Kinetis Microcontrollers中的主题 Re: Is CRC8 possible for CRC module?

Is CRC8 possible for CRC module?

kenansun — Fri, 13 Jun 2014 10:37:27 GMT

Hi,

I'm trying to use the CRC module on my K60 MCU to generate CRC 8 code. I checked the methods in PEx and I found it not possible. It seems that the poly should be at least 16bit.

I also find a similar question here:

CRC_8 for Kinetis K60?

but no answers yet.

Does anybody know the answer? Please help me!

Many thanks!

Kenan

Re: Is CRC8 possible for CRC module?

Kan_Li — Tue, 17 Jun 2014 01:48:39 GMT

Hi Kenan SUN,

I am sorry, but this module just supports CRC-16/32 . No support for 8 bit calculations.

Sorry for the inconvenience that has caused.

Have a great day!

B.R

Kan

Re: Is CRC8 possible for CRC module?

tim_povall — Thu, 07 May 2020 21:29:24 GMT

8-bit CRC actually is possible with a 16 or 32-bit CRC module.

You can convert the 8-bit polynomial into 16-bit by shifting 8 bits to the left, and then to get a 8-bit result do the same to the resulting 16-bit CRC. Similarly, with 32-bit you would need to shift 24 bits to the left.

See my more detailed answer to a similar question here: S32DS CRC 8 calculation