I upgraded pio to the latest (which includes zephyr 2.2 for stm32 support) and an existing project stopped working. It does not appear as if the board overlay is not being processed any longer as I don’t see the dtc output. I have a file in zephyr/boards/blackpill_f103c8.overlay. Did anything change in the pio side that might be causing this?
Can you upload a reproducable project which works under 2.1 but not under 2.2 with the expected output description? @valeros or me could have a look at it.
I’ve done some more digging through the cmake files for zephyr and there may have been some board name changes. My platformio.ini uses “board = blackpill_f103c8” as before but zephyr is using the board “stm32_min_dev_black”. This means I needed to change the name of my zephyr/boards/*.overlay file. I haven’t looked at the previous version to see if there was a compatibility name or some other shim to get it to work previously.