replaced look-up tables with <math.h> lib functions and updated press…

[avtoku]

Turbomath update

[avtoku]

Replaced table look-up functions for math lib functions.
Updated pressure altitude calculation.

This update requires changes to sensors.h/cpp from ptt/barocal and ptt/pitotspeed pull requests.

[jsjax]

I'm happy to see this being replaced, even though it's like saying goodbye to an old friend :). The STM32F103 didn't have a floating-point unit, so this was really the only way to get our loop time down under 1ms. I'm curious what the new timings look like with the H7.

[avtoku]

I'm happy to see this being replaced, even though it's like saying goodbye to an old friend :). The STM32F103 didn't have a floating-point unit, so this was really the only way to get our loop time down under 1ms. I'm curious what the new timings look like with the H7.

Yup, sad to see old friends retire. estimator_.run() went from 26us to 16us with the change. We still need to verify that there were no errors in the conversion.

[iandareid]

@avtoku I will put this on a board and do a test flight. I will let you know how it goes!

[avtoku]

@avtoku I will put this on a board and do a test flight. I will let you know how it goes!

Probably run it in the simulator first?

[bsutherland333]

Should we merge this? @iandareid