No you can't
.... or maybe
First, I was not sure I can reset the UART speed on the fly, so I stick on setting the speed at start up ... but I think you can easily change UART speed and mode on the fly.
Second ... on FrSky mode there is no feedback mode, at least not by default, if I hack the FrSky, I can have an uplink, but by default it is just a display with only downlink data.
FrSky, display has 3 pages, and shows: signal strength, battery volt, 2 temperatures, rpm, altimeter, XYZ acceleration, RPM, fuel level, and the GPS data (coordinate direction and speed)
For my usage, since I'm not going to bring any PC on the flying field, I like to arm the GluonPilot in FrSky mode or in normal mode buy just a simple cable that can be removed eventually (it can even stay it will not arm if input ch6 is not used) ... in theory it can be implemented to always arm in normal mode, and by a command switch to FrSky mode, but from this point will need a HW reset for change mode. Anyhow .. without a PC, I can't change mode, so ... I stay with my solution.
As well, for have a uplink on FrSky mode (assuming a "hacking" on the FrSky TX module), also the serial input need to be reversed, and I'm not sure this can be done without hardware inverter, if I understand right the 17-10 picture there is no inverter bit in input mode ... but ... I'm a rookie
Anyhow ... as soon as I finish with my coding I can show a little video about the FrSky connection.
Then ... I let you free about how to update the main code stream, at the end the hack is quite isolated.
Tchuss
e_lm_70
ps: The FrSky Telemetry HUB protocol is well documented, and it is what I'm using as reference for feed the downlink from bird to display ... if you want to have a look here is the link:
http://www.frsky-rc.com/uploadfile/2011 ... 301692.pdf