esp8266根据httpserver状态，调用网络唤醒，实现一键开机

一.开发板程序

#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <WiFiUdp.h>
#include <ArduinoJson.h>// 替换为你的WiFi信息
const char* ssid = "wifiname";
const char* password = "password";void setup() {Serial.begin(115200);WiFi.begin(ssid, password);while (WiFi.status() != WL_CONNECTED) {delay(500);Serial.print("WiFi not connected");}Serial.println("");Serial.println("WiFi connected");Serial.print("IP address: ");Serial.println(WiFi.localIP());//ticker.attach(10, checkFlag);// ticker.attach(10, test);
}
void loop() {checkFlag();delay(10000); //每10秒调用一次
}void test() {Serial.println("fx call successd");
}void wakeUpComputer() {WiFiUDP udp;udp.begin(9); // WOL通常使用端口9byte mac[6] = { 0x77, 0x77, 0x77, 0x77, 0x77, 0x77 }; // 你的计算机的MAC地址byte packet[102];memset(packet, 0xFF, 6); // 填充前6个字节为0xFFfor (int i = 6; i < 102; i += 6) {memcpy(packet + i, mac, 6); // 复制MAC地址到packet}udp.beginPacket("255.255.255.255", 9); // 广播地址和端口号udp.write(packet, 102);udp.endPacket();Serial.println("Magic Packet Sent!");
}void checkFlag() {Serial.println("start checkflag");if (WiFi.status() == WL_CONNECTED) {HTTPClient http;WiFiClient client;http.begin(client, "http://192.168.1.1:4050/api/endpoint"); //服务端apiint httpCode = http.GET();Serial.println(httpCode);if (httpCode > 0) {Serial.println("HTTP GET OK");String payload = http.getString();DynamicJsonDocument doc(1024);deserializeJson(doc, payload);String flag = doc["flag"];String additionalInfo = doc["additional_info"];if (flag == "wake") {Serial.println("start wakeup");wakeUpComputer();} else {Serial.println("HTTP GET not wakeup");}} else {Serial.println("HTTP GET failed");}http.end();}
}

二. 服务端

#!/usr/bin/python
from flask import Flask, jsonify, request
app = Flask(__name__)
# 默认flag值
flag_data = {"flag": "idle","additional_info": ""
}
@app.route('/api/endpoint', methods=['GET'])
def get_flag():"""返回当前flag值和附加信息"""return jsonify(flag_data)
@app.route('/api/update_flag', methods=['POST'])
def update_flag():"""更新flag值和附加信息"""global flag_datadata = request.jsonif 'flag' in data:flag_data['flag'] = data['flag']if 'additional_info' in data:flag_data['additional_info'] = data['additional_info']return jsonify(flag_data), 200
if __name__ == '__main__':# 运行Flask应用，绑定到所有IP地址，端口4050app.run(host='0.0.0.0', port=4050)

三.服务端状态变更

curl http://192.168.1.1:4050/api/endpoint
curl -X POST http://192.168.1.1:4050/api/update_flag -H "Content-Type: application/json" -d '{"flag": "wake", "additional_info": "some info"}'
curl -X POST http://192.168.1.1:4050/api/update_flag -H "Content-Type: application/json" -d '{"flag": "idle", "additional_info": "some info"}'