Is there a way to map the gamepad home button with HIDtoVPAD?

My gamepad just died. I am able to power on the wii u and use a wiimote to control it. I can launch HIDtoVPAD and emulate the gamepad with a PS3 controller but i have no way to exit games like in nintendont without pressing the home button. The PS button on ps3 controller is unused, is there a way to map the gamepad home button to the PS button?

 

Hmm. Are there any homebrews that can do it? Cuz i have no way to get out of nintendont without pulling the cord

 

idk if it is completely dead. The battery pack seems to be bulging out and i need to buy a screwdriver small enough to pop the back off. For a long time it was slightly bulged and would only come on if it was plugged into a powersource, now it is bulging more and doesn't come on at all. Any idea if i could just replace the battery?

 

OK I'm just gonna try to buy a replacement battery pack since so l those are pretty cheap as opposed to trying to buy a gamepad from resellers