Deep sleep
Before deep sleeping, you will want to ensure that all messages are sent, including property values of your HomieNode
and the $online → false
. To do that, you can call Homie.prepareToSleep()
. But the event MQTT_READY
is emitted before your HomieNode
s loop()
method is called. Therefore you need to postpone the call to Homie.prepareToSleep()
until the loop()
method of all HomieNode
s is called and their properties are submitted over MQTT. For that the additional Timer is necessary. Then Homie.prepareToSleep()
will disconnect everything cleanly, so that you can call Homie.doDeepSleep()
.
#include <Homie.h> #include "Timer.h" Timer t; void prepareSleep() { Homie.prepareToSleep(); } void onHomieEvent(const HomieEvent& event) { switch(event.type) { case HomieEventType::MQTT_READY: Homie.getLogger() << "MQTT connected, preparing for deep sleep after 100ms..." << endl; t.after(100, prepareSleep); break; case HomieEventType::READY_TO_SLEEP: Homie.getLogger() << "Ready to sleep" << endl; Homie.doDeepSleep(); break; } } void setup() { Serial.begin(115200); Serial << endl << endl; Homie.onEvent(onHomieEvent); Homie.setup(); } void loop() { Homie.loop(); t.update(); }