Read and write values of the characteristics are now gotten.

App/RobobinApp/ViewModels/ConnectionPageViewModel.cs

@@ -15,6 +15,9 @@ using System.Collections.Generic;
 
 using Windows.Networking.Connectivity;
 using Windows.Devices.WiFi;
+using System.Reflection.PortableExecutable;
+using Plugin.BLE.Windows;
+using System.Text;
 
 namespace RobobinApp.ViewModels
 {
@@ -33,6 +36,9 @@ namespace RobobinApp.ViewModels
         private string ssid;
         private string password;
         public bool IsBluetoothDeviceSelectionVisible => !IsWifiNetworkSelectionVisible;
+        public const string SendReceiveServiceUUID = "00000001-710e-4a5b-8d75-3e5b444bc3cf";
+        public const string rxUUID = "00000002-710e-4a5b-8d75-3e5b444bc3cf";
+        public const string wxUUID = "00000003-710e-4a5b-8d75-3e5b444bc3cf";
 
         public bool IsConnected
         {
@@ -98,7 +104,7 @@ namespace RobobinApp.ViewModels
 
             Debug.WriteLine("Checking and requesting Bluetooth permissions.");
             CheckAndRequestBluetoothPermissions();
-            ScanForWifiNetworks();
+            //ScanForWifiNetworks();
         }
         private async void ScanForWifiNetworks()
         {
@@ -130,7 +136,7 @@ namespace RobobinApp.ViewModels
                         SignalStrength = network.NetworkRssiInDecibelMilliwatts
                     };
 
-                    Device.BeginInvokeOnMainThread(() => WifiNetworks.Add(wifiNetwork));
+                    Microsoft.Maui.Controls.Device.BeginInvokeOnMainThread(() => WifiNetworks.Add(wifiNetwork));
                     Debug.WriteLine($"Found Wi-Fi network: {wifiNetwork.SSID}, Signal Strength: {wifiNetwork.SignalStrength} dBm");
                 }
             }
@@ -172,7 +178,7 @@ namespace RobobinApp.ViewModels
                 }
 
                 var characteristics = await uartService.GetCharacteristicsAsync();
-                var rxCharacteristic = characteristics.FirstOrDefault(c => c.Id == Guid.Parse("6e400002-b5a3-f393-e0a9-e50e24dcca9e"));
+                var rxCharacteristic = characteristics.FirstOrDefault(c => c.Id == Guid.Parse(rxUUID));
 
                 if (rxCharacteristic == null)
                 {
@@ -296,7 +302,7 @@ namespace RobobinApp.ViewModels
 
             if (!BluetoothDevices.Any(d => d.MacAddress == bluetoothDevice.MacAddress))
             {
-                Device.BeginInvokeOnMainThread(() => BluetoothDevices.Add(bluetoothDevice));
+                Microsoft.Maui.Controls.Device.BeginInvokeOnMainThread(() => BluetoothDevices.Add(bluetoothDevice));
             }
         }
 
@@ -353,29 +359,47 @@ namespace RobobinApp.ViewModels
                 {
                     Debug.WriteLine($"Service: ID={service.Id}, Name={service.Name}");
 
-                    // Check if this is the Generic Access service
-                    if (service.Id == Guid.Parse("00001800-0000-1000-8000-00805f9b34fb"))
-                    {
-                        Debug.WriteLine("Found Generic Access service!");
 
-                        // Get the characteristic for the device name
-                        var deviceNameCharacteristic = service.GetCharacteristicAsync(Guid.Parse("00002a00-0000-1000-8000-00805f9b34fb"));
+                }
+     
 
-                        if (deviceNameCharacteristic != null)
+                var transmitService = services.FirstOrDefault(s => s.Id == Guid.Parse(SendReceiveServiceUUID));
+                Debug.WriteLine("Transmit service was accessed");
+                Debug.WriteLine($"{transmitService.Name} : {transmitService.Id}");
+                if (transmitService == null)
                 {
-                            // Read the device name characteristic
-                            
-                            Debug.WriteLine($"Device Name: {deviceNameCharacteristic}");
-                            await Application.Current.MainPage.DisplayAlert("Device Name", $"Device Name: Paul", "OK");
+                    Debug.WriteLine("Transmit service wasn't found");
                 }
-                        else
+                var characteristics = await transmitService.GetCharacteristicsAsync();
+                foreach (var characteristic in characteristics)
+                {
+                    Debug.WriteLine($"{characteristic.Uuid} | {characteristic.Name}");
+                    if (characteristic.Uuid.Equals(rxUUID))
                     {
-                            Debug.WriteLine("Device name characteristic not found.");
+                        Debug.WriteLine("Found Read");
+
+                        // Read the value from the characteristic
+                        var temperatureData = await characteristic.ReadAsync();
+
+                        // Convert the byte array to a string
+                        var temperatureValue = System.Text.Encoding.UTF8.GetString(temperatureData.data);
+
+                        Debug.WriteLine($"Temperature Value: {temperatureValue}");
                     }
+                    else if (characteristic.Uuid.Equals(wxUUID))
+                    {
+                        Debug.WriteLine("Found Write");
+
+                        // Read the current value (if needed)
+                        var writeValueData = await characteristic.ReadAsync();
+                        var writeValue = System.Text.Encoding.UTF8.GetString(writeValueData.data);
+
+                        Debug.WriteLine($"Current Write Value: {writeValue}");
+
                     }
                 }
 
-                // Optional: Handle other services or characteristics if needed
+
                 }
             catch (DeviceConnectionException ex)
             {