BLE Central demo application

Overview

This application is an example of BLE central role device implementation. It connects to a remote device, searches for services, characteristic and descriptors. All details of the discovered characteristics will be printed over UART. Application uses two methods of searching for attributes: browse API and discovery API. It can be configured with flag CFG_USE_BROWSE_API in ble_central_config.h. Application can also write the remote device name characteristic if CFG_UPDATE_NAME in ble_central_config.h is set.

Features:

• application implements BLE central role device
• once the application is started, it connects to a remote device
• details of the discovered attributes are printed out to console
• application subscribes for notifications and indications
• application writes remote device name if flag CFG_UPDATE_NAME in ble_central_config.h is set

Installation procedure

The project is located in the projects/dk_apps/features/ble_central folder.

To install the project follow the General Installation and Debugging Procedure.

Suggested configurable parameters

• set CFG_USE_BROWSE_API flag to enable Browse API or discovery API
• set CFG_UPDATE_NAME flag if application should write remote device name characteristic
• set addr variable in ble_central_task.c to peripheral device address

Manual testing

• start advertising on peripheral device
• start application and wait for connection complete, line "handle_evt_gap_connected: conn_idx=0000" will be displayed if connected
• application will display all attributes
• if peripheral sends notifications or indications, they will be displayed on console