publish-and-sleep.cpp

#include "application.h"

SYSTEM_MODE(SEMI_AUTOMATIC);

// ALL_LEVEL, TRACE_LEVEL, DEBUG_LEVEL, INFO_LEVEL, WARN_LEVEL, ERROR_LEVEL, PANIC_LEVEL, NO_LOG_LEVEL
Serial1DebugOutput debugOutput(9600, ALL_LEVEL);

unsigned long whenPublished = 0;
retained int publishCount = 0;

int resetPublishCount(String _) {
	return publishCount = 0;
}

void setup() {
	pinMode(D1, INPUT_PULLDOWN);
	pinMode(D7, OUTPUT);
	Particle.variable("c", publishCount);
	Particle.function("r", resetPublishCount);
}

void blink() {
	DEBUG("");
	for (int i = 0; i < 4; ++i) {
		digitalWrite(D7, HIGH);
		delay(100);
		digitalWrite(D7, LOW);
		delay(100);
	}
}

void publishOnce() {
	if (0 == whenPublished) {
		Particle.connect();
		DEBUG("Particle.connect");
		waitUntil(Particle.connected);
		DEBUG("Particle.connected");
		bool sent = Particle.publish("b", String(publishCount + 1));
		if (sent) {
			DEBUG("publish sent");
			++publishCount;
			whenPublished = millis();
		} else {
			DEBUG("publish not sent");
			// blink D7 to indicate publish failed
			blink();
		}
	}
}

void sleepAfterDelay() {
	// allow time for retransmission of the published message
	if (0 != whenPublished && millis() - whenPublished > 5000) {
		DEBUG("Going to sleep");
		delay(1000);
		System.sleep(D1, RISING, 60*60); // Halt processor here for 1 hour
		delay(1000);
		DEBUG("waking up!");
		whenPublished = 0; // publish again when we wake up
	}
}

void loop() {
	publishOnce();
	sleepAfterDelay();
}