I would like to understand the fatory library

[akust]

Hey!
I have a concrete idea for a delay with special settings and I would like to make this partly in the code (instead of getting for each calculation step a separate module) I just want to add/change some lines in code. But there is a lot of Bit sliding (e.g. _mix<<2) and unknown functions (e.g. ___SMMUL())

I have not found anything on Youtube 'axoloti'. Does anyone have a tip where I can learn this kind of "data shifting" and its functions like ___SMMUL(), or __SSAT()?

[MattilynMattroe]

Hi, have a look at this post, I found it really helpful:

Coding axoloti objects

A pretty big subject, but i think it might be useful to shed some light for newbies: Contents What do you need to know to code objects How do you start coding an object? How do you edit a library object? Coding with input/output (and parameters) Local data Init code K-rate and S-rate cycles Inlets/Outlets Parameters Normal range and number format Elementary math in axoloti 32bit variables Bitshifts Fixed point math Functions Assembly functions Bitwise operations What do you need to know…

[akust]

Thank you very much @MattilynMattroe

[ricard]

Functions like ___SMMUL(), or __SSAT() are part of the CMSIS library, which among other things is a signal processing library optimized for ARM Cortex CPUs. If you search in the Axoloti tree for CMSIS you can find include files which have some documentation, otherwise a Google search for CMSIS will yield useful links.

CMSIS – Arm Developer