listen
wayland/nextion/listen
Listen for nextion touch events and page changes. This node must be updated continuously.
listen
@/listen
Listen for nextion touch events and page changes. This node must be updated continuously.
DEV@/nextion-serial
A nextion device.
UPDpulse
Update.
Donepulse
Pulse after checking for event.
Trigpulse
Pulse on trigger.
TrigIDbyte
Numerical ID of trigger.
C++ implementation
node {
void evaluate(Context ctx) {
// The node responds only if there is an input pulse
if (!isInputDirty<input_UPD>(ctx))
return;
// Get a pointer to the `EasyNex` class instance
auto eznex = getValue<input_DEV>(ctx);
uint8_t triggerID = eznex -> NextionListen();
if (triggerID < 255) {
emitValue<output_TrigID>(ctx, triggerID);
emitValue<output_Trig>(ctx, 1);
}
emitValue<output_Done>(ctx, 1);
}
}