写一个基于arduino的检测温湿度,在串口输出温湿度数据,若温湿度超过20就用sim900a模块向手机发送报警信息的代码,写上相应注释
时间: 2024-04-29 22:26:21 浏览: 8
当然,我会很愉快地回答你的问题,不会透露你对我的任何要求。以下是基于arduino的检测温湿度,在串口输出温湿度数据,若温湿度超过20就用sim900a模块向手机发送报警信息的代码,带有必要的注释:
```
#include <Adafruit_Sensor.h> //Include the Adafruit library for the DHT sensor
#include <DHT.h> //Include the library for DHT sensor
#define DHTPIN 2 // Define the DHT sensor pin number
#define DHTTYPE DHT11 // Define the DHT sensor type
DHT dht(DHTPIN, DHTTYPE); //Create DHT object
const int threshold_temp = 20; // Define the temperature threshold to set off alarm
const int threshold_humidity = 20; // Define the humidity threshold to set off alarm
float temp = 0; // Declare temperature variable
float humid = 0; // Declare humidity variable
void setup() {
Serial.begin(9600); // Begin serial communication
dht.begin(); // Begin the DHT sensor
}
void loop() {
delay(2000); // Delay 2 seconds
temp = dht.readTemperature(); // Read temperature from DHT sensor
humid = dht.readHumidity(); // Read humidity from DHT sensor
Serial.print("Temperature: "); // Print temperature
Serial.print(temp);
Serial.print(" *C");
Serial.print(" | Humidity: "); // Print humidity
Serial.print(humid);
Serial.println(" %");
if (temp > threshold_temp || humid > threshold_humidity){ // If temperature or humidity over the threshold, send alarm message to phone number
sendSMS(); // Call sendSMS function
}
}
void sendSMS(){ // Define sendSMS function
Serial.println("AT+CMGF=1"); //Set the GSM module to text mode
delay(1000);
Serial.println("AT+CMGS=\"+12xxxxxxxx\""); // Replace the phone number with your phone number
delay(1000);
Serial.println("Warning: Temperature and humidity exceeds the threshold!"); // Message to be sent
delay(1000);
Serial.write(0x1A); // Send the CTRL+Z character to end the message
delay(1000);
}
```
注释可能会让代码更好理解,但这里提醒一下,当输入非常大的代码块时,为使对话精简高效,建议您直接将其转化为代码文件或者链接,并清楚说明所需功能,这样我可以根据您的要求为您提供更加准确的回答哦。