Χρειάζονται κάποιες βιβλιοθήκες για να είναι λειτουργικός ο παρακάτω κώδικας
Dallas Temperature
https://drive.google.com/file/d/1-k9Zcxs7-vu02EN06LqbDUDBoGQbbmqn/view?usp=drive_link
OneWire
https://drive.google.com/file/d/10xkNPnv_KbBdNIBFpRPkUGBLGTzU58iL/view?usp=drive_link
Για την οθόνη LCD I2C χρειάζεται
https://drive.google.com/file/d/1OPMAmsVRVzX4PpuPRF2CxV5Eiw2gs5Jy/view?usp=drive_link
#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows
const int SENSOR_PIN = 2; // Arduino pin connected to DS18B20 sensor's DQ pin
OneWire oneWire(SENSOR_PIN); // setup a oneWire instance
DallasTemperature tempSensor(&oneWire); // pass oneWire to DallasTemperature library
#define BME280_ADDRESS 0x76
unsigned long int temp_raw,pres_raw;
// hum_raw,
signed long int t_fine;
uint16_t dig_T1;
int16_t dig_T2;
int16_t dig_T3;
uint16_t dig_P1;
int16_t dig_P2;
int16_t dig_P3;
int16_t dig_P4;
int16_t dig_P5;
int16_t dig_P6;
int16_t dig_P7;
int16_t dig_P8;
int16_t dig_P9;
int8_t dig_H1;
int16_t dig_H2;
int8_t dig_H3;
int16_t dig_H4;
int16_t dig_H5;
int8_t dig_H6;
float tempCelsius; // temperature in Celsius
float tempFahrenheit; // temperature in Fahrenheit
void setup()
{
uint8_t osrs_t = 1; //Temperature oversampling x 1
uint8_t osrs_p = 1; //Pressure oversampling x 1
uint8_t osrs_h = 1; //Humidity oversampling x 1
uint8_t mode = 3; //Normal mode
uint8_t t_sb = 5; //Tstandby 1000ms
uint8_t filter = 0; //Filter off
uint8_t spi3w_en = 0; //3-wire SPI Disable
uint8_t ctrl_meas_reg = (osrs_t << 5) | (osrs_p << 2) | mode;
uint8_t config_reg = (t_sb << 5) | (filter << 2) | spi3w_en;
uint8_t ctrl_hum_reg = osrs_h;
Serial.begin(9600); // initialize serial
Wire.begin();
tempSensor.begin(); // initialize the sensor
lcd.init(); // initialize the lcd
lcd.backlight(); // open the backlight
writeReg(0xF2,ctrl_hum_reg);
writeReg(0xF4,ctrl_meas_reg);
writeReg(0xF5,config_reg);
readTrim();
}
void loop()
{
tempSensor.requestTemperatures(); // send the command to get temperatures
tempCelsius = tempSensor.getTempCByIndex(0); // read temperature in Celsius
tempFahrenheit = tempCelsius * 9 / 5 + 32; // convert Celsius to Fahrenheit
Serial.println();
Serial.print("Temperature: ");
Serial.print(tempCelsius); // print the temperature in Celsius
Serial.print("°C");
Serial.print(" ~ "); // separator between Celsius and Fahrenheit
Serial.print(tempFahrenheit); // print the temperature in Fahrenheit
Serial.println("°F");
delay(500);
// printValues(); // function to display barometric pressure
// delay(delayTime);
lcd.clear();
lcd.setCursor(0, 0); // start to print at the first row
lcd.print(tempCelsius); // print the temperature in Celsius
lcd.print((char)223); // print ° character
lcd.print("C");
lcd.setCursor(0, 1); // start to print at the second row
lcd.print(tempFahrenheit); // print the temperature in Fahrenheit
lcd.print((char)223); // print ° character
lcd.print("F");
delay(500);
double temp_act = 0.0, press_act = 0.0,hum_act=0.0;
signed long int temp_cal;
unsigned long int press_cal,hum_cal;
readData();
temp_cal = calibration_T(temp_raw);
press_cal = calibration_P(pres_raw);
// hum_cal = calibration_H(hum_raw);
temp_act = (double)temp_cal / 100.0;
press_act = (double)press_cal / 100.0;
// hum_act = (double)hum_cal / 1024.0;
Serial.print("TEMP : ");
Serial.print(temp_act);
Serial.print(" DegC PRESS : ");
Serial.print(press_act);
// Serial.print(" hPa HUM : ");
// Serial.print(hum_act);
// Serial.println(" %");
delay(1000);
}
void readTrim()
{
uint8_t data[32],i=0; // Fix 2014/04/06
Wire.beginTransmission(BME280_ADDRESS);
Wire.write(0x88);
Wire.endTransmission();
Wire.requestFrom(BME280_ADDRESS,24); // Fix 2014/04/06
while(Wire.available()){
data[i] = Wire.read();
i++;
}
Wire.beginTransmission(BME280_ADDRESS); // Add 2014/04/06
Wire.write(0xA1); // Add 2014/04/06
Wire.endTransmission(); // Add 2014/04/06
Wire.requestFrom(BME280_ADDRESS,1); // Add 2014/04/06
data[i] = Wire.read(); // Add 2014/04/06
i++; // Add 2014/04/06
Wire.beginTransmission(BME280_ADDRESS);
Wire.write(0xE1);
Wire.endTransmission();
Wire.requestFrom(BME280_ADDRESS,7); // Fix 2014/04/06
while(Wire.available()){
data[i] = Wire.read();
i++;
}
dig_T1 = (data[1] << 8) | data[0];
dig_T2 = (data[3] << 8) | data[2];
dig_T3 = (data[5] << 8) | data[4];
dig_P1 = (data[7] << 8) | data[6];
dig_P2 = (data[9] << 8) | data[8];
dig_P3 = (data[11]<< 8) | data[10];
dig_P4 = (data[13]<< 8) | data[12];
dig_P5 = (data[15]<< 8) | data[14];
dig_P6 = (data[17]<< 8) | data[16];
dig_P7 = (data[19]<< 8) | data[18];
dig_P8 = (data[21]<< 8) | data[20];
dig_P9 = (data[23]<< 8) | data[22];
dig_H1 = data[24];
dig_H2 = (data[26]<< 8) | data[25];
dig_H3 = data[27];
dig_H4 = (data[28]<< 4) | (0x0F & data[29]);
dig_H5 = (data[30] << 4) | ((data[29] >> 4) & 0x0F); // Fix 2014/04/06
dig_H6 = data[31]; // Fix 2014/04/06
}
void writeReg(uint8_t reg_address, uint8_t data)
{
Wire.beginTransmission(BME280_ADDRESS);
Wire.write(reg_address);
Wire.write(data);
Wire.endTransmission();
}
void readData()
{
int i = 0;
uint32_t data[8];
Wire.beginTransmission(BME280_ADDRESS);
Wire.write(0xF7);
Wire.endTransmission();
Wire.requestFrom(BME280_ADDRESS,8);
while(Wire.available()){
data[i] = Wire.read();
i++;
}
pres_raw = (data[0] << 12) | (data[1] << 4) | (data[2] >> 4);
temp_raw = (data[3] << 12) | (data[4] << 4) | (data[5] >> 4);
// hum_raw = (data[6] << 8) | data[7];
}
signed long int calibration_T(signed long int adc_T)
{
signed long int var1, var2, T;
var1 = ((((adc_T >> 3) - ((signed long int)dig_T1<<1))) * ((signed long int)dig_T2)) >> 11;
var2 = (((((adc_T >> 4) - ((signed long int)dig_T1)) * ((adc_T>>4) - ((signed long int)dig_T1))) >> 12) * ((signed long int)dig_T3)) >> 14;
t_fine = var1 + var2;
T = (t_fine * 5 + 128) >> 8;
return T;
}
unsigned long int calibration_P(signed long int adc_P)
{
signed long int var1, var2;
unsigned long int P;
var1 = (((signed long int)t_fine)>>1) - (signed long int)64000;
var2 = (((var1>>2) * (var1>>2)) >> 11) * ((signed long int)dig_P6);
var2 = var2 + ((var1*((signed long int)dig_P5))<<1);
var2 = (var2>>2)+(((signed long int)dig_P4)<<16);
var1 = (((dig_P3 * (((var1>>2)*(var1>>2)) >> 13)) >>3) + ((((signed long int)dig_P2) * var1)>>1))>>18;
var1 = ((((32768+var1))*((signed long int)dig_P1))>>15);
if (var1 == 0)
{
return 0;
}
P = (((unsigned long int)(((signed long int)1048576)-adc_P)-(var2>>12)))*3125;
if(P<0x80000000)
{
P = (P << 1) / ((unsigned long int) var1);
}
else
{
P = (P / (unsigned long int)var1) * 2;
}
var1 = (((signed long int)dig_P9) * ((signed long int)(((P>>3) * (P>>3))>>13)))>>12;
var2 = (((signed long int)(P>>2)) * ((signed long int)dig_P8))>>13;
P = (unsigned long int)((signed long int)P + ((var1 + var2 + dig_P7) >> 4));
return P;
}
unsigned long int calibration_H(signed long int adc_H)
{
signed long int v_x1;
v_x1 = (t_fine - ((signed long int)76800));
v_x1 = (((((adc_H << 14) -(((signed long int)dig_H4) << 20) - (((signed long int)dig_H5) * v_x1)) +
((signed long int)16384)) >> 15) * (((((((v_x1 * ((signed long int)dig_H6)) >> 10) *
(((v_x1 * ((signed long int)dig_H3)) >> 11) + ((signed long int) 32768))) >> 10) + (( signed long int)2097152)) *
((signed long int) dig_H2) + 8192) >> 14));
v_x1 = (v_x1 - (((((v_x1 >> 15) * (v_x1 >> 15)) >> 7) * ((signed long int)dig_H1)) >> 4));
v_x1 = (v_x1 < 0 ? 0 : v_x1);
v_x1 = (v_x1 > 419430400 ? 419430400 : v_x1);
return (unsigned long int)(v_x1 >> 12);
}
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