calculator_Roquitte.ino

wh#include <Wire.h>
#include "Adafruit_Trellis.h"
#include <LiquidCrystal.h>
LiquidCrystal lcd(12,11,5,4,3,2);
const int LCD_WIDTH = 16, LCD_ROWS = 2;
const int DISPLAY_CONTRAST = 130;
const int DISPLAY_PWM = 6; 

#define MOMENTARY 0
#define LATCHING 1
#define MODE MOMENTARY 


Adafruit_Trellis matrix0 = Adafruit_Trellis();

Adafruit_TrellisSet trellis =  Adafruit_TrellisSet(&matrix0);

#define NUMTRELLIS 1
#define numKeys (NUMTRELLIS * 16)
#define INTPIN A2

void setup() {
  Serial.begin(9600);

  analogWrite(DISPLAY_PWM, DISPLAY_CONTRAST);
  lcd.begin(LCD_WIDTH, LCD_ROWS);
  lcd.clear();
  lcd.print("   Calculator");
  
  // INT pin requires a pullup
  pinMode(INTPIN, INPUT);
  digitalWrite(INTPIN, HIGH);

  trellis.begin(0x70);

  for (uint8_t i=0; i<numKeys; i++) {
    trellis.setLED(i);
    trellis.writeDisplay();    
    delay(50);
  }
  for (uint8_t i=0; i<numKeys; i++) {
    trellis.clrLED(i);
    trellis.writeDisplay();    
    delay(50);
  }
  eaqLED();
}


void loop() {
  writeLCDvalues();
  delay(30); // 30ms delay is required, dont remove me!

  if (trellis.readSwitches()) {
      for (uint8_t i=0; i<numKeys; i++) {
        if (trellis.justPressed(i)) {
          //Serial.print("v"); Serial.println(i);
          trellis.setLED(i);
          calculate(i);
        } 
        if (trellis.justReleased(i)) {
          //Serial.print("^"); Serial.println(i);
          trellis.clrLED(i);
        }
      }
      trellis.writeDisplay();
    }
  
  /*if (MODE == MOMENTARY) {
    // If a button was just pressed or released...
    if (trellis.readSwitches()) {
      // go through every button
      for (uint8_t i=0; i<numKeys; i++) {
  // if it was pressed, turn it on
  if (trellis.justPressed(i)) {
    Serial.print("v"); Serial.println(i);
    trellis.setLED(i);
  } 
  // if it was released, turn it off
  if (trellis.justReleased(i)) {
    Serial.print("^"); Serial.println(i);
    trellis.clrLED(i);
  }
      }
      // tell the trellis to set the LEDs we requested
      trellis.writeDisplay();
    }
  }

  if (MODE == LATCHING) {
    // If a button was just pressed or released...
    if (trellis.readSwitches()) {
      // go through every button
      for (uint8_t i=0; i<numKeys; i++) {
        // if it was pressed...
  if (trellis.justPressed(i)) {
    Serial.print("v"); Serial.println(i);
    // Alternate the LED
    if (trellis.isLED(i))
      trellis.clrLED(i);
    else
      trellis.setLED(i);
        } 
      }
      // tell the trellis to set the LEDs we requested
      trellis.writeDisplay();
    }
  }*/
}

const int eaqDELAY = 100;

void eaqLED() {
  trellis.setLED(15);
  delay(eaqDELAY);
  trellis.writeDisplay();
  trellis.clrLED(15);
  trellis.setLED(14);
  trellis.setLED(11);
  delay(eaqDELAY);
  trellis.writeDisplay();
  trellis.clrLED(11);
  trellis.clrLED(14);
  trellis.clrLED(15);
  trellis.setLED(7);
  trellis.setLED(10);
  trellis.setLED(13);
  delay(eaqDELAY);
  trellis.writeDisplay();
  trellis.clrLED(7);
  trellis.clrLED(10);
  trellis.clrLED(13);
  trellis.setLED(3);
  trellis.setLED(6);
  trellis.setLED(9);
  trellis.setLED(12);
  delay(eaqDELAY);
  trellis.writeDisplay();
  trellis.clrLED(3);
  trellis.clrLED(6);
  trellis.clrLED(9);
  trellis.clrLED(12);
  trellis.setLED(2);
  trellis.setLED(5);
  trellis.setLED(8);
  delay(eaqDELAY);
  trellis.writeDisplay();
  trellis.clrLED(2);
  trellis.clrLED(5);
  trellis.clrLED(8);
  trellis.setLED(1);
  trellis.setLED(4);
  delay(eaqDELAY);
  trellis.writeDisplay();
  trellis.clrLED(1);
  trellis.clrLED(4);
  trellis.setLED(0);
  delay(eaqDELAY);
  trellis.writeDisplay();
  trellis.clrLED(0);
  delay(eaqDELAY);
  trellis.writeDisplay();
}

const int clrDELAY = 100;

void clrLED() {
  for (int i = 0; i < numKeys; i++) {
    trellis.setLED(i);
  }
  trellis.writeDisplay();
  delay(clrDELAY);
  for (int i = 0; i < numKeys; i++) {
    trellis.clrLED(i);
  }
  trellis.writeDisplay();
}

void divLED(bool on) {
  if (on) {
    trellis.setLED(3);
    trellis.setLED(6);
    trellis.setLED(9);
    trellis.setLED(12);
  }
  if (!on) {
    trellis.clrLED(3);
    trellis.clrLED(6);
    trellis.clrLED(9);
    trellis.clrLED(12);
  }
}
void mltplyLED(bool on) {
  if (on) {
    trellis.setLED(5);
    trellis.setLED(6);
    trellis.setLED(9);
    trellis.setLED(10);
  }
  if (!on) {
    trellis.clrLED(5);
    trellis.clrLED(6);
    trellis.clrLED(9);
    trellis.clrLED(10);
  }
}
void addLED(bool on) {
  if (on) {
    trellis.setLED(1);
    trellis.setLED(4);
    trellis.setLED(5);
    trellis.setLED(6);
    trellis.setLED(9);
  }
  if (!on) {
    trellis.clrLED(1);
    trellis.clrLED(4);
    trellis.clrLED(5);
    trellis.clrLED(6);
    trellis.clrLED(9);
  }
}
void subLED(bool on) {
  if (on) {
    trellis.setLED(4);
    trellis.setLED(5);
    trellis.setLED(6);
  }
  if (!on) {
    trellis.clrLED(4);
    trellis.clrLED(5);
    trellis.clrLED(6);
  }
}

int opr;
bool wasAns = false;
float ans;
String num1, num2, oprStr;
bool isNum2 = false;
const int DIV = 14, MLTPLY = 13, SUB = 12, ADD = 11, EAQ = 10, CLEAR = 15;
const int KEYPAD[16] = {0, DIV, MLTPLY, CLEAR, 
                        7, 8, 9, SUB, 
                        4, 5, 6, ADD, 
                        1, 2, 3, EAQ};

void calculate(int button) {
  if (KEYPAD[button] >= 10) {
    if (KEYPAD[button] == EAQ) {
      eaqLED();
    }
    if (KEYPAD[button] == CLEAR) {
      clrLED();
      resetValues();
    }
    else if (isNum2 == true) {
      if (opr == DIV) {
        divLED(false);
        ans = (float)num1.toInt()/(float)num2.toInt();
        Serial.print("ANS: ");
        Serial.println(ans);
      }
      if (opr == MLTPLY) {
        mltplyLED(false);
        ans = (float)num1.toInt()*(float)num2.toInt();
        Serial.print("ANS: ");
        Serial.println(ans);
      }
      if (opr == ADD) {
        addLED(false);
        ans = (float)num1.toInt()+(float)num2.toInt();
        Serial.print("ANS: ");
        Serial.println(ans);
      }
      if (opr == SUB) {
        subLED(false);
        ans = (float)num1.toInt()-(float)num2.toInt();
        Serial.print("ANS: ");
        Serial.println(ans);
      }
      reset();
    }
    else {
      opr = KEYPAD[button];
      if (KEYPAD[button] == DIV) {
        divLED(true);
        oprStr = "/";
      }
      else if (KEYPAD[button] == MLTPLY) {
        mltplyLED(true);
        oprStr = "*";
      }
      else if (KEYPAD[button] == ADD) {
        addLED(true);
        oprStr = "+";
      }
      else if (KEYPAD[button] == SUB) {
        subLED(true);
        oprStr = "-";
      }
      isNum2 = true;
    }
  }
  else if (isNum2 == false) {
    if (wasAns) {
      num1 = "";
      wasAns = false;
    }
    num1 = num1 + KEYPAD[button];
  }
  else {
    num2 = num2 + KEYPAD[button];
  }
  Serial.println("--------------------------------------");
  Serial.println(isNum2);
  Serial.println(num1);
  Serial.println(oprStr);
  Serial.println(num2);
  Serial.println("--------------------------------------");
}

void resetValues() {
  Serial.println("CLEARING VALUES");
  num1 = "";
  num2 = "";
  ans = 0;
  opr = 0;
  oprStr = "";
  isNum2 = false;
}

void reset() {
  num1 = ans;
  num2 = "";
  ans = 0;
  opr = 0;
  oprStr = "";
  wasAns = true;
  isNum2 = false;
}

void writeLCDvalues() {
  lcd.clear();
  if (num1 == "" && num2 == "") {
    displayLCD(1, ans);
  }
  else {
    displayLCD(1, num1);
    displayLCD(2, num2);
    displayLCD(3, oprStr);
  }
}

void displayLCD(int line, String value) {
  //lcd.clear();
  if (line == 1) {
    lcd.setCursor(0,0);
  }
  else if (line == 3) {
    lcd.setCursor(15,0);
  }
  else {
    lcd.setCursor(0,1);
  }
  lcd.print(value);
}
void displayLCD(int line, float value) {
  //lcd.clear();
  if (line == 1) {
    lcd.setCursor(0,0);
  }
  else {
    lcd.setCursor(0,1);
  }
  lcd.print(value);
}