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Getting started with the examples

Building

Build the examples just like you built pc-ble-driver.

We will use heart_rate_monitor as the concrete example to follow along with, but building and running hear_rate_collector is exactly the same.

$ cd pc-ble-driver/examples/heart_rate_monitor/
$ mkdir build/
$ cd build/

Note: this step depends on your operating system as documented here.

$ cmake .. -G "Unix Makefiles"
$ make

If everything went well, you should see:

$ ls pc-ble-driver/examples/heart_rate_monitor/build/
> hrm_v2 hrm_v5 ...

Where hrm_v2 and hrm_v5 are the executables you will run.

Running

Plug your nRF5 DK into you're PC and Flash the connectivity firmware.

Note: the examples communicate with a baud rate of 115200 by default, so make sure you flash your nRF5 device with sd_api_v<x>/connectivity_<ver>_115k2_with_s13<v>_<a>.<b>.<c>.hex where 115k2 corresponds to the baud rate of 115200.

If you are on OS X 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:

$ ./hrm_v<x> /dev/tty.usbmodem<xxxx>

Evaluating

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: 115200. 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 flashing 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.