M5Stack用環境センサユニット ver.2（ENV II）の動作テスト

とりあえず、動いた。

https://www.switch-science.com/catalog/3647/

https://www.switch-science.com/catalog/6344/

M5StackのサンプルコードがENV. IIではなく、旧版のENVのものしかなく、
センサーの種類が違ったので、ちょいと手間取った。


/*
    note: need add library Adafruit_BMP280 & Adafruit_SHT31 from library manage
*/

#include <M5Stack.h>
#include <Adafruit_SHT31.h>
#include <Wire.h> //The SHT31 uses I2C comunication.
#include <Adafruit_Sensor.h>
#include <Adafruit_BMP280.h>

Adafruit_SHT31 sht31 = Adafruit_SHT31();
//DHT12 dht12; //Preset scale CELSIUS and ID 0x5c.
Adafruit_BMP280 bme;

void setup() {
  M5.begin();
  M5.Power.begin();
  Wire.begin();

  M5.Lcd.setBrightness(10);

  Serial.println(F("ENV2 Unit(SHT12 and BMP280) test..."));

  if (! sht31.begin(0x44)) {   // Set to 0x45 for alternate i2c addr
    Serial.println("Couldn't find SHT31");
    while (1) delay(1);
  }

  Serial.print("Heater Enabled State: ");
  if (sht31.isHeaterEnabled())
    Serial.println("ENABLED");
  else
    Serial.println("DISABLED");

  if (! bme.begin(0x76)) {
    Serial.println("Could not find a valid BMP280 sensor, check wiring!");
    M5.Lcd.println("Could not find a valid BMP280 sensor, check wiring!");
    while (1) delay(1);
  }

  M5.Lcd.clear(BLACK);
  M5.Lcd.println("ENV Unit test...");
}

void loop() {

  float tmp = sht31.readTemperature();
  float hum = sht31.readHumidity();
  float pressure = bme.readPressure() /100 ;
  Serial.printf("Temperatura: %2.2f*C  Humedad: %0.2f%%  Pressure: %0.2fhPa\r\n", tmp, hum, pressure);

  M5.Lcd.setCursor(0, 0);
  M5.Lcd.setTextColor(WHITE, BLACK);
  M5.Lcd.setTextSize(3);
  M5.Lcd.printf("Temp: %2.1fC  \r\nHumi: %2.0f%%  \r\nPressure:%2.0fhPa\r\n", tmp, hum, pressure);

  delay(1000);
}