nanoFramework.Iot.Device.Bmp180 1.2.613

BMP180 - 气压、海拔和温度传感器

BMP180是一种读取气压、海拔和温度的设备。可以使用I2C与该设备通信。

文档

BMP180数据表。

使用方法

重要：在创建I2cDevice之前，请确保您正确设置了I2C引脚，特别是对于ESP32之前，确保您已安装nanoFramework.Hardware.ESP32 nuget。

//////////////////////////////////////////////////////////////////////
// when connecting to an ESP32 device, need to configure the I2C GPIOs
// used for the bus
Configuration.SetPinFunction(21, DeviceFunction.I2C1_DATA);
Configuration.SetPinFunction(22, DeviceFunction.I2C1_CLOCK);

对于STM32等其他设备，请确保您正在使用所需的I2C总线的预设引脚。

如何使用该设备绑定的示例可在示例文件夹中找到。

// bus id on the MCU
const int busId = 1;

I2cConnectionSettings i2cSettings = new(busId, Bmp180.DefaultI2cAddress);
using I2cDevice i2cDevice = I2cDevice.Create(i2cSettings);

using Bmp180 i2cBmp280 = new(i2cDevice);
// set samplings
i2cBmp280.SetSampling(Sampling.Standard);

// read values
Temperature tempValue = i2cBmp280.ReadTemperature();
Debug.WriteLine($"Temperature: {tempValue.DegreesCelsius:0.#}\u00B0C");
Pressure preValue = i2cBmp280.ReadPressure();
Debug.WriteLine($"Pressure: {preValue.Hectopascals:0.##}hPa");

// Note that if you already have the pressure value and the temperature, you could also calculate altitude by
// calling WeatherHelper.CalculateAltitude(preValue, Pressure.MeanSeaLevel, tempValue) which would be more performant.
Length altValue = i2cBmp280.ReadAltitude(WeatherHelper.MeanSeaLevel);

Debug.WriteLine($"Altitude: {altValue:0.##}m");
Thread.Sleep(1000);

// set higher sampling
i2cBmp280.SetSampling(Sampling.UltraLowPower);

// read values
tempValue = i2cBmp280.ReadTemperature();
Debug.WriteLine($"Temperature: {tempValue.DegreesCelsius:0.#}\u00B0C");
preValue = i2cBmp280.ReadPressure();
Debug.WriteLine($"Pressure: {preValue.Hectopascals:0.##}hPa");

// Note that if you already have the pressure value and the temperature, you could also calculate altitude by
// calling WeatherHelper.CalculateAltitude(preValue, Pressure.MeanSeaLevel, tempValue) which would be more performant.
altValue = i2cBmp280.ReadAltitude(WeatherHelper.MeanSeaLevel);
Debug.WriteLine($"Altitude: {altValue:0.##}m");

以下fritzing图示展示了如何使用I2C将BMP180与ESP32等MCU连接的一种方式。