From 66a86d3e14182b2081c57476675416652fbb040a Mon Sep 17 00:00:00 2001
From: Paul-Winpenny <92634321+Paul-Winpenny@users.noreply.github.com>
Date: Wed, 23 Oct 2024 17:44:02 +0100
Subject: [PATCH] At this point the sending and receiving messages is working
---
App/RobobinApp/Interfaces/BLEInterfaces.cs | 20 ++
.../ViewModels/ConnectionPageViewModel.cs | 245 +++++++-----------
App/RobobinApp/Views/ConnectionPage.xaml | 17 ++
3 files changed, 137 insertions(+), 145 deletions(-)
create mode 100644 App/RobobinApp/Interfaces/BLEInterfaces.cs
diff --git a/App/RobobinApp/Interfaces/BLEInterfaces.cs b/App/RobobinApp/Interfaces/BLEInterfaces.cs
new file mode 100644
index 00000000..181124d9
--- /dev/null
+++ b/App/RobobinApp/Interfaces/BLEInterfaces.cs
@@ -0,0 +1,20 @@
+using Plugin.BLE.Abstractions.Contracts;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Robobin.Interfaces
+{
+ public interface IBluetoothLEService
+ {
+ IBluetoothLE Current { get; }
+ }
+
+ public interface IAdapterService
+ {
+ IAdapter Adapter { get; }
+ }
+
+}
diff --git a/App/RobobinApp/ViewModels/ConnectionPageViewModel.cs b/App/RobobinApp/ViewModels/ConnectionPageViewModel.cs
index 3cd816e9..14acad7d 100644
--- a/App/RobobinApp/ViewModels/ConnectionPageViewModel.cs
+++ b/App/RobobinApp/ViewModels/ConnectionPageViewModel.cs
@@ -18,6 +18,7 @@ using Windows.Devices.WiFi;
using System.Reflection.PortableExecutable;
using Plugin.BLE.Windows;
using System.Text;
+using System.Windows.Documents;
namespace RobobinApp.ViewModels
{
@@ -32,6 +33,9 @@ namespace RobobinApp.ViewModels
public ICommand ConnectCommand { get; }
public ICommand SendWifiInfoCommand { get; }
public ICommand DisconnectCommand { get; }
+ public ICommand TestReadOperation { get; }
+ public ICommand TestWriteOperation { get; }
+
private bool _isConnected;
private string ssid;
private string password;
@@ -39,6 +43,7 @@ namespace RobobinApp.ViewModels
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 string tempUnit = "C";
public bool IsConnected
{
@@ -50,17 +55,31 @@ namespace RobobinApp.ViewModels
OnPropertyChanged(nameof(ConnectButtonText)); // Update button text when connection state changes
}
}
+ private ICharacteristic _readCharacteristic;
+ private ICharacteristic _writeCharacteristic;
+
+ public ICharacteristic ReadCharacteristic
+ {
+ get => _readCharacteristic;
+ set
+ {
+ _readCharacteristic = value;
+ OnPropertyChanged();
+ }
+ }
- public string SSID
+ public ICharacteristic WriteCharacteristic
{
- get => ssid;
+ get => _writeCharacteristic;
set
{
- ssid = value;
- OnPropertyChanged(nameof(SSID));
+ _writeCharacteristic = value;
+ OnPropertyChanged();
}
}
+
+
public string Password
{
get => password;
@@ -76,7 +95,7 @@ namespace RobobinApp.ViewModels
public string ConnectButtonText => IsConnected ? "Disconnect" : "Connect";
private bool _isWifiNetworkSelectionVisible;
private WifiNetwork _selectedWifiNetwork;
-
+
public bool IsWifiNetworkSelectionVisible
{
get => _isWifiNetworkSelectionVisible;
@@ -94,9 +113,12 @@ namespace RobobinApp.ViewModels
WifiNetworks = new ObservableCollection<WifiNetwork>();
ConnectCommand = new Command(OnConnect);
DisconnectCommand = new Command(OnDisconnect);
- SendWifiInfoCommand = new Command(OnSendWifiInfo);
GoHomeCommand = new Command(async () => await OnGoHome());
ConnectCommand = new Command(OnToggleConnection);
+ TestReadOperation = new Command(async () => await ReadOperationAsync());
+ SendWifiInfoCommand = new Command(OnSendWifiInfo);
+
+ TestWriteOperation = new Command(async() => await PingPiASync());
_bluetoothLE = CrossBluetoothLE.Current;
_adapter = _bluetoothLE.Adapter;
_adapter.DeviceDiscovered += OnDeviceDiscovered;
@@ -104,36 +126,53 @@ namespace RobobinApp.ViewModels
Debug.WriteLine("Checking and requesting Bluetooth permissions.");
CheckAndRequestBluetoothPermissions();
- //ScanForWifiNetworks();
}
- private async void ScanForWifiNetworks()
+
+ private void OnSendWifiInfo(object obj)
{
- WifiNetworks.Clear();
- Debug.WriteLine("Scanning for Wi-Fi networks...");
+ var SSID = SelectedWifiNetwork.SSID;
+ var result = WriteOperationAsync("CONNECT", SSID + "," + password);
+ Debug.WriteLine($"Result: {result}");
+ }
- var wifiAdapter = await GetWifiAdapterAsync();
- if (wifiAdapter == null)
+ private async Task PingPiASync()
+ {
+ if (tempUnit.Equals("C"))
{
- Debug.WriteLine("Wi-Fi adapter not found.");
- return;
+ tempUnit = "F";
+ } else
+ {
+ tempUnit = "C";
}
+ WriteOperationAsync(tempUnit);
+
+ }
- await wifiAdapter.ScanAsync();
- Debug.Write("Scanning for networks");
- var networks = wifiAdapter.NetworkReport.AvailableNetworks;
+ private async void ScanForWifiNetworks()
+ {
+ WifiNetworks.Clear();
+ Debug.WriteLine("Retrieving Wifi networks from readCharacteristic");
- var addedSsids = new HashSet<string>(); // To keep track of added SSIDs
+ //Delay 5 seconds
+ await Task.Delay(5000);
- foreach (var network in networks)
+ //var networks = await ReadOperationAsync();
+ var networks = "Network1\nNetwork2\nNetwork3"; // For testing
+ Debug.WriteLine(networks);
+ var delimiter = "\n";
+ var networkList = networks.Split(delimiter);
+ var addedSsids = new HashSet<string>();
+
+ foreach (var network in networkList)
{
- Debug.Write("This network exists: " + network.Ssid);
+ Debug.Write("This network exists: " + network);
- if (addedSsids.Add(network.Ssid))
+ if (addedSsids.Add(network))
{
var wifiNetwork = new WifiNetwork
{
- SSID = network.Ssid,
- SignalStrength = network.NetworkRssiInDecibelMilliwatts
+ SSID = network,
+ SignalStrength = 0.0
};
Microsoft.Maui.Controls.Device.BeginInvokeOnMainThread(() => WifiNetworks.Add(wifiNetwork));
@@ -143,67 +182,6 @@ namespace RobobinApp.ViewModels
}
- private async Task<WiFiAdapter> GetWifiAdapterAsync()
- {
- var result = await WiFiAdapter.FindAllAdaptersAsync();
- return result.FirstOrDefault(); // Get the first available Wi-Fi adapter
- }
-
- private async void OnSendWifiInfo(object obj)
- {
- if (SelectedWifiNetwork != null)
- {
- Debug.WriteLine("Wifi been selected");
- Debug.WriteLine($"Selected Network {SelectedWifiNetwork.SSID}");
- }
- if (!_isConnected || _connectedDevice == null)
- {
- Debug.WriteLine("Cannot send WiFi information: No device is connected.");
- await Application.Current.MainPage.DisplayAlert("Error", "No device is connected.", "OK");
- return;
- }
-
- try
- {
- Debug.WriteLine($"Sending WiFi information to {_connectedDevice.Name}...");
-
-
- var services = await _connectedDevice.GetServicesAsync();
- var uartService = services.FirstOrDefault(s => s.Id == Guid.Parse("6e400001-b5a3-f393-e0a9-e50e24dcca9e"));
-
- if (uartService == null)
- {
- Debug.WriteLine("UART service not found.");
- await Application.Current.MainPage.DisplayAlert("Error", "UART service not found on the device.", "OK");
- return;
- }
-
- var characteristics = await uartService.GetCharacteristicsAsync();
- var rxCharacteristic = characteristics.FirstOrDefault(c => c.Id == Guid.Parse(rxUUID));
-
- if (rxCharacteristic == null)
- {
- Debug.WriteLine("RX characteristic not found.");
- await Application.Current.MainPage.DisplayAlert("Error", "RX characteristic not found on the device.", "OK");
- return;
- }
-
- string wifiInfo = $"{SSID},{Password}";
- byte[] data = System.Text.Encoding.UTF8.GetBytes(wifiInfo);
-
- await rxCharacteristic.WriteAsync(data);
-
- Debug.WriteLine("WiFi information sent successfully.");
- await Application.Current.MainPage.DisplayAlert("Success", "WiFi information sent successfully.", "OK");
- }
- catch (Exception ex)
- {
- Debug.WriteLine($"Error sending WiFi information: {ex.Message}");
- await Application.Current.MainPage.DisplayAlert("Error", $"Failed to send WiFi information: {ex.Message}", "OK");
- }
- }
-
-
public BluetoothDevice SelectedDevice
{
get => _selectedDevice;
@@ -351,29 +329,38 @@ namespace RobobinApp.ViewModels
if (_connectedDevice != null)
{
Debug.WriteLine($"Successfully connected to {SelectedDevice.Name}.");
+ //
var services = await _connectedDevice.GetServicesAsync();
+ Debug.WriteLine("Services gotten");
IsWifiNetworkSelectionVisible = true;
// Iterate through the discovered services
+ //var service = await _connectedDevice.GetServiceAsync(Guid.Parse("00000001-710e-4a5b-8d75-3e5b444bc3cf"));
foreach (var service in services)
+
{
Debug.WriteLine($"Service: ID={service.Id}, Name={service.Name}");
if (service.Id.Equals(Guid.Parse("00000001-710e-4a5b-8d75-3e5b444bc3cf")) )
{
+ Debug.WriteLine("Found RW service");
var characteristics = await service.GetCharacteristicsAsync();
foreach (var characteristic in characteristics)
{
- Debug.WriteLine($"{characteristic.Uuid} | {characteristic.Name}");
+ var descriptor = await characteristic.GetDescriptorsAsync();
+ Debug.WriteLine($"{characteristic.Uuid} | {characteristic.Name} | {descriptor}");
if (characteristic.Uuid.Equals(rxUUID))
{
- var result = await ReadOperationAsync(characteristic);
+ ReadCharacteristic = characteristic;
+ var result = await ReadOperationAsync();
}
else if (characteristic.Uuid.Equals(wxUUID))
{
- const string data = "C";
- await WriteOperationAsync(characteristic,data);
+ WriteCharacteristic = characteristic;
+ const string command = "SCAN";
+ await WriteOperationAsync(command);
+ ScanForWifiNetworks();
}
}
@@ -382,7 +369,7 @@ namespace RobobinApp.ViewModels
var transmissionService = services.FirstOrDefault(s => s.Id == Guid.Parse(SendReceiveServiceUUID));
var readCharacteristic = await transmissionService.GetCharacteristicAsync(Guid.Parse(rxUUID));
- var result2 = await ReadOperationAsync(readCharacteristic);
+ var result2 = await ReadOperationAsync();
}
else
@@ -415,14 +402,20 @@ namespace RobobinApp.ViewModels
- private async Task<string> ReadOperationAsync(ICharacteristic characteristic, int retryCount = 3)
+ private async Task<string> ReadOperationAsync(int retryCount = 3)
{
+ if (ReadCharacteristic == null)
+ {
+ Debug.WriteLine("Read characteristic is not set.");
+ return "Failure";
+ }
+ Debug.WriteLine($"READ COMMAND : {ReadCharacteristic.Uuid}");
for (int attempt = 1; attempt <= retryCount; attempt++)
{
try
{
- Debug.WriteLine($"Attempt {attempt}: Reading from characteristic {characteristic.Uuid}");
- var temperatureData = await characteristic.ReadAsync();
+ Debug.WriteLine($"Attempt {attempt}: Reading from characteristic {ReadCharacteristic.Uuid}");
+ var temperatureData = await ReadCharacteristic.ReadAsync();
var temperatureValue = System.Text.Encoding.UTF8.GetString(temperatureData.data);
Debug.WriteLine($"Temperature Value: {temperatureValue}");
return temperatureValue;
@@ -440,21 +433,27 @@ namespace RobobinApp.ViewModels
}
}
}
- return null;
+ return "Failure";
}
- private async Task WriteOperationAsync(ICharacteristic characteristic,string sendData, int retryCount = 3)
+ private async Task<string> WriteOperationAsync(string command, string arguments="", int retryCount = 3)
{
- byte[] data = System.Text.Encoding.UTF8.GetBytes(sendData);
+ if (WriteCharacteristic == null)
+ {
+ Debug.WriteLine("Write characteristic is not set.");
+ return "Failure";
+ }
+ string joinedData = command + ":" + arguments;
+ Debug.WriteLine($"WRITE COMMAND {joinedData}, UUID: {WriteCharacteristic}");
+ byte[] data = System.Text.Encoding.UTF8.GetBytes(joinedData);
for (int attempt = 1; attempt <= retryCount; attempt++)
{
try
- {
- Debug.WriteLine($"Attempt {attempt}: Writing to characteristic {characteristic.Uuid}");
- await characteristic.WriteAsync(data);
+ {
+ await WriteCharacteristic.WriteAsync(data);
Debug.WriteLine("Write operation succeeded.");
- return;
+ return "Success";
}
catch (Exception ex)
{
@@ -469,6 +468,8 @@ namespace RobobinApp.ViewModels
}
}
}
+ return "Failure";
+
}
@@ -505,50 +506,4 @@ namespace RobobinApp.ViewModels
}
-
- /**
- *
- var transmitService = services.FirstOrDefault(s => s.Id == Guid.Parse(SendReceiveServiceUUID));
- Debug.WriteLine("Transmit service was accessed");
- Debug.WriteLine($"{transmitService.Name} : {transmitService.Id}");
- if (transmitService == null)
- {
- Debug.WriteLine("Transmit service wasn't found");
- }
- var characteristics = await transmitService.GetCharacteristicsAsync();
-
- foreach (var characteristic in characteristics)
- {
- Debug.WriteLine($"{characteristic.Uuid} | {characteristic.Name}");
- if (characteristic.Uuid.Equals(rxUUID))
- {
- var result = await ReadOperationAsync(characteristic);
-
- }
- else if (characteristic.Uuid.Equals(wxUUID))
- {
- //await WriteOperationAsync(characteristic);
-
- }
- }
-
- }
- catch (DeviceConnectionException ex)
- {
- Debug.WriteLine($"Connection error: {ex.Message}");
- await Application.Current.MainPage.DisplayAlert("Connection Error", $"Failed to connect: {ex.Message}", "OK");
- }
- catch (TaskCanceledException ex)
- {
- Debug.WriteLine($"TaskCanceledException: {ex.Message}");
- await Application.Current.MainPage.DisplayAlert("Connection Error", "Connection timed out.", "OK");
- _connectedDevice = null;
- IsConnected = false;
- }
- catch (Exception ex)
- {
- Debug.WriteLine($"General connection error: {ex.Message}");
- await Application.Current.MainPage.DisplayAlert("Connection Error", $"An error occurred: {ex.Message}", "OK");
- }
- } **/
}
diff --git a/App/RobobinApp/Views/ConnectionPage.xaml b/App/RobobinApp/Views/ConnectionPage.xaml
index a7df6ffa..42521cba 100644
--- a/App/RobobinApp/Views/ConnectionPage.xaml
+++ b/App/RobobinApp/Views/ConnectionPage.xaml
@@ -121,5 +121,22 @@
VerticalOptions="End" />
</StackLayout>
</StackLayout>
+ <StackLayout Padding="10"
+ BackgroundColor="Black"
+ HorizontalOptions="FillAndExpand"
+ VerticalOptions="Start">
+ <Label Text="Admin Panel:"
+ FontSize="Medium"
+ HorizontalOptions="Start" />
+
+ <Button Text= "Test Read Operation"
+ Command="{Binding TestReadOperation}"
+ HorizontalOptions="Center"
+ VerticalOptions="End" />
+ <Button Text="Test Write Operation"
+ Command="{Binding TestWriteOperation}"
+ HorizontalOptions="Center"
+ VerticalOptions="End" />
+ </StackLayout>
</StackLayout>
</ContentPage>
--
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