M5Stack Core2: 温度湿度センサーを使う

M5Stack Core2 で Grove の温度湿度センサーを使う方法です。
Port A に Grove を挿します。

temperature_humidity/temperature_humidity.ino

// ---------------------------------------------------------------
/*
	temperature_humidity.ino

						Sep/01/2021
*/
// ---------------------------------------------------------------
# include <M5Core2.h>
# include "DHT.h"

# define DHTTYPE DHT22
# define DHTPIN 33 
DHT dht(DHTPIN, DHTTYPE);

int count = 0;
// ---------------------------------------------------------------
void setup()
{
	M5.begin(true, true, true, false);
	M5.Lcd.setTextSize(4);
	M5.Lcd.println("Temperature");
	M5.Lcd.println("Humidity");

	while (!Serial);
	M5.lcd.setBrightness(80);

	Serial.println("Sep/01/2021 AM 10:00 ***");
}

// ---------------------------------------------------------------
void display_proc(float temp_hum[])
{
	Serial.print("temperature = ");
	Serial.print(temp_hum[1]);
	Serial.print(" C  ");
	Serial.print("humidity = ");
	Serial.print(temp_hum[0]);
	Serial.println(" %");

	M5.Lcd.setTextSize(4);
	M5.Lcd.setCursor(50,100);
	M5.Lcd.print(temp_hum[1]);
	M5.Lcd.println(" C");
  
	M5.Lcd.setCursor(50,160);
	M5.Lcd.print(temp_hum[0]);
	M5.Lcd.println(" %");
}

// ---------------------------------------------------------------
void loop()
{
	float temp_hum[2] = {0,0};

	Serial.print("count = " + String(count) + "  ");

	if (!dht.readTempAndHumidity(temp_hum))
		{
		display_proc(temp_hum);
		}
	else
		{
		Serial.println("ERROR! *** readTempAndHumidity ***");
		}

	delay(5000);

	count++;
}

// ---------------------------------------------------------------