我下载代码草图6：发送接收字节来自此站点：http://arduinobasics.blogspot.com.tr/2013/03/arduinobasics-bluetooth-android_25.html我可以在屏幕上看到“设备已发现:(设备名称）和FOUND。但我无法连接到设备（我尝试从Galaxy s4连接到HC05蓝牙模块。（我从未见过紫色屏幕。我只是绿色，我认为问题是在“foundDevice = true;”之后请检查它。它是我的最后一年项目，我不能做任何事情没有它:(
`/ * SendReceiveBytes：由ScottC于2013年3月25日撰写 处理版本2.0b8 在三星Galaxy SII上测试，Android版本为2.3.4 Android ADK - API 10 SDK平台* /
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.widget.Toast;
import android.view.Gravity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import java.util.UUID;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
public BluetoothSocket scSocket;
boolean foundDevice=false; //When true, the screen turns green.
boolean BTisConnected=false; //When true, the screen turns purple.
String serverName = "ArduinoBasicsServer";
// Message types used by the Handler
public static final int MESSAGE_WRITE = 1;
public static final int MESSAGE_READ = 2;
String readMessage="";
//Get the default Bluetooth adapter
BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter();
/*The startActivityForResult() within setup() launches an
Activity which is used to request the user to turn Bluetooth on.
The following onActivityResult() method is called when this
Activity exits. */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode==0) {
if (resultCode == RESULT_OK) {
ToastMaster("Bluetooth has been switched ON");
}
else {
ToastMaster("You need to turn Bluetooth ON !!!");
}
}
}
/* Create a BroadcastReceiver that will later be used to
receive the names of Bluetooth devices in range. */
BroadcastReceiver myDiscoverer = new myOwnBroadcastReceiver();
/* Create a BroadcastReceiver that will later be used to
identify if the Bluetooth device is connected */
BroadcastReceiver checkIsConnected = new myOwnBroadcastReceiver();
// The Handler that gets information back from the Socket
private final Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_WRITE:
//Do something when writing
break;
case MESSAGE_READ:
//Get the bytes from the msg.obj
byte[] readBuf = (byte[]) msg.obj;
// construct a string from the valid bytes in the buffer
readMessage = new String(readBuf, 0, msg.arg1);
break;
}
}
};
void setup() {
orientation(LANDSCAPE);
/*IF Bluetooth is NOT enabled, then ask user permission to enable it */
if (!bluetooth.isEnabled()) {
Intent requestBluetooth = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(requestBluetooth, 0);
}
/*If Bluetooth is now enabled, then register a broadcastReceiver to report any
discovered Bluetooth devices, and then start discovering */
if (bluetooth.isEnabled()) {
registerReceiver(myDiscoverer, new IntentFilter(BluetoothDevice.ACTION_FOUND));
registerReceiver(checkIsConnected, new IntentFilter(BluetoothDevice.ACTION_ACL_CONNECTED));
//Start bluetooth discovery if it is not doing so already
if (!bluetooth.isDiscovering()) {
bluetooth.startDiscovery();
}
}
}
void draw() {
//Display a green screen if a device has been found,
//Display a purple screen when a connection is made to the device
if (foundDevice) {
if (BTisConnected) {
background(170, 50, 255); // purple screen
}
else {
background(10, 255, 10); // green screen
}
}
//Display anything received from Arduino
text(readMessage, 10, 10);
}
/* This BroadcastReceiver will display discovered Bluetooth devices */
public class myOwnBroadcastReceiver extends BroadcastReceiver {
ConnectToBluetooth connectBT;
@Override
public void onReceive(Context context, Intent intent) {
String action=intent.getAction();
ToastMaster("ACTION:" + action);
//Notification that BluetoothDevice is FOUND
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
//Display the name of the discovered device
String discoveredDeviceName = intent.getStringExtra(BluetoothDevice.EXTRA_NAME);
ToastMaster("Discovered: " + discoveredDeviceName);
//Display more information about the discovered device
BluetoothDevice discoveredDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
ToastMaster("getAddress() = " + discoveredDevice.getAddress());
ToastMaster("getName() = " + discoveredDevice.getName());
int bondyState=discoveredDevice.getBondState();
ToastMaster("getBondState() = " + bondyState);
String mybondState;
switch(bondyState) {
case 10:
mybondState="BOND_NONE";
break;
case 11:
mybondState="BOND_BONDING";
break;
case 12:
mybondState="BOND_BONDED";
break;
default:
mybondState="INVALID BOND STATE";
break;
}
ToastMaster("getBondState() = " + mybondState);
//Change foundDevice to true which will make the screen turn green
foundDevice=true;
//Connect to the discovered bluetooth device (SeeedBTSlave)
if (discoveredDeviceName.equals("SeeedBTSlave")) {
ToastMaster("Connecting you Now !!");
unregisterReceiver(myDiscoverer);
connectBT = new ConnectToBluetooth(discoveredDevice);
//Connect to the the device in a new thread
new Thread(connectBT).start();
}
}
//Notification if bluetooth device is connected
if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(action)) {
ToastMaster("CONNECTED _ YAY");
while (scSocket==null) {
//do nothing
}
ToastMaster("scSocket" + scSocket);
BTisConnected=true; //turn screen purple
if (scSocket!=null) {
SendReceiveBytes sendReceiveBT = new SendReceiveBytes(scSocket);
new Thread(sendReceiveBT).start();
String red = "r";
byte[] myByte = stringToBytesUTFCustom(red);
sendReceiveBT.write(myByte);
}
}
}
}
public static byte[] stringToBytesUTFCustom(String str) {
char[] buffer = str.toCharArray();
byte[] b = new byte[buffer.length << 1];
for (int i = 0; i < buffer.length; i++) {
int bpos = i << 1;
b[bpos] = (byte) ((buffer[i]&0xFF00)>>8);
b[bpos + 1] = (byte) (buffer[i]&0x00FF);
}
return b;
}
public class ConnectToBluetooth implements Runnable {
private BluetoothDevice btShield;
private BluetoothSocket mySocket = null;
private UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
public ConnectToBluetooth(BluetoothDevice bluetoothShield) {
btShield = bluetoothShield;
try {
mySocket = btShield.createRfcommSocketToServiceRecord(uuid);
}
catch(IOException createSocketException) {
//Problem with creating a socket
Log.e("ConnectToBluetooth", "Error with Socket");
}
}
@Override
public void run() {
/* Cancel discovery on Bluetooth Adapter to prevent slow connection */
bluetooth.cancelDiscovery();
try {
/*Connect to the bluetoothShield through the Socket. This will block
until it succeeds or throws an IOException */
mySocket.connect();
scSocket=mySocket;
}
catch (IOException connectException) {
Log.e("ConnectToBluetooth", "Error with Socket Connection");
try {
mySocket.close(); //try to close the socket
}
catch(IOException closeException) {
}
return;
}
}
/* Will cancel an in-progress connection, and close the socket */
public void cancel() {
try {
mySocket.close();
}
catch (IOException e) {
}
}
}
private class SendReceiveBytes implements Runnable {
private BluetoothSocket btSocket;
private InputStream btInputStream = null;
private OutputStream btOutputStream = null;
String TAG = "SendReceiveBytes";
public SendReceiveBytes(BluetoothSocket socket) {
btSocket = socket;
try {
btInputStream = btSocket.getInputStream();
btOutputStream = btSocket.getOutputStream();
}
catch (IOException streamError) {
Log.e(TAG, "Error when getting input or output Stream");
}
}
public void run() {
byte[] buffer = new byte[1024]; // buffer store for the stream
int bytes; // bytes returned from read()
// Keep listening to the InputStream until an exception occurs
while (true) {
try {
// Read from the InputStream
bytes = btInputStream.read(buffer);
// Send the obtained bytes to the UI activity
mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer)
.sendToTarget();
}
catch (IOException e) {
Log.e(TAG, "Error reading from btInputStream");
break;
}
}
}
/* Call this from the main activity to send data to the remote device */
public void write(byte[] bytes) {
try {
btOutputStream.write(bytes);
}
catch (IOException e) {
Log.e(TAG, "Error when writing to btOutputStream");
}
}
/* Call this from the main activity to shutdown the connection */
public void cancel() {
try {
btSocket.close();
}
catch (IOException e) {
Log.e(TAG, "Error when closing the btSocket");
}
}
}
/* My ToastMaster function to display a messageBox on the screen */
void ToastMaster(String textToDisplay) {
Toast myMessage = Toast.makeText(getApplicationContext(),
textToDisplay,
Toast.LENGTH_SHORT);
myMessage.setGravity(Gravity.CENTER, 0, 0);
myMessage.show();
}`
答案 0 :(得分：1)
你好我改变了我最后一年项目准备的代码。 我删除了一些与RGB相关的代码。我建议你查看可链式RGB的数据表。看一下数据表的代码底部，你会清楚地了解到哪里有另一个代码。 无论如何。我用伺服电机代替RGB。正如我之前所说，我将bt设备的名称改为HC-05。
#include <SoftwareSerial.h>
//#define uint8 unsigned char
//#define uint16 unsigned int
//#define uint32 unsigned long int
#define RxD 6 // This is the pin that the Bluetooth (BT_TX) will transmit to the Arduino (RxD)
#define TxD 7 // This is the pin that the Bluetooth (BT_RX) will receive from the Arduino (TxD)
#define DEBUG_ENABLED 1
Servo myservo ;
int led = 9 ;
SoftwareSerial blueToothSerial(RxD, TxD);
/*----------------------SETUP----------------------------*/
void setup() {
myservo.attach(10);
myservo.write(0);
Serial.begin(9600);//low Serial communication via USB cable to computer (if required)
pinMode(RxD, INPUT); // Setup the Arduino to receive INPUT from the bluetooth shield on Digital Pin 6
pinMode(TxD, OUTPUT); // Setup the Arduino to send data (OUTPUT) to the bluetooth shield on Digital Pin 7
pinMode(13, OUTPUT); // Use onboard LED if required.
pinMode(9,OUTPUT);
setupBlueToothConnection(); //Used to initialise the Bluetooth shield
}
/*----------------------LOOP----------------------------*/
void loop() {
digitalWrite(13, LOW); //Turn off the onboard Arduino LED
char recvChar;
while (1) {
if (blueToothSerial.available()) {//check if there's any data sent from the remote bluetooth shield
recvChar = blueToothSerial.read();
Serial.print(recvChar); // Print the character received to the Serial Monitor (if required)
//If the character received = 'r' , then change the RGB led to display a RED colour
if (recvChar=='r') {
myservo.write(100);
// Send32Zero(); // begin
// DataDealWithAndSend(255, 0, 0); // first node data
// Send32Zero(); // send to update data
digitalWrite(led,HIGH);
delay(500);
}
//If the character received = 'g' , then change the RGB led to display a GREEN colour
if (recvChar=='g') {
digitalWrite(led,LOW);
myservo.write(50);
}
//If the character received = 'b' , then change the RGB led to display a BLUE colour
if (recvChar=='b') {
// Send32Zero(); // begin
// DataDealWithAndSend(0, 0, 255); // first node data
// Send32Zero(); // send to update data
digitalWrite(led,HIGH);
myservo.write(180);
}
//If the character received = 'x' , then turn RGB led OFF
if (recvChar=='x') {
// Send32Zero(); // begin
// DataDealWithAndSend(0, 0, 0); // first node data
// Send32Zero(); // send to update data
digitalWrite(led,LOW);
myservo.write(0);
}
}
//You can use the following code to deal with any information coming from the Computer (serial monitor)
if (Serial.available()) {
recvChar = Serial.read();
//This will send value obtained (recvChar) to the phone. The value will be displayed on the phone.
blueToothSerial.print(recvChar);
}
}
}
//The following code is necessary to setup the bluetooth shield ------copy and paste----------------
void setupBlueToothConnection()
{
blueToothSerial.begin(9600);// BluetoothBee BaudRate to default baud rate 38400
blueToothSerial.print("\r\n+STWMOD=0\r\n"); //set the bluetooth work in slave mode
blueToothSerial.print("\r\n+STNA=HC-05\r\n"); //set the bluetooth name as "SeeedBTSlave"
blueToothSerial.print("\r\n+STOAUT=1\r\n"); // Permit Paired device to connect me
blueToothSerial.print("\r\n+STAUTO=0\r\n"); // Auto-connection should be forbidden here
delay(2000); // This delay is required.
blueToothSerial.print("\r\n+INQ=1\r\n"); //make the slave bluetooth inquirable
Serial.println("The slave bluetooth is inquirable!");
delay(2000); // This delay is required.
blueToothSerial.flush();
}