Interface Modul 8

#include <LiquidCrystal_SR_LCD3.h>
#include <EEPROM.h>
const int PIN_LCD_STROBE = 2;
const int PIN_LCD_DATA = 3;
const int PIN_LCD_CLOCK = 4;
LiquidCrystal_SR_LCD3 lcd(PIN_LCD_DATA, PIN_LCD_CLOCK, PIN_LCD_STROBE);

const int trigPin = 8;
const int echoPin = 9;
int button=7, push=0, ok=0;
int buzzer=11;
int led=6, led1=12, led2=13;

void setup() {
  // initialize serial communication:
  Serial.begin(9600);
  pinMode(button, INPUT);
  pinMode(buzzer, OUTPUT);
  pinMode(led, OUTPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  analogWrite(led, 0);

  lcd.begin(16,2);
  lcd.home();
}

void loop()
{
  // establish variables for duration of the ping,
  // and the distance result in inches and centimeters:
  long duration, inches, cm;

  // The sensor is triggered by a HIGH pulse of 10 or more microseconds.
  // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
  pinMode(trigPin, OUTPUT);
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  // Read the signal from the sensor: a HIGH pulse whose
  // duration is the time (in microseconds) from the sending
  // of the ping to the reception of its echo off of an object.
  pinMode(echoPin, INPUT);
  duration = pulseIn(echoPin, HIGH);

  // convert the time into a distance
  inches = microsecondsToInches(duration);
  cm = microsecondsToCentimeters(duration);

  while(digitalRead(button)==LOW){

    if(push==0 && ok==0){
      push=1;
    }else if(push==1 && ok==1){
      push=2;
    }else if(push==2 && ok==2){
      push=3;
    }else if(push==3 && ok==3){
      digitalWrite(led, LOW);
      digitalWrite(led1, LOW);
      digitalWrite(led2, LOW);
      push=4;
    }else if(push==4 && ok==4){
      push=1;
    }
  }

  if(push==0){
    ok=0;
  }

  if(push==1){
    digitalWrite(led, 0);
    ok=1;
    Serial.print(inches);
    Serial.print("in, ");
    Serial.print(cm);
    Serial.print("cm");
    Serial.println();
    lcd.print(cm);
    lcd.setCursor(5,0);
    lcd.print(" CM");

    delay(100);
    lcd.clear();
  }else if(push==2){
    ok=2;
    lcd.print(cm);
    lcd.setCursor(5,0);
    lcd.print(" CM");
    if(cm < 10){
      digitalWrite(buzzer, HIGH);
      lcd.setCursor(0,1);
      lcd.print(" BUZZER : ON");
    }else{
      digitalWrite(buzzer, LOW);
      lcd.setCursor(0,1);
      lcd.print(" BUZZER : OFF");
    }

    delay(100);
    lcd.clear();
  }else if(push==3){
    ok=3;
    lcd.print(cm);
    lcd.setCursor(5,0);
    lcd.print(" CM");
    int val = 255-(cm);
    if(val < 0){
      val=0;
    }
    Serial.println(val);
    analogWrite(led, val);

    delay(100);
    lcd.clear();
  }else if(push==4){
    ok=4;
    Serial.println(cm);
    lcd.print(cm);
    lcd.setCursor(5,0);
    lcd.print(" CM");
    if(cm < 10){
      lcd.setCursor(0,1);
      lcd.print("1");
      digitalWrite(led, HIGH);
      digitalWrite(led1, LOW);
      digitalWrite(led2, LOW);
      digitalWrite(buzzer, HIGH);
      delay(1000);
      digitalWrite(buzzer, LOW);
    }else if(cm < 20 && cm > 10){
      lcd.setCursor(2,1);
      lcd.print("1");
      digitalWrite(led, LOW);
      digitalWrite(led1, HIGH);
      digitalWrite(led2, LOW);
    }else if(cm < 30 && cm > 20){
      lcd.setCursor(4,1);
      lcd.print("1");
      digitalWrite(led, LOW);
      digitalWrite(led1, LOW);
      digitalWrite(led2, HIGH);
    }else if(cm > 40){
      digitalWrite(led, LOW);
      digitalWrite(led1, LOW);
      digitalWrite(led2, LOW);
    }
    delay(100);
    lcd.clear();
    digitalWrite(buzzer, LOW);
  }
}

long microsecondsToInches(long microseconds)
{
return microseconds / 74 / 2;
}

long microsecondsToCentimeters(long microseconds)
{
return microseconds / 29 / 2;
}