Add project files.

HTOLHAST/Keithley6485.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace HTOLHAST
+{
+    public class Keithley6485 : SCPIInstrument
+    {
+        public Keithley6485(string resourceString) : base(resourceString) { }
+        public void PerformZeroCheck()
+        {
+            try
+            {
+                // Step 1. Reset
+                // Step 2. Enable zero check
+                // step 3. Perform zero correction
+                // step 4. Select AUTO range
+
+                // step 5. Connect current to be measured
+                // step 6. Disable zero check
+
+                WriteCommand("*RST"); // Reset Instrument
+                WriteCommand("SYST:ZCH ON"); // Enable zero check
+                WriteCommand("RANG 2E-9"); // Set lowest range 
+                WriteCommand("INIT"); // Trigger reading to be used as zero correction
+
+                WriteCommand("SYST:ZCOR:ACQ");  // Use last reading taken as zero correct value.
+                WriteCommand("SYST:ZCOR ON"); // Perform zero correction       
+                WriteCommand("RANG:AUTO ON"); // Enable AUTO range
+                WriteCommand("SYST:ZCH OFF"); // Disable zero check
+
+                Console.WriteLine("ZeroCheck Performed");
+            }
+            catch (Exception e)
+            {
+                throw new InvalidOperationException("ZeroCheck operation failed.", e);
+            }
+            
+        }
+        private void InitiateRead()
+        {
+            WriteCommand("SYST:ZCH OFF"); // Enable zero check
+            WriteCommand("INIT"); // Trigger reading to be used as zero correction
+            WriteCommand("RANG:AUTO ON"); // Enable AUTO range
+            WriteCommand("READ?"); // trigger and return one reading
+            Console.WriteLine("Read Command Initiated");
+        }
+        public string MeasureDCCurrent()
+        {
+            InitiateRead();
+            string response = ReadResponse();
+            CreateSample(response);
+            return response;
+        }
+        public override Sample CreateSample(string response)
+        {
+            string Response = response;
+
+            // Parse the Keithley output
+            string[] parts = Response.Split(',');
+
+            if (parts.Length >= 1 && double.TryParse(parts[0].Replace("A", ""), out double current))
+            {
+                Keithley6485Sample sample = new Keithley6485Sample(DateTime.Now, current, "A");
+
+                // Optionally, store or process the sample here
+                Console.WriteLine($"[Keithley] Sample Created, Value: {sample.Value} {sample.Unit}");
+                return sample;
+            }
+
+            throw new InvalidOperationException("Unsupported instrument type.");
+        }
+        
+        // Add more specific methods for Keithley 6485 as needed
+    }
+}