Kinetis Microcontrollers中的主题 Re: Does Freesacle provide a library for fixed point math similar to TI IQMath?

Does Freesacle provide a library for fixed point math similar to TI IQMath?

andreag — Wed, 24 Jul 2013 05:12:46 GMT

if not can someone suggest the easiest/most efficient (execution-wise) way to implement this in Kinetis seires MCU?

Thanks!

Re: Does Freesacle provide a library for fixed point math similar to TI IQMath?

chris_brown — Mon, 12 Aug 2013 19:59:15 GMT

Hi Andrea,

I am not aware of any library that Freescale provides. For standard floating point math, you should just be able to include math.h, declare float variables, and perform the math. That library should be a part of most IDEs. For more complicated functions (like computation of trigonometric functions, matrix math, vector math, filtering functions, etc.,), I suggest trying the ARM CMSIS DSP library.

Hope this helps,

Chris

Re: Does Freesacle provide a library for fixed point math similar to TI IQMath?

eduardo_viramon — Mon, 12 Aug 2013 20:47:26 GMT

The Embedded Software and Motor Control libraries are probably what you're looking for, check them out here:

Embedded Software and Motor Control Libraries Product Summary Page

Re: Does Freesacle provide a library for fixed point math similar to TI IQMath?

andreag — Tue, 13 Aug 2013 15:30:42 GMT

Hi guys,

thanks for the replies!

I amu sing a Kinetis L series (Cortex M0) so using floating point is not an option for any real time work. Also the motor control library is not available for this MCU (only for Cortex M4).

There are a few generic fixed point math libraries, but none seem to have the ease of use of the TI one. For real time control (in my case motor control) it is extremely useful and is probably the part I miss the most from TI...In particular CMSIS library is OK and I will try and use that first, but it does not have much in terms of fixed point math basic functions (conversions, basic operations, etc....)

Thanks for your help!