Datasheet of the H742/H743/H753/H750:

Config: https://github.com/stm32-rs/stm32-rs/blob/master/peripherals/wwdg/wwdg.yaml

This has been mentioned in an H7 HAL PR comment, but is seems it wasn't fixed: https://github.com/stm32-rs/stm32h7xx-hal/pull/10/files#r294054557

I don't know how this crate works, so if somebody can instruct me with the rough steps, I could do it.