運輸終點錯誤

我想通過藍牙發送文本從我的android顯示在串行顯示器爲arduino。當我點擊它時，我有一個應該發送文本的按鈕，但我不斷收到此錯誤。任何人都知道問題是什麼？運輸終點錯誤

01-12 01:53:10.849: E/BluetoothSocket(25004): java.io.IOException: Transport endpoint is not connected 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.bluetooth.BluetoothSocket.writeNative(Native Method) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.bluetooth.BluetoothSocket.write(BluetoothSocket.java:372) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.bluetooth.BluetoothOutputStream.write(BluetoothOutputStream.java:89) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at java.io.OutputStream.write(OutputStream.java:80) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at com.example.BluetoothExample.Send.stream(Send.java:120) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at com.example.BluetoothExample.Send$2.onClick(Send.java:57) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.view.View.performClick(View.java:2579) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.view.View$PerformClick.run(View.java:9246) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.os.Handler.handleCallback(Handler.java:587) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.os.Handler.dispatchMessage(Handler.java:92) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.os.Looper.loop(Looper.java:130) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at android.app.ActivityThread.main(ActivityThread.java:3735) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at java.lang.reflect.Method.invokeNative(Native Method) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at java.lang.reflect.Method.invoke(Method.java:507) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:662) 
01-12 01:53:10.849: E/BluetoothSocket(25004): at dalvik.system.NativeStart.main(Native Method)

我有一個非常簡單的arduino代碼。

int incomingByte; 
char val; 

void setup() { 
    pinMode(2, OUTPUT); 
    Serial.begin(9600); 
} 

void loop() { 

    if (Serial.available() > 0) { 
    val = Serial.read(); 
    Serial.println(val); 
    } 
    delay(100); 
    }

來源

2013-02-25 hauwa musa

您好，你能不能也包括你的代碼示例的頂部導入庫，並解釋遠一點你如何連接Arduino的到Android？ – 2013-02-26 22:14:19

你有沒有試圖改變println()到write()？象下面這樣：

if (Serial.available() > 0) { 
    val = Serial.read(); 
    Serial.write(val); 
}

來源

2015-10-14 14:48:15

運輸終點錯誤

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