（Android工作室）无法获得arduino lightsensor数据 [英] (Android studios) unable to get arduino lightsensor data
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问题描述
您好，我无法从Arduino 检索数据。我的代码有什么问题吗？谢谢！
Android Studio Code
Hello, I am unable to retrieve the data from Arduino. Is there anything wrong with my code? Thank You!
Android Studio Code
package com.example.a17019501.bluetootharduino;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Intent;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import org.w3c.dom.Text;
import java.io.IOException;
import java.io.InputStream;
import java.util.Set;
import java.util.UUID;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
//Layout//
TextView adapterStatus;
TextView lightValue;
//Bluetooth//
BluetoothAdapter mBluetoothAdapter;
BluetoothDevice mDevice;
Set <BluetoothDevice> pairedDevices;
ConnectThread mConnectThread;
ConnectedThread mConnectedThread;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
adapterStatus = findViewById(R.id.tvAdapterStatus);
lightValue = findViewById(R.id.tvLightValue);
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter == null) {
adapterStatus.setText("Device does not support bluetooth");
}
else {
adapterStatus.setText("Device support bluetooth");
}
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 1);
}
pairedDevices = mBluetoothAdapter.getBondedDevices();
if (pairedDevices.size() > 0) {
for (BluetoothDevice device : pairedDevices) {
mDevice = device;
}
}
mConnectThread = new ConnectThread(mDevice);
mConnectThread.start();
Log.i(TAG, "Connect to device: " + mDevice.getName());
}
public class ConnectThread extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
private final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb");
public ConnectThread(BluetoothDevice device) {
BluetoothSocket tmp = null;
mmDevice = device;
try {
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) { }
mmSocket = tmp;
}
public void run() {
mBluetoothAdapter.cancelDiscovery();
try {
mmSocket.connect();
} catch (IOException connectException) {
try {
mmSocket.close();
} catch (IOException closeException) { }
return;
}
mConnectedThread = new ConnectedThread(mmSocket);
mConnectedThread.start();
}
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) { }
}
}
public class ConnectedThread extends Thread {
private final BluetoothSocket mmSocket;
private final InputStream mmInstream;
public ConnectedThread(BluetoothSocket socket) {
Log.i(TAG, "Connected Thread");
mmSocket = socket;
InputStream tmpIn = null;
try {
tmpIn = mmSocket.getInputStream();
} catch (IOException e) {
e.printStackTrace();
}
mmInstream = tmpIn;
}
public void run() {
byte[] buffer = new byte[1024];
int bytes;
while (true) {
try {
bytes = mmInstream.read(buffer);
Log.i(TAG, "Buffer read");
String incomingMsg = new String(buffer, 0, bytes);
mHandler.obtainMessage(1, bytes, -1, buffer);
Log.i(TAG, "InputStream " + incomingMsg);
} catch (IOException e) {
e.printStackTrace();
Log.i(TAG, "Error reading input " + e.getMessage());
}
}
}
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) {
}
}
}
Handler mHandler = new Handler() {
String s;
@Override
public void handleMessage(Message msg) {
switch(msg.what) {
case 1:
s = (String) msg.obj;
if (s!=null) {
lightValue.setText(Integer.parseInt(s));
}
break;
}
}
};
}
Arduino代码
Arduino Code
<pre>#include <SoftwareSerial.h>
const int LightSensor = A1; //LightSensor pin at A1
int bluetoothTx = 2; //BTTX at pin 2
int bluetoothRx = 3; //BTRX at pin 3
int sensorValue = 0;
SoftwareSerial bluetooth(bluetoothTx, bluetoothRx);
void setup() {
Serial.begin(9600); // Begin the serial monitor at 9600bps
//
// bluetooth.begin(115200); // The Bluetooth Mate defaults to 115200bps
// bluetooth.print("$"); // Print three times individually
// bluetooth.print("$");
// bluetooth.print("$"); // Enter command mode
// delay(100); // Short delay, wait for the Mate to send back CMD
// bluetooth.println("U,9600,N"); // Temporarily Change the baudrate to 9600, no parity
// // 115200 can be too fast at times for NewSoftSerial to relay the data reliably
bluetooth.begin(9600); // Start bluetooth serial at 9600
}
void loop() {
sensorValue = analogRead(LightSensor);
bluetooth.print(sensorValue);
Serial.println(sensorValue);
delay(2500);
}
我的尝试：
大部分在线教程。
What I have tried:
Mostly all the tutorials online.
推荐答案
）; //单独打印三次
// bluetooth.print（
"); // Print three times individually // bluetooth.print("
）;
// bluetooth.print（
"); // bluetooth.print("
）; //输入命令模式
//延迟（100）; //短暂延迟，等待Mate发送回CMD
// bluetooth.println（U，9600，N）; //暂时将波特率更改为9600，无奇偶校验
// // 115200有时可能太快，NewSoftSerial可以可靠地中继数据
bluetooth.begin（9600）; //启动蓝牙序列9600
}
void loop（）{
sensorValue = analogRead（LightSensor）;
bluetooth.print（sensorValue）;
Serial.println（sensorValue）;
delay（2500）;
}
"); // Enter command mode // delay(100); // Short delay, wait for the Mate to send back CMD // bluetooth.println("U,9600,N"); // Temporarily Change the baudrate to 9600, no parity // // 115200 can be too fast at times for NewSoftSerial to relay the data reliably bluetooth.begin(9600); // Start bluetooth serial at 9600 } void loop() { sensorValue = analogRead(LightSensor); bluetooth.print(sensorValue); Serial.println(sensorValue); delay(2500); }
我尝试过：
主要是所有在线教程。
What I have tried:
Mostly all the tutorials online.
这篇关于（Android工作室）无法获得arduino lightsensor数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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