LCDDiceRoller.iso

LCDDiceRoller.iso

/*************************************************************************************

 Dieroller
 Uses the library TrueRandom from https://code.google.com/p/tinkerit/wiki/TrueRandom

 (c) 2015 Jeff D. Conrad

**************************************************************************************/

#include <LiquidCrystal.h>
#include <TrueRandom.h>

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);           // select the pins used on the LCD panel

// define some values used by the panel and buttons
int lcd_key     = 0;
int adc_key_in  = 0;

#define btnRIGHT  0
#define btnUP     1
#define btnDOWN   2
#define btnLEFT   3
#define btnSELECT 4
#define btnNONE   5

int read_LCD_buttons() {              // read the buttons
  adc_key_in = analogRead(0);       // read the value from the sensor

  // my buttons when read are centered at these valies: 0, 144, 329, 504, 741
  // we add approx 50 to those values and check to see if we are close
  // We make this the 1st option for speed reasons since it will be the most likely result

  if (adc_key_in > 1000) return btnNONE;

  // For V1.1 us this threshold
  if (adc_key_in < 50)   return btnRIGHT;
  if (adc_key_in < 250)  return btnUP;
  if (adc_key_in < 450)  return btnDOWN;
  if (adc_key_in < 650)  return btnLEFT;
  if (adc_key_in < 850)  return btnSELECT;

  // For V1.0 comment the other threshold and use the one below:
  /*
    if (adc_key_in < 50)   return btnRIGHT;
    if (adc_key_in < 195)  return btnUP;
    if (adc_key_in < 380)  return btnDOWN;
    if (adc_key_in < 555)  return btnLEFT;
    if (adc_key_in < 790)  return btnSELECT;
  */

  return btnNONE;
}

void setup() {
  lcd.begin(16, 2);
  showTitle();
}

void showTitle() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Diceroller");
}

void loop() {
  lcd.setCursor(0, 1);
  lcd.print("[d100][d10]");

  lcd.setCursor(13, 1);
  lcd.print(millis() % 1000);

  lcd.setCursor(0, 1);
  lcd_key = read_LCD_buttons();

  switch (lcd_key) {

    case btnLEFT: {
        doLeft();
        break;
      }
    case btnRIGHT: {
        doRight();
        break;
      }
  }
}

void doLeft() {
  long d = TrueRandom.random(1, 100);
  drawRoll(d, 100);
}

void doRight() {
  long d = TrueRandom.random(1, 10);
  drawRoll(d, 10);
}

void drawRoll(long d, long r) {
  lcd.setCursor(0, 1);
  String out = String(d) + "/" + String(r);
  while (out.length() < 16) {
     out = out + " ";
  }
  lcd.print(out);
  delay(2000);
  
  showTitle();
}