Zephyr RTOS vs. FreeRTOS

[Tim Adu]

Hi Nordic Support,

I am currently developing an IoT application (battery powered, cellular device with a few sensors connected). I have spent the past year building the application using FreeRTOS. I've used FreeRTOS for years, and it's more than adequate for the application I'm developing.

I have been asked to look into using Zephyr RTOS. It definitely is promising, but I have my doubts as to maturity, and the fact that it would be overkill for our project.

What is your opinion about Zephyr in terms of 

1. Maturity

2. Stability

3 Footprint

Any constructive critique would be really appreciated. Thanks

Tim

[awneil]

The nRF Connect SDK is based on Zephyr - so I guess Nordic must think it's suitably mature & stable, with an acceptable footprint ... ?

https://www.nordicsemi.com/Software-and-tools/Software/nRF-Connect-SDK