Micropython code for the HC05 Bluetooth adaptor and an example application for android devices made specifically for the HC05.
# code by Kipling
print("(Main program started)")
import pyb
# HC05 connection with the PyBoard
#
# HC06 - PyBoard
# --------------
# GND - GND
# VCC - VCC
# RXD - X3 (TX)
# TXD - x4 (RX)
blue_uart = pyb.UART(2, 9600)
blue_uart.init(9600, bits=8, stop=1, parity=None)
#pyb.repl_uart(blue_uart)
while True:
if blue_uart.any():
line = blue_uart.readline()
line = str(line,'utf-8')
if line[-5:-1] == "BTM-":
if line[-5:] == "BTM-U":
print("UP")
blue_uart.write("GO UP")
# Write you code here
elif line[-5:] == "BTM-D":
print("DOWN")
blue_uart.write("GO DOWN")
# Write you code here
elif line[-5:] == "BTM-L":
print("LEFT")
blue_uart.write("GO LEFT")
# Write you code here
elif line[-5:] == "BTM-R":
print("RIGHT")
blue_uart.write("GO RIGHT")
# Write you code here
else:
print(line)
blue_uart.write("You sent: " + line)
# Write you code here
package com.example.kipling.bletooth;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Set;
import java.util.UUID;
import static android.content.ContentValues.TAG;
public class MainActivity extends Activity {
EditText bluetoothSend;
private BluetoothAdapter bluetoothAdapter;
private Set<BluetoothDevice>pairedDevices;
private static UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
private OutputStream mmOutStream;
private InputStream mmInStream;
private BluetoothSocket mmSocket;
private byte[] mmBuffer; // mmBuffer store for the stream
private TextView textView;
private Handler mHandler; // handler that gets info from Bluetooth service
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bluetoothSend = (EditText) findViewById(R.id.bluetooth_word);
textView = (TextView) findViewById(R.id.textView2);
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
mmSocket = null;
on();
connector();
th.start();
}
// This is to turn on the bluetooth adapter if it is not already on
public void on(){
if (!bluetoothAdapter.isEnabled()) {
Intent turnOn = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(turnOn, 0);
Toast.makeText(getApplicationContext(), "Turned on",Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(), "Already on", Toast.LENGTH_LONG).show();
}
}
// Call this to turn off the bluetooth adapter (not used)
public void off(View v){
bluetoothAdapter.disable();
Toast.makeText(getApplicationContext(), "Turned off" ,Toast.LENGTH_LONG).show();
}
// If connection is not established on app startup (onCreate) try again with this method
public void connect(View v){
try{
String name = "CONNECTED";
byte[] bytes = name.getBytes();
mmOutStream.write(bytes);
}catch (IOException e){
Toast.makeText(getApplicationContext(), "Connecting..." ,Toast.LENGTH_LONG).show();
connector();
}
}
public void connector(){
OutputStream tmpOut = null;
InputStream tmpIn = null;
// Get list of paired devices
BluetoothSocket tmp = null;
String dname;
pairedDevices = bluetoothAdapter.getBondedDevices();
BluetoothDevice device = null;
if(pairedDevices.size() >0) {
for (BluetoothDevice bt : pairedDevices) {
Log.d("TAG", bt.getName());
dname = bt.getName();
if (dname.equals("HC-05")) {
device = bt;
Log.d("TAG", "HC-05 PARED!!!");
//Toast.makeText(getApplicationContext(), device.getName(), Toast.LENGTH_LONG).show();
} else {
Log.d("TAG", "Not HC-05");
}
}
try {
// MY_UUID is the app's UUID string, also used by the client code.
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
} catch (IOException e) {
Log.d("TAG", "Socket's listen() method failed", e);
Toast.makeText(getApplicationContext(), "Error 1" ,Toast.LENGTH_LONG).show();
}
mmSocket = tmp;
bluetoothAdapter.cancelDiscovery();
try {
// Connect to the remote device through the socket. This call blocks
// until it succeeds or throws an exception.
mmSocket.connect();
Log.d("TAG", "Socket connected!!!!!");
Toast.makeText(getApplicationContext(), "Connected" ,Toast.LENGTH_LONG).show();
} catch (IOException connectException) {}
try {
tmpIn = mmSocket.getInputStream();
} catch (IOException e) {
Log.e(TAG, "Error occurred when creating input stream", e);
}
try {
tmpOut = mmSocket.getOutputStream();
} catch (IOException e) {
Log.e(TAG, "Error occurred when creating output stream", e);
Toast.makeText(getApplicationContext(), "Error 2" ,Toast.LENGTH_LONG).show();
}
mmOutStream = tmpOut;
mmInStream = tmpIn;
}else{
Log.d("TAG", "No devices");
Toast.makeText(getApplicationContext(), "HC-05 is not pared", Toast.LENGTH_LONG).show();
}
}
// thread to listen to the input data from HC05 (not perfect)
Thread th = new Thread(new Runnable() {
public void run() {
mmBuffer = new byte[4096];
int numBytes; // bytes returned from read()
// Keep listening to the InputStream until an exception occurs.
while (true) {
try {
if(mmInStream.available()>2) {
Log.d("TAG","mmInStream.available()>2");
// Read from the InputStream.
numBytes = mmInStream.read(mmBuffer);
final String readMessage = new String(mmBuffer, 0, numBytes);
runOnUiThread(new Runnable() {
@Override
public void run() {
textView.setText(readMessage);
}
});
Log.d("TAG", readMessage);
}else{
SystemClock.sleep(100);
Log.d("TAG", "No Data");
}
} catch (IOException e) {
Log.d("TAG", "Input stream was disconnected", e);
break;
}
}
}
});
// Receives commands from the UI to send to HC05
public void write(View v) {
String name = bluetoothSend.getText().toString();
byte[] bytes = name.getBytes();
Log.d("TAG","Pressed: "+name);
try {
mmOutStream.write(bytes);
} catch (IOException e) {
e.printStackTrace();
Log.d("TAG","");
Toast.makeText(getApplicationContext(), "Send failed" ,Toast.LENGTH_LONG).show();
}
}
public void up(View v){
String name = "BTM-U";
byte[] bytes = name.getBytes();
Log.d("TAG","Pressed: "+name);
try {
mmOutStream.write(bytes);
} catch (IOException e) {
e.printStackTrace();
Log.d("TAG",""+e);
Toast.makeText(getApplicationContext(), "Send failed" ,Toast.LENGTH_LONG).show();
}
}
public void down(View v){
String name = "BTM-D";
byte[] bytes = name.getBytes();
Log.d("TAG","Pressed: "+name);
try {
mmOutStream.write(bytes);
} catch (IOException e) {
e.printStackTrace();
Log.d("TAG",""+e);
Toast.makeText(getApplicationContext(), "Send failed" ,Toast.LENGTH_LONG).show();
}
}
public void left(View v){
String name = "BTM-L";
byte[] bytes = name.getBytes();
Log.d("TAG","Pressed: "+name);
try {
mmOutStream.write(bytes);
} catch (IOException e) {
e.printStackTrace();
Log.d("TAG",""+e);
Toast.makeText(getApplicationContext(), "Send failed" ,Toast.LENGTH_LONG).show();
}
}
public void right(View v){
String name = "BTM-R";
byte[] bytes = name.getBytes();
Log.d("TAG","Pressed: "+name);
try {
mmOutStream.write(bytes);
} catch (IOException e) {
e.printStackTrace();
Log.d("TAG",""+e);
Toast.makeText(getApplicationContext(), "Send failed" ,Toast.LENGTH_LONG).show();
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:transitionGroup="true">
<TextView android:text="HC05"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/textview"
android:textSize="35dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView"
android:layout_below="@+id/textView"
android:layout_centerHorizontal="true"
android:theme="@style/Base.TextAppearance.AppCompat" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Connect"
android:onClick="connect"
android:id="@+id/button3"
android:layout_below="@+id/textview"
android:layout_alignLeft="@+id/buttonLEFT"
android:layout_alignStart="@+id/buttonLEFT" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="UP"
android:onClick="up"
android:id="@+id/buttonUP"
android:layout_marginTop="11dp"
android:layout_below="@+id/textview"
android:layout_alignLeft="@+id/buttonDOWN"
android:layout_alignStart="@+id/buttonDOWN" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="DOWN"
android:onClick="down"
android:id="@+id/buttonDOWN"
android:layout_below="@+id/buttonLEFT"
android:layout_centerHorizontal="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="LEFT"
android:onClick="left"
android:id="@+id/buttonLEFT"
android:layout_below="@+id/buttonUP"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="11dp"
android:layout_marginStart="11dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="RIGHT"
android:onClick="right"
android:id="@+id/buttonRIGHT"
android:layout_below="@+id/buttonUP"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="13dp"
android:layout_marginEnd="13dp" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/bluetooth_word"
android:text="Input text"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_toLeftOf="@+id/buttonSEND"
android:layout_toStartOf="@+id/buttonSEND" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SEND"
android:onClick="write"
android:id="@+id/buttonSEND"
android:layout_alignBottom="@+id/bluetooth_word"
android:layout_alignLeft="@+id/buttonRIGHT"
android:layout_alignStart="@+id/buttonRIGHT" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Received Data"
android:id="@+id/textView2"
android:textColor="#ff34ff06"
android:textSize="25dp"
android:layout_alignParentBottom="true"
android:layout_alignRight="@+id/buttonRIGHT"
android:layout_alignEnd="@+id/buttonRIGHT"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/bluetooth_word" />
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.kipling.bletooth">
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
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