Custom STM32WL Series Generic MCU

[danielheegg]

I have a custom PCB with a STM32WL55CC chip. In the past, when I used PlatformIO with custom boards, I always used the “genericSTM32xxxxxx” option for the board type, but no such option seems to exist for the WL55 series. The closest option I found was ST Nucleo WL55JC. It’s the same core but in a different package, it also only supports the Arduino and Zephyr frameworks - I’d like to have access to the STM32 HAL libraries.

How do I create / modify the board file for the WL55JC in order to work with my MCU under the STM32Cube framework?

[maxgerhardt]

Per

How to use STM32WL55JC under STM32Cube framework

That base package is missing in the PlatformIO registry (basically PIO packaged version of https://github.com/STMicroelectronics/STM32CubeWL), that’s an issue in PlatformIO, similiar to Adding STM32CubeWB package to platformIO registry · Issue #686 · platformio/platform-ststm32 · GitHub but not yet tracked. You could manually add that into platofrm-ststm32 by locally modifying ~/.platformio/platforms/ststm32/platform.json by adding the package to the list of packages so e.g. "framework…