/*======================================================================
            PROGRAM INPUT DIGITAL & INPUT ANALOG untuk menguji : 
ESP8266 WeMos_D1_Mini,  ESP32 WeMos_D1_R32 board, ESP32 DevKitC_V4 board 
                  Tampilan pada LCD dan Serial Monitor
======================================================================*/
#include <LiquidCrystal_I2C.h>    //deklarasi library LCD-I2C
LiquidCrystal_I2C lcd(0x27,16,2); //membuat nama objek lcd
int potPin= A0;  //pin A0 sbg input pin utk tegangan analog (D1_Mini)
int PB1 = 2;     //deklarasi pin 2 terhubung ke PB-1
int PB2 = 4;     //deklarasi pin 4 terhubung ke PB-2
int RED = 12;    //pendefinisian pin untuk Led12 (merah)
int YEL = 13;    //pendefinisian pin untuk Led13 (kuning)
int BLU = 14;    //pendefinisian pin untuk Led14 (biru)
int BUZ = 16;    //deklarasi pin 16 terhubung ke Buzzer

void setup()  {
  Serial.begin(115200);  //Aktifkan UART utk tampilkan data ke PC
  lcd.init();                lcd.backlight();   
  lcd.setCursor(0,0);        lcd.print("Tes Board ESP32");  
  lcd.setCursor(0,1);        lcd.print("input Dig+Analog");  
  delay(5000);               lcd.clear();       
  lcd.setCursor(0,0);        lcd.print("Push PB1 or PB2 "); 

  pinMode(PB1,INPUT_PULLUP); pinMode(PB2, INPUT_PULLUP); 
  pinMode(RED, OUTPUT); //Setting pin 12 sebagai Output
  pinMode(YEL, OUTPUT); //Setting pin 13 sebagai Output
  pinMode(BLU, OUTPUT); //Setting pin 14 sebagai Output
  pinMode(BUZ, OUTPUT); //Setting pin 16 sebagai Output
}

void loop() {
  int potValue=analogRead(potPin); //baca tegangan dari pin input analog
  Serial.print("Data Potensio : "); 
  Serial.println(potValue);
  //=======================================================================
  //Cek 3 batas pembacaan Potensio utk menyalakan RED, YEL atau GRE
  if(potValue<=1270) { 
    digitalWrite(BLU, HIGH); digitalWrite(YEL, LOW); digitalWrite(RED, LOW);
  }
  if(potValue>=1271 && potValue<=2640 ) { 
    digitalWrite(BLU, LOW); digitalWrite(YEL, HIGH); digitalWrite(RED, LOW);
  }
  if(potValue>=2641 && potValue<=4095)  { 
    digitalWrite(BLU, LOW); digitalWrite(YEL, LOW); digitalWrite(RED, HIGH);
  }
  //=======================================================================
  //Cek tombol ditekan
  if(digitalRead(PB1) == LOW) {
    Serial.print("PB1 ditekan  ");
    lcd.setCursor(0,0); lcd.print("PB1 pressed!    ");
    digitalWrite(BUZ, HIGH);
    while(digitalRead(PB1)==LOW); // tunggu sampai tombol dilepas
    digitalWrite(BUZ, LOW);
  } else 
  if (digitalRead(PB2) == LOW) {
    Serial.print("PB2 ditekan  "); 
    lcd.setCursor(0,0); lcd.print("PB2 pressed!    ");
    digitalWrite(BUZ, HIGH);
    while(digitalRead(PB2)==0); // tunggu sampai tombol dilepas
    digitalWrite(BUZ, LOW);
  }
  else {  
    lcd.setCursor(0,0); lcd.print("Push PB1 or PB2 ");  
  }
  //=======================================================================
  // Tampilkan analog
  lcd.setCursor(0,1); lcd.print("Dat_Analog: ");
  lcd.setCursor(12,1); lcd.print("     "); //hapus sisa digit lama
  lcd.setCursor(12,1); lcd.print(potValue);
  delay(300); //update tiap 300 mS
}