Writing Methods

Controller methods use the usual Final form TypeName#methodName. The instance is on the O stack (o:).

Handlers for the EventLoop take the event and drop it (or pull fields first):

/*
Handle the pin going low.
( ev:Event -- ) o( inst:LedBtnCtrl )
*/
: LedBtnCtrl#handleGpioLow
  .index@ nip                 // which button (from setOnLow index)
  LedBtnCtrl.idxEnable ==
  o:.blink!
;

Non-handler methods are fine for shared work (#init, #read, and so on). Prefer short methods that do one job; put reusable bits in factor words (next page).

Stack comments matter — keep ( ev:Event -- ) o( inst:YourCtrl ) accurate so help stays useful.

See Objects and methods in the main guide.