martin_cork

/*

ROTARY ENCODER:
On the side of the rotary encoder with 3 legs, theres
a green and a black mark;
!!! 2 AND 3 are special Pins !!!
Green Mark <---> Arduino Digital Pin 2
Black Mark <---> Arduino Digital Pin 3
middle     <---> Arduino Ground

RFID CARD:
Needs to be powered off the Arduino
RFID ENABLE <---> Arduino Digital Pin 10
RFID SOUT <---> Arduino Digital Pin 11

SERVO
Need to be powered externally
Run a ground between the Arduino and the ground for the servo

PRINTER
GREEN WIRE <----> Arduino Digital Pin 5
YELLOW WIRE <----> Arduino Digital Pin 6

*/

#include <SoftwareSerial.h>
#include <Servo.h>



//PRINTER
#include "SoftwareSerial.h"
#include "Adafruit_Thermal.h"
//add the irish times QR Code
#include "story1sml.h"
#include "story2.h"
#include "story4.h"
#include "story5.h"
#include "story6.h"

#include <avr/pgmspace.h>
int printer_RX_Pin = 5;  // This is the green wire
int printer_TX_Pin = 6;  // This is the yellow wire
Adafruit_Thermal printer(printer_RX_Pin, printer_TX_Pin);

//Parallax RFID Reader
//can be set to either 2 or 4
#define RFIDEnablePin 10 //Pin that enables reading. Set as OUTPUT and LOW to read an RFID tag
#define RFIDSerialRate 2400 //Parallax RFID Reader Serial Port Speed

//Using SoftwareSerial Library to locate the serial pins off the default set
//This allows the Arduino to be updated via USB with no conflict
#define RxPin 11 //Pin to read data from Reader
#define TxPin 10 //Pin to write data to the Reader NOTE: The reader doesn't get written to, don't connect this line.
SoftwareSerial RFIDReader(RxPin,TxPin);

String RFIDTAG=""; //Holds the RFID Code read from a tag
String DisplayTAG = ""; //Holds the last displayed RFID Tag

int firstSensor = 0;
int secondSensor = 0;
int thirdSensor = 0;
int trackNum;
int inByte = 0;

char val;

int encoderPin1 = 2;
int encoderPin2 = 3;

volatile int lastEncoded = 0;
volatile long encoderValue = 0;

long lastencoderValue = 0;

int lastMSB = 0;
int lastLSB = 0;

//servo motors
//attached to 8 & 9
//slotServo is for the slot, gateServo is to hold the card
Servo gateServo, slotServo, handleServo;
int slotServoPos = 0;

//SLOT LIGHT
int slotLight = 18;

//Printer text
//strings should be short
String story1 = "Feel free to visit neighbours, but don't be surprised if they don't trust you!";
String story2 = "Watch out for evil neighbours hoping to steal your butter.";
String story3 = "Story 3";
String story4 = "Maybe superstitions didn't really exist at all?";
String story5 = "Stealing butter was evil, but who would do such a thing?";
String story6 = "But why did people believe in superstitions?";
String currentStory;

/*
String story1_pt2 = "keep churning";
String story2_pt2 = "keep churning";
String story4_pt2 = "keep churning";
String story5_pt2 = "keep churning";
String story6_pt2 = "keep churning";
String currentStory_pt2;
*/

String story1_link = "http://goo.gl/q0tqE9";
String story2_link = "http://goo.gl/ChbeOq";
String story4_link = "http://goo.gl/5eT1Wz";
String story5_link = "http://goo.gl/PPNj57";
String story6_link = "http://goo.gl/pdGA7u";
String pdf_link;
//Printer QR Code
String currentQR;

int LED_13 = 13;
void setup()
{
  //
  // RFID CARD READER CODE
  //
  // RFID reader SOUT pin connected to Serial RX pin at 2400bps
  RFIDReader.begin(RFIDSerialRate);

  // Set Enable pin as OUTPUT to connect it to the RFID /ENABLE pin
  pinMode(RFIDEnablePin,OUTPUT);

  // Activate the RFID reader
  // Setting the RFIDEnablePin HIGH will deactivate the reader
  // which could be usefull if you wanted to save battery life for
  // example.
  digitalWrite(RFIDEnablePin, LOW);

  Serial.begin(9600);           // set up Serial library at 9600 bps

  Serial.println("Hello world --!");  // prints hello with ending line break

  ///-------------------------------\\\\\

  //
  //  ROTARY ENCODER CODE
  //
  pinMode(encoderPin1, INPUT);
  pinMode(encoderPin2, INPUT);

  digitalWrite(encoderPin1, HIGH); //turn pullup resistor on
  digitalWrite(encoderPin2, HIGH); //turn pullup resistor on

  //call updateEncoder() when any high/low changed seen
  //on interrupt 0 (pin 2), or interrupt 1 (pin 3)
  attachInterrupt(0, updateEncoder, CHANGE);
  attachInterrupt(1, updateEncoder, CHANGE);

  //SERVO CODE
  handleServo.attach(7);
  gateServo.attach(8);
  slotServo.attach(9);
  gateServo.write(0);//bottom servo, 0 == closed, 90 == open
  slotServo.write(60);//top servo, 0 == closed, 60 == open
  handleServo.write(90);
  pinMode(12, OUTPUT);

  pinMode(LED_13, OUTPUT);
  //SLOT LIGHT
  pinMode(slotLight, OUTPUT);

  //establish contact with Processing
  establishContact();
}

void loop()
{
  if(RFIDReader.available() > 0) // If data available from reader
  {
    gateServo.detach();
    slotServo.detach();
    handleServo.detach();
    ReadSerial(RFIDTAG);  //Read the tag number from the reader. Should return a 10 digit serial number
    digitalWrite(RFIDEnablePin, HIGH);
    //attatch servo and ease it close slot
    slotServo.attach(9);
    for(slotServoPos = 60; slotServoPos >= 0; slotServoPos -= 1){
      //slotServo.write(0);
      slotServo.write(slotServoPos);
      delay(20);
    }
    thirdSensor = 1;
    delay(2000);
    slotServo.detach();
    //digitalWrite(RFIDEnablePin, LOW);
  }

  //This only displays a tag once, unless another tag is scanned
  if(DisplayTAG!=RFIDTAG)
  {
    gateServo.detach();
    slotServo.detach();
    DisplayTAG=RFIDTAG;

    //Serial.println(RFIDTAG);
  }

  if(RFIDTAG == "0415ED29AC"){
    trackNum = 1;
    currentStory = story1;
    //currentStory_pt2 = story1_pt2;
    pdf_link = story1_link;
  }
  if(RFIDTAG == "0415ED33DF"){
    trackNum = 2;
    currentStory = story2;
    //currentStory_pt2 = story2_pt2;
    pdf_link = story2_link;
  }
  if(RFIDTAG == "0415ED41D2"){
    trackNum = 3;
    currentStory = story3;
  }
  if(RFIDTAG == "0415ED4C69"){
    trackNum = 4;
    currentStory = story4;
    //currentStory_pt2 = story4_pt2;
    pdf_link = story4_link;
  }
  if(RFIDTAG == "0415ED50A4"){
    trackNum = 5;
    currentStory = story5;
    //currentStory_pt2 = story5_pt2;
    pdf_link = story5_link;
  }
  if(RFIDTAG == "0415ED4C54"){
    trackNum = 6;
    currentStory = story6;
    //currentStory_pt2 = story6_pt2;
    pdf_link = story6_link;
  }
  firstSensor = trackNum;
  Serial.write(firstSensor);
  Serial.write(encoderValue);
  Serial.write(thirdSensor);
  //secondSensor ++;

  if(Serial.available()){
    val = Serial.read();

    if(val == '0'){  //--if someone churned their way to the end of the track, eject and print--\\
      //someone has listened to the full track
      //so eject the token
      digitalWrite(12, HIGH);

      //TURN THE RFID READER OFF
      digitalWrite(RFIDEnablePin, HIGH);
      gateServo.attach(8);
      slotServo.attach(9);
      gateServo.write(90);  //open servo
      //slotServo.write(60);
      handleServo.attach(7);
      handleServo.write(90);

      //slot is open, so don't play any track
      thirdSensor = 0;
      delay(3000);       // wait 3 seconds
      gateServo.write(0);   //close servo
      slotServo.write(60);
      delay(2000);
      //set murmur track to play
      //trackNum = 0;
      gateServo.detach();
      slotServo.detach();

      digitalWrite(12, LOW);
      //TURN THE RFID READER ON AGAIN
      digitalWrite(RFIDEnablePin, LOW);
    }
    if(val == '1'){  //--if someone stopped churning mid way, eject the card--\\
      digitalWrite(12, LOW);
      //someone has listened to the full track
      //so eject the token and print a receipt
      digitalWrite(12, HIGH);

      //TURN THE RFID READER OFF
      digitalWrite(RFIDEnablePin, HIGH);
      gateServo.attach(8);
      slotServo.attach(9);
      gateServo.write(90);  //open servo
      //slotServo.write(60);
      handleServo.attach(7);
      handleServo.write(90);
      //slot is open, so don't play any track
      thirdSensor = 0;
      delay(3000);       // wait 3 seconds
      gateServo.write(0);   //close servo
      slotServo.write(60);
      delay(2000);
      //set murmur track to play
      //trackNum = 0;
      gateServo.detach();
      slotServo.detach();

      digitalWrite(12, LOW);
      //TURN THE RFID READER ON AGAIN
      digitalWrite(RFIDEnablePin, LOW);
    }
    if(val == '2'){
      digitalWrite(LED_13, LOW);
      handleServo.attach(7);
      handleServo.write(90);
    }
    //IF SOMEONE IS CHURNING - ACTUATE HANDLEMOTOR
    if(val == '3'){
      digitalWrite(slotLight, LOW);
      handleServo.attach(7);
      handleServo.write(70);
    }
    //if someone isn't churning
    //code taken from http://labs.ideo.com/2014/03/20/vodafonepursecharger/
    if(val == '4'){
      static bool isLightOn = false;                    //-- initialize as static (i.e. persistent in this function)
      static unsigned long lastTimeRecorded = millis(); //-- history of time where we switched the lights
      unsigned long currentTime = millis();             //-- read the current time once

      if ( currentTime - lastTimeRecorded > 1000 ) { //-- if it's been more than 1000ms
        if( isLightOn ) {                               //-- and if the light is on
          digitalWrite(slotLight, LOW);                   //-- turn it off
          isLightOn = false;                            //-- set our flag to false
        } else {                                        //-- otherwise, we know the light is off
          digitalWrite(slotLight, HIGH);                  //-- so turn it on
          isLightOn = true;                             //-- set our flag to true
        }
        lastTimeRecorded = currentTime;                 //-- update the last time we switched
      }
    }
    if(val == '5'){
      digitalWrite(LED_13, HIGH);

      printer.begin();
      //PRINT STORY
      printer.setSize('S');
      printer.println("Keep churning to the end!!");
      delay(3000);
      digitalWrite(LED_13, LOW);

      digitalWrite(LED_13, HIGH);
      //printer.feed(1);
      Serial.write(firstSensor);
      Serial.write(encoderValue);
      Serial.write(thirdSensor);

      printer.println(currentStory);
      delay(3000);
      Serial.write(firstSensor);
      Serial.write(encoderValue);
      Serial.write(thirdSensor);
      digitalWrite(LED_13, LOW);
      //PRINT QR
        if(trackNum == 1){
          //printer.printBitmap(story1sml_width, story1sml_height, story1sml_data);
        }

      Serial.write(firstSensor);
      Serial.write(encoderValue);
      Serial.write(thirdSensor);
      digitalWrite(LED_13, HIGH);

      //printer.feed(2);
      printer.sleep();

      digitalWrite(LED_13, LOW);
      RFIDReader.begin(RFIDSerialRate);
    }
    if(val == '6'){
      //printer.wake();
      printer.begin();
      digitalWrite(LED_13, HIGH);
      //PRINT STORY
      printer.setSize('M');
      printer.println("Keep churning!");
      delay(3000);
      Serial.write(firstSensor);
      Serial.write(encoderValue);
      Serial.write(thirdSensor);

      //printer.feed(3);
      digitalWrite(LED_13, LOW);
      printer.sleep();

      RFIDReader.begin(RFIDSerialRate);
    }
    if(val == '7'){
    digitalWrite(LED_13, HIGH);
    printer.wake();
    printer.begin();
    Serial.write(firstSensor);
    Serial.write(encoderValue);
    Serial.write(thirdSensor);
    printer.println("Lucky you - the butter is nearly made!");
    delay(2000);
    digitalWrite(LED_13, LOW);
    //printer.feed(1);
    Serial.write(firstSensor);
    Serial.write(encoderValue);
    Serial.write(thirdSensor);

    digitalWrite(LED_13, HIGH);
    printer.println("check out the link to find out more!");
    delay(2000);
    Serial.write(firstSensor);
    Serial.write(encoderValue);
    Serial.write(thirdSensor);
    printer.println(pdf_link);
    delay(2000);
    //printer.feed(1);
    Serial.write(firstSensor);
    Serial.write(encoderValue);
    Serial.write(thirdSensor);
    printer.println("tear here");
    delay(2000);
    Serial.write(firstSensor);
    Serial.write(encoderValue);
    Serial.write(thirdSensor);

    digitalWrite(LED_13, LOW);
    //printer.feed(3);

    printer.sleep();

    RFIDReader.begin(RFIDSerialRate);
    }
  }

  else{
    Serial.write(firstSensor);
    Serial.write(encoderValue);
    Serial.write(thirdSensor);
  }
}

void establishContact() {
  while (Serial.available() <= 0) {
    Serial.print('A');   // send a capital A
    delay(300);
  }
}

void ReadSerial(String &ReadTagString)
{
  int bytesread = 0;
  int  val = 0;
  char code[10];
  String TagCode="";

  if(RFIDReader.available() > 0) {          // If data available from reader
    if((val = RFIDReader.read()) == 10) {   // Check for header
      bytesread = 0;
      while(bytesread<10) {                 // Read 10 digit code
        if( RFIDReader.available() > 0) {
          val = RFIDReader.read();
          if((val == 10)||(val == 13)) {   // If header or stop bytes before the 10 digit reading
            break;                         // Stop reading
          }
          code[bytesread] = val;           // Add the digit
          bytesread++;                     // Ready to read next digit
        }
      }
      if(bytesread == 10) {                // If 10 digit read is complete

        for(int x=0;x<10;x++)              //Copy the Chars to a String
        {
          TagCode += code[x];
        }
        ReadTagString = TagCode;          //Update the caller
        while(RFIDReader.available() > 0) //Burn off any characters still in the buffer
        {
          RFIDReader.read();
        }

      }
      bytesread = 0;
      TagCode="";
    }
  }
}

void updateEncoder(){
  int MSB = digitalRead(encoderPin1); //MSB = most significant bit
  int LSB = digitalRead(encoderPin2); //LSB = least significant bit

  int encoded = (MSB << 1) |LSB; //converting the 2 pin value to single number
  int sum  = (lastEncoded << 2) | encoded; //adding it to the previous encoded value

  if(sum == 0b1101 || sum == 0b0100 || sum == 0b0010 || sum == 0b1011) encoderValue ++;
  if(sum == 0b1110 || sum == 0b0111 || sum == 0b0001 || sum == 0b1000) encoderValue --;

  lastEncoded = encoded; //store this value for next time
}