Important: Before you run this example, make sure to program a SoftDevice.
The Heart Rate Application with FreeRTOS is a firmware example that shows the cooperation between FreeRTOS and the SoftDevice.
You can find the source code and the project file of the example in the following folder: <InstallFolder>\examples\ble_peripheral\ble_app_hrs_freertos
See Heart Rate Application for a detailed description of the example scenario.