===== ESP32 + BME280 w/ Arduino IDE =====


[[https://randomnerdtutorials.com/esp32-bme280-arduino-ide-pressure-temperature-humidity/]]


**BMP280 vs BME280** -> https://www.wiki.lesfabriquesduponant.net/index.php?title=Capteur_BME280#Comment_distinguer_BME280_et_BMP280_.3F

**5V vs 3.3V** -> https://www.wiki.lesfabriquesduponant.net/index.php?title=Capteur_BME280#Connecter_BME_280_.C3.A0_l.27arduino

**J'ai un BME280 5V :**

Connexion BME -> ESP

^ BME280 ^ ESP32 |
| VCC    | 5V    |
| GND    | GND   |
| SDA    | GPIO21|
| SCL    | GPIO22|

  * Sketch > Include Library > Manage Libraries > adafuit bme280
  * (Sketch > Include Library > Manage Libraries > adafuit unified sensor)
  * File > Examples > Adafruit BME280 library > bme280test
  * Comment lines (ligne 20) ''#include <SPI.h>'' et de ''/*#define BME_SCK 13'' à ''#define BME_CS 10*/'' (line 24 à 27)
  * Ajouter 0x76 (ligne 46) -> ''status = bme.begin(0x76);''


=== Code ===

<code c>

#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>

Adafruit_BME280 bme; // I2C

void setup() {
    Serial.begin(115200);
    while(!Serial);    // time to get serial running

    unsigned status;
    
    status = bme.begin(0x76);  
    if (!status) {
        Serial.println("Could not find a valid BME280 sensor, check wiring, address, sensor ID!");
        Serial.print("SensorID was: 0x"); Serial.println(bme.sensorID(),16);
        Serial.print("        ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
        Serial.print("   ID of 0x56-0x58 represents a BMP 280,\n");
        Serial.print("        ID of 0x60 represents a BME 280.\n");
        Serial.print("        ID of 0x61 represents a BME 680.\n");
        while (1) delay(10);
    }
    Serial.println();
}


void loop() { 
    printValues();
    delay(1000);
}


void printValues() {
    Serial.print("Temperature = ");
    Serial.print(bme.readTemperature());
    Serial.println(" °C");

    Serial.print("Pressure = ");
    Serial.print(bme.readPressure() / 100.0F);
    Serial.println(" hPa");

    Serial.print("Humidity = ");
    Serial.print(bme.readHumidity());
    Serial.println(" %");

    Serial.println();
}

</code>