// ------------------------------------------------
// Controlling HC-SR501 through Particle Cloud
// @author Rahmadi Trimananda - UC Irvine
// ------------------------------------------------
// HC-SR501 Motion Detector
// Basically, this simple code detects motion and send the occurrences to the cloud
// We use the WKP port (port A7) to wake up the device when there is motion
//
// Based on tutorial: http://henrysbench.capnfatz.com/henrys-bench/arduino-sensors-and-input/arduino-hc-sr501-motion-sensor-tutorial/

int64_t machineId;
// Key and data
char keyBuffer[80];
char dataBuffer[80];

// Setting up pins for input
void setup() {

	// Get the MAC address
	byte mac[6];
	WiFi.macAddress(mac);
	// Prepare machine ID
	int64_t mac4 = (int64_t) mac[4];
	int64_t mac5 = (int64_t) mac[5];
	machineId = (mac4 * 256) +  mac5;
}

void loop() {

	// Basically delay to give time to send updates to Particle cloud.
	// If we do less than this then it would fail publishing.
	delay(2000);	
	// Machine ID
	sprintf(keyBuffer, "%04x", machineId);
	// Motion detection
	sprintf(dataBuffer, "%s -> motion-detected", Time.timeStr().c_str());
	Particle.publish(keyBuffer, dataBuffer);
	delay(1000);
	
	// TODO: Profiling
	//String strTime(micros());
	//Particle.publish("Time motion sensor", strTime.c_str());
	//while(true);

	System.sleep(SLEEP_MODE_DEEP, 0);
}