That sounds good to me, if we only have to do it once.
Even better if the init routine could store the value in flash. It seems easy to do for STM32 or ESP32, but other MCUs might have to be reflashed with the new zero angle.
Next release of the drivers library will include an abstraction for storing settings:
Its working quite nicely for SAMD21, and I’ll add STM32 and ESP32 flash as well, like you suggest.
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RP2040 too, please 
Yeah, should not be hard to support RP2040 as well…
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