Arduino 使用教程

库安装

1. 启动 Arduino IDE
2. 打开库管理器：Sketch ➔ Include Library ➔ Manage Libraries...
3. 在 Filter your search... 字段中搜索 Sensirion I2C SHT3X 库，然后点击 install 按钮进行安装。

接线图

（此处可插入接线图图片）

Example

单次测量温湿度模式

单次测量模式：控制板发送一次采集命令，传感器采集一次数据。此模式可根据需要读取数据，功耗较低。

#include <Arduino.h>
#include <SensirionI2cSht3x.h>
#include <Wire.h>

SensirionI2cSht3x sensor;

static char errorMessage[64];
static int16_t error;

void setup() {

    Serial.begin(115200);
    while (!Serial) {
        delay(100);
    }
    Wire.begin();
    sensor.begin(Wire, SHT30_I2C_ADDR_44);

    sensor.stopMeasurement();
    delay(1);
    sensor.softReset();
    delay(100);
    uint16_t aStatusRegister = 0u;
    error = sensor.readStatusRegister(aStatusRegister);
    if (error != NO_ERROR) {
        Serial.print("Error trying to execute readStatusRegister(): ");
        errorToString(error, errorMessage, sizeof errorMessage);
        Serial.println(errorMessage);
        return;
    }
    Serial.print("aStatusRegister: ");
    Serial.print(aStatusRegister);
    Serial.println();
}

void loop() {

    float aTemperature = 0.0;
    float aHumidity = 0.0;
    error = sensor.measureSingleShot(REPEATABILITY_MEDIUM, false, aTemperature,
                                     aHumidity);
    if (error != NO_ERROR) {
        Serial.print("Error trying to execute measureSingleShot(): ");
        errorToString(error, errorMessage, sizeof errorMessage);
        Serial.println(errorMessage);
        return;
    }
    Serial.print("aTemperature: ");
    Serial.print(aTemperature);
    Serial.print("\t");
    Serial.print("aHumidity: ");
    Serial.print(aHumidity);
    Serial.println();
}

结果：串口打印出获取到的温湿度数据。

周期测量温湿度模式

周期测量模式：传感器按照设定采集频率自动采集数据。

#include <Arduino.h>
#include <SensirionI2cSht3x.h>
#include <Wire.h>

SensirionI2cSht3x sensor;

static char errorMessage[64];
static int16_t error;

void setup() {

    Serial.begin(115200);
    while (!Serial) {
        delay(100);
    }
    Wire.begin();
    sensor.begin(Wire, SHT30_I2C_ADDR_44);

    sensor.stopMeasurement();
    delay(1);
    sensor.softReset();
    delay(100);
    uint16_t aStatusRegister = 0u;
    error = sensor.readStatusRegister(aStatusRegister);
    if (error != NO_ERROR) {
        Serial.print("Error trying to execute readStatusRegister(): ");
        errorToString(error, errorMessage, sizeof errorMessage);
        Serial.println(errorMessage);
        return;
    }
    Serial.print("aStatusRegister: ");
    Serial.print(aStatusRegister);
    Serial.println();
    error = sensor.startPeriodicMeasurement(REPEATABILITY_MEDIUM,
                                            MPS_ONE_PER_SECOND);
    if (error != NO_ERROR) {
        Serial.print("Error trying to execute startPeriodicMeasurement(): ");
        errorToString(error, errorMessage, sizeof errorMessage);
        Serial.println(errorMessage);
        return;
    }
}

void loop() {

    float aTemperature = 0.0;
    float aHumidity = 0.0;
    error = sensor.blockingReadMeasurement(aTemperature, aHumidity);
    if (error != NO_ERROR) {
        Serial.print("Error trying to execute blockingReadMeasurement(): ");
        errorToString(error, errorMessage, sizeof errorMessage);
        Serial.println(errorMessage);
        return;
    }
    Serial.print("aTemperature: ");
    Serial.print(aTemperature);
    Serial.print("\t");
    Serial.print("aHumidity: ");
    Serial.print(aHumidity);
    Serial.println();
}

结果：串口前10S打印周期测量模式下获取的温湿度数据，10S后退出周期测量模式，进入单次测量模式，打印单次测量模式下获取的温湿度数据。