nanoFramework.Iot.Device.Sps30 1.1.613

Sensirion SPS30 尘埃颗粒传感器

这是一个与 Sensirion SPS30 尘埃颗粒传感器交互的库。当前，仅实现了使用 SHDLC 协议的 UART 接口。SPS30 还支持 I2C。

文档

• 该传感器的数据表可以在 此处 找到

UART 接口的用法

重要：在创建 SerialPort 之前，请确保正确设置 ESP32 的 UART 引脚。为此，请确保安装 nanoFramework.Hardware.Esp32 NuGet 并使用 Configuration 类配置引脚

Configuration.SetPinFunction(4, DeviceFunction.COM2_TX);
Configuration.SetPinFunction(15, DeviceFunction.COM2_RX);

初始化 SerialPort，将其包装在 ShdlcProtocol 中，然后传递给 Sps30Sensor

var serial = new SerialPort("COM2", 115200, Parity.None, 8, StopBits.One);
var shdlc = new ShdlcProtocol(serial, timeoutInMillis: 10000);
var sps30 = new Sps30Sensor(shdlc);

使用 sps30 与传感器交互，例如

var version = sps30.ReadVersion();
Debug.WriteLine($"SPS30 detected: {version}");

可靠地收集测量值

try { sps30.StopMeasurement(); } catch { } // In case already measuring from a previous run
sps30.StartMeasurement(MeasurementOutputFormat.Float);
Thread.Sleep(5000); // SPS30 requires some time before it can sample data
var measurement = sps30.ReadMeasuredValues();
Debug.WriteLine($"Measurement: {measurement}");

上述代码将输出以下内容

SPS30 detected: ID=00080000, serial=4E1AD1BB796C64C5, version=Firmware V2.1, Hardware V7, SHDLC V2.0, status=RawRegister: 0, FanSpeedOutOfRange: False, LaserFailure: False, FanFailureBlockedOrBroken: False, cleaninginterval=604800
Measurement: MassConcentration [µg/m³] PM1.0=2.00064229965, PM2.5=5.78215932, PM4.0=8.74958038, PM10.0=9.3430643, NumberConcentration [#/cm³] PM0.5=5.54537582, PM1.0=12.034433364, PM2.5=15.72880268, PM4.0=16.44550895, PM10.0=16.58645629, TypicalParticleSize[nm]=675.40591955

查看示例了解更多信息。