Project files for heart_rate_monitor and heart_rate_collector examples are created and built together with pc-ble-driver by default. It is also possible to (re)build only the examples.
If there is no Makefile in build/examples, follow Compiling pc-ble-driver from source in README.md to create it.
From project root $ cd build/examples/ $ make
If everything went well, you should see:
$ ls
> heart_rate_monitor_v2 heart_rate_monitor_v3 ...
Where heart_rate_monitor_v2 and heart_rate_monitor_v3 etc are the executables you will run.
Plug your nRF5 DK into your PC and Program the connectivity firmware.
Note: the examples communicate with a baud rate of 1M by default, so make sure you program your nRF5 device with hex/sd_api_v<x>/connectivity_<ver>_1m_with_s<v>_<a>.<b>.<c>.hex where 1m corresponds to the baud rate of 1M.
If you are on macOS or a recent version of Linux there is a known J-Link issue that you need to do a workaround for.
Now find out which serial port your device is on:
$ ls /dev/{tty,cu}.* // On Windows simply check the "Ports (COM & LPT)" section in the Device Manager.
> /dev/tty.usbmodem<xxxx>
And run the example:
$ ./heart_rate_monitor_v<x> /dev/tty.usbmodem<xxxx>
When running the heart_rate_monitor example you should see:
> Serial port used: /dev/tty.usbmodem<xxxx>
> Warning: Successfully opened /dev/tty.usbmodem<xxxx>. Baud rate: 1M. Flow control: none. Parity: none.
> Status: 6, message: Target Reset performed
> Status: 7, message: Connection active
> Services initiated
> Characteristics initiated
> Advertising data set
> Started advertising
The nRF5 device is advertising as a BLE peripheral. You can scan for it and connect to it using nRF Connect desktop or mobile.
After connecting to the nRF5 device from nRF Connect, you should see:
> Connected, connection handle 0x0000
From here you can play around more and experiment with pc-ble-driver.
When running the heart_rate_collector example, the nRF5 device is scanning as a BLE Master. You can experiment with this example more by programming a separate nRF5 DK with the BLE Peripheral heart rate monitor example in the nRF5 SDK nRF5_SDK_ROOT_PATH/examples/ble_peripheral/ble_app_hrs so the two devices can interact.