ESP32_BMP280_withdisplay.ino

ESP32_BMP280_withdisplay.ino

/*
  Florin Simedru
  Complete project details at https://automatic-house.blogspot.com
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files.
  
  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
*/

#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#include <Adafruit_ST7735.h>
#include <Adafruit_GFX.h>

// These pins will also work for the 1.8" TFT shield
#define TFT_MOSI 23  // SDA Pin on ESP32
#define TFT_SCLK 18  // SCL Pin on ESP32
#define TFT_CS   5  // Chip select control pin
#define TFT_DC    2  // Data Command control pin
#define TFT_RST   4  // Reset pin (could connect to RST pin)
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 160 // OLED display height, in pixels
/* TFT ST7735 configuration */
Adafruit_ST7735 display = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);

#define SEALEVELPRESSURE_HPA (1013.25)
void printValues();
void PrintInfoServer();
Adafruit_BME280 bme; // I2C

unsigned long delayTime;
unsigned long previousMillis = 0;
const long interval = 1000; 

void setup() {
    Serial.begin(115200);
    while(!Serial);    // time to get serial running
    Serial.println(F("BME280 test"));

    unsigned status;
    
    // default settings
    status = bme.begin();  
    // You can also pass in a Wire library object like &Wire2
     status = bme.begin(0x76);
    if (!status) {
        Serial.println("Could not find a valid BME280 sensor, check wiring, address, sensor ID!");
        Serial.print("SensorID was: 0x"); Serial.println(bme.sensorID(),16);
        Serial.print("        ID of 0xFF probably means a bad address, a BMP 180 or BMP 085\n");
        Serial.print("   ID of 0x56-0x58 represents a BMP 280,\n");
        Serial.print("        ID of 0x60 represents a BME 280.\n");
        Serial.print("        ID of 0x61 represents a BME 680.\n");
        while (1) delay(10);
    }
    
    Serial.println("-- Default Test --");
    delayTime = 1000;
  // Use this initializer if you're using a 1.8" TFT
  display.initR(INITR_GREENTAB);    // Init ST7735 display 128x160 pixel
  delay(100);
  display.fillScreen(ST77XX_RED);
  delay(100);
  display.fillScreen(ST77XX_GREEN);
  delay(100);
  display.fillScreen(ST77XX_BLUE);
  delay(100);
  display.fillScreen(ST77XX_BLACK);
 
  display.setTextSize(1);
  display.setTextColor(ST77XX_WHITE);
  display.setCursor(0, 0);

  display.setRotation(3);
  display.fillScreen(ST77XX_BLACK);
  display.setTextSize(1);
  display.setCursor(10, 10);
  display.print(" ST7735 TFT display initiated!");
    Serial.println();
}


void loop() { 
    printValues();
    delay(delayTime);
    PrintInfoServer();
}


void printValues() {
    Serial.print("Temperature = ");
    Serial.print(bme.readTemperature());
    Serial.println(" °C");

    Serial.print("Pressure = ");

    Serial.print(bme.readPressure() / 100.0F);
    Serial.println(" hPa");

    Serial.print("Approx. Altitude = ");
    Serial.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
    Serial.println(" m");

    Serial.print("Humidity = ");
    Serial.print(bme.readHumidity());
    Serial.println(" %");

    Serial.println();
}


void PrintInfoServer() {
  unsigned long currentMillis = millis();
  
  if((currentMillis - previousMillis) >= interval) {
      previousMillis = millis(); 
    #if (DHT_DEBUG==1)  
      Serial.println("Temperature: " + temperature + " *C - Humidity: " + humidity + " % - Pressure: " + pressure + " hPa");
    #endif  
      display.fillScreen(ST77XX_BLACK);
      
      // display temperature
      display.setTextSize(1);
      display.setTextColor(ST77XX_WHITE);
      display.setCursor(10,10);
      display.print("Temperature: ");
      display.print(bme.readTemperature());
      display.print(" ");
      display.setTextSize(1);
      display.write(248);
      display.setTextSize(1);
      display.print(" C");
      
      // display humidity
      display.setTextSize(1);
      display.setCursor(10, 20);
      display.print("Humidity: ");
      display.print(bme.readHumidity());
      display.print(" %"); 
      
      // display altitude
      display.setTextSize(1);
      display.setCursor(10, 30);
      display.print("Altitude:");
      display.print( bme.readAltitude(SEALEVELPRESSURE_HPA));
      display.print(" m");

      // display pressure
      display.setTextSize(1);
      display.setTextColor(ST77XX_WHITE);
      display.setCursor(10,40);
      display.print("Pressure: ");
      display.print(bme.readPressure() / 100.0F);
      display.print(" hPa");

      display.setTextSize(1);
      display.setTextColor(ST77XX_GREEN);
      display.setCursor(10,50);
      
  }
}