Push Button Card

Pro Feature

This is an exclusive feature of DASH Pro. Check it out here.

Push button card adds a static button on your dashboard which has no state. Whenever a user clicks this button, it triggers a callback.

Initializer

/* 
  Push Button Card
  Valid Arguments: (ESPDash dashboard, Card Type, const char* name)
*/
Card card1(&dashboard, PUSH_BUTTON_CARD, "Push Button");

Callback

Push button card will trigger a callback on every click by user, there is no need to update or sendUpdates to dashboard because there is no state.

/*
  We provide our attachCallback with a lambda function to handle trigger
*/
card1.attachCallback([&](){
  Serial.println("[Card1] Push Button Triggered");
});

Updater

note

Push button card doesn't require any updater as value is not passed back to dashboard.

Reference

This is a reference sketch showing positions for intializer and callback.

...

/* Push button card initializer */
Card pushbtn(&dashboard, PUSH_BUTTON_CARD, "Push Button");


void setup() {
  ...

  /* Push button card callback */
  pushbtn.attachCallback([&](){
    Serial.println("Push Button Callback Triggered");
  });
}

void loop() {
  ...
}