Confused about swapping A/B buttons on EmulationStation

Chuck_B

@riverstorm why to map A=B and B=A?
The "swapped option" purpose is to avoid that. Am I right?

Riverstorm

@Chuck_B - Sorry if the example made it more confusing. I was trying to illustrate that you need to be aware when the option is set to "swapped" when initializing input devices due to A and B being swapped immediately. If you forget that you set that option it could get confusing, when configuring controllers and the A/B buttons don't align with what you pressed. Say you decide to manually swap A/B and that flag is set. I just keep that setting in the back of my mind when troubleshooting input. Disregard the example.

Basically it's about as straight forward as you can get. Set the option in RetroPie setup to "swapped", reboot your Pi, reconfigure your input devices from ES and viola it should work if all went well.

Chuck_B

@Riverstorm I just tried. Set "swapped", performed reboot and reconfigurated my controller making A=A, B=B etc.

Still need to press A to select and B to cancel

Riverstorm

@chuck_b said in Confused about swapping A/B buttons on EmulationStation:

8bitdo SN30pro controller

@Chuck_B - I am not sure what to try at this point. I've only used 360 controllers but I've never had an issue, with any version of RP. It's just works using the few steps listed above.

You could manually swap them in the file below or at least see what the current values are for a and b <input name="b" type="button" id="1" value="1"/> and <input name="a" type="button" id="0" value="1"/> in the file /opt/retropie/configs/all/emulationstation/es_input.cfg looking for your controller in the relevant section.

Doing that way though you would have to manually swap all new input devices only once but if you add new input devices frequently it adds extra steps.

Chuck_B

Maybe I misenderstood the swapped option purpose.
Should it reverse the A/B buttons of the virtual controls of EmulationStation?

Riverstorm

@chuck_b said in Confused about swapping A/B buttons on EmulationStation:

Maybe I misenderstood the swapped option purpose.
Should it reverse the A/B buttons of the virtual controls of EmulationStation?

Yes, that's it exactly. Basically you configure your controller after setting the option. Then A/B are correctly positioned for say NES or SNES games but Emulationstation has A/B swapped so you may 'select' with the "south" button and go 'back' with the "east".

Your ES controls are separate from your emulator controls.

wcndave

@riverstorm I've been trying the same thing. I actually want A/B to be east, in both emulation station and games, however in games it always reverses that A is south and B is east.

The swap config makes it do the same in ES, so it's consistent, however I want it to be A = east everywhere. In the controller set up, this is what I set, and in ES, that is what it does, however not in games... Do I have to edit config files and set up per emulator? I thought this is what retroarch was doing for you?

Riverstorm

@riverstorm Do I have to edit config files and set up per emulator? I thought this is what retroarch was doing for you?

You might need to do some tweaking it depends on the emulator. You're correct though that's what RA is for but there's so many scenarios they don't always hit the mark with all things perfectly.

Chuck_B

@riverstorm Auto Configuration should by Disabled or Enabled?

Riverstorm

@chuck_b said in Confused about swapping A/B buttons on EmulationStation:

@riverstorm Auto Configuration should by Disabled or Enabled?

I leave auto configuration enabled for typical use but you might have a reason or an advanced configuration that requires it to be disabled.

wcndave

@riverstorm It's the wrong way round in every emulator. I just learned to live with it so far, and play nintendo style, instead of sega style ;-)