Merge "Add SerialPort.sendBreak()" into ics-aah

api/current.txt

@@ -9614,6 +9614,7 @@ package android.hardware {
     method public void close() throws java.io.IOException;
     method public java.lang.String getName();
     method public int read(java.nio.ByteBuffer) throws java.io.IOException;
+    method public void sendBreak();
     method public void write(java.nio.ByteBuffer, int) throws java.io.IOException;
   }
 

core/java/android/hardware/SerialPort.java

@@ -113,10 +113,18 @@ public class SerialPort {
         }
     }
 
+    /**
+     * Sends a stream of zero valued bits for 0.25 to 0.5 seconds
+     */
+    public void sendBreak() {
+        native_send_break();
+    }
+
     private native void native_open(FileDescriptor pfd, int speed) throws IOException;
     private native void native_close();
     private native int native_read_array(byte[] buffer, int length) throws IOException;
     private native int native_read_direct(ByteBuffer buffer, int length) throws IOException;
     private native void native_write_array(byte[] buffer, int length) throws IOException;
     private native void native_write_direct(ByteBuffer buffer, int length) throws IOException;
+    private native void native_send_break();
 }

core/jni/android_hardware_SerialPort.cpp

@@ -234,6 +234,13 @@ android_hardware_SerialPort_write_direct(JNIEnv *env, jobject thiz, jobject buff
         jniThrowException(env, "java/io/IOException", NULL);
 }
 
+static void
+android_hardware_SerialPort_send_break(JNIEnv *env, jobject thiz)
+{
+    int fd = env->GetIntField(thiz, field_context);
+    tcsendbreak(fd, 0);
+}
+
 static JNINativeMethod method_table[] = {
     {"native_open",             "(Ljava/io/FileDescriptor;I)V",
                                         (void *)android_hardware_SerialPort_open},
@@ -246,6 +253,7 @@ static JNINativeMethod method_table[] = {
                                         (void *)android_hardware_SerialPort_write_array},
     {"native_write_direct",     "(Ljava/nio/ByteBuffer;I)V",
                                         (void *)android_hardware_SerialPort_write_direct},
+    {"native_send_break",       "()V",  (void *)android_hardware_SerialPort_send_break},
 };
 
 int register_android_hardware_SerialPort(JNIEnv *env)