I want to know if "ble_app_template" can achieve my purpose or should i use other example in SDK........thanks a lot
The ble_app_template is not a good example for this. You need to know which service you want in your example for which you want notifications to be received in the PC (using pc-ble-driver) so that you can draw a graph for it using external tools. If drawing graph is your main goal for now for the data that you get from the BLE device, then hids (mouse/keyboard) example might not be a good example as well as these data are consumed by the OS input events manager. You can use any peripheral example on the nRF device, write an application to discover the services
Maybe you can use hrs example on peripheral and use the heart_rate_collector example on the central side device that is connected to the HRS peripheral example on the peer side. The executable that is generated on the PC side is very specific to giving you debug log on the com port, and you need to edit this application to be able to grab the notification value and graph it to which ever plugin you use
