Example Code for Arduino-SPI Continuous Data Reading

Hardware Preparation

• SEN0667 Fermion: BMP581 Barometric Pressure Sensor × 1
• DFR0654 FireBeetle 2 ESP32-E × 1
• Several Dupont wires

Software Preparation

• Download and install Arduino IDE: Download Link
• Download DFRobot_BMP58X Library: DFRobot_BMP58X Library
• Library Installation Guide: View Installation Tutorial

Wiring Diagram

• Connect the Fermion: BMP581 Barometric Pressure Sensor to the ESP32-E as illustrated, with the key wiring correspondences as follows:
  • Sensor Pin "3V3" → ESP32-E 3.3V
  • Sensor Pin "GND" → ESP32-E GND
  • Sensor SPI Pin "SCK" → ESP32-E SCK (default GPIO18)
  • Sensor SPI Pin "SDI" → ESP32-E MOSI (default GPIO23)
  • Sensor SPI Pin "SDO" → ESP32-E MISO (default GPIO19)
  • Sensor SPI Pin "CSB" → ESP32-E D3 (default GPIO26)

Sample Code

#include "DFRobot_BMP58X.h"
#define BMP5_COMM_SPI
#define CALIBRATE_ABSOLUTE_DIFFERENCE
//Chip Select (CS) pin definition of //SPI communication (can be modified according to actual wiring)
#define BMP5_CS_PIN D3  
DFRobot_BMP58X_SPI bmp58x(&SPI, BMP5_CS_PIN);

void setup() {
  Serial.begin(115200);
  while(!bmp58x.begin()){
    Serial.println("Sensor init fail!");
    delay(1000);
  }
  Serial.println("Sensor init success!");

  //Calibrate absolute error (modify parameters according to actual height)
  #if defined(CALIBRATE_ABSOLUTE_DIFFERENCE)
    /* The example uses an elevation of 540 meters in Wenjiang District, Chengdu. Please use the local elevation instead. */
    bmp58x.calibratedAbsoluteDifference(540.0);
  #endif

  //Set the measurement mode to normal mode.
  bmp58x.setMeasureMode(bmp58x.eNormal);
}

void loop() {
  delay(1000);
 Serial.print("Temperature: ");
  Serial.print(bmp58x.readTempC());
  Serial.println(" °C");
  
  Serial.print("Atmospheric Pressure: ");
  Serial.print(bmp58x.readPressPa());
  Serial.println(" Pa");
  
  Serial.print("Altitude: ");
  Serial.print(bmp58x.readAltitudeM());
  Serial.println(" m");
  Serial.println("=================================");
}

Result