grindertimer/wtf/wtf.ino

#include <LiquidCrystal.h>
#include <Encoder.h>
#include <stdio.h>


LiquidCrystal lcd(9, 3, 8, 7, 6, 5, 4);
Encoder rotEnc(A0, A1);
long encVal = 0;
int activeTimer=0;
int timerLens[3];
int grindCheck = 0;
bool updateDisplay=false;

bool buttonLeftPressed=false;
void buttonLeft() {
    buttonLeftPressed=true;
}

bool buttonRightPressed=false;
void buttonRight() {
    buttonRightPressed=true;
}

bool buttonMidPressed=false;
void buttonMid() {
    buttonMidPressed=true;
}

bool turnedLeft=false;
void turnLeft() {
    turnedLeft=true;
}

bool turnedRight=false;
void turnRight() {
    turnedRight=true;
}

bool rotPressed=false;
void pressRot() {
    rotPressed=true;
}

void lcdPut(char* text) {
    char str[35];
    sprintf(str, "%s", text);
    lcd.clear(); lcd.home();
    lcd.print(str);
}


void grind(int time) {
    lcdPut("grinding...");
    digitalWrite(2, HIGH);
    delay(time);
    digitalWrite(2, LOW);
    lcdPut("Fin...");
    delay(750);
    updateDisplay=true;
}


void boilerplate() {
  
  if(rotEnc.read() < encVal) {
    encVal = rotEnc.read();
    turnLeft();
    return;
  } else if(rotEnc.read() > encVal) {
    encVal = rotEnc.read();
    turnRight();
    return;
  }
  
  if( digitalRead(A2) == LOW && grindCheck > 17500 ) {
     grind( timerLens[activeTimer] );
     grindCheck = 0;
     delay(25);
  }
  if( digitalRead(A2) == LOW && grindCheck >= 0 && grindCheck <= 17500 ) {
    grindCheck++;
  }
  if( digitalRead(A2) == HIGH && grindCheck > 0 ) {
    grindCheck = 0;
  }

  
  if( digitalRead(A3) == LOW ) {
    buttonLeft();
    delay(25);
  }
  
  if( digitalRead(A4) == LOW ) {
    buttonMid();
    delay(25);
  }
  
  if( digitalRead(A5) == LOW ) {
    buttonRight();
    delay(25);
  }
  
  
}


void loop() {
    boilerplate();
    
    if(buttonLeftPressed) {
        buttonLeftPressed=false;
        activeTimer=0;
        updateDisplay=true;
    }
    if(buttonRightPressed) {
        buttonRightPressed=false;
        activeTimer=2;
        updateDisplay=true;
      }
    if(buttonMidPressed) {
        buttonMidPressed=false;
        activeTimer=1;
        updateDisplay=true;
      }
    if(turnedLeft) {
        turnedLeft=false;
        timerLens[activeTimer] -= 5;
        updateDisplay=true;
      }
    if(turnedRight) {
        turnedRight=false;
        timerLens[activeTimer] += 5;
        updateDisplay=true;
      }
    if(rotPressed) {
        rotPressed=false;
        grind(timerLens[activeTimer]);
        updateDisplay=true;
      }
    
    if(updateDisplay) {
      char str[16];
      sprintf(str, "T%1d:%5d", activeTimer, timerLens[activeTimer]);
      lcdPut(str);
      updateDisplay=false;
    }

}



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

    timerLens[0] = 1000;
    timerLens[1] = 250;
    timerLens[2] = 9950;
        
    pinMode(A3, INPUT);
    digitalWrite(A3,HIGH);
    pinMode(A4, INPUT);
    digitalWrite(A4,HIGH);
    pinMode(A5, INPUT);
    digitalWrite(A5,HIGH);
    
    pinMode(2, OUTPUT);
    digitalWrite(2, LOW);
    
    updateDisplay=true;
  }