MacQuick Vending Software

macquick.c

/*  MacQuick Software Version 0.13
    now it CAN DO something. really. :)
    
    created december 2011
    by vfood software engineering team
    
    version notes
      version 0.14
        - keypad inefficiency has resolved
*/

// include the library code
#include <LiquidCrystal.h>
#define STEP 200

int DONE = 001; int ING1 = 010; int ING2 = 011; int ING3 = 100; int ING4 = 101; int ING5 = 110; int CLR = 111;
int ingredientCounter = 0;
int ing_amount[] = {0, 0, 0, 0, 0};
int ingredient[] = {1000, 1000, 1000, 1000, 1000}; // will be changed
int motorPins[] = {7, 8, 9, 10, 1, 13};

//initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  
  // setup the pins here
  pinMode(6, INPUT);    // keypad serial input
  pinMode(7, OUTPUT);   // motor 1 driver output
  pinMode(8, OUTPUT);   // motor 2 driver output
  pinMode(9, OUTPUT);   // motor 3 driver output
  pinMode(10, OUTPUT);  // motor 4 driver output
  pinMode(1, OUTPUT);   // motor 5 driver output
  pinMode(13, OUTPUT);  // motor 6 driver output
  
  // set up the LCD's number of columns and rows:
  lcd.begin(16,4);
  lcd.clear();

}

void loop() {
  
   // send "ready to lcd"
  lcd.print("hello.  macquick is ready to work");
  
  // wait signal from bill validator and take inputs
  take_inputs(700);

  // check plate
  wait_until_bowlis_there(700);
   
  // pasta & ingredient filling, sending signal to motors
  fill_ingredients(10);
     
}


// modules

// take input module
// takes analog threshold value as an input
void take_inputs(int analog_threshold){
  
  int bill_validator = analogRead(A0);
  if (bill_validator > analog_threshold)
  {
    // send "choose ingredients" message to LCD
    lcd.print("please choose what you want to add to your pasta");
    int doneFlag = 0;
    // here there is some inefficiency since we need to read keypad input consecutively, 
    while(doneFlag != 1)
    {
      
     int keypad = 0; 
     
     // wait until keypad signal has come
     while(keypad == 0)
       keypad = digitalRead(6); 
     
     for(int i = 0; i <= 5; i++)
     {
       ingredientCounter = ingredientCounter + ing_amount[i];
     }
     
     if((keypad == DONE) || (ingredientCounter == 5))
     {
       doneFlag = 1;
       lcd.print("okkey! our dwarfs preparing your meal");
       delay(5000);
     }
     
     else if(keypad = ING1)
     {
       if(ingredient[0] > 0)
       {
         ing_amount[0]++;
       }
       else
       {
         lcd.print("not enough ingredient 1");
         delay(5000); 
       }
     }
     
     else if(keypad = ING2)
     {
       if(ingredient[1] > 0)
       {
         ing_amount[1]++; 
       }
       else
       {
         lcd.print("not enough ingredient 2");
         delay(5000); 
       }
     }
     
     else if(keypad = ING3)
     {
       if(ingredient[2] > 0)
       {
         ing_amount[2]++;
       }
       else
       {
         lcd.print("not enough ingredient 3");
         delay(5000);
       }
     }
     
     else if(keypad = ING4)
     {
       if(ingredient[3] > 0)
       {
         ing_amount[3]++;
       }
       else
       {
         lcd.print("not enough ingredient 4");
         delay(5000);
       }
     }
     
     else if(keypad = ING5)
     {
       if(ingredient[4] > 0)
       {
         ing_amount[4]++; 
       }
       else
       {
         lcd.print("not enough ingredient 5");
         delay(5000);
       }
     }
     
     else if(keypad = CLR)
     {
       // clear all ingredients
       for(int i = 0; i <= 5; i++)
       {
         ing_amount[i] = 0;
       } 
     }   
     
     else
     {
       doneFlag = 0;
     }
    }
  }
}

// bowl check
// takes analog threshold value as an input
void wait_until_bowlis_there(int analog_threshold){
  while(analogRead(A1) < analog_threshold)
  {
    lcd.print("place plate please!");
    delay(100);
  }     
}

// ingredient filling
// takes stepper delay as an input
void fill_ingredients(int stepper_delay){

  for(int i = 0; i < STEP; i++)
  {
    digitalWrite(motorPins[0], HIGH);
    delay(stepper_delay);
  }
  
  while(ingredientCounter!=0)
  {
    for(int i = 0; i <= 5; i++)
    {
      if(ing_amount[i] != 0)
      {
        for(int k = 0; k < STEP; k++)
        {
          digitalWrite(motorPins[i+1], HIGH);
          delay(stepper_delay);
        }
        ing_amount[i]--;
        ingredientCounter--;
      }
    }
  }
  
  lcd.print("you can take your pasta! bon appetit!");
  delay(10000);
  
}