Pico-Backscatter

An educational project on backscatter using Raspberry Pi Pico

Repo Organization

• hardware contains the hardware design with further description and explanation.
• project_pico_libs contains the libs for all projects using the RPI Pico (carrier/receiver/baseband).
• baseband contains a 2-FSK baseband code using Pico PIO together with a generator script, its description and some exercise questions.
• carrier-CC2500 contains a carrier generator using the Mikroe-1435 (CC2500) on the Pico.
• receiver-CC2500 contains a receiver using the Mikroe-1435 (CC2500) on the Pico.
• carrier-Firefly contains the configuration guidance for home setup with zolertia firefly as carrier.
• carrier-characteristics contains a measurement to estimate the typical carrier bandwidth.
• carrier_receiver-CC1352 contains the configuration guidance for lab setup with CC1352 as carrier and/or receiver.
• carrier-receiver-baseband integrates all components into one setup: the Pico generates the baseband, uses one Mikroe-1435 (CC2500) to generate a carrier and a second Mikroe-1435 (CC2500) to receive the backscattered signal.
• stats contains the system evaluation script.

Installation

A number of pre-requisites are needed to work with this repo: Raspberry Pi Pico SDK, cmake and arm-none-eabi-gcc have to be installed for building and flashing the application code.
Please follow the installation guidance in Getting started with Rasberry Pi Pico.
Using Visual Studio Code is recommended.

Comment

We recommend using the Raspberry Pi Pico SDK over Zephyr and Contiki for this project, since it integrates the required PIO toolchain. An example of using the PIO with Zephyr can be seen in the pull request 44316, which is based on pre-assembling the state-machine with pioasm since the tool is not integrated to Zephyr.