FYP2 WEEK 8

Title: Testing Android application (S2 Bluetooth Terminal)

-      - To test the Android application of S2 Bluetooth Terminal whether it is compatible with the Bluetooth Module.

Interface between Bluetooth Terminal and Bluetooth Module

PROCEDURE

This process assumes the application of ‘S2 Bluetooth Terminal’ has been installed on smartphone and the type of Bluetooth module used is ‘HC-05’. Below is the procedure for communicating virtual communication between ‘S2 Bluetooth Terminal’ and ‘HC-05’ Bluetooth module.

Bluetooth settings

This is the first screen we will see when we want to let the virtual communication begins. Since ‘S2 Bluetooth Terminal’ is all about connecting phone to the Bluetooth module, the very first step to do is to search for Bluetooth device that we want to talk to. Sometimes we would find more than one device because of other Bluetooth devices around us. We need to find out which one is our device which has been set to the Bluetooth module. If our device does not appear on the phone screen, we should check if Bluetooth module is powered and discover able.

Bluetooth pairing request

            After found the device that we want to connect, tap on the ‘HC-05’ device and the Bluetooth pairing dialog will pop up. This is the part where we enter Bluetooth module’s PIN to begin pairing. The PIN act as a password and the PIN set will be ‘1234’. Some modules will have ‘0000’ but it is less common. Type it in and hit “OK”. If the PIN is right, pairing is done.

S2 Bluetooth Terminal’ application

        After pairing request is successful at the Bluetooth settings, we need to open up the ‘S2 Bluetooth Terminal’ application to make a connection with Bluetooth module. This application is terminal software for communication with the Bluetooth device by using SPP (Serial Port Profile) and equivalently liked to a serial port line connection including transmitter and receiver signal. Once again we need to select ‘HC-05’ device to make a connection. Then, the ‘connected to HC-05’ will pop op on the screen indicated that the connection between application and HC-05 Bluetooth module is successful. 

Successfully connected device

            As shown Figure 4.3 above, if we managed to add our Bluetooth device to application of ‘S2 Bluetooth Terminal’ we will see one new device, namely the device we added at the top of the phone screen. This time it should connect successfully indicated by a dialog of “connected: HC-05”. If not, repeat the pairing process.

Result and Analysis

            First of all, power on the Bluetooth. Then, at the Bluetooth settings, search for a device of HC-05 and begin the pairing with this device. The Bluetooth module will ask for password. Enter the correct password and it should start pairing. Later, take the smartphone and open up the Android application to let the virtual communication begin between the Bluetooth module and the smartphone. Hit the connect button shown at the Android application it should start connecting. If connection could be established the red LED on the Bluetooth module will double flicker per second and the green LED will continually light up.