@ian-rosenberg Don't bump topics for no reason, it's rude.
If you can't figure out how to do things, try to find and example - did you look at the Adafruit's code ?

for me, regardless of whether he was obligated by the license or not, the email reads snarky and hostile:

Not to be a complete ass or anything, but technically the LGPL license REQUIRES you to make the sources available when it’s released.

capital letters, and just sending it in the first place considering the author had not refused to release the source, just not got around to it yet (and given that it came out in june, can't have been long). considering that this is the author, and not a forker, clearly we can give some leeway, especially considering he clearly had rushed to get RPI4 support done quickly.

the intention of the LGPL is not to be used to needle volunteer developers. i just kind imagine this kind of mindset , but we see it ALL the time :(

@mitu my select button in retropie dont work, with recalbox working fine, I believe that for the recalbox to have wiringpi already installed

i need a image of retropie with wiringpi activated...

@scopaust As with other controller that don't have a hotkey, you can use Select instead of a hotkey.

necrobumping my own post because I found a workaround.
I use runcommand-onstart.sh script (docs : https://github.com/RetroPie/RetroPie-Setup/wiki/Runcommand , my script : https://pastebin.com/XunR2bBY) combined with some delay (hard programmed in my fanControl program) to relaunch fanControl after Mupen has done its shenanigans and thus reclaim the GPIO.