CRC 8-bits on STMF4xx

[suppakit]

Posted on February 04, 2014 at 12:45

Hi,

I want to calculate CRC with hardware CRC but polynomial on the register is work on 32 bits.

Can possible to calculate CRC 8-bits with hardware in the MCU? And how?

Or I have to use sw crc.

Thank everyone.

[waclawek.jan]

Posted on February 04, 2014 at 12:57

> Can possible to calculate CRC 8-bits with hardware in the MCU?

No.

> Or I have to use sw crc.

Yes.

JW

[Tesla DeLorean]

Posted on February 04, 2014 at 13:37

The newer F3 and F072 parts support a programmable CRC peripheral, the F4 has a fixed width, polynomial, direction, reset, and bit/endian setting and is significantly less applicable to other applications.

If I knew the polynomial you're looking at and some data test patterns, I could probably help you with that.

[suppakit]

Posted on February 05, 2014 at 04:28

Thank, waclawek.jan and clive1

I have to use vary polynomial. This function will be common modules of project

I might use software crc.