Compilation questions

Projects General Guidance
9 
#include <Wire.h>     
#include <SPI.h>      //SPI Bus Library

#include <Adafruit_Sensor.h>  
#include <Adafruit_BMP280.h>      //BMP280 Library

/*Define BMP280 pins*/
#define BMP_SCK 13   //SCL pin 
#define BMP_MISO 10   //SDO pin
#define BMP_MOSI 12   //SDA pin
#define BMP_CS 11     //CSB pin

Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO,  BMP_SCK);  

/*Sensor initialization detection*/
void setup() {
  Serial.begin(9600);     //Set baud rate
  Serial.println(F("BMP280 sensor initialization detection"));
  Serial.println(F("BMP280 sensor detection success"));
  /*Detection of SPI bus communication*/
  if (!bmp.begin()) {  
    Serial.println(F("BMP280 sensor initialization failed"));
    while (1);
  }
}

void loop() {
    Serial.print(F("current temperature："));
    Serial.print(bmp.readTemperature());
    Serial.println(" *C");    
    Serial.print(F("Current air pressure value = "));
    Serial.print(bmp.readPressure());
    Serial.println(" Pa");
    Serial.print(F("Current altitude = "));
    Serial.print(bmp.readAltitude(1013.25));
    Serial.println(" M");   
    delay(800);     //Time delay detection
}