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first working usb serial

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This commit is contained in:
Hendrik Schutter 2022-04-25 14:42:06 +02:00
parent 7747d0f876
commit 17b8ba745b
6 changed files with 202 additions and 5 deletions
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3
app/build.gradle
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@ -4,7 +4,7 @@ android {
compileSdkVersion 30
defaultConfig {
applicationId "hendrikschutter.com.externgnss"
minSdkVersion 14
minSdkVersion 17
targetSdkVersion 30
versionCode 1
versionName "1.0"
@ -27,4 +27,5 @@ dependencies {
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
implementation 'com.github.mik3y:usb-serial-for-android:3.4.3'
}

8
app/src/main/AndroidManifest.xml
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@ -4,6 +4,7 @@
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android." />
<application
android:allowBackup="true"
@ -16,9 +17,14 @@
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
</intent-filter>
<meta-data
android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
android:resource="@xml/usb_serial_devices"/>
</activity>
</application>

25
app/src/main/java/hendrikschutter/com/externgnss/MainActivity.java
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@ -2,7 +2,13 @@ package hendrikschutter.com.externgnss;
import android.Manifest;
import android.annotation.SuppressLint;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbDeviceConnection;
import android.hardware.usb.UsbManager;
import android.location.LocationListener;
import android.location.LocationManager;
import androidx.appcompat.app.AppCompatActivity;
@ -17,12 +23,20 @@ import pub.devrel.easypermissions.EasyPermissions;
import static java.lang.Thread.sleep;
import com.hoho.android.usbserial.driver.UsbSerialDriver;
import com.hoho.android.usbserial.driver.UsbSerialPort;
import com.hoho.android.usbserial.driver.UsbSerialProber;
import java.io.IOException;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private TextView output;
private LocationManager locationManager;
private boolean doRun = true;
private final Context cntxToastInternGNSSUpdate = this;
final String[] perms = {Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.INTERNET};
final String[] perms = {Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.INTERNET,};
private static final String INTENT_ACTION_GRANT_USB = BuildConfig.APPLICATION_ID + ".GRANT_USB";
private boolean bChange = true;
@Override
@ -30,6 +44,15 @@ public class MainActivity extends AppCompatActivity {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startLocationInit();
SerialUSB serialUSB = new SerialUSB(this);
}
// From https://github.com/googlesamples/easypermissions

163
app/src/main/java/hendrikschutter/com/externgnss/SerialUSB.java Normal file
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@ -0,0 +1,163 @@
package hendrikschutter.com.externgnss;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbDeviceConnection;
import android.hardware.usb.UsbManager;
import android.util.Log;
import com.hoho.android.usbserial.driver.UsbSerialDriver;
import com.hoho.android.usbserial.driver.UsbSerialPort;
import com.hoho.android.usbserial.driver.UsbSerialProber;
import com.hoho.android.usbserial.util.SerialInputOutputManager;
import java.io.IOException;
public class SerialUSB implements SerialInputOutputManager.Listener{
private MainActivity mainActivity = null;
private enum UsbPermission { Unknown, Requested, Granted, Denied }
private static final String INTENT_ACTION_GRANT_USB = BuildConfig.APPLICATION_ID + ".GRANT_USB";
private static final int WRITE_WAIT_MILLIS = 2000;
private static final int READ_WAIT_MILLIS = 2000;
private int deviceId, portNum, baudRate;
private boolean withIoManager;
private BroadcastReceiver broadcastReceiver = null;
//private final Handler mainLooper;
//private TextView receiveText;
//private ControlLines controlLines;
private SerialInputOutputManager usbIoManager;
private UsbSerialPort usbSerialPort;
private UsbPermission usbPermission = UsbPermission.Unknown;
private boolean connected = false;
public SerialUSB(MainActivity mainActivity){
this.mainActivity = mainActivity;
// Find all available drivers from attached devices.
UsbManager usbManager = (UsbManager) this.mainActivity.getSystemService(Context.USB_SERVICE);
UsbSerialProber usbDefaultProber = UsbSerialProber.getDefaultProber();
if (usbManager.getDeviceList().values().size() > 0){
UsbDevice device = (UsbDevice) usbManager.getDeviceList().values().toArray()[0];
UsbSerialDriver driver = usbDefaultProber.probeDevice(device);
if(driver == null) {
Log.i("SerialUSB", "driver is null");
}
if(driver != null) {
Log.i("SerialUSB", "ExternGNSS: device/driver found!");
this.deviceId = device.getDeviceId();
this.portNum = 0;
this.baudRate = 9600;
this.withIoManager = true;
}
}
broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if(INTENT_ACTION_GRANT_USB.equals(intent.getAction())) {
usbPermission = intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false) ? UsbPermission.Granted : UsbPermission.Denied;
connect();
} else {
Log.i("SerialUSB", "USB permissions are not set");
}
}
};
connect();
this.mainActivity.registerReceiver(broadcastReceiver, new IntentFilter(INTENT_ACTION_GRANT_USB));
}
private void connect() {
Log.i("connect", "starting to connect ...");
UsbDevice device = null;
UsbManager usbManager = (UsbManager) this.mainActivity.getSystemService(Context.USB_SERVICE);
for(UsbDevice v : usbManager.getDeviceList().values())
if(v.getDeviceId() == deviceId)
device = v;
if(device == null) {
Log.i("connect", "connection failed: device not found");
return;
}
UsbSerialDriver driver = UsbSerialProber.getDefaultProber().probeDevice(device);
/*
if(driver == null) {
driver = CustomProber.getCustomProber().probeDevice(device);
}
*/
if(driver == null) {
Log.i("connect", "connection failed: no driver for device");
return;
}
if(driver.getPorts().size() < portNum) {
Log.i("connect", "connection failed: not enough ports at device");
return;
}
usbSerialPort = driver.getPorts().get(portNum);
UsbDeviceConnection usbConnection = usbManager.openDevice(driver.getDevice());
if(usbConnection == null && usbPermission == UsbPermission.Unknown && !usbManager.hasPermission(driver.getDevice())) {
usbPermission = UsbPermission.Requested;
PendingIntent usbPermissionIntent = PendingIntent.getBroadcast(this.mainActivity, 0, new Intent(INTENT_ACTION_GRANT_USB), 0);
usbManager.requestPermission(driver.getDevice(), usbPermissionIntent);
return;
}
if(usbConnection == null) {
if (!usbManager.hasPermission(driver.getDevice()))
Log.i("connect", "connection failed: permission denied");
else
Log.i("connect", "connection failed: open failed");
return;
}
try {
usbSerialPort.open(usbConnection);
usbSerialPort.setParameters(baudRate, 8, 1, UsbSerialPort.PARITY_NONE);
if(withIoManager) {
usbIoManager = new SerialInputOutputManager(usbSerialPort, this);
usbIoManager.start();
}
Log.i("connect", "connected");
connected = true;
//controlLines.start();
} catch (Exception e) {
Log.i("connect", "connection failed: " + e.getMessage());
disconnect();
}
}
private void disconnect() {
connected = false;
//controlLines.stop();
if(usbIoManager != null) {
usbIoManager.setListener(null);
usbIoManager.stop();
}
usbIoManager = null;
try {
usbSerialPort.close();
} catch (IOException ignored) {}
usbSerialPort = null;
}
@Override
public void onNewData(byte[] data) {
Log.i("connect", "received data: " + data.length);
}
@Override
public void onRunError(Exception e) {
Log.e("SerialUSB", "runtime error: " + e.getMessage());
this.disconnect();
}
}

4
app/src/main/res/xml/usb_serial_devices.xml Normal file
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@ -0,0 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<usb-device vendor-id="1027" product-id="24577"/> <!-- 0x6001: FT232R -->
</resources>

4
build.gradle
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@ -6,8 +6,7 @@ buildscript {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:7.1.2'
classpath 'com.android.tools.build:gradle:7.1.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
@ -17,6 +16,7 @@ allprojects {
repositories {
google()
mavenCentral()
maven { url 'https://jitpack.io' }
}
}