ChibiOS Free Embedded RTOS

Hi,

does anyone know if there is any support planned for the crc coprocessor found on some of the STMs? There is a community implementaton but it doesn't seem to be currently maintained. A builtin crc check for the SPI or UART driver would be useful too.

Thanks!
Regards
Julian

Hi,

There are no immediate eplans, you best option is to polish the contributed one, it is not very complex.

Giovanni

I considered the CRC peripheral, and concluded that (in my world, at least) it would mostly be useful as a peripheral 100% dedicated to a specific purpose, probably involving CRC Calculation on large blocks of data. Or maybe where there is a need to compute different types of CRC at various times. To make it generic and thread-safe involves some overhead, and can actually increase execution times if used by multiple threads.
For byte-level and small blocks of data, there are table-orientated calculation routines which are reasonably efficient, and have the advantage of being reentrant.