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ESP01-IMAS/src/main.cpp

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+#include <ESP8266WiFi.h>
+#include <ArduinoJson.h>
+
+// Wi-Fi 连接信息
+const char *ssid = "Xiaomi_3A40";
+const char *password = "112233ww";
+
+// 服务器信息
+const char *serverIP = "192.168.31.184";        // 服务器 IP 地址
+const int serverPort = 80;                      // 端口号
+const char *requestPath = "/ESP01/getData.php"; // 请求路径
+
+#define Sleep_Pin 2
+
+void setup()
+{
+  Serial.begin(115200);
+  WiFi.begin(ssid, password);
+
+  // 连接到 Wi-Fi
+  Serial.print("Connecting to Wi-Fi");
+  while (WiFi.status() != WL_CONNECTED)
+  {
+    delay(1000);
+    Serial.print(".");
+  }
+  Serial.println("\nWi-Fi connected!");
+
+  pinMode(Sleep_Pin, OUTPUT);
+  digitalWrite(Sleep_Pin, LOW);
+}
+
+void loop()
+{
+  // 确保 Wi-Fi 连接正常
+  if (WiFi.status() != WL_CONNECTED)
+  {
+    Serial.println("Wi-Fi disconnected, reconnecting...");
+    WiFi.begin(ssid, password);
+    while (WiFi.status() != WL_CONNECTED)
+    {
+      delay(1000);
+      Serial.print(".");
+    }
+    Serial.println("\nReconnected to Wi-Fi!");
+  }
+
+  // 创建客户端
+  WiFiClient client;
+
+  if (client.connect(serverIP, serverPort))
+  {
+    Serial.println("Connected to server");
+
+    // 发送 GET 请求
+    client.println(String("GET ") + requestPath + " HTTP/1.1");
+    client.println(String("Host: ") + serverIP);
+    client.println("Connection: close");
+    client.println();
+
+    // 等待响应
+    while (client.connected() || client.available())
+    {
+      if (client.available())
+      {
+        String line = client.readStringUntil('\n');
+        if (line == "\r")
+        {
+          break; // 头部结束
+        }
+      }
+    }
+
+    // 读取 JSON 数据
+    String jsonData;
+    while (client.available())
+    {
+      jsonData += client.readString();
+    }
+
+    // 打印获取到的 JSON 数据
+    Serial.println("Received JSON:");
+    Serial.println(jsonData);
+
+    // 解析 JSON 数据
+    StaticJsonDocument<512> doc;
+    DeserializationError error = deserializeJson(doc, jsonData);
+    if (error)
+    {
+      Serial.print("Failed to parse JSON: ");
+      Serial.println(error.c_str());
+      return;
+    }
+
+    // 提取 JSON 数据
+    if (doc.containsKey("standby"))
+    {
+      String standby = doc["standby"];
+      Serial.print("Standby mode: ");
+      Serial.println(standby);
+      if (standby == "1")
+      {
+        Serial.println("Standby mode");
+        digitalWrite(Sleep_Pin, HIGH); // 打开休眠模式
+      }
+      else
+      {
+        Serial.println("Normal mode");
+        digitalWrite(Sleep_Pin, LOW); // 关闭休眠模式
+      }
+    }
+    else
+    {
+      Serial.println("Key 'standby' not found in JSON data");
+    }
+  }
+  else
+  {
+    Serial.println("Failed to connect to server");
+  }
+
+  // 延时一段时间再发送下一次请求
+  delay(100);
+}