyDouble, 0);
//Disable the timers.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 0, 0, 0);
LJUD.GoOne(ue9.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
Console.Out.WriteLine("\nDone");
Console.ReadLine(); // Pause for user
return;
}
/// <summary>
/// Actually performs actions on the U3 and updates the displaye
/// </summary>
/// <param name="sender">The object that executed this method</param>
/// <param name="e">Event parameters</param>
private void goButton_Click(object sender, System.EventArgs e)
{
double dblDriverVersion;
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double Value0 = 9999, Value1 = 9999, Value2 = 9999;
double ValueDIBit = 9999, ValueDIPort = 9999, ValueCounter = 9999;
// Variables to satisfy certain method signatures
int dummyInt = 0;
double dummyDouble = 0;
//Read and display the UD version.
dblDriverVersion = LJUD.GetDriverVersion();
versionDisplay.Text = String.Format("{0:0.000}", dblDriverVersion);
try
{
//Open the first found LabJack U3.
u3 = new U3(LJUD.CONNECTION.USB, "0", true); // Connection through USB
//Start by using the pin_configuration_reset IOType so that all
//pin assignments are in the factory default condition.
LJUD.ePut(u3.ljhandle, LJUD.IO.PIN_CONFIGURATION_RESET, 0, 0, 0);
//First some configuration commands. These will be done with the ePut
//function which combines the add/go/get into a single call.
//Configure FIO0-FIO3 as analog, all else as digital. That means we
//will start from channel 0 and update all 16 flexible bits. We will
//pass a value of b0000000000001111 or d15.
LJUD.ePut(u3.ljhandle, LJUD.IO.PUT_ANALOG_ENABLE_PORT, 0, 15, 16);
//Set the timer/counter pin offset to 7, which will put the first
//timer/counter on FIO7.
LJUD.ePut(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_COUNTER_PIN_OFFSET, 7, 0);
//Enable Counter1 (FIO7).
LJUD.ePut(u3.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, (LJUD.CHANNEL) 1, 1, 0);
//The following commands will use the add-go-get method to group
//multiple requests into a single low-level function.
//Request a single-ended reading from AIN0.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.GET_AIN, 0, 0, 0, 0);
//Request a single-ended reading from AIN1.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.GET_AIN, 1, 0, 0, 0);
//Request a reading from AIN2 using the Special range.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.GET_AIN_DIFF, 2, 0, 32, 0);
//Read digital input FIO5.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.GET_DIGITAL_BIT, 5, 0, 0, 0);
//Read digital inputs FIO5 through FIO6.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.GET_DIGITAL_PORT, 5, 0, 2, 0);
//Request the value of Counter1 (FIO7).
LJUD.AddRequest(u3.ljhandle, LJUD.IO.GET_COUNTER, 1, 0, 0, 0);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
try
{
//Execute the requests.
LJUD.GoOne(u3.ljhandle);
//Get all the results. The input measurement results are stored. All other
//results are for configuration or output requests so we are just checking
//whether there was an error.
LJUD.GetFirstResult(u3.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
bool finished = false;
while (!finished)
{
switch (ioType)
{
case LJUD.IO.GET_AIN:
switch ((int)channel)
{
case 0:
Value0 = dblValue;
break;
case 1:
Value1 = dblValue;
break;
}
break;
case LJUD.IO.GET_AIN_DIFF:
Value2 = dblValue;
break;
case LJUD.IO.GET_DIGITAL_BIT:
ValueDIBit = dblValue;
break;
case LJUD.IO.GET_DIGITAL_PORT:
ValueDIPort = dblValue;
break;
case LJUD.IO.GET_COUNTER:
ValueCounter = dblValue;
break;
}
try { LJUD.GetNextResult(u3.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException exc)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (exc.LJUDError == U3.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
finished = true;
}
else
{
ShowErrorMessage(exc);
}
}
}
// Display results
ain0Display.Text = String.Format("{0:0.###}", Value0);
ain1Display.Text = String.Format("{0:0.###}", Value1);
ain2Display.Text = String.Format("{0:0.###}", Value2);
fio5Display.Text = String.Format("{0:0.###}", ValueDIBit);
fio6Display.Text = String.Format("{0:0.###}", ValueDIPort); //Will read 3 (binary 11) if both lines are pulled-high as normal.
counter1Display.Text = String.Format("{0:0.###}", ValueCounter);
}
public void performActions()
{
long i = 0, k = 0;
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0, dblCommBacklog = 0, dblUDBacklog = 0;
double scanRate = 1000; //scan rate = sample rate / #channels
int delayms = 1000;
double numScans = 2000; //Max number of scans per read. 2x the expected # of scans (2*scanRate*delayms/1000).
double numScansRequested;
double[] adblData = new double[4000]; //Max buffer size (#channels*numScansRequested)
// Dummy variables to satisfy certain method signatures
double dummyDouble = 0;
double[] dummyDoubleArray = { 0 };
int dummyInt = 0;
// Open U6
try
{
u6 = new U6(LJUD.CONNECTION.USB, "0", true); // Connection through USB
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
try
{
//Configure the stream:
//Configure the resolution of the analog inputs (pass a non-zero value for quick sampling).
//See section 2.6 / 3.1 for more information.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.AIN_RESOLUTION, 0, 0, 0);
//Configure the analog input range on channel 0 for bipolar +-10 volts.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_AIN_RANGE, 0, (double)LJUD.RANGES.BIP10V, 0, 0);
//Set the scan rate.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_SCAN_FREQUENCY, scanRate, 0, 0);
//Give the driver a 5 second buffer (scanRate * 2 channels * 5 seconds).
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_BUFFER_SIZE, scanRate * 2 * 5, 0, 0);
//Configure reads to retrieve whatever data is available without waiting (wait mode LJUD.STREAMWAITMODES.NONE).
//See comments below to change this program to use LJUD.STREAMWAITMODES.SLEEP mode.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_WAIT_MODE, (double)LJUD.STREAMWAITMODES.NONE, 0, 0);
//Define the scan list as AIN0 then AIN1.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.CLEAR_STREAM_CHANNELS, 0, 0, 0, 0);
LJUD.AddRequest(u6.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 0, 0, 0, 0);
LJUD.AddRequest(u6.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 1, 0, 0, 0);
//Execute the list of requests.
LJUD.GoOne(u6.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
// Get results until there is no more data available for error checking
bool isFinished = false;
while (!isFinished)
{
try { LJUD.GetNextResult(u6.ljhandle, ref ioType, ref channel, ref dummyDouble, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == U6.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
showErrorMessage(e);
}
}
}
//Start the stream.
LJUD.eGet(u6.ljhandle, LJUD.IO.START_STREAM, 0, ref dblValue, 0);
//The actual scan rate is dependent on how the desired scan rate divides into
//the LabJack clock. The actual scan rate is returned in the value parameter
//from the start stream command.
Console.Out.WriteLine("Actual Scan Rate = {0:0.###}\n", dblValue);
Console.Out.WriteLine("Actual Sample Rate = {0:0.###}\n", 2 * dblValue);
//Read data
while (Win32Interop._kbhit() == 0) //Loop will run until any key is hit
{
//Since we are using wait mode LJUD.STREAMWAITMODES.NONE, we will wait a little, then
//read however much data is available. Thus this delay will control how
//fast the program loops and how much data is read each loop. An
//alternative common method is to use wait mode LJUD.STREAMWAITMODES.SLEEP where the
//stream read waits for a certain number of scans. In such a case
//you would not have a delay here, since the stream read will actually
//control how fast the program loops.
//
//To change this program to use sleep mode,
// -change numScans to the actual number of scans desired per read,
// -change wait mode addrequest value to LJUD.STREAMWAITMODES.SLEEP,
// -comment out the following Thread.Sleep command.
Thread.Sleep(delayms); //Remove if using LJUD.STREAMWAITMODES.SLEEP.
//init array so we can easily tell if it has changed
for (k = 0; k < numScans * 2; k++)
{
adblData[k] = 9999.0;
}
//Read the data. We will request twice the number we expect, to
//make sure we get everything that is available.
//Note that the array we pass must be sized to hold enough SAMPLES, and
//the Value we pass specifies the number of SCANS to read.
numScansRequested = numScans;
LJUD.eGet(u6.ljhandle, LJUD.IO.GET_STREAM_DATA, LJUD.CHANNEL.ALL_CHANNELS, ref numScansRequested, adblData);
//The displays the number of scans that were actually read.
Console.Out.WriteLine("\nIteration # {0:0}\n", i);
Console.Out.WriteLine("Number scans read = {0:0}\n", numScansRequested);
//Display just the first scan.
Console.Out.WriteLine("First scan = {0:0.###}, {1:0.###}\n", adblData[0], adblData[1]);
//Retrieve the current Comm backlog. The UD driver retrieves stream data from
//the U6 in the background, but if the computer is too slow for some reason
//the driver might not be able to read the data as fast as the U6 is
//acquiring it, and thus there will be data left over in the U6 buffer.
LJUD.eGet(u6.ljhandle, LJUD.IO.GET_CONFIG, LJUD.CHANNEL.STREAM_BACKLOG_COMM, ref dblCommBacklog, 0);
Console.Out.WriteLine("Comm Backlog = {0:0.###}\n", dblCommBacklog);
//Retrieve the current UD driver backlog. If this is growing, then the application
//software is not pulling data from the UD driver fast enough.
LJUD.eGet(u6.ljhandle, LJUD.IO.GET_CONFIG, LJUD.CHANNEL.STREAM_BACKLOG_UD, ref dblUDBacklog, 0);
Console.Out.WriteLine("UD Backlog = {0:0.###}\n", dblUDBacklog);
i++;
}
//Stop the stream
LJUD.eGet(u6.ljhandle, LJUD.IO.STOP_STREAM, 0, ref dummyDouble, dummyDoubleArray);
Console.Out.WriteLine("\nDone");
Console.ReadLine(); // Pause for user
}
public void performActions()
{
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double numSPIBytesToTransfer;
byte[] dataArray = new byte[50];
// Variables to satsify certain method signatures
int dummyInt = 0;
double dummyDouble = 0;
try
{
//Open the LabJack U3.
u3 = new U3(LJUD.CONNECTION.USB, "0", true); // Connection through USB
//Start by using the pin_configuration_reset IOType so that all
//pin assignments are in the factory default condition.
LJUD.ePut(u3.ljhandle, LJUD.IO.PIN_CONFIGURATION_RESET, 0, 0, 0);
//First, configure the SPI communication.
//Enable automatic chip-select control.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.SPI_AUTO_CS, 1, 0, 0);
//Do not disable automatic digital i/o direction configuration.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.SPI_DISABLE_DIR_CONFIG, 0, 0, 0);
//Mode A: CPHA=1, CPOL=1.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.SPI_MODE, 0, 0, 0);
//125kHz clock.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.SPI_CLOCK_FACTOR, 0, 0, 0);
//MOSI is FIO6
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.SPI_MOSI_PIN_NUM, 6, 0, 0);
//MISO is FIO7
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.SPI_MISO_PIN_NUM, 7, 0, 0);
//CLK is FIO4
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.SPI_CLK_PIN_NUM, 4, 0, 0);
//CS is FIO5
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.SPI_CS_PIN_NUM, 5, 0, 0);
//Execute the requests on a single LabJack. The driver will use a
//single low-level TimerCounter command to handle all the requests above.
LJUD.GoOne(u3.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Get all the results just to check for errors.
try { LJUD.GetFirstResult(u3.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e) { showErrorMessage(e); }
bool finished = false;
while (!finished)
{
try { LJUD.GetNextResult(u3.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
finished = true;
}
else
{
showErrorMessage(e);
}
}
}
//This example transfers 4 test bytes.
numSPIBytesToTransfer = 4;
dataArray[0] = 170;
dataArray[1] = 240;
dataArray[2] = 170;
dataArray[3] = 240;
//Transfer the data. The write and read is done at the same time.
try{ LJUD.eGet(u3.ljhandle, LJUD.IO.SPI_COMMUNICATION, 0, ref numSPIBytesToTransfer, dataArray); }
catch (LabJackUDException e) { showErrorMessage(e); }
//Display the read data.
Console.Out.WriteLine("dataArray[0] = {0:0.#}\n", dataArray[0]);
Console.Out.WriteLine("dataArray[1] = {0:0.#}\n", dataArray[1]);
Console.Out.WriteLine("dataArray[2] = {0:0.#}\n", dataArray[2]);
Console.Out.WriteLine("dataArray[3] = {0:0.#}\n", dataArray[3]);
Console.ReadLine(); // Pause for user
}
public void performActions()
{
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double numI2CBytesToWrite;
double numI2CBytesToRead;
byte[] writeArray = new byte[128];
byte[] readArray = new byte[128];
long i = 0;
long serialNumber = 0;
double slopeDACA = 0, offsetDACA = 0, slopeDACB = 0, offsetDACB = 0;
double writeACKS = 0, expectedACKS = 0;
byte[] bytes;
// Dummy variables to satify certain method signatures
double dummyDouble = 0;
int dummyInt = 0;
// Setup random number generator
Random random = new Random();
//Open the LabJack.
try
{
device = new UE9(LJUD.CONNECTION.USB, "0", true); // Connection through USB
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Configure the I2C communication.
//The address of the EEPROM on the LJTick-DAC is 0xA0.
LJUD.AddRequest(device.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.I2C_ADDRESS_BYTE, 160, 0, 0);
//SCL is FIO0
LJUD.AddRequest(device.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.I2C_SCL_PIN_NUM, 0, 0, 0);
//SDA is FIO1
LJUD.AddRequest(device.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.I2C_SDA_PIN_NUM, 1, 0, 0);
//See description of low-level I2C function.
LJUD.AddRequest(device.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.I2C_OPTIONS, 0, 0, 0);
//See description of low-level I2C function. 0 is max speed of about 130 kHz.
LJUD.AddRequest(device.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.I2C_SPEED_ADJUST, 0, 0, 0);
//Execute the requests on a single LabJack.
LJUD.GoOne(device.ljhandle);
//Get all the results just to check for errors.
LJUD.GetFirstResult(device.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
bool finished = false;
while (!finished)
{
try{ LJUD.GetNextResult(device.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
if (e.LJUDError == LJUD.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
finished = true;
}
else
{
showErrorMessage(e);
}
}
}
//Initial read of EEPROM bytes 0-3 in the user memory area.
//We need a single I2C transmission that writes the address and then reads
//the data. That is, there needs to be an ack after writing the address,
//not a stop condition. To accomplish this, we use Add/Go/Get to combine
//the write and read into a single low-level call.
numI2CBytesToWrite = 1;
writeArray[0] = 0; //Memory address. User area is 0-63.
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, numI2CBytesToWrite, writeArray, 0);
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, 0, 0, 0);
numI2CBytesToRead = 4;
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_READ, numI2CBytesToRead, readArray, 0);
//Execute the requests.
LJUD.GoOne(device.ljhandle);
//Get the result of the write just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, ref dummyDouble);
//Get the write ACKs and compare to the expected value. We expect bit 0 to be
//the ACK of the last data byte progressing up to the ACK of the address
//byte (data bytes only for Control firmware 1.43 and less). So if n is the
//number of data bytes, the ACKs value should be (2^(n+1))-1.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, ref writeACKS);
expectedACKS = Math.Pow(2, numI2CBytesToWrite + 1) - 1;
if (writeACKS != expectedACKS)
{
Console.Out.WriteLine("Expected ACKs = {0:0}, Received ACKs = %0.f\n", expectedACKS, writeACKS);
}
//When the GoOne processed the read request, the read data was put into the readArray buffer that
//we passed, so this GetResult is also just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_READ, ref dummyDouble);
//Display the first 4 elements.
Console.Out.WriteLine("Read User Mem [0-3] = {0:0.#}, {1:0.#}, {2:0.#}, {3:0.#}\n", readArray[0], readArray[1], readArray[2], readArray[3]);
//Write EEPROM bytes 0-3 in the user memory area, using the page write technique. Note
//that page writes are limited to 16 bytes max, and must be aligned with the 16-byte
//page intervals. For instance, if you start writing at address 14, you can only write
//two bytes because byte 16 is the start of a new page.
numI2CBytesToWrite = 5;
writeArray[0] = 0; //Memory address. User area is 0-63.
//Create 4 new pseudo-random numbers to write.
for (i = 1; i < 5; i++)
{
writeArray[i] = (byte)random.Next(256);
}
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, numI2CBytesToWrite, writeArray, 0);
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, 0, 0, 0);
//Execute the requests.
LJUD.GoOne(device.ljhandle);
//Get the result of the write just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, ref dummyDouble);
//Get the write ACKs and compare to the expected value. We expect bit 0 to be
//the ACK of the last data byte progressing up to the ACK of the address
//byte (data bytes only for Control firmware 1.43 and less). So if n is the
//number of data bytes, the ACKs value should be (2^(n+1))-1.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, ref writeACKS);
expectedACKS = Math.Pow(2, numI2CBytesToWrite + 1) - 1;
if (writeACKS != expectedACKS)
{
Console.Out.WriteLine("Expected ACKs = {0:0}, Received ACKs = %0.f\n", expectedACKS, writeACKS);
}
//Delay to allow the EEPROM to complete the write cycle. Datasheet says 1.5 ms max.
System.Threading.Thread.Sleep(2);
Console.Out.WriteLine("Write User Mem [0-3] = {0:0.#}, {1:0.#}, {2:0.#}, {3:0.#}\n", writeArray[1], writeArray[2], writeArray[3], writeArray[4]);
//Final read of EEPROM bytes 0-3 in the user memory area.
//We need a single I2C transmission that writes the address and then reads
//the data. That is, there needs to be an ack after writing the address,
//not a stop condition. To accomplish this, we use Add/Go/Get to combine
//the write and read into a single low-level call.
numI2CBytesToWrite = 1;
writeArray[0] = 0; //Memory address. User area is 0-63.
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, numI2CBytesToWrite, writeArray, 0);
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, 0, 0, 0);
numI2CBytesToRead = 4;
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_READ, numI2CBytesToRead, readArray, 0);
//Execute the requests.
LJUD.GoOne(device.ljhandle);
//Get the result of the write just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, ref dummyDouble);
//Get the write ACKs and compare to the expected value. We expect bit 0 to be
//the ACK of the last data byte progressing up to the ACK of the address
//byte (data bytes only for Control firmware 1.43 and less). So if n is the
//number of data bytes, the ACKs value should be (2^(n+1))-1.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, ref writeACKS);
expectedACKS = Math.Pow(2, numI2CBytesToWrite + 1) - 1;
if (writeACKS != expectedACKS)
{
Console.Out.WriteLine("Expected ACKs = {0:0}, Received ACKs = %0.f\n", expectedACKS, writeACKS);
}
//When the GoOne processed the read request, the read data was put into the readArray buffer that
//we passed, so this GetResult is also just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_READ, ref dummyDouble);
//Display the first 4 elements.
Console.Out.WriteLine("Read User Mem [0-3] = {0:0.#}, {1:0.#}, {2:0.#}, {3:0.#}\n\n", readArray[0], readArray[1], readArray[2], readArray[3]);
//Read cal constants and serial number.
//We need a single I2C transmission that writes the address and then reads
//the data. That is, there needs to be an ack after writing the address,
//not a stop condition. To accomplish this, we use Add/Go/Get to combine
//the write and read into a single low-level call.
//
//64-71 DACA Slope
//72-79 DACA Offset
//80-87 DACB Slope
//88-95 DACB Offset
//96-99 Serial Number
//
numI2CBytesToWrite = 1;
writeArray[0] = 64; //Memory address. Cal constants start at 64.
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, numI2CBytesToWrite, writeArray, 0);
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, 0, 0, 0);
numI2CBytesToRead = 36;
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_READ, numI2CBytesToRead, readArray, 0);
//Execute the requests.
LJUD.GoOne(device.ljhandle);
//Get the result of the write just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, ref dummyDouble);
//Get the write ACKs and compare to the expected value. We expect bit 0 to be
//the ACK of the last data byte progressing up to the ACK of the address
//byte (data bytes only for Control firmware 1.43 and less). So if n is the
//number of data bytes, the ACKs value should be (2^(n+1))-1.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, ref writeACKS);
expectedACKS = Math.Pow(2, numI2CBytesToWrite + 1) - 1;
if (writeACKS != expectedACKS)
{
Console.Out.WriteLine("Expected ACKs = {0:0}, Received ACKs = %0.f\n", expectedACKS, writeACKS);
}
//When the GoOne processed the read request, the read data was put into the readArray buffer that
//we passed, so this GetResult is also just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_READ, ref dummyDouble);
//Convert fixed point values to floating point doubles.
slopeDACA = BitConverter.ToInt64(readArray, 0) / (double)4294967296;
offsetDACA = BitConverter.ToInt64(readArray, 8) / (double)4294967296;
slopeDACB = BitConverter.ToInt64(readArray, 16) / (double)4294967296;
offsetDACB = BitConverter.ToInt64(readArray, 24) / (double)4294967296;
Console.Out.WriteLine("DACA Slope = {0:0.0} bits/volt\n", slopeDACA);
Console.Out.WriteLine("DACA Offset = {0:0.0} bits\n", offsetDACA);
Console.Out.WriteLine("DACB Slope = {0:0.0} bits/volt\n", slopeDACB);
Console.Out.WriteLine("DACB Offset = {0:0.0} bits\n", offsetDACB);
//Convert serial number bytes to long.
serialNumber = (int)readArray[32] + ((int)readArray[33] << 8) + ((int)readArray[34] << 16) + ((int)readArray[35] << 24);
Console.Out.WriteLine("Serial Number = {0:0.#}\n\n", serialNumber);
//Update both DAC outputs.
//Set the I2C address in the UD driver so that we not talk to the DAC chip.
//The address of the DAC chip on the LJTick-DAC is 0x24.
LJUD.ePut(device.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.I2C_ADDRESS_BYTE, 36, 0);
///Set DACA to 2.3 volts.
numI2CBytesToWrite = 3;
writeArray[0] = 48; //Write and update DACA.
writeArray[1] = Convert.ToByte((ulong)((2.3 * slopeDACA) + offsetDACA) / 256); //Upper byte of binary DAC value.
writeArray[2] = Convert.ToByte((ulong)((2.3 * slopeDACA) + offsetDACA) % 256); //Lower byte of binary DAC value.
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, numI2CBytesToWrite, writeArray, 0);
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, 0, 0, 0);
//Execute the requests.
LJUD.GoOne(device.ljhandle);
//Get the result of the write just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, ref dummyDouble);
//Get the write ACKs and compare to the expected value. We expect bit 0 to be
//the ACK of the last data byte progressing up to the ACK of the address
//byte (data bytes only for Control firmware 1.43 and less). So if n is the
//number of data bytes, the ACKs value should be (2^(n+1))-1.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, ref writeACKS);
expectedACKS = Math.Pow(2, numI2CBytesToWrite + 1) - 1;
if (writeACKS != expectedACKS)
{
Console.Out.WriteLine("Expected ACKs = {0:0}, Received ACKs = %0.f\n", expectedACKS, writeACKS);
}
Console.Out.WriteLine("DACA set to 2.3 volts\n\n");
//Set DACB to 1.5 volts.
numI2CBytesToWrite = 3;
writeArray[0] = 49; //Write and update DACB.
writeArray[1] = Convert.ToByte((ulong)((1.5 * slopeDACB) + offsetDACB) / 256); //Upper byte of binary DAC value.
writeArray[2] = Convert.ToByte((ulong)((1.5 * slopeDACB) + offsetDACB) % 256); //Lower byte of binary DAC value.
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, numI2CBytesToWrite, writeArray, 0);
LJUD.AddRequest(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, 0, 0, 0);
//Execute the requests.
LJUD.GoOne(device.ljhandle);
//Get the result of the write just to check for an error.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_WRITE, ref dummyDouble);
//Get the write ACKs and compare to the expected value. We expect bit 0 to be
//the ACK of the last data byte progressing up to the ACK of the address
//byte (data bytes only for Control firmware 1.43 and less). So if n is the
//number of data bytes, the ACKs value should be (2^(n+1))-1.
LJUD.GetResult(device.ljhandle, LJUD.IO.I2C_COMMUNICATION, LJUD.CHANNEL.I2C_GET_ACKS, ref writeACKS);
expectedACKS = Math.Pow(2, numI2CBytesToWrite + 1) - 1;
if (writeACKS != expectedACKS)
{
Console.Out.WriteLine("Expected ACKs = {0:0}, Received ACKs = %0.f\n", expectedACKS, writeACKS);
}
Console.Out.WriteLine("DACB set to 1.5 volts\n");
Console.ReadLine(); // Pause for user return;
}
/// <summary>
/// Opens the LabJack, gets the UD driver version, and
/// configures the device.
/// </summary>
/// <param name="sender">The object that called this event</param>
/// <param name="e">Event details</param>
private void TimedWindow_Load(object sender, System.EventArgs e)
{
double dblDriverVersion;
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
// dummy variables to satisfy certian method signatures
double dummyDouble = 0;
int dummyInt = 0;
// Create the event timer but do not start it yet
updateTimer = new System.Timers.Timer();
updateTimer.Elapsed += new ElapsedEventHandler(TimerEvent);
updateTimer.Interval = TIMER_INTERVAL;
// Disable the start button while the device is loading
goStopButton.Enabled = false;
Update();
//Read and display the UD version.
dblDriverVersion = LJUD.GetDriverVersion();
versionDisplay.Text = String.Format("{0:0.000}", dblDriverVersion);
// Open and configure UE9
try
{
//Open the device
ue9 = new UE9(LJUD.CONNECTION.USB, "0", true);
//Configure for 16-bit analog input measurements.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.AIN_RESOLUTION, 16, 0, 0);
//Configure the analog input range on channels 2 and 3 for bipolar 5v.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_AIN_RANGE, (LJUD.CHANNEL) 2, (double)LJUD.RANGES.BIP5V, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_AIN_RANGE, (LJUD.CHANNEL) 3, (double)LJUD.RANGES.BIP5V, 0, 0);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
try
{
//Execute the requests.
LJUD.GoOne(ue9.ljhandle);
//Get all the results. The input measurement results are stored. All other
//results are for configuration or output requests so we are just checking
//whether there was an error. The rest of the results are in the below loop.
LJUD.GetFirstResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
bool isFinished = false;
while (!isFinished)
{
try { LJUD.GetNextResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException exc)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (exc.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
ShowErrorMessage(exc);
return;
}
}
}
// Enable the start button
goStopButton.Enabled = true;
}
/// <summary>
/// performs read on LabJack device
/// </summary>
/// <param name="source">The object that called the event</param>
/// <param name="e">Event details</param>
public void TimerEvent(object source, ElapsedEventArgs e)
{
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double Value2 = 0, Value3 = 0;
double ValueDIBit = 0;
// dummy variables to satisfy certian method signatures
double dummyDouble = 0;
int dummyInt = 0;
try
{
//Now we add requests to write and read I/O. These requests
//will be processed repeatedly by go/get statements in every
//iteration of the while loop below.
//Request AIN2 and AIN3.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.GET_AIN, 2, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.GET_AIN, 3, 0, 0, 0);
//Read digital input FIO1.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.GET_DIGITAL_BIT, 1, 0, 0, 0);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
try
{
//Execute the requests.
LJUD.GoOne(ue9.ljhandle);
//Get all the results. The input measurement results are stored. All other
//results are for configuration or output requests so we are just checking
//whether there was an error. The rest of the results are in the below loop.
LJUD.GetFirstResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
bool isFinished = false;
while (!isFinished)
{
switch (ioType)
{
case LJUD.IO.GET_AIN:
switch ((int)channel)
{
case 2:
Value2 = dblValue;
break;
case 3:
Value3 = dblValue;
break;
}
break;
case LJUD.IO.GET_DIGITAL_BIT:
ValueDIBit = dblValue;
break;
}
try { LJUD.GetNextResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException exc)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (exc.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
ShowErrorMessage(exc);
return;
}
}
}
// Display results
ain2Display.Text = String.Format("{0:0.###}", Value2);
ain3Display.Text = String.Format("{0:0.###}", Value3);
fio1Display.Text = String.Format("{0:0.###}", ValueDIBit);
}
public void performActions()
{
long lngGetNextIteration;
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
// Dummy variables to complete certain method signatures
int dummyInt = 0;
double dummyDouble = 0;
// Open UE9
try
{
ue9 = new UE9(LJUD.CONNECTION.USB, "0", true); // Connection through USB
//ue9 = new UE9(LJUD.CONNECTION.ETHERNET, "192.168.1.50", true); // Connection through ethernet
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
try
{
//Disable all timers and counters to put everything in a known initial state.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 0, 0, 0, 0);
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 1, 0, 0, 0);
LJUD.GoOne(ue9.ljhandle);
//First enable the quadrature input.
//Enable 2 timers for phases A and B. They will use FIO0 and FIO1.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 2, 0, 0);
//Configure Timer0 as quadrature.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_MODE, 0, (double)LJUD.TIMERMODE.QUAD, 0, 0);
//Configure Timer1 as quadrature.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_TIMER_MODE, 1, (double)LJUD.TIMERMODE.QUAD, 0, 0);
//Execute the requests on a single LabJack. The driver will use a
//single low-level TimerCounter command to handle all the requests above.
LJUD.GoOne(ue9.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Get all the results just to check for errors.
try { LJUD.GetFirstResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e) { showErrorMessage(e); }
bool isFinished = false;
while (!isFinished)
{
try
{
LJUD.GetNextResult(ue9.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
showErrorMessage(e);
}
}
}
try
{
while (Win32Interop._kbhit() == 0) //Program will run until any key is hit
{
//Wait 500 milliseconds
Thread.Sleep(500);
//Request a read from Timer0. Timer0 and Timer1 both return the same
//quadrature value.
LJUD.eGet(ue9.ljhandle, LJUD.IO.GET_TIMER, 0, ref dblValue, 0);
Console.Out.WriteLine("Quad Counter = {0:0.0}\n", dblValue);
}
//Disable the timers and the FIO lines will return to digital I/O.
LJUD.AddRequest(ue9.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 0, 0, 0);
LJUD.GoOne(ue9.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
Console.ReadLine(); // Pause for user
}
/// <summary>
/// Actually performs actions on the U6 and updates the displaye
/// </summary>
/// <param name="sender">The object that executed this method</param>
/// <param name="e">Event parameters</param>
private void goButton_Click(object sender, System.EventArgs e)
{
double dblDriverVersion;
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double Value2 = 0, Value3 = 0;
double ValueDIBit = 0, ValueDIPort = 0, ValueCounter = 0;
// dummy variables to satisfy certian method signatures
double dummyDouble = 0;
int dummyInt = 0;
//Read and display the UD version.
dblDriverVersion = LJUD.GetDriverVersion();
versionDisplay.Text = String.Format("{0:0.000}", dblDriverVersion);
// Open U6
try
{
u6 = new U6(LJUD.CONNECTION.USB, "0", true);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
try
{
//First some configuration commands. These will be done with the ePut
//function which combines the add/go/get into a single call.
//Configure the resolution of the analog inputs (pass a non-zero value for quick sampling).
//See section 2.6 / 3.1 for more information.
LJUD.ePut(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.AIN_RESOLUTION, 0, 0);
//Configure the analog input range on channels 2 and 3 for bipolar 10v.
LJUD.ePut(u6.ljhandle, LJUD.IO.PUT_AIN_RANGE, (LJUD.CHANNEL) 2, (double)LJUD.RANGES.BIP10V, 0);
LJUD.ePut(u6.ljhandle, LJUD.IO.PUT_AIN_RANGE, (LJUD.CHANNEL) 3, (double)LJUD.RANGES.BIP10V, 0);
//Enable Counter0 which will appear on FIO0 (assuming no other
//program has enabled any timers or Counter1).
LJUD.ePut(u6.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 0, 1, 0);
//Now we add requests to write and read I/O. These requests
//will be processed repeatedly by go/get statements in every
//iteration of the while loop below.
//Request AIN2 and AIN3.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN, 2, 0, 0, 0);
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN, 3, 0, 0, 0);
//Set DAC0 to 2.5 volts.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_DAC, 0, 2.5, 0, 0);
//Read digital input FIO1.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_DIGITAL_BIT, 1, 0, 0, 0);
//Read digital inputs FIO2 through FIO3.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_DIGITAL_PORT, 2, 0, 2, 0);
// LJUD.AddRequest (u6.ljhandle, LJUD.IO.GET_DIGITAL_PORT, 2, 0, 3, 0); would request through FIO4
//Request the value of Counter0.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_COUNTER, 0, 0, 0, 0);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
try
{
//Execute the requests.
LJUD.GoOne(u6.ljhandle);
//Get all the results. The input measurement results are stored. All other
//results are for configuration or output requests so we are just checking
//whether there was an error.
LJUD.GetFirstResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException exc)
{
ShowErrorMessage(exc);
return;
}
bool isFinished = false;
while (!isFinished)
{
switch (ioType)
{
case LJUD.IO.GET_AIN:
switch ((int)channel)
{
case 2:
Value2 = dblValue;
break;
case 3:
Value3 = dblValue;
break;
}
break;
case LJUD.IO.GET_DIGITAL_BIT:
ValueDIBit = dblValue;
break;
case LJUD.IO.GET_DIGITAL_PORT:
ValueDIPort = dblValue;
break;
case LJUD.IO.GET_COUNTER:
ValueCounter = dblValue;
break;
}
try { LJUD.GetNextResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException exc)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (exc.LJUDError == U6.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
isFinished = true;
}
else
{
ShowErrorMessage(exc);
}
}
}
// Display results
ain2Display.Text = String.Format("{0:0.###}", Value2);
ain3Display.Text = String.Format("{0:0.###}", Value3);
fio1Display.Text = String.Format("{0:0.###}", ValueDIBit);
fio2Display.Text = String.Format("{0:0.###}", ValueDIPort); //Will read 30 (binary 11) if both lines are pulled-high as normal.
counter0Display.Text = String.Format("{0:0.###}", ValueCounter);
}
public void performActions()
{
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
// Variables to satisfy certain method signatures
int dummyInt = 0;
double dummyDouble = 0;
double[] dummyDoubleArray = { 0 };
//Open the Labjack with id 2
try
{
u6 = new U6(LJUD.CONNECTION.USB, "1", true); // Connection through USB
//First requests to configure the timer and counter. These will be
//done with and add/go/get block.
//Set the timer/counter pin offset to 0, which will put the first
//timer/counter on FIO0.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_COUNTER_PIN_OFFSET, 0, 0, 0);
//Use the 48 MHz timer clock base with divider. Since we are using clock with divisor
//support, Counter0 is not available.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_CLOCK_BASE, (double)LJUD.TIMERCLOCKS.MHZ48_DIV, 0, 0);
//Set the divisor to 48 so the actual timer clock is 1 MHz.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_CLOCK_DIVISOR, 48, 0, 0);
//Enable 1 timer. It will use FIO0.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.NUMBER_TIMERS_ENABLED, 1, 0, 0);
//Make sure Counter0 is disabled.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 0, 0, 0, 0);
//Enable Counter1. It will use FIO1 since 1 timer is enabled.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, 1, 1, 0, 0);
//Configure Timer0 as 8-bit PWM. Frequency will be 1M/256 = 3906 Hz.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_TIMER_MODE, 0, (double)LJUD.TIMERMODE.PWM8, 0, 0);
//Set the PWM duty cycle to 50%.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_TIMER_VALUE, 0, 32768, 0, 0);
//Execute the requests.
LJUD.GoOne(u6.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Get all the results just to check for errors.
try { LJUD.GetFirstResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e) { showErrorMessage(e); }
bool finished = false;
while (!finished)
{
try{ LJUD.GetNextResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
if (e.LJUDError == LJUD.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
finished = true;
}
else
{
showErrorMessage(e);
}
}
}
try
{
//Wait 1 second.
Thread.Sleep(1000);
//Request a read from the counter.
LJUD.eGet(u6.ljhandle, LJUD.IO.GET_COUNTER, (LJUD.CHANNEL) 1, ref dblValue, dummyDoubleArray);
//This should read roughly 4k counts if FIO0 is shorted to FIO1.
Console.Out.WriteLine("Counter = {0:0.0}\n", dblValue);
//Wait 1 second.
Thread.Sleep(1000);
//Request a read from the counter.
LJUD.eGet(u6.ljhandle, LJUD.IO.GET_COUNTER, (LJUD.CHANNEL) 1, ref dblValue, dummyDoubleArray);
//This should read about 3906 counts more than the previous read.
Console.Out.WriteLine("Counter = {0:0.0}\n", dblValue);
//Reset all pin assignments to factory default condition.
LJUD.ePut(u6.ljhandle, LJUD.IO.PIN_CONFIGURATION_RESET, 0, 0, 0);
//The PWM output sets FIO0 to output, so we do a read here to set
//it to input.
LJUD.eGet(u6.ljhandle, LJUD.IO.GET_DIGITAL_BIT, 0, ref dblValue, 0);
}
catch (LabJackUDException e)
{
if (e.LJUDError == LJUD.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
finished = true;
}
else
{
showErrorMessage(e);
}
}
Console.ReadLine(); // Pause for user
}
public void performActions()
{
double dblDriverVersion;
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0;
double Value0 = 9999, Value1 = 9999, Value2 = 9999;
double ValueDIBit = 9999, ValueDIPort = 9999, ValueCounter = 9999;
//Read and display the UD version.
dblDriverVersion = LJUD.GetDriverVersion();
Console.Out.WriteLine("UD Driver Version = {0:0.000}\n\n", dblDriverVersion);
//Open the first found LabJack U6.
try
{
u6 = new U6(LJUD.CONNECTION.USB, "0", true); // Connection through USB
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//First some configuration commands. These will be done with the ePut
//function which combines the add/go/get into a single call.
//Set the timer/counter pin offset to 3, which will put the first
//timer/counter on FIO3.
LJUD.ePut(u6.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.TIMER_COUNTER_PIN_OFFSET, 3, 0);
//Enable Counter1 (FIO3).
LJUD.ePut(u6.ljhandle, LJUD.IO.PUT_COUNTER_ENABLE, (LJUD.CHANNEL) 1, 1, 0);
//The following commands will use the add-go-get method to group
//multiple requests into a single low-level function.
//Request a single-ended reading from AIN0.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN, 0, 0, 0, 0);
//Request a single-ended reading from AIN1.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN, 1, 0, 0, 0);
//Request a reading from AIN2 using the Special range.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_AIN_DIFF, 2, 0, 15, 0);
//Set DAC0 to 3.5 volts.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_DAC, 0, 3.5, 0, 0);
//Set digital output FIO0 to output-high.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.PUT_DIGITAL_BIT, 0, 1, 0, 0);
//Read digital input FIO1.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_DIGITAL_BIT, 1, 0, 0, 0);
//Read digital inputs FIO1 through FIO2.
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_DIGITAL_PORT, 1, 0, 2, 0);
//Request the value of Counter1 (FIO3).
LJUD.AddRequest(u6.ljhandle, LJUD.IO.GET_COUNTER, 1, 0, 0, 0);
bool requestedExit = false;
while (!requestedExit)
{
try
{
//Execute the requests.
LJUD.GoOne(u6.ljhandle);
//Get all the results. The input measurement results are stored. All other
//results are for configuration or output requests so we are just checking
//whether there was an error.
LJUD.GetFirstResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
bool finished = false;
while (!finished)
{
switch (ioType)
{
case LJUD.IO.GET_AIN:
switch ((int)channel)
{
case 0:
Value0 = dblValue;
break;
case 1:
Value1 = dblValue;
break;
}
break;
case LJUD.IO.GET_AIN_DIFF:
Value2 = dblValue;
break;
case LJUD.IO.GET_DIGITAL_BIT:
ValueDIBit = dblValue;
break;
case LJUD.IO.GET_DIGITAL_PORT:
ValueDIPort = dblValue;
break;
case LJUD.IO.GET_COUNTER:
ValueCounter = dblValue;
break;
}
try { LJUD.GetNextResult(u6.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == U6.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
finished = true;
}
else
{
showErrorMessage(e);
}
}
}
Console.Out.WriteLine("AIN0 = {0:0.###}\n", Value0);
Console.Out.WriteLine("AIN1 = {0:0.###}\n", Value1);
Console.Out.WriteLine("AIN2 = {0:0.###}\n", Value2);
Console.Out.WriteLine("FIO1 = {0:0.###}\n", ValueDIBit);
Console.Out.WriteLine("FIO1-FIO2 = {0:0.###}\n", ValueDIPort); //Will read 3 (binary 11) if both lines are pulled-high as normal.
Console.Out.WriteLine("Counter1 (FIO3) = {0:0.###}\n", ValueCounter);
Console.Out.WriteLine("\nPress Enter to go again or (q) to quit\n");
str1 = Console.ReadLine(); // Pause for user
requestedExit = str1 == "q";
}
}
public void performActions()
{
long i = 0, k = 0;
LJUD.IO ioType = 0;
LJUD.CHANNEL channel = 0;
double dblValue = 0, dblCommBacklog = 0, dblUDBacklog = 0;
double scanRate = 2000;
int delayms = 1000;
double numScans = 4000; //2x the expected # of scans (2*scanRate*delayms/1000)
double numScansRequested;
double[] adblData = new double[8000]; //Max buffer size (#channels*numScansRequested)
// Variables to satisfy certain method signatures
int dummyInt = 0;
double dummyDouble = 0;
double[] dummyDoubleArray = { 0 };
//Read and display the UD version.
dblValue = LJUD.GetDriverVersion();
Console.Out.WriteLine("UD Driver Version = {0:0.000}\n\n", dblValue);
try
{
//Open the first found LabJack U3.
u3 = new U3(LJUD.CONNECTION.USB, "0", true); // Connection through USB
//Read and display the hardware version of this U3.
LJUD.eGet(u3.ljhandle, LJUD.IO.GET_CONFIG, LJUD.CHANNEL.HARDWARE_VERSION, ref dblValue, 0);
Console.Out.WriteLine("U3 Hardware Version = {0:0.000}\n\n", dblValue);
//Read and display the firmware version of this U3.
LJUD.eGet(u3.ljhandle, LJUD.IO.GET_CONFIG, LJUD.CHANNEL.FIRMWARE_VERSION, ref dblValue, 0);
Console.Out.WriteLine("U3 Firmware Version = {0:0.000}\n\n", dblValue);
//Start by using the pin_configuration_reset IOType so that all
//pin assignments are in the factory default condition.
LJUD.ePut(u3.ljhandle, LJUD.IO.PIN_CONFIGURATION_RESET, 0, 0, 0);
//Configure FIO0 and FIO1 as analog, all else as digital. That means we
//will start from channel 0 and update all 16 flexible bits. We will
//pass a value of b0000000000000011 or d3.
LJUD.ePut(u3.ljhandle, LJUD.IO.PUT_ANALOG_ENABLE_PORT, 0, 3, 16);
//Configure the stream:
//Set the scan rate.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_SCAN_FREQUENCY, scanRate, 0, 0);
//Give the driver a 5 second buffer (scanRate * 2 channels * 5 seconds).
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_BUFFER_SIZE, scanRate * 2 * 5, 0, 0);
//Configure reads to retrieve whatever data is available without waiting (wait mode LJUD.STREAMWAITMODES.NONE).
//See comments below to change this program to use LJUD.STREAMWAITMODES.SLEEP mode.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.PUT_CONFIG, LJUD.CHANNEL.STREAM_WAIT_MODE, (double)LJUD.STREAMWAITMODES.NONE, 0, 0);
//Define the scan list as AIN0 then AIN1.
LJUD.AddRequest(u3.ljhandle, LJUD.IO.CLEAR_STREAM_CHANNELS, 0, 0, 0, 0);
LJUD.AddRequest(u3.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL, 0, 0, 0, 0);
LJUD.AddRequest(u3.ljhandle, LJUD.IO.ADD_STREAM_CHANNEL_DIFF, 1, 0, 32, 0);
//Execute the list of requests.
LJUD.GoOne(u3.ljhandle);
}
catch (LabJackUDException e)
{
showErrorMessage(e);
}
//Get all the results just to check for errors.
try { LJUD.GetFirstResult(u3.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e) { showErrorMessage(e); }
bool finished = false;
while (!finished)
{
try { LJUD.GetNextResult(u3.ljhandle, ref ioType, ref channel, ref dblValue, ref dummyInt, ref dummyDouble); }
catch (LabJackUDException e)
{
// If we get an error, report it. If the error is NO_MORE_DATA_AVAILABLE we are done
if (e.LJUDError == UE9.LJUDERROR.NO_MORE_DATA_AVAILABLE)
{
finished = true;
}
else
{
showErrorMessage(e);
}
}
}
//Start the stream.
try
{
LJUD.eGet(u3.ljhandle, LJUD.IO.START_STREAM, 0, ref dblValue, 0);
}
catch (LabJackUDException e) { showErrorMessage(e); }
//The actual scan rate is dependent on how the desired scan rate divides into
//the LabJack clock. The actual scan rate is returned in the value parameter
//from the start stream command.
Console.Out.WriteLine("Actual Scan Rate = {0:0.000}\n", dblValue);
Console.Out.WriteLine("Actual Sample Rate = {0:0.000}\n", 2 * dblValue); // # channels * scan rate
//Read data
while (Win32Interop._kbhit() == 0) //Loop will run until any key is hit
{
//Since we are using wait mode LJUD.STREAMWAITMODES.NONE, we will wait a little, then
//read however much data is available. Thus this delay will control how
//fast the program loops and how much data is read each loop. An
//alternative common method is to use wait mode LJUD.STREAMWAITMODES.SLEEP where the
//stream read waits for a certain number of scans. In such a case
//you would not have a delay here, since the stream read will actually
//control how fast the program loops.
//
//To change this program to use sleep mode,
// -change numScans to the actual number of scans desired per read,
// -change wait mode addrequest value to LJUD.STREAMWAITMODES.SLEEP,
// -comment out the following Thread.Sleep command.
Thread.Sleep(delayms); //Remove if using LJUD.STREAMWAITMODES.SLEEP.
//init array so we can easily tell if it has changed
for (k = 0; k < numScans * 2; k++)
{
adblData[k] = 9999.0;
}
try
{
//Read the data. We will request twice the number we expect, to
//make sure we get everything that is available.
//Note that the array we pass must be sized to hold enough SAMPLES, and
//the Value we pass specifies the number of SCANS to read.
numScansRequested = numScans;
LJUD.eGet(u3.ljhandle, LJUD.IO.GET_STREAM_DATA, LJUD.CHANNEL.ALL_CHANNELS, ref numScansRequested, adblData);
//The displays the number of scans that were actually read.
Console.Out.WriteLine("\nIteration # {0:0.#}\n", i);
Console.Out.WriteLine("Number read = {0:0}\n", numScansRequested);
//This displays just the first scan.
Console.Out.WriteLine("First scan = {0:0.000}, {1:0.000}\n", adblData[0], adblData[1]);
//Retrieve the current backlog. The UD driver retrieves stream data from
//the U3 in the background, but if the computer is too slow for some reason
//the driver might not be able to read the data as fast as the U3 is
//acquiring it, and thus there will be data left over in the U3 buffer.
LJUD.eGet(u3.ljhandle, LJUD.IO.GET_CONFIG, LJUD.CHANNEL.STREAM_BACKLOG_COMM, ref dblCommBacklog, 0);
Console.Out.WriteLine("Comm Backlog = {0:0}\n", dblCommBacklog);
LJUD.eGet(u3.ljhandle, LJUD.IO.GET_CONFIG, LJUD.CHANNEL.STREAM_BACKLOG_UD, ref dblUDBacklog, 0);
Console.Out.WriteLine("UD Backlog = {0:0}\n", dblUDBacklog);
i++;
}
catch (LabJackUDException e) { showErrorMessage(e); }
}
//Stop the stream
try{ LJUD.eGet(u3.ljhandle, LJUD.IO.STOP_STREAM, 0, ref dummyDouble, dummyDoubleArray); }
catch (LabJackUDException e) { showErrorMessage(e); }
Console.Out.WriteLine("\nDone");
Console.ReadLine(); // Pause for user
}
