Add .gitignore & images folder

.gitignore

@@ -0,0 +1,4 @@
+# Mac OS X clutter
+*.DS_Store
+.DS_Store
+

README.md

@@ -1,2 +1,54 @@
 # Bluetooth-RPi-Python
 A Python script running on Raspberry Pi 3 to receive commands (data) from / send executed results to an Android Device over bluetooth. Bluetooth-RPi-Python is used with this Android App: [Bluetooth-RPi](https://github.com/Yurockkk/Bluetooth-RPi) 
+
+## Instruction
+
+# Step 0 - Install the bluetooth softwares
+Open terminal, install softwares:
+`sudo apt-get update`
+`sudo apt-get install bluez bluez-utils minicom`
+
+# Step 1 - Setup the SPP (serial port profile): 
+Open terminal, edit this file
+`sudo nano /etc/systemd/system/dbus-org.bluez.service`
+Add `-C` at the end of the `ExecStart=` line, to start the bluetooth daemon in 'compatibility' mode. Add a new `ExecStartPost=` immediately after that line, to add the SP Profile. The two lines should look like this:
+`ExecStart=/usr/lib/bluetooth/bluetoothd -C`
+`ExecStartPost=/usr/bin/sdptool add SP`
+
+# Step 2 - Automatically listen to hci0 channel and run this python code:
+Create a new service unit file:
+`sudo nano /etc/systemd/system/rfcomm.service`
+
+Edit the file:
+```
+[Unit]
+Description=RFCOMM service
+After=bluetooth.service
+Requires=bluetooth.service
+
+[Service]	
+ExecStart=/usr/bin/rfcomm watch hci0 &; /usr/bin/python2 /home/pi/DIRECTORY_TO_YOUR_PYTHON_CODE/bluetooth_terminal_Yubo.py	
+
+[Install]
+WantedBy=multi-user.target
+
+```
+
+**NOTE:** There is only one line of code in **[Service]** section and there is a space between `bin/python2` and /home
+
+Save it, Enable the service unit file:
+`sudo systemctl enable rfcomm`
+
+# Step 3 - Add the bash command `hciconfig hci0 piscan` in the file “/etc/rc.local” (before the last line of “exit 0”):
+
+`sudo nano /etc/rc.local`
+
+![](images/rc.png)
+
+# Step 4 - Set the “discoverableTimeout” to “0” in the file “/etc/bluetooth/main.conf”:
+`sudo nano /etc/bluetooth/main.conf`
+
+![](images/main.png)
+
+# Step 5 Reboot your RPi. Now, your RPi is able to receive commands (data) from / send executed results to an Android device.
+

bluetooth_terminal_Yubo_wifi2.py → bluetooth-RPi-wifi.py

@@ -27,14 +27,34 @@ def is_json(self, mJson):
             json_object = json.loads(mJson)
             if isinstance(json_object, int):
                 return False
-            print("type of json_object: " , type(json_object))
-            print("length of json: ", len(json_object))
+
             if len(json_object) == 0:
                 return False
         except ValueError, e:
             return False
         return True
 
+    def readExecuteSend(self, shell, ble_comm, ble_line):
+
+        json_object = json.loads(ble_line)
+        ip_address = ble_comm.wifi_connect(json_object['SSID'], json_object['PWD'])
+        if ip_address == "<Not Set>":
+            #send back fail to configure wifi
+            callback_message = {'result': "FAIL", 'IP': ip_address}
+            callback_json = json.dumps(callback_message)
+            ble_comm.send_serial(callback_json)
+            return False
+
+        else:
+            #isConnected = True
+            #send back configure wifi succesfully
+            callback_message = {'result': "SUCCESS", 'IP': ip_address}
+            callback_json = json.dumps(callback_message)
+            ble_comm.send_serial(callback_json)
+
+            return True
+
+
     def wifi_connect(self, ssid, psk):
         # write wifi config to file
         f = open('wifi.conf', 'w')
@@ -114,42 +134,27 @@ def main():
     shell = ShellWrapper()
 
     ble_comm = None
-    isConfigured = False
     isConnected = False
     while True:
         try:
             ble_comm = SerialComm()
-            out = ble_comm.read_serial()        
+            out = ble_comm.read_serial()
             for ble_line in out:
                 print(out)
                 if ble_comm.is_json(ble_line):
-                    print("json!!")
                     if not isConnected:
-                        print("is not connected yet!!")
-                        json_object = json.loads(ble_line)
-                        ip_address = ble_comm.wifi_connect(json_object['SSID'], json_object['PWD'])
-                        if ip_address == "<Not Set>":
-                            print("Fail to connect to Internet")
-                            #send back fail to configure wifi
-                            callback_message = {'result': "FAIL", 'IP': ip_address}
-                            callback_json = json.dumps(callback_message)
-                            ble_comm.send_serial(callback_json)
-                        else:
-                            isConnected = True
-                            print("connect to Internet! your ip_address: " + ip_address)
-                            #send back configure wifi succesfully
-                            callback_message = {'result': "SUCCESS", 'IP': ip_address}
-                            callback_json = json.dumps(callback_message)
-                            ble_comm.send_serial(callback_json)
-
-                        print("callback_json: " + callback_json)
+                        isConnected = ble_comm.readExecuteSend(shell, ble_comm, ble_line)
+                        break
+                    else:
+                        ble_comm.send_serial("Wifi has been configured")
                         break
-                    
+
                 shell.execute_command(ble_line)
                 shell_out = shell.get_output()
                 for l in shell_out:
                     print(l)
                     ble_comm.send_serial(l)
+
 
         except serial.SerialException:
             print("waiting for connection")