Can filter 16-bit identifier masking configuration error description in the STM32 manual

Source: Internet
Author: User

In the Stm32 can filter configuration, the document indicates that the 2-bit 16-bit filter-identifier masking mode is configured as

But in actual use, this mode of configuration of the register simply can not achieve the desired filtering purposes, I have been tested to determine that the St's document should be wrong, the correct configuration is as follows

I don't know if there's a correction in the errata, I don't see errata.

Can filter 16-bit identifier masking configuration error description in the STM32 manual

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