Rudder instead of Throttle on M1, when using cppm mode (FrSky)

[GoogleCodeExporter]

What steps will reproduce the problem?

Connect Frsky receiver in cppm-mode to rudder input (input 4). 
Configuration:
RXsync: cppm
Ch.order: same result on both.
Receiver inputs-screen shows the correct stick-movements. 

What is the expected output? What do you see instead?

Throttle signal on M1. Instead I get Rudder on M1 (and also on M8).

What version of the product are you using? On what operating system?
1.0
1.1.1
1.2beta3
1.2beta8

Please provide any additional information below.

This is the first time I tried OpenAero2. Previously I used the kk2-mulitrotor 
firmware on this card. 
My transmitter is a Turnigy 9x with FrSky transmitter module and openTX 
firmware. My receiver is a D8R-II Plus, flashed with the XP 27ms cppm-firmware. 
As I wrote earlier on the receiver input screen, every thing looks alright. The 
throttlestick seems connected to the throttle channel as it should. It might be 
a setting I missed somewhere, but I have tried everything obvious. Channel 
mixing for channel 1 is the default 100% throttle.

Original issue reported on code.google.com by christia...@gmail.com on 7 Jun 2013 at 1:57

[GoogleCodeExporter]

Hi, sorry I only just saw this as I don't get automatic notifications :)
Just to be clear, M1 to M8 do not map to CH1 to CH8.
M1 to M8 are free to be set up to output whatever channel you have selected.

It would only be a problem if you selected THROTTLE for the Source of M1 and it 
actually gave you the RUDDER signal.
Check the sources of the channels to see if they match what you see.

Original comment by thompson...@gmail.com on 12 Dec 2013 at 9:44

[GoogleCodeExporter]

In addition to this problem on the kk mini board the mixing is only ok when 
both gyro and accelerometer inputs are off, when they are on: output 6 and 7 
become the same.

Original comment by billgrif...@gmail.com on 4 Aug 2015 at 10:09

[GoogleCodeExporter]

Re:"the mixing is only ok when both gyro and accelerometer inputs are off, when 
they are on: output 6 and 7 become the same."
This also applies when non serial input is used.

Original comment by billgrif...@gmail.com on 4 Aug 2015 at 10:20

[GoogleCodeExporter]

This happens when you select a channel for the second aileron. The code 
"helpfully" copies the aileron source to ch6/7 of the standard aero mix. You 
can just go into the affected output mixer and switch it off.
Stick control comes via the gyros as well as directly into outputs via the 
mixers. Setting these up suboptimally might lead to the impression that you are 
seeing. Switch "source mix" ON for these two channels and the behaviour will be 
consistent.
Better idea would be to move on the the vastly more evolved OpenAeroVTOL, also 
for KK2. See videos on the OpenAeroVTOL thread on rcgroups. 

Original comment by thompson...@gmail.com on 4 Aug 2015 at 10:46

[GoogleCodeExporter]

Thanks for your reply,
I didn't know about OpenAeroVTOL,
Will try that, 
Thanks again.

Original comment by billgrif...@gmail.com on 4 Aug 2015 at 6:47