気圧・温度センサーBMP280のサンプルプログラムの紹介です。

ハードウェア

・Freenove ESP32-S3-WROOM Board or Espressif ESP32-S3-DevKitC
・Adafruit Pressure Sensor BMP280

配線

導入パッケージ

・nanoFramework.Hardware.Esp32
・nanoFramework.System.Device.I2c
・nanoFramework.Iot.Device.Bmxx80

プログラミング

Program.cs

using Iot.Device.Bmxx80;
using nanoFramework.Hardware.Esp32;
using System;
using System.Device.I2c;
using System.Threading;

namespace ESP32S3_BMP280
{
    public class Program
    {
        public static void Main()
        {
            Configuration.SetPinFunction(8, DeviceFunction.I2C1_DATA);
            Configuration.SetPinFunction(9, DeviceFunction.I2C1_CLOCK);

            I2cConnectionSettings settings = new(1, 0x76, I2cBusSpeed.FastMode);
            I2cDevice device = I2cDevice.Create(settings);
            using var bmp280 = new Bmp280(device);

            while (true)
            {
                bmp280.TemperatureSampling = Sampling.HighResolution;
                bmp280.PressureSampling = Sampling.HighResolution;
                var readResult = bmp280.Read();

                Console.WriteLine($"Temp: {readResult.Temperature.DegreesCelsius.ToString("F2")}℃, Pres: {readResult.Pressure.Hectopascals.ToString("F2")} hPs");

                Thread.Sleep(1000);
            }
        }
    }
}