Download SEGGER Embedded Studio here
Download the nRF5 SDK here
Clone this repo into the folder ${NRF_SDK_DIR}/projects/wearable/, where NRF_SDK_DIR is the nRF5 SDK folder.
Pressing the button indicated by ASSIST_REQ_KEY_EVENT will initiaite the assistance request process. The program will write true to the assistance request characteristic and attempt to connect to a server with the name indicated by SERVER_PERIPH_NAME. Once connected, the server should fetch the value of the assistance request characteristic and write back false to acknowledge receipt. Once this has happened, the device will disconnect from the server.
The server software can be found here: https://github.com/WearableAssistanceDevice/assistance-request-server