B4R Code Snippet BME280 - well known sensor: thermometer, barometer, hygrometer, altimeter

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 600
#End Region

Sub Process_Globals
    Public Serial1 As Serial
End Sub

Private Sub AppStart
    Serial1.Initialize(115200)
    Log("AppStart")
    esp_bme280.Start_BME280
End Sub

'module name 'esp_bme280'
'Library https://github.com/DFRobot/DFRobot_BME280
'default i2c-address = 0x76 in the Inline-C code

Private Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'Public variables can be accessed from all modules.
   
    Public TEMPERATURE, PRESSURE, HUMIDITY, ALTITUDE As Double    'degrees C, Pa, % (RH), meters
    Private Timer1 As Timer
    Dim Ready_flag As Boolean
End Sub

Sub Start_BME280
    Log("Start reading BME280...")
    Dim res As Byte = RunNative("setup_bme280",Null)
   
    If res > 0 Then
        Timer1.Initialize("Timer1_Tick", 2000)
        Timer1.Enabled = True
    Else
        Log("BME280 - prepare error.")
    End If
End Sub

Sub Stop
    Timer1.Enabled = False
    Log("BME280 stopped")
End Sub

Private Sub Timer1_Tick
    RunNative("read_bme280",Null)
    Log("Temp=", (TEMPERATURE), "; Pressure=", PRESSURE, "; Hum=", HUMIDITY)
    Ready_flag = True
End Sub

#if C
#include <Wire.h>
#include "DFRobot_BME280.h"

typedef DFRobot_BME280_IIC    BME;    // ******** use abbreviations instead of full names ********

/**IIC address is 0x77 when pin SDO is high */
/**IIC address is 0x76 when pin SDO is low */
BME   bme(&Wire, 0x76);   // select TwoWire peripheral and set sensor address

#define SEA_LEVEL_PRESSURE    1015.0f

B4R::Object returnvalue_bme280;

B4R::Object* setup_bme280(B4R::Object* o){
  if (bme.begin() != BME::eStatusOK) {
      return returnvalue_bme280.wrapNumber(0);
  }
  return returnvalue_bme280.wrapNumber(1);
}

void read_bme280 (B4R::Object* o) {
  float   temp = bme.getTemperature();
  uint32_t    press = bme.getPressure();
  float   humi = bme.getHumidity();
  float   alti = bme.calAltitude(SEA_LEVEL_PRESSURE, press);
    b4r_esp_bme280::_temperature = temp;
    b4r_esp_bme280::_pressure = press;
    b4r_esp_bme280::_humidity = humi;
    b4r_esp_bme280::_altitude = alti;
}

#End if

Dim p As Float = esp_bme280.PRESSURE / 133.32    'mmhg