One key point when evaluating technology, especially OSS, is the community. Recently we had a problem with USB on the STM32H743. Several of us attempted to debug it. I posted progress on Discord and one of the ST engineers suggested I open an issue:
By the next morning, someone had replied with a suggestion that solved our problem. The interesting thing is that it was a developer from Nordic Semiconductor who suggested the fix.
Recently on Discord, a RFC was posted for a new Wakeup pin mechanism:
Responses to questions in the Zephyr community are sometimes delayed, but overall it seems this project is doing something right and people care a lot. When you look at the problem Zephyr is trying to solve (Linux quality software for MCUs), you soon realize this is a big problem – much bigger than there is manpower to solve it (at least at any one company). MCU vendors who embrace Zephyr will give a lot away, but in the end, be positioned with a much better SW ecosystem for their parts.
