Added reverseEngineering sample code for HM310T

Tests/modbus2mqttTests/modbus2mqttTests.swift

@@ -1,13 +1,47 @@
 import XCTest
+import SwiftLibModbus
+
 @testable import modbus2mqtt
 
 final class modbus2mqttTests: XCTestCase {
-    func testExample() throws {
-        // This is an example of a functional test case.
-        // Use XCTAssert and related functions to verify your tests produce the correct
-        // results.
-        XCTFail()
+    func testReverseEngineerHM310T() async throws {
+        // Prints out modbus address ranges and compares them to the last time
+
+
+        let modbusDevice = try ModbusDevice(device: "/dev/tty.usbserial-42340",baudRate:9600)
+        let stripesize = 0x10
+
+        var store = [Int:[UInt16]]()
+        let emptyline = [UInt16](repeating:0, count:stripesize)
+
+        func readData(from address:Int) async throws
+        {
+            let data:[UInt16] = try await modbusDevice.readRegisters(from: address, count: stripesize, type: .holding)
+
+            let previous:[UInt16] = store[address] ?? emptyline
+
+            if data != previous
+            {
+                print("\( String(format:"%04x", address) ): \( data.map{ $0 == 0 ? "  -   " : String(format:"%04x  ",$0) }.joined(separator:" ") ) ")
+                print("\( String(format:"%04x", address) ): \( data.map{ $0 == 0 ? "      " : String(format:"%05d ",$0)  }.joined(separator:" ") ) ")
+                print("")
+                store[address] = data
+            }
+        }
+
+        for address in stride(from: 0x000, to: 0xFFFF, by: stripesize)
+        {
+            try await readData(from: address)
+        }
+
+        for _ in 0...20
+        {
+            print("WRAPAROUND")
 
-
+            for address in store.keys
+            {
+                try await readData(from: address)
+            }
+        }
     }
 }