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libraries/M5Unit-ENV/examples/Unit_ENVIV_M5Core2/Unit_ENVIV_M5Core2.ino

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+/*
+*******************************************************************************
+* Copyright (c) 2023 by M5Stack
+*                  Equipped with M5Core2 sample source code
+*                          配套  M5Core2 示例源代码
+* Visit to get information: https://docs.m5stack.com/en/unit/ENV%E2%85%A3%20Unit
+* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/unit/ENV%E2%85%A3%20Unit
+*
+* Product: ENVIV_SHT40_BMP280.  环境传感器
+* Date: 2023/8/24
+*******************************************************************************
+  Please connect to Port,Read temperature, humidity and atmospheric pressure and
+  display them on the display screen
+  请连接端口,读取温度、湿度和大气压强并在显示屏上显示
+    Libraries:
+  - [Adafruit_BMP280](https://github.com/adafruit/Adafruit_BMP280_Library)
+  - [Adafruit_Sensor](https://github.com/adafruit/Adafruit_Sensor)
+  - [SensirionI2CSht4x](https://github.com/Tinyu-Zhao/arduino-i2c-sht4x)
+*/
+#include <M5Core2.h>
+#include <SensirionI2CSht4x.h>
+#include <Adafruit_BMP280.h>
+#include "Adafruit_Sensor.h"
+
+// 初始化传感器
+Adafruit_BMP280 bmp;
+
+SensirionI2CSht4x sht4x;
+float temperature, pressure,
+    humidity; // Store the vuale of pressure and Temperature.  存储压力和温度
+
+void setup()
+{
+    // 初始化传感器
+    M5.begin();
+    M5.Lcd.setTextSize(2);
+    Wire.begin(); // SDA = 16, SCL = 34
+    Serial.begin(115200);
+    while (!Serial)
+    {
+        delay(100);
+    }
+    while (!bmp.begin(
+        0x76))
+    { // Init this sensor,True if the init was successful, otherwise
+      // false.   初始化传感器,如果初始化成功返回1
+        M5.Lcd.println("Could not find a valid BMP280 sensor, check wiring!");
+        Serial.println(F("BMP280 fail"));
+    }
+    M5.Lcd.clear(); // Clear the screen.  清屏
+    Serial.println(F("BMP280 test"));
+
+    uint16_t error;
+    char errorMessage[256];
+
+    sht4x.begin(Wire);
+
+    uint32_t serialNumber;
+    error = sht4x.serialNumber(serialNumber);
+    if (error)
+    {
+        Serial.print("Error trying to execute serialNumber(): ");
+        errorToString(error, errorMessage, 256);
+        Serial.println(errorMessage);
+    }
+    else
+    {
+        Serial.print("Serial Number: ");
+        Serial.println(serialNumber);
+    }
+
+    // 设置传感器的采样率和滤波器
+    bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,     // 模式：正常
+                    Adafruit_BMP280::SAMPLING_X2,     // 温度采样率：2倍
+                    Adafruit_BMP280::SAMPLING_X16,    // 压力采样率：16倍
+                    Adafruit_BMP280::FILTER_X16,      // 滤波器：16倍
+                    Adafruit_BMP280::STANDBY_MS_500); // 等待时间：500毫秒
+}
+
+void loop()
+{
+    uint16_t error;
+    char errorMessage[256];
+
+    delay(1000);
+
+    error = sht4x.measureHighPrecision(temperature, humidity);
+    if (error)
+    {
+        Serial.print("Error trying to execute measureHighPrecision(): ");
+        errorToString(error, errorMessage, 256);
+        Serial.println(errorMessage);
+    }
+    else
+    {
+        Serial.print("Temperature:");
+        Serial.print(temperature);
+        Serial.print("\t");
+        Serial.print("Humidity:");
+        Serial.println(humidity);
+    }
+    pressure = bmp.readPressure();
+    M5.Lcd.setCursor(0, 0); // 将光标设置在(0 ,0).  Set the cursor to (0,0)
+    M5.Lcd.printf("Pressure:%2.0fPa\nTemperature:%2.0f^C", pressure,
+                  temperature);
+    M5.Lcd.setCursor(0, 40);
+    M5.Lcd.print("humidity:");
+    M5.Lcd.print(humidity);
+    M5.Lcd.print("%");
+    delay(100);
+}