/*
 * This is the Second Digital Output sketch for Uno
 * It lets you control the turn a digial output on and off from your Android mobile using pfodApp
 * It is modification of the standard BLINK example
 * 
 *(c)2013 Forward Computing and Control Pty. Ltd. 
 * This code may be freely used for both private and commerical use.
 * Provide this copyright is maintained.
 */

#include <EEPROM.h>
#include <pfodParser.h> // include the library
pfodParser parser;  // create the cmd parser

// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;

// the setup routine runs once when you press reset:
void setup() {                
  Serial.begin(9600);
  for (int i=3; i>0; i--) {
    // wait a few secs to see if we are being programmed
    delay(1000);
  }
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);     
}

// the loop routine runs over and over again forever:
void loop() {
  byte in = 0;
  byte cmd = 0;
  if (Serial.available()) {
    in = Serial.read(); // read the next char
    cmd = parser.parse(in); // pass it to the parser returns non-zero when a command is fully parsed
    if (cmd != 0) { // have parsed a complete msg { to }
      if ('.' == cmd) {  
        // pfodApp sent {.} it is asking for the main menu
       // the complete messages is  {.Turn Led On or Off||o~Turn Led ... }
        Serial.print(F("{.Turn Led On or Off|o~Turn Led "));
        // here insert the appropiate word ON or OFF
        if (digitalRead(led) == LOW) {
          // next click will turn it on
          Serial.print(F("ON"));
        } else {
          // next click will turn it off
          Serial.print(F("OFF"));
        }
        // finally close the message with }
        Serial.print(F("}"));  
      } else if ('o' == cmd) { 
        // pfodApp sent {o} i.e. user clicked on On/Off menu item
        // note o was the cmd associated with the Toggle Led menu item above
        if (digitalRead(led) == LOW) {
          digitalWrite(led,HIGH); // was off turn on
          // now update the menu with the menu text
          Serial.print(F("{:|o~Turn Led OFF}"));
        } else {
          digitalWrite(led,LOW); // was on turn off
          // now update the menu with the menu text
          Serial.print(F("{:|o~Turn Led ON}"));
        }
        
       // you can add more command handlers here match the cmd to the menu cmd above        
      } else {
        // don't recongnize this command just ignore and return empty response;
        Serial.print(F("{}")); // otherwise pfodApp times out and disconnects
      }
    }
    cmd = 0; // have processed this cmd now
    // so clear it and wait for next one
  } // else no serial chars just loop
}