static bool Find(string searchString, ref List <KeysightDevice> deviceList)
{
IEnumerable <string> devices;
try
{
devices = GlobalResourceManager.Find(searchString);
foreach (string device in devices)
{
//Console.WriteLine("\tAddress: {0}, Alias: {1}", device, GlobalResourceManager.Parse(device).AliasIfExists);
KeysightDevice d = new KeysightDevice
{
VisaAddress = device,
Alias = GlobalResourceManager.Parse(device).AliasIfExists
};
deviceList.Add(d);
}
return(true);
}
catch (VisaException ex)
{
return(false);
}
}
public static string[] FindGPIBAddresses()
{
IEnumerable <string> result = new List <string>();
try
{
result = GlobalResourceManager.Find($"GPIB?*INSTR");
}
catch (Exception ex)
{
if (!(ex is NativeVisaException))
{
if (ex.InnerException != null)
{
throw ex.InnerException;
}
else
{
throw ex;
}
}
}
return(result.ToArray().Where(n => !n.Contains("//")).ToArray());
}
static void Main(string[] args)
{
IEnumerable <string> devices;
try
{
// Finding all devices and interfaces is straightforward
Console.WriteLine("Find all devices and interfaces:");
devices = GlobalResourceManager.Find();
foreach (string device in devices)
{
Console.WriteLine("\tAddress: {0}, Alias: {1}", device, GlobalResourceManager.Parse(device).AliasIfExists);
}
}
catch (VisaException ex)
{
Console.WriteLine("Didn't find any devices!");
}
Console.WriteLine();
// You can specify other device types using different search strings. Here are some common examples:
// All instruments (no INTFC, BACKPLANE or MEMACC)
Find("?*INSTR");
// PXI modules
Find("PXI?*INSTR");
// USB devices
Find("USB?*INSTR");
// GPIB instruments
Find("GPIB?*");
// GPIB interfaces
Find("GPIB?*INTFC");
// GPIB instruments on the GPIB0 interface
Find("GPIB0?*INSTR");
// LAN instruments
Find("TCPIP?*");
// SOCKET (::SOCKET) instruments
Find("TCPIP?*SOCKET");
// VXI-11 (inst) instruments
Find("TCPIP?*inst?*INSTR");
// HiSLIP (hislip) instruments
Find("TCPIP?*hislip?*INSTR");
// RS-232 instruments
Find("ASRL?*INSTR");
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
/// <summary>
/// Search for a device matching a specific pattern.
/// </summary>
/// <remarks>
/// Several common patterns are included in this class.
/// You can use this method to narrow your search, then use Open()
/// with the same pattern to open an instrument.
/// </remarks>
/// <param name="pattern">string to match in resource names</param>
/// <returns>list of resource names that include pattern</returns>
public static IEnumerable <string> Find(string pattern = VisaPattern.USB)
{
IEnumerable <string> resourceNames;
try
{
resourceNames = GlobalResourceManager.Find(pattern).ToList();
}
catch (EntryPointNotFoundException ex)
{
throw new DevicePortException("The IVI.VISA dll appears to be missing."
+ Environment.NewLine + "It must be installed as a separate package."
+ Environment.NewLine + "Details:"
+ Environment.NewLine + ex.Message);
}
return(resourceNames);
}
/// <summary>
/// Returns a ConnectedDevicestruct that contains information about the VISA devices of device type DeviceType.* connected to the system.
/// Only devices that can be located by a VISA
/// library can be found by this function, e.g. something connected using raw sockets over LAN won't work.
/// NOT THREAD SAFE. This is best used before any regular I/O transfer has started in your program.
/// </summary>
/// <remarks>Look at ConnectedDeviceStruct documentation for additional info.</remarks>
/// <returns>a ConnectedDeviceStruct, containing information about connected Devices of the passed in device type</returns>
/// <exception cref="System.Runtime.InteropServices.ExternalException">Thrown if the program cannot locate a valid
/// VISA implementation on the system. There are no checked exceptions in C# but please,
/// handle this one with a message in ANY application you build with this library.</exception>
public static ConnectedDeviceStruct <T> GetConnectedDevices <T>() where T : VISADevice, ITestAndMeasurement
{
IEnumerable <string> resources;
IMessageBasedSession searcherMBS;
List <string> connectedDeviceModels = new List <string>(); // get a list of connected VISA device model names
List <string> rawVISAIDs = new List <string>(); // get a list of connect VISA devices' returned IDs
List <T> toReturn = new List <T>();
bool unknownDeviceFound = false;
try
{
resources = GlobalResourceManager.Find("?*"); // find all connected VISA devices
foreach (string s in resources) // after this loop, connectedDeviceModels contains a list of connected devices in the form <Model>
{
rawVISAIDs.Add(s); // we need to add
string IDNResponse;
searcherMBS = GlobalResourceManager.Open(s) as IMessageBasedSession; // open the message session
searcherMBS.FormattedIO.WriteLine("*IDN?"); // All SCPI compliant devices (and therefore all VISA devices) are required to respon to *IDN?
IDNResponse = searcherMBS.FormattedIO.ReadLine();
string[] tokens = IDNResponse.Split(','); // hopefully this isn't too slow
string formattedIDNString = tokens[1]; // we run the IDN command on all connected devices
// and then parse the response into the form <Model>
connectedDeviceModels.Add(formattedIDNString);
}
for (int i = 0; i < connectedDeviceModels.Count; i++) // connectedDeviceModels.Count() == rawVISAIDs.Count()
{
T temp = GetDeviceFromModelString <T>(connectedDeviceModels[i], rawVISAIDs[i]);
if (temp == null)
{
unknownDeviceFound = true; // if there's one
}
else
{
toReturn.Add(temp);
}
}
return(new ConnectedDeviceStruct <T>(toReturn.ToArray(), unknownDeviceFound));
}
catch (VisaException) // if no devices are found, return a struct with an array of size 0
{
return(new ConnectedDeviceStruct <T>(new T[0], false));
}
}
static void Find(string searchString)
{
IEnumerable <string> devices;
try
{
Console.WriteLine("Find with search string \"" + searchString + "\"");
devices = GlobalResourceManager.Find(searchString);
foreach (string device in devices)
{
Console.WriteLine("\tAddress: {0}, Alias: {1}", device, GlobalResourceManager.Parse(device).AliasIfExists);
}
}
catch (VisaException ex)
{
Console.WriteLine("... didn't find anything!");
}
Console.WriteLine();
}
private void button1_Click(object sender, EventArgs e)
{
label1.Show();
listBox1.Show();
IEnumerable <string> devices;
try
{
devices = GlobalResourceManager.Find();
var every2ndElement = devices.Where((p, index) => index % 2 == 0);
foreach (string device in every2ndElement)
{
listBox1.Items.Add(device);
}
this.listBox1.MouseClick += new MouseEventHandler(listBox1_MouseClick);
}
catch (VisaException ex)
{
MessageBox.Show("Инструментов не найдено");
}
}
public static bool FindDevices(INTERFACE_TYPE interfaceType, out List <KeysightDevice> deviceList, out string outMessage)
{
deviceList = new List <KeysightDevice>();
outMessage = string.Empty;
IEnumerable <string> devices;
try
{
// Finding all devices and interfaces is straightforward
devices = GlobalResourceManager.Find();
//foreach (string device in devices)
//{
// Console.WriteLine("\tAddress: {0}, Alias: {1}", device, GlobalResourceManager.Parse(device).AliasIfExists);
//}
}
catch (VisaException ex)
{
outMessage = "Didn't find any devices!" + ex.Message;
return(false);
}
bool b = false;
// All instruments (no INTFC, BACKPLANE or MEMACC)
//Find("?*INSTR");
if (interfaceType == INTERFACE_TYPE.PXI)
{
// PXI modules
b = Find("PXI?*INSTR", ref deviceList);
}
if (interfaceType == INTERFACE_TYPE.USB)
{
// USB devices
b = Find("USB?*INSTR", ref deviceList);
}
if (interfaceType == INTERFACE_TYPE.GPIB)
{
// GPIB instruments
b = Find("GPIB?*", ref deviceList);
// GPIB interfaces
b = Find("GPIB?*INTFC", ref deviceList);
// GPIB instruments on the GPIB0 interface
b = Find("GPIB0?*INSTR", ref deviceList);
}
if (interfaceType == INTERFACE_TYPE.TCPIP_LAN)
{
// LAN instruments
b = Find("TCPIP?*", ref deviceList);
}
if (interfaceType == INTERFACE_TYPE.TCPIP_SOCKET)
{
// SOCKET (::SOCKET) instruments
b = Find("TCPIP?*SOCKET", ref deviceList);
}
if (interfaceType == INTERFACE_TYPE.VXI_11)
{
// VXI-11 (inst) instruments
b = Find("TCPIP?*inst?*INSTR", ref deviceList);
}
if (interfaceType == INTERFACE_TYPE.HiSLIP)
{
// HiSLIP (hislip) instruments
b = Find("TCPIP?*hislip?*INSTR", ref deviceList);
}
if (interfaceType == INTERFACE_TYPE.ASRL)
{
// RS-232 instruments
b = Find("ASRL?*INSTR", ref deviceList);
}
return(b);
}
