Bluetooth WarDriving with the nRF52
The nRF52 is a very popular Bluetooth chip that has taken over most of the wireless embedded space. The system-on-chip (SoC) houses an ARM Cortex M4 and 2.4Ghz radio to implement various wireless protocols. In this tutorial, I want to walk through setting up a Zephyr RTOS environment and building/flashing some code to do some wardriving.
Wardriving is the act of searching for Wi-Fi wireless networks, usually from a moving vehicle, using a laptop or smartphone.> — Wikipedia
We’re going to do some “Bluetooth wardriving”, and we’re not going to be driving. I’m planning on “forgetting” a battery-powered nRF52 in a public space for a few days and see what sort of Bluetooth data we can collect.
Please keep in mind code prefixed with “$” are bash commands, while code with no prefix is output. To conserve space, I haven’t displayed all output. Start by navigating to the zephyr folder and update. I am assuming you checked out zephyrproject right in your home directory.
You should get an output of all the nrf52dk boards. Most likely, you want nrf52dk_nrf52832. So let’s build some simple firmware for that board.
