#include <Arduino.h>

/*
 * Name: lf_7_2_themenwoche_2.ino
 * Date: 2023/04/26
 * Author: heimvon2
 * Version 1.0
 * Wokwi-Simulation Arduino-Modul
 *
 * https://wokwi.com/projects/363049828620075009
 */

#include <LiquidCrystal.h>

#define PIN_TRIG 3
#define PIN_ECHO 2
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

byte warning_icon[8] = {B00100, B00100, B01110, B01010, B11011, B11111, B11011, B11111};
int id = 0;

void setup() {
    Serial.begin(115200);
    pinMode(PIN_TRIG, OUTPUT);
    pinMode(PIN_ECHO, INPUT);

    lcd.begin(16, 2);
    lcd.setCursor(0, 0);
    lcd.print("Fuellstand");
    lcd.createChar(0, warning_icon);
    Serial.print("id;Fuellstand;Prozent;Liter");
    Serial.println();
}

void loop() {
    // Start a new measurement:
    digitalWrite(PIN_TRIG, HIGH);
    delayMicroseconds(10);
    digitalWrite(PIN_TRIG, LOW);

    // Read the result:
    float duration = pulseIn(PIN_ECHO, HIGH);
    float abstand_cm = duration / 58.475 ;
    float fuellstand_cm = 8 - abstand_cm ;

    if (((fuellstand_cm / 8) * 100) < 25) {
        lcd.setCursor(12, 0);
        lcd.print("Acht");
        lcd.setCursor(12, 1);
        lcd.print("ung");
        lcd.write(byte(0));
    } else {
        lcd.setCursor(12, 0);
        lcd.print("    ");
        lcd.setCursor(12, 1);
        lcd.print("    ");
    }

    lcd.setCursor(0, 1);
    lcd.print(fuellstand_cm + String(" cm   "));

    delay(1500);

    lcd.setCursor(0, 1);
    lcd.print((fuellstand_cm / 8) * 100 + String(" %    "));

    delay(1500);

    lcd.setCursor(0, 1);
    lcd.print(fuellstand_cm * 25000 + String(" l  "));

    delay(1500);

    Serial.print(id);
    Serial.print(";");
    Serial.print(fuellstand_cm);
    Serial.print(";");
    Serial.print((fuellstand_cm / 8) * 100);
    Serial.print(";");
    Serial.print(fuellstand_cm * 25000);
    Serial.println();
    id++;
    delay(1000);
}