Updated LSM303 code

LSM303.cpp

#include "application.h"
#include "LSM303.h"

#define FEED_ID "xxxxxxxxxxxx" //note: fake id here..
#define XIVELY_API_KEY "Cxxxxxxxxxxxxxxxxxxxxxxx" //note: fake key here

TCPClient client;

LSM303 compass;

char report[100];
char doortemp[100];
char resultstr[120];
bool error;
int LEDpin = D7;
int doorstate = 0;
int laststate = 0;
int doorcount = 0;
int trigger = 0;
unsigned long LastUpTime = 0;

unsigned long LED_timer = 0;
bool LED_trigger = false;

enum xvar {COUNT, TEMP, MAGX, MAGY, MAGZ};

void xively(xvar type, int var);
void ledStatus(int x, int t);


void setup()
{
	Serial.begin(9600);
	Wire.begin();
	error = compass.init();	 // Returns "true" if device found
	compass.enableDefault();
	compass.writeReg(LSM303::CTRL5, 0xE4); //to enable temperature sensor
	compass.writeReg(LSM303::CTRL2, 0x00); //to use 2g Acc scale
	pinMode(LEDpin, OUTPUT);
	Spark.variable("doorcount" , &doorcount, INT);
	Spark.variable("doorstate" , &doorstate, INT);
	Spark.variable("laststate" , &laststate, INT);
	Spark.variable("report", &report, STRING);
	Spark.variable("doortemp", &doortemp, STRING);
	Spark.variable("result", &resultstr, STRING);
}

void loop()
{
	compass.read();
	byte tl = compass.readReg(LSM303::TEMP_OUT_L);
	byte th = compass.readReg(LSM303::TEMP_OUT_H);
	int temperature_raw = (int16_t)(th << 8 | tl);
	int temperature = ((float)temperature_raw / 8) + 20;

	int Mx = compass.m.x;
	Serial.print("Mx: ");
	Serial.print(Mx, 1);

	int My = compass.m.y;
	Serial.print("My: ");
	Serial.print(My, 1);

	int Mz = compass.m.z;
	Serial.print("Mz: ");
	Serial.print(Mz, 1);
	
	const int xU = 3000;        // Upper boundary - Set as required
	const int xL = 2000;        // Lower boundary


	if ((Mx > xU) || (Mx <= xL)) {
		LED_trigger = true;
	}
	
	if (Mx > xU) {
		trigger = HIGH;
	}
	if (Mx <= xL) {
		trigger = LOW;
	}
	// read the door input pin:
	doorstate = trigger;

	// compare the buttonState to its previous state
	if (doorstate != laststate) {
		// if the state has changed, increment the counter
		if (doorstate == HIGH) {
			// if the current state is HIGH then the button
			// went from off to on:
			doorcount++;
			Serial.println("open");
			Serial.print("number of door opens: ");
			Serial.println(doorcount);
		} 
		else {
			// if the current state is LOW then the button
			// went from on to off:
			Serial.println("closed"); 
		}
	}
	// save the current state as the last state, 
	//for next time through the loop
	laststate = doorstate;

	if ((millis()-LastUpTime) > 2000){
		// digitalWrite(LEDpin, HIGH);
		// Spark.publish("AccMag", String(report));
		// Spark.publish("Mx", String(Mx));
		
		xively(COUNT, doorcount);
		xively(TEMP, temperature);
		xively(MAGX, Mx);
		xively(MAGY, My);
		xively(MAGZ, Mz);
		
		LastUpTime = millis();
	}

	if (LED_trigger) {				// Check for LED trigger condition
		LED_trigger = false;		// Reset trigger for next event, set LED_timer to non-zero value
		LED_timer = millis();
		digitalWrite(LEDpin, HIGH); // Turn on the LED
	}

	// LED timer will only be checked if LED_timer is non-zero
	if ((LED_timer != 0) && ((millis()-LED_timer) > 10000)){	// Wait for 10sec LED timer
		digitalWrite(LEDpin, LOW);	// Turn off the LED
		LED_timer = 0;				// Set LED_timer to zero to stop time check
	}

}

void xively(xvar type, int var) {
	int stat;
	
	//Serial.println("Connecting to server...");
	if (client.connect("api.xively.com", 8081)) 
	{
		// Connection succesful, update datastreams
		client.print("{");
		client.print("  \"method\" : \"put\",");
		client.print("  \"resource\" : \"/feeds/");
		client.print(FEED_ID);
		client.print("\",");
		client.print("  \"params\" : {},");
		client.print("  \"headers\" : {\"X-ApiKey\":\"");
		client.print(XIVELY_API_KEY);
		client.print("\"},");
		client.print("  \"body\" :");
		client.print("    {");
		client.print("      \"version\" : \"1.0.0\",");
		client.print("      \"datastreams\" : [");
		client.print("        {");
		
		switch (type) {
			case COUNT:
				client.print(" \"id\" : \"countingsheep\",");
				stat = 1;
				break;
			case TEMP:
				client.print(" \"id\" : \"roomtemp2\",");
				stat = 2;
				break;
			case MAGX:
				client.print(" \"id\" : \"magx\",");
				stat = 3;
				break;
			case MAGY:
				client.print(" \"id\" : \"magy\",");
				stat = 4;
			case MAGZ:
				client.print(" \"id\" : \"magz\",");
				stat = 5;
				break;
			default:
				break;
		}

		client.print(" \"current_value\" : \"");
		client.print(var);
		client.print("\"");
		client.print(" }");
		client.print(" ]");
		client.print(" },");
		client.print(" \"token\" : \"0x123abc\"");
		client.print("}");
		client.println();

		ledStatus(stat, 50); 

	} 
	else 
	{
		// Connection failed
		Serial.println("connection failed");
		// ledStatus(3, 2000);// 
	}

	if (client.available()) 
	{
		// Read response
		//char c = client.read();
		//Serial.print(c);
	}

	if (!client.connected()) 
	{
		//Serial.println();
		//Serial.println("disconnecting.");
		client.stop();
	}

	client.flush();
	client.stop();
}

void ledStatus(int x, int t)
{
	for (int j = 0; j <= x-1; j++)
	{
		digitalWrite(LEDpin, HIGH);
		delay(t);
		digitalWrite(LEDpin, LOW);
		delay(t); 
	}
}