Monitor_1B_Spark

/*
-----------------------------------
Webpage = MonitorSwitch.html
 Monitors the state of switch1. If switch1 is pressed then the value of variable sw1 changes.
 The webpage monitors the state  of sw1 by sending a $.get request.
 If sw1 is 1 then the webpage sends $.post to the core to switch led1 ON.
 If sw1 is 0 then the webpage sends $.post to the core to switch led1 OFF.

Builds on the code for controlling LEDs on the Sparkcore from the Webpage
-----------------------------------
*/

// name the pins
int led1 = D0;
int led2 = D1;
int switch1 = D2;
int sw1 = 0;

// This routine runs only once upon reset
void setup()
{
   //Register our Spark function here
   Spark.function("led", ledControl);
   Spark.function("state", swState);
   Spark.variable("sw1", &sw1, INT);

   // Configure the pins to be outputs
   pinMode(led1, OUTPUT);
   pinMode(led2, OUTPUT);
   pinMode(switch1, INPUT);

   // Initialize both the LEDs to be OFF
   digitalWrite(led1, LOW);
   digitalWrite(led2, LOW);
}


// This routine loops forever
void loop()
{

   if(digitalRead(switch1) == LOW)
   {
       if(sw1 == 1)
       {
        sw1 = 0;
        digitalWrite(led2,LOW);
       }
       else
       {
        sw1 = 1;
        digitalWrite(led2,HIGH);
       }
       while(digitalRead(switch1) == LOW)
        delay(10);
   }
   //else
   //digitalWrite(led2,HIGH);


}



// This function gets called whenever there is a matching API request
// the command string format is l<led number>,<state>
// for example: l1,HIGH or l1,LOW
//              l2,HIGH or l2,LOW
int ledControl(String command)
{
   int state = 0;
   //find out the pin number and convert the ascii to integer
   int pinNumber = command.charAt(1) - '0';
   //Sanity check to see if the pin numbers are within limits
   if (pinNumber < 0 || pinNumber > 1) return -1;

   // find out the state of the led
   if(command.substring(3,7) == "HIGH") state = 1;
   else if(command.substring(3,6) == "LOW") state = 0;
   else return -1;

   // write to the appropriate pin
   digitalWrite(pinNumber, state);
   return 1;
}

// This function gets called whenever there is a matching API request
// the command string format is sw<switch number>,<state>
// for example: sw1,HIGH or sw1,LOW
//              sw2,HIGH or sw2,LOW
int swState(String command)
{
   int state = 0;
   //find out the pin number and convert the ascii to integer
   int pinNumber = command.charAt(2) - '0';
   //Sanity check to see if the pin numbers are within limits
   if (pinNumber < 0 || pinNumber > 1) return -1;

   // find out the state of the led
   if(command.substring(4,8) == "HIGH") sw1 = 1;
   else if(command.substring(4,7) == "LOW") sw1 = 0;
   else return -1;

   return 1;
}