#include <Arduino.h>

/*
 * https://randomnerdtutorials.com/esp32-multiple-ds18b20-temperature-tempSensor/
 */

#include <OneWire.h>
#include <DallasTemperature.h>
#include <ZMPT101B.h>
#include <Adafruit_SSD1306.h>

#define ZMPT101BPIN 35
#define SENSITIVITY 500.0f
#define SCT013PIN 34
#define ACTectionRange 20

OneWire DS18B20_1(4);
OneWire DS18B20_2(2);
OneWire DS18B20_3(15);
OneWire DS18B20_4(13);
OneWire DS18B20_5(12);
OneWire DS18B20_6(14);
OneWire DS18B20_7(27);
OneWire DS18B20_8(26);

DallasTemperature tempSensor1(&DS18B20_1);
DallasTemperature tempSensor2(&DS18B20_2);
DallasTemperature tempSensor3(&DS18B20_3);
DallasTemperature tempSensor4(&DS18B20_4);
DallasTemperature tempSensor5(&DS18B20_5);
DallasTemperature tempSensor6(&DS18B20_6);
DallasTemperature tempSensor7(&DS18B20_7);
DallasTemperature tempSensor8(&DS18B20_8);

ZMPT101B voltSensor(ZMPT101BPIN);

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

float temp1 = 0,temp2 = 0,temp3 = 0,temp4 = 0,temp5 = 0,temp6 = 0,temp7 = 0,temp8 = 0;
float ACvolt = 220.00, ACCurrent = 1.50;

float correctionfactor=6.5; //9

float readACCurrent()
{
  float ACCurrent = 0;
  float peakvolt = 0;
  float voltVirtualValue = 0;  //Vrms
  for (int i = 0; i < 5; i++)
  {
    peakvolt += analogRead(SCT013PIN);   //read peak volt
    peakvolt = peakvolt + correctionfactor;
    delay(1);
  }
  peakvolt = peakvolt / 5;
  voltVirtualValue = peakvolt * 0.707;    //change the peak volt to the Virtual Value of volt

  /*The circuit is amplified by 2 times, so it is divided by 2.*/
  voltVirtualValue = (voltVirtualValue / 1024 * VREF ) / 2;
  ACCurrent = voltVirtualValue * ACTectionRange;
  return ACCurrent;
}

void readSensor()
{
  tempSensor1.requestTemperatures();
  tempSensor2.requestTemperatures();
  tempSensor3.requestTemperatures();
  tempSensor4.requestTemperatures();
  tempSensor5.requestTemperatures();
  tempSensor6.requestTemperatures();
  tempSensor7.requestTemperatures();
  tempSensor8.requestTemperatures();

  temp1 = tempSensor1.getTempCByIndex(0);
  temp2 = tempSensor2.getTempCByIndex(0);
  temp3 = tempSensor3.getTempCByIndex(0);
  temp4 = tempSensor4.getTempCByIndex(0);  
  temp5 = tempSensor5.getTempCByIndex(0);
  temp6 = tempSensor6.getTempCByIndex(0);
  temp7 = tempSensor7.getTempCByIndex(0);
  temp8 = tempSensor8.getTempCByIndex(0);

  ACvolt = voltSensor.getVoltageAC();
  ACCurrent = readACCurrent();
}

String cekTemp(float inputTemp)
{
  float temp = inputTemp;
  if (temp = -127){
    return("---.--");
  }else{
    return(String(inputTemp));
  }
}
void printData()
{
  Serial.println((String)"Temperature: "+cekTemp(temp1)+"ºC | "+cekTemp(temp2)+"ºC | "+cekTemp(temp3)+"ºC | "+cekTemp(temp4)+"ºC | "+cekTemp(temp5)+"ºC | "+cekTemp(temp6)+"ºC | "+cekTemp(temp7)+"ºC | "+cekTemp(temp8)+"ºC | ");
  Serial.println((String)"Tegangan: "+ACvolt+" V | "+"Arus: "+ACCurrent)+" A";
}

void tempDisplay(int B, float value){
  display.setTextColor(SSD1306_WHITE, SSD1306_BLACK);
  Serial.println((String)value+" ");
  if (value >= 100){
    display.setCursor(6, B);
    display.print(value);
  }else if (value >= 10){
          display.setCursor(12, B);
          display.print(value);    
        }else if (value >= 0){
                display.setCursor(18, B);
                display.print(value);
              }else if (value > -10){
                      display.setCursor(12, B);
                      display.print(value);
                    }else if (value > -100){
                            display.setCursor(6, B);
                            display.print(value);
                          }
  display.setCursor(42, B);display.write(247);
  display.setCursor(48, B);display.write('C');
}

void vcDisplay(float v, float c){
  display.setTextSize(1);
  display.setCursor(56,10);  display.print("TEMPERATURE");
  display.setCursor(56,36);  display.print("CURRENT");

  display.setTextSize(2);
  if(v >= 100){
    display.setCursor(56,20);  display.print(v);
  }else if(v >= 10){
    display.setCursor(68,20);  display.print(v);  
  }else{
    display.setCursor(80,20);  display.print(v);  
  }
  if(c >= 100){
    display.setCursor(56,46);  display.print(c);
  }else if(c >= 10){
    display.setCursor(68,46);  display.print(c);  
  }else{
    display.setCursor(80,46);  display.print(c);  
  }  
}

void displaySensors()
{
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_BLACK, SSD1306_WHITE);
  
  display.setCursor(0, 0);  display.write('1');
  display.setCursor(0, 8);  display.write('2');
  display.setCursor(0, 16); display.write('3');
  display.setCursor(0, 24); display.write('4');
  display.setCursor(0, 32); display.write('5');
  display.setCursor(0, 38); display.write('6');
  display.setCursor(0, 46); display.write('7');
  display.setCursor(0, 54); display.write('8');

  // display.setCursor(56,0);  display.print("18:43:11");
  tempDisplay(0, temp1);
  tempDisplay(8, temp2);
  tempDisplay(16, temp3);
  tempDisplay(24, temp4);
  tempDisplay(32, temp5);
  tempDisplay(38, temp6);
  tempDisplay(46, temp7);
  tempDisplay(54, temp8);
  vcDisplay(ACvolt,ACCurrent);

  display.display();
}

void setup()
{
  Serial.begin(115200);
  tempSensor1.begin();
  tempSensor2.begin();
  tempSensor3.begin();
  tempSensor4.begin();
  tempSensor5.begin();
  tempSensor6.begin();
  tempSensor7.begin();
  tempSensor8.begin();
  voltSensor.setSensitivity(SENSITIVITY);
  pinMode(SCT013PIN,INPUT);

  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while (1);
  }
  delay(2000);
  display.clearDisplay();

}

void loop(){
  //readSensor();
  delay(1000);
  //printData();
  displaySensors();
}