solved inputStream issues and getSerialPorts

example/build.gradle

@@ -14,8 +14,8 @@ android {
 
     compileOptions {
         encoding "UTF-8"
-        sourceCompatibility JavaVersion.VERSION_1_7
-        targetCompatibility JavaVersion.VERSION_1_7
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
     }
 }
 

examplemultipleports/src/main/java/com/felhr/examplemultipleports/MainActivity.java

@@ -17,6 +17,8 @@ import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import com.felhr.utils.HexData;
+
 import java.lang.ref.WeakReference;
 import java.util.Set;
 

examplemultipleports/src/main/java/com/felhr/examplemultipleports/UsbService.java

@@ -76,7 +76,7 @@ public class UsbService extends Service implements SerialPortCallback {
                         UsbSerialInterface.STOP_BITS_1,
                         UsbSerialInterface.PARITY_NONE,
                         UsbSerialInterface.FLOW_CONTROL_OFF);
-               if(ret)
+               if(!ret)
                    Toast.makeText(context, "Couldnt open the device", Toast.LENGTH_SHORT).show();
             } else if (arg1.getAction().equals(ACTION_USB_DETACHED)) {
                 UsbDevice usbDevice = arg1.getParcelableExtra(UsbManager.EXTRA_DEVICE);
@@ -107,8 +107,9 @@ public class UsbService extends Service implements SerialPortCallback {
                 readThreadCOM1 = new ReadThreadCOM(0,
                         serialPorts.get(0).getInputStream());
                 readThreadCOM1.start();
+            }
 
-            }else if(readThreadCOM2 == null){
+            if(readThreadCOM2 == null){
                 readThreadCOM2 = new ReadThreadCOM(1,
                         serialPorts.get(1).getInputStream());
                 readThreadCOM2.start();

examplesync/build.gradle

@@ -14,8 +14,8 @@ android {
 
     compileOptions {
         encoding "UTF-8"
-        sourceCompatibility JavaVersion.VERSION_1_7
-        targetCompatibility JavaVersion.VERSION_1_7
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
     }
 }
 

usbserial/src/main/java/com/felhr/usbserial/SerialInputStream.java

@@ -7,34 +7,45 @@ public class SerialInputStream extends InputStream
 {
     private int timeout = 0;
 
-    private int bufferSize =  16 * 1024;
+    private int maxBufferSize =  16 * 1024;
 
     private byte[] buffer;
+    private int pointer;
+    private int bufferSize;
 
     protected final UsbSerialInterface device;
 
     public SerialInputStream(UsbSerialInterface device)
     {
         this.device = device;
-        this.buffer = new byte[bufferSize];
+        this.buffer = new byte[maxBufferSize];
+        this.pointer = 0;
+        this.bufferSize = -1;
     }
 
-    public SerialInputStream(UsbSerialInterface device, int bufferSize)
+    public SerialInputStream(UsbSerialInterface device, int maxBufferSize)
     {
         this.device = device;
-        this.bufferSize = bufferSize;
-        this.buffer = new byte[this.bufferSize];
+        this.maxBufferSize = maxBufferSize;
+        this.buffer = new byte[this.maxBufferSize];
+        this.pointer = 0;
+        this.bufferSize = -1;
     }
 
     @Override
     public int read()
     {
-        byte[] buffer = new byte[bufferSize];
+        int value = checkFromBuffer();
+        if(value >= 0)
+            return value;
+
         int ret = device.syncRead(buffer, timeout);
-        if(ret >= 0)
-            return buffer[0];
-        else
+        if(ret >= 0) {
+            bufferSize = ret;
+            return buffer[pointer++];
+        }else {
             return -1;
+        }
     }
 
     @Override
@@ -43,7 +54,25 @@ public class SerialInputStream extends InputStream
         return device.syncRead(b, timeout);
     }
 
+    @Override
+    public int available() throws IOException {
+        if(bufferSize > 0)
+            return bufferSize - pointer;
+        else
+            return 0;
+    }
+
     public void setTimeout(int timeout) {
         this.timeout = timeout;
     }
+
+    private int checkFromBuffer(){
+        if(bufferSize > 0 && pointer < bufferSize){
+            return buffer[pointer++];
+        }else{
+            pointer = 0;
+            bufferSize = -1;
+            return -1;
+        }
+    }
 }

usbserial/src/main/java/com/felhr/usbserial/SerialPortBuilder.java

@@ -71,8 +71,8 @@ public class SerialPortBuilder {
                     .toList();
         }else{
             devices.addAll(Stream.of(getPossibleSerialPorts(context))
-                    .map(UsbDeviceStatus::new)
                     .filter(p -> !devices.contains(p))
+                    .map(UsbDeviceStatus::new)
                     .toList());
         }