https://github.com/c3n9/serialport-in-maui

Demonstration of how MAUI Android works with SerialPort
https://github.com/c3n9/serialport-in-maui

andorid android-serial-port arduino c-sharp maui serialports

Last synced: 2 months ago
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Demonstration of how MAUI Android works with SerialPort

• Host: GitHub
• URL: https://github.com/c3n9/serialport-in-maui
• Owner: c3n9
• License: mit
• Created: 2024-07-22T04:54:59.000Z (5 months ago)
• Default Branch: master
• Last Pushed: 2024-08-24T20:27:03.000Z (4 months ago)
• Last Synced: 2024-09-29T12:22:39.436Z (3 months ago)
• Topics: andorid, android-serial-port, arduino, c-sharp, maui, serialports
• Language: LLVM
• Homepage:
• Size: 182 MB
• Stars: 2
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
#  Serial Port in MAUI (Android)

## Getting start

1. Reference the [library](https://github.com/anotherlab/UsbSerialForAndroid?tab=readme-ov-file) to your project. We will use the source code, since there is no such library on nuget.

   

2. Copy the [device_filter.xml](https://github.com/anotherlab/UsbSerialForAndroid/blob/main/UsbSerialExampleApp/Resources/xml/device_filter.xml) from the example app to your Platforms/Android/Resources folder. Make sure that the Build Action is set to AndroidResource.

3. Add the following attribute to the main activity to enable the USB Host.

```

[assembly: UsesFeature("android.hardware.usb.host")]

```

4. Add the following IntentFilter to the main activity to receive USB device attached notifications.

```

[IntentFilter(new[] { UsbManager.ActionUsbDeviceAttached })]

```

5. Add the MetaData attribute to associate the device_filter with the USB attached event to only see the devices that we are looking for.

```

[MetaData(UsbManager.ActionUsbDeviceAttached, Resource = "@xml/device_filter")]

```

6. Add a global [interface](https://github.com/c3n9/SerialPortTestInAndroid/blob/master/SerialPortTest/IUsbService.cs) to implement an action with our controller.

```

public interface IUsbService

{

  Task> GetAvailablePortsAsync();

  Task ConnectAsync(string portName);

  Task SendMessageAsync(string message);

}

```

7. Add the [UsbServiceAndroid](https://github.com/c3n9/SerialPort-in-MAUI/blob/master/SerialPortTest/Platforms/Android/UsbServiceAndroid.cs) class to the Android folder, which will implement the created interface.

   

8. With the help of [DependencyService](https://github.com/c3n9/SerialPortTestInAndroid/blob/master/SerialPortTest/MainPage.xaml.cs), we will turn to platform-dependent code and you can work safely with our controller.

## Arduino firmware Code

```

const int ledPin =  LED_BUILTIN;// the number of the LED pin

void setup() {

  pinMode(ledPin, OUTPUT); // Set the pin mode to output

  Serial.begin(9600); // Initialize serial communication at 9600 bits per second

}

void loop() {

  if (Serial.available()) { // Check if data is available to read

    commandValue = Serial.read(); // Read the incoming data

    if (commandValue == '1') { // If the received data is '1'

      Serial.println("1"); // Send '1' to serial monitor

      digitalWrite(ledPin, HIGH); // Turn on the LED

    }

    else if (commandValue == '0') { // If the received data is '0'

      Serial.println("2"); // Send '2' to serial monitor

      digitalWrite(ledPin, LOW); // Turn off the LED

    }

  }

  delay(10); // Wait for 10 milliseconds before the next loop iteration

}

```

## Working with bluetooth / Not tested set and get value

### Everything has been tested using an Arduino MEGA 2560, ESP32 and a Google Pixel 7a smartphone.