This project walks you through the process of scanning Bluetooth advertising signals from a HibouAir sensor, retrieving CO2 data, and responding to these readings with visual cues through LED indicators on the Renesas board. Blue LED for ‘good’ (1000ppm).
The board will also print the CO2 values, as they change, on the RTTViewer.

Requirements
EK-RA4M2
BleuIO – Bluetooth Low Energy USB Dongle
FSP Platform Installer (Includes e² studio IDE, toolchain, and FSP packs)
J-Link RTT Viewer
USB OTG Cable (USB-A, USB-B micro)
HibouAir air quality monitor with CO2.
Our example project [Download from GitHub]

Details of the project available at
https://www.bleuio.com/blog/real-time-co2-status-indicator-and-monitor-with-bleuio-and-renesas-ek-ra4m2/