/*
 *
 * Increase_Decrease_PERCENTAGE.ino
 *
 *
 * https://wokwi.com/projects/417249831108067329
 *
 *
*/

/*
void PRCNTG_Calc(uint16_t Xadc, uint16_t Xsldr, int16_t &outValue16, float &flt_Prcntg) {
  //
  // https://www.omnicalculator.com/it/matematica/incremento-percentuale
  //
  // < PERCENTAGE > Increase / Decrease values
  //
  // Xfinal (Xadc) -----> LDR [ADC] value --> Gstct_SLIDER.AdcLDRval16
  // Xinitial (Xsldr) --> SLIDER value -----> Gstct_SLIDER.SLIDERpos16
  //
  // (((Xadc-Xsldr)/Xsldr)*100) ==> % Increase [Xadc value greater than Xsldr]
  // (((Xsldr-Xadc)/Xsldr)*100) <== % Decrease [Xadc value less than Xsldr]
  //
  flt_Prcntg = (((float)Xadc-(float)Xsldr)/(float)Xsldr);
  outValue16 = Xsldr + ((float)Xsldr * flt_Prcntg);
  //
} // PRCNTG_Calc()
*/
//
struct stct_DS18B20_t {
  //
  const float InsdLOWalarm   =  6.0F; // Inside_Sensor LOW TEMPERATURE alarm
  const float InsdHIGHalarm  = 49.0F; // Inside Sensor HIGH Temperature alarm
  const float OtsdLOWalarm   = -5.0F; // Outside_Sensor LOW TEMPERATURE alarm
  const float Otsd_HighWrng  = 45.0F; // Outside_Sensor FIRST HIGH Temperature alarm
  const float OtsdHIGHalarm  = 55.0F; // Outside_Sensor SECOND HIGH Temperature alarm
  //
} Gstct_DS18B20;
//

bool Gstct_GLBL_blConditionsAreChanged = false;

float chk_Temperature(bool INSIDEtmprtr, float fl_tempC) {
  //
  //
  static float fl_prvsInTmp = -99.9F, fl_prvsOutTmp = -99.9F, fl_Trhshld = 1.99F;
  uint8_t mssgCODE8 = 0;
  //
  if (fl_tempC > -30.0) {
    // NOTE: [[ (> -30.0) means LESS NEGATIVE temperature { -29.99, -19.31, -9.07 etc.} ]]
    //
    mssgCODE8 = 0;
    // check temperatures range
    //
    // 41 Gstct_DS18B20.InsdHIGHalarm -> 49.0 -> (2816)=> 'WARNING_HIGH_INSIDE_temperature_required_INSPECTION'
    // 42 Gstct_DS18B20.InsdLOWalarm  ->  6.0 -> (2816)=> 'WARNING_LOW_INSIDE_temperature_Please_Keep_it_Checked'
    //
    if (INSIDEtmprtr) {
      // INSIDE Temperatures
      //
      if (fl_tempC >= Gstct_DS18B20.InsdHIGHalarm) {
        fl_prvsInTmp = fl_tempC;
        mssgCODE8 = 41; // 'WARNING_HIGH_INSIDE_temperature_required_INSPECTION'
      } else if (fl_tempC <= Gstct_DS18B20.InsdLOWalarm) {
        fl_prvsInTmp = fl_tempC;
        mssgCODE8 = 42; // 'WARNING_LOW_INSIDE_temperature_Please_Keep_it_Checked'
      } else if ((fl_tempC > (fl_prvsInTmp + fl_Trhshld)) || (fl_tempC < (fl_prvsInTmp - fl_Trhshld))) {
        // the measured variation is greater than +/- <fl_Trhshld> compared to the previous value
        fl_prvsInTmp = fl_tempC;
        mssgCODE8 = 43; // INSIDE operating temperatures range [6.01C to 48.99C]
        // Temperature value has changed: enable log message
        Gstct_GLBL_blConditionsAreChanged = true;
        //
      }// if-else
      //
    } else {
      // OUTSIDE Temperatures
      //
      // 37 Gstct_DS18B20.Otsd_HighWrng -> 45.0 -> (6407)=> 'Alarm_HIGH_OUTSIDE_Temperature_*_Please_Keep_it_Checked_*'
      // 38 Gstct_DS18B20.OtsdHIGHalarm -> 55.0 -> (6408)=> 'ALARM_HOT_OUTSIDE_REQUIRED_IMMEDIATE_VISUAL_INSPECTION_HOT'
      // 39 Gstct_DS18B20.OtsdLOWalarm  -> -5.0 -> (6409)=> 'Alarm_LOW_OUTSIDE_Temperature_*_Please_Keep_it_Checked_*'
      //
      // check temperatures range
      if (fl_tempC >= Gstct_DS18B20.OtsdHIGHalarm) {
        fl_prvsOutTmp = fl_tempC;
        mssgCODE8 = 38; // 'ALARM_HOT_OUTSIDE_REQUIRED_IMMEDIATE_VISUAL_INSPECTION_HOT'
      } else if (fl_tempC >= Gstct_DS18B20.Otsd_HighWrng) {
        fl_prvsOutTmp = fl_tempC;
        mssgCODE8 = 37; // 'Alarm_HIGH_OUTSIDE_Temperature_Please_Keep_it_Checked'
      } else if (fl_tempC <= Gstct_DS18B20.OtsdLOWalarm) {
        fl_prvsOutTmp = fl_tempC;
        mssgCODE8 = 39; // 'Alarm_LOW_OUTSIDE_Temperature_Please_Keep_it_Checked'
      } else if ((fl_tempC > (fl_prvsOutTmp + fl_Trhshld)) || (fl_tempC < (fl_prvsOutTmp - fl_Trhshld))) {
        // the measured variation is greater than +/- <fl_Trhshld> compared to the previous value
        fl_prvsOutTmp = fl_tempC;
        mssgCODE8 = 40; // OUTSIDE operating temperatures range [-4.99 to 44.99C]
        // Temperature value has changed: enable log message
        Gstct_GLBL_blConditionsAreChanged = true;
        //
      }// if-else
      //
    }// if-else
    //
    if (mssgCODE8 > 36) {
      //
      switch (mssgCODE8) {
      
        case 37:
          Serial.printf("*** chk_Temperature(37) - %s", "(6407) Alarm_HIGH_OUTSIDE_Temperature_*_Please_Keep_it_Checked_*");
          break;

        case 38:
          Serial.printf("*** chk_Temperature(38) - %s", "(6408) ALARM_HOT_OUTSIDE_REQUIRED_IMMEDIATE_VISUAL_INSPECTION_HOT");
          break;

        case 39:
          Serial.printf("*** chk_Temperature(39) - %s", "(6409) Alarm_LOW_OUTSIDE_Temperature_*_Please_Keep_it_Checked_*");
          break;

        case 40:
          Serial.printf("*** chk_Temperature(40) - %s", "(2803) OUTSIDE_temperature");
          break;

        case 41:
          Serial.printf("*** chk_Temperature(41) - %s", "(2816) WARNING_HIGH_INSIDE_temperature_required_INSPECTION");
          break;

        case 42:
          Serial.printf("*** chk_Temperature(42) - %s", "(2816) WARNING_LOW_INSIDE_temperature_Please_Keep_it_Checked");
          break;

        case 43:
          Serial.printf("*** chk_Temperature(43) - %s", "(2816) INSIDE_temperature");
          break;

        default:
          //
          Serial.printf("*** chk_Temperature(default) - mssgCODE8 = %d", mssgCODE8);
          //
          break;

      } // switch
      //
    } else {
      // reading is invalid
      fl_tempC = -99.9;
      Serial.printf("*** chk_Temperature(-ELSE-) - mssgCODE8 = %d", mssgCODE8);
      //
    } // if-else
    //
  } // if-else ( > -30 C)...
  //
Serial.printf(", fl_tempC=>%f, fl_prvsInTmp=>%f, fl_prvsOutTmp=>%f\n", fl_tempC, fl_prvsInTmp, fl_prvsOutTmp );
//Serial.printf("\n*** chk_Temperature(OUT) - mssgCODE8 = %d, fl_tempC=>%f, fl_prvsInTmp=>%f, fl_prvsOutTmp=>%f\n", mssgCODE8, fl_tempC, fl_prvsInTmp, fl_prvsOutTmp );
  //
  return fl_tempC;
  //
} // chk_Temperature()


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  //
/*
  uint16_t Xadc, Xsldr;
  int16_t outValue16;
  float flt_Prcntg;
  //
  Xadc = 700, Xsldr = 750;
  PRCNTG_Calc(Xadc, Xsldr, outValue16, flt_Prcntg);
  //
  Serial.printf("%s -> %.4f", "flt_Prcntg [<]", flt_Prcntg);
  Serial.printf("%s -> %d\n", "outValue16 [<]", outValue16);
  //
  Xadc = 750, Xsldr = 750;
  PRCNTG_Calc(Xadc, Xsldr, outValue16, flt_Prcntg);
  //
  Serial.printf("%s -> %.4f", "flt_Prcntg [=]", flt_Prcntg);
  Serial.printf("%s -> %d\n", "outValue16 [=]", outValue16);
  //
  Xadc = 800, Xsldr = 750;
  PRCNTG_Calc(Xadc, Xsldr, outValue16, flt_Prcntg);
  //
  Serial.printf("%s -> %.4f", "flt_Prcntg [>]", flt_Prcntg);
  Serial.printf("%s -> %d\n", "outValue16 [>]", outValue16);
*/
  //
} // setup()


void loop() {
  //
  static float fl_tempC  = -39.45F;
  static bool INSIDEtmprtr = true;
  //
  fl_tempC += 1.0;
  //
  chk_Temperature(INSIDEtmprtr, fl_tempC);
  //
  if (fl_tempC > 128.00F) {
    fl_tempC  = -39.45F;
    INSIDEtmprtr = !INSIDEtmprtr;
  } // if
  //
  delay(75);
  //
} // loop()



/*

Serial Monitor Output:

Hello, ESP32!


*/