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FrankBoesing / FastCRC

Fast CRC library for PC and ARDUINO
MIT License
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Any way of doing multiple simultaneous calculations on Kinetis/Teensy? #28

Closed noisymime closed 2 years ago

noisymime commented 2 years ago

Firstly a huge thank you for the library! I've been using it for some time now and it works really well on both Teensy and AVR based boards.

I've come across a scenario where I need to have multiple CRC calculations happening in parallel as they each await data to come in over serial. I can create 2 instances of FastCRC32 and continually call crc32_upd() which works fine on AVR, but on Teensy boards it will fail due to it trying to use the same hardware for both calculations.

As far as I can see there is no way of forcing software calculation on Teensy boards due to the whole sw file being wrapped in a #if !defined(KINETISK) check?

I understand this is a fairly niche requirement, but I thought I'd check if there's anything I'm missing that might allow this to work. Thanks again for all your work on this!

FrankBoesing commented 2 years ago

Indeed this is an issue.

FrankBoesing commented 2 years ago

I thought about this  -  I won't fix that and do not work on Teensy issues anymore.

Sorry :)