Common: CADDXFPV gimbal setup

[rmackay9]

This is slightly premature considering we don't have the driver completely working yet but I would like to know if @Hwurzburg thinks the wiring is correct or do I have the RX and TX lines backwards?

[Hwurzburg]

I think that they are backwards, but I could be wrong...I only tried one way(duh)...I can rewire and try the other way today...

[rmackay9]

@Hwurzburg, or make use of the SERIALx_OPTIONS to flip them in software. I'll continue working on this today as well so surely we will get to the bottom of it

[rmackay9]

@Hwurzburg,

I think the diagram included in this PR has the TX and RX mapped correctly. I've asked CADDX so hopefully they will tell us directly but we have this picture in the manual.

Then when it discusses the MAVLink interface (which we're not using but surely the pin mapping is the same) it says UART_RX and UART_TX should be mapped to the autopilot's TX and RX respectively.

[Hwurzburg]

I just used the pin marked RX on the gimbal to the autopilot TX since its one way for control....so I had that correct, but still no communication

[rmackay9]

Hi @Hwurzburg,

How do you feel about merging this? I'd like to get it into the wiki even though 4.7 is not out because it gives alpha/beta testers the info they need to test and use it.

[Hwurzburg]

I will add to upcoming....getting beta testers will be more effective with a BLOG post referring to this....however,I can rework this to add it in the wiki for display and you then it will appear nice to those following the link, but not be confused as if it were in stable

[Hwurzburg]

fixed up and corrected a build error (CI does not catch TOC errors)....merging....you can refer to the wiki HTML page in your blog post once it builds

[rmackay9]

@Hwurzburg thanks so much!