I am trying to figure out the keyevents for the bottom two "trigger" buttons on the shield controller. I have been unable to duplicate or discover them using both autoinput and adb commands. From searching around it seems that these are not the usual L2/R2 keys that are normally mapped in Android, but instead LTRIGGER/RTRIGGER from a joystick. Has anyone figured out how to emulate these buttons in autoinput/tasker?
The most you can try is enabling key intercept in the main AutoInput app and then enable system logs and check its logs and see if the keys show up there.