ESP32 Forum

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

#define BME_SCK 18
#define BME_MISO 19
#define BME_MOSI 23
#define BME_CS 5

Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK);

void setup() {
  Serial.begin(115200);
  Serial.println("BME280 test on ESP32 via SPI");

  if (!bme.begin()) {
    Serial.println("Error! BME280 sensor not found.");
    while (1);
  }

  Serial.println("BME280 ok!");
}

void loop() {
  float temperature = bme.readTemperature();
  float pressure = bme.readPressure() / 100.0F; // hPa convertion
  float humidity = bme.readHumidity();

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  Serial.print("Pressure: ");
  Serial.print(pressure);
  Serial.println(" hPa");

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  Serial.println("--------------------");

  delay(2000); // Wait 2 seconds
}

Code: Select all

/*!
 *   @brief  class constructor if using hardware SPI
 *   @param  cspin the chip select pin to use
 *   @param  *theSPI
 *           optional SPI object
 */
Adafruit_BME280::Adafruit_BME280(int8_t cspin, SPIClass *theSPI) {
  spi_dev = new Adafruit_SPIDevice(cspin, 1000000, SPI_BITORDER_MSBFIRST,
                                   SPI_MODE0, theSPI);
}