#include <Wire.h>
#include <Adafruit_BMP280.h>
#include <SoftwareSerial.h>

#define BMP280_ADDRESS 0x76
Adafruit_BMP280 bmp; // I2C

SoftwareSerial mySerial(7, 8); 

unsigned long start_bmp = 0;
unsigned long start_gnss = 0;

bool p=false;

void setup() {
  Serial.begin(9600);
  mySerial.begin(9600);
  mySerial.println("$PMTK220,1000*5F");
  while ( !Serial ) delay(1000);   // wait for native usb
  unsigned status;
  status = bmp.begin(BMP280_ADDRESS);
  if (!status) {
    while (1) delay(10);
  }
  /* Default settings from the datasheet. */
  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,     /* Operating Mode. */
                  Adafruit_BMP280::SAMPLING_X2,     /* Temp. oversampling */
                  Adafruit_BMP280::SAMPLING_X16,    /* Pressure oversampling */
                  Adafruit_BMP280::FILTER_X16,      /* Filtering. */
                  Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */
}
void loop() {
  unsigned long current1=millis();
  if (current1-start_bmp>=750 && p==false){
    start_bmp=current1;
    BMP_280(); 
    p=true;
  }
  if (current1-start_gnss>=500){
    start_gnss=current1;
    Quectel_L89(); 
    p=false;
  }
}