android usb

usb.java

/**
implementation 'com.github.mik3y:usb-serial-for-android:3.4.6'
*/


UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
UsbSerialProber prober = UsbSerialProber.getDefaultProber();
List<UsbSerialDriver> availableDrivers = prober.findAllDrivers(usbManager);

if (availableDrivers.isEmpty()) {
    return;
}

UsbSerialDriver driver = availableDrivers.get(0);
UsbDeviceConnection connection = usbManager.openDevice(driver.getDevice());

if (connection == null) {
    // Perlu izin USB dari user
    return;
}

UsbSerialPort port = driver.getPorts().get(0); // Port pertama
port.open(connection);
port.setParameters(9600, 8, UsbSerialPort.STOPBITS_1, UsbSerialPort.PARITY_NONE);

// Kirim data
byte[] message = "Hello EDC".getBytes();
port.write(message, 1000);

// Terima data
byte[] buffer = new byte[16];
int numBytesRead = port.read(buffer, 1000);
Log.d("USB", "Read " + numBytesRead + " bytes.");