Using: CLRacing 4RS; FrSky R-XSR; Taranis Q X7S

I have the sbus wired to SBUS tab and the smartport wired to the TELE tab on the FC

Betaflight:  If I am reading CL Racing FC literature correctly I need UART 1 for the Serial Rx and UART 3 for Smartport; However UART 1 has the msp checked along with a warning not to mess with it--so what do I do?  Can I use UART 1 for both msp and Serial Rx?

Right now I have the Serial Rx activated on UART 3 and the quad works fine but I don't have telemetry--

Thank you for any guidance!

Can you use UART6 for Softserial?  See Oscar's link below for how to do softserial:
https://oscarliang.com/betaflight-soft-serial/

(18-Nov-2018, 10:24 PM)TMac Wrote: Can you use UART6 for Softserial?  See Oscar's link below for how to do softserial:
https://oscarliang.com/betaflight-soft-serial/

Thank you--guess I'll be learning even more now!  Questions: 

1--If CL Racing states UART 3 is for Smartport why is UART 3 working for Serial Rx?  
2--Can I use UART 1 for Serial Rx along with using it for msp?

You port screen should look like this.  MSP is selected on USB VCP and not UART 1.  UART 1 is the SBUS pad, which is where you should wire your SBUS from R-XSR.  You should wire S.port to the TELE on FC, and select Smartport telemetry for UART3.  You don't need softserial for telemetry.  And you don't need to do non-inverted hack because both the SBUS and TELE already have hardware inverter on this FC.

That's exactly what my screen looks like but receiver does not work when I go into RECEIVER tab--However if I put Serial Rx in UART 3 all works--(I was mistaken about msp being at UART 1 it's where you show it is) In configuration Receiver is set to SBUS--I tried rebooting but nuttin when I go to receiver tab to test--I saved/rebooted and checked--it's all set up like your screen

Are you sure your wiring is correct?

(19-Nov-2018, 12:45 AM)voodoo614 Wrote: Are you sure your wiring is correct?

Yes I am pretty sure--but it makes sense at this point to double check-- if smartport wire and sbus wire were reversed on the FC (TELE pad and SBUS pad respectively) that would explain why the receiver works on UART 3--Hmm or does it?  Anything I can do/ask in CLI to check things?

If you have wires reversed, technically your receiver should not work. Because TELE is a TX and not a RX.

Post photos of wiring and post file if you want to get down to the bottom of things. If you are content with what you have, then happy flying.

(19-Nov-2018, 05:02 AM)voodoo614 Wrote: If you have wires reversed, technically your receiver should not work. Because TELE is a TX and not a RX.

Post photos of wiring and post file if you want to get down to the bottom of things. If you are content with what you have, then happy flying.

I had the wires crossed!  R-XSR pics shows Black red yellow green (in order) coming from the receiver--so because all the other signal wires were yellow on the build I just assumed the same so put them in the same order onto the pads--as it turned out yellow wire was the smartport--swapped them over and it works like you said!  UART 1 is Serial RX and UART 3 is smartport--I have full telemetry now!  Happy camper now!

Thanks for helping me out and I look forward to learning things as a new member of this forum!

So I guess the TELE is bidirectional, that is why the your controls worked. Great to hear you solved your problem.