AP_Notify: allow split-standard LED pattern on serial LEDs

[andyp1per]

This is a simple little change that allows serial LED strips to easily be used as navigation / orientation lights. Drone registration in Japan appears to be requiring orientation indicators and this is an easy way to comply - either through a single strip or strips mounted on the arms. The change itself splits the LEDs into two banks, the first half shows the normal colours and the second swaps red and green so that when armed you get half red and half green.

[IamPete1]

I think this is really too much of a hack, its going to confuse everyone. Flashing green means I'm good to arm, except if I'm looking from the back in which case its flashing red? If I loose GPS fix then it all goes blue so I can no longer tell orientation at all?

Scripting really is great for such things.

[andyp1per]

I think this is really too much of a hack, its going to confuse everyone. Flashing green means I'm good to arm, except if I'm looking from the back in which case its flashing red? If I loose GPS fix then it all goes blue so I can no longer tell orientation at all?

Scripting really is great for such things.

Scripting is not good in this use case for three reasons:

a) All the copters I need this on (small copters) don't have scripting
b) To implement in scripting you have to re-implement the whole of the notify standard patterns - complicated and laborious
c) It's a pretty standard requirement and becoming more so legally

The confusion thing could be addressed by an armed only flag - so "Show navigation colours on arming".

[IamPete1]

b) To implement in scripting you have to re-implement the whole of the notify standard patterns - complicated and laborious

We have a binding to return the current notify color. LED:get_rgb() So you can mirror notify, or output notify colors on a subsection. I can't find a example vid of that, but this is this is our Hexsoon example script: https://youtu.be/X-kGiXX4AKU?si=OivIGhDyzKOcfvSa&t=1226

Edit: I found the notify demo https://youtu.be/qHUIMvzoF10