temp

.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+    "files.associations": {
+        "condition_variable": "cpp",
+        "future": "cpp"
+    }
+}

CMakeLists.txt

@@ -4,8 +4,11 @@ project(led_control)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-# 设置头文件目录
+# 包含头文件目录
-include_directories(include)
+include_directories(${CMAKE_SOURCE_DIR}/include)
+
+# 库文件目录
+link_directories(${CMAKE_SOURCE_DIR}/lib)
 
 # 查找src目录下所有cpp文件
 file(GLOB SOURCES "src/*.cpp")
@@ -13,8 +16,21 @@ file(GLOB SOURCES "src/*.cpp")
 # 生成可执行文件
 add_executable(led_app ${SOURCES})
 
-# 链接需要的库，示例链接pthread和toml11（假设toml11是头文件库，不用链接）
+# 链接需要的库
 find_package(Threads REQUIRED)
 target_link_libraries(led_app PRIVATE Threads::Threads)
 
+# 连接 paho mqtt 和依赖库
+target_link_libraries(led_app
+    paho-mqttpp3
+    paho-mqtt3as
+    ssl
+    crypto
+)
+
+# 运行时动态库路径设置
+set_target_properties(led_app PROPERTIES
+    BUILD_RPATH ${CMAKE_SOURCE_DIR}/lib
+)
+
 # 如果你toml11是以静态库形式存在，或有其他依赖库，记得这里添加

config/config.toml

@@ -1,3 +1,9 @@
 [serial]
 port = "/dev/ttyS0"
 baudrate = 115200
+[mqtt]
+host = "192.168.4.196:11883"
+username = "zxwl"
+password = "zxwl1234@"
+topic = "/zxwl/vehicle/V060001/info"
+qos = 1

include/LedMqttSubscriber.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <string>
+#include <mqtt/async_client.h>
+
+class MqttClient
+{
+public:
+    MqttClient(const std::string &configPath);
+    bool start();
+
+private:
+    std::string broker;
+    std::string clientId;
+    std::string username;
+    std::string password;
+    std::string topic;
+    int qos;
+
+    class Callback : public virtual mqtt::callback
+    {
+    public:
+        void message_arrived(mqtt::const_message_ptr msg) override;
+    };
+
+    mqtt::async_client *client = nullptr;
+    mqtt::connect_options connOpts;
+    Callback callback;
+};

src/LedMqttSubscriber.cpp

@@ -0,0 +1,71 @@
+#include "LedMqttSubscriber.h"
+#include "toml.hpp"
+#include <iostream>
+#include <random>
+#include <chrono>
+#include <sstream>
+
+// 生成随机clientId辅助函数
+std::string generateRandomClientId(const std::string &prefix = "client_")
+{
+    // 用时间戳+随机数生成一个简单的唯一字符串
+    auto now = std::chrono::system_clock::now().time_since_epoch().count();
+
+    std::random_device rd;
+    std::mt19937 gen(rd());
+    std::uniform_int_distribution<> dis(1000, 9999);
+
+    std::stringstream ss;
+    ss << prefix << now << "_" << dis(gen);
+    return ss.str();
+}
+
+MqttClient::MqttClient(const std::string &configPath)
+{
+    try
+    {
+        auto data = toml::parse(configPath);
+        auto mqttConfig = toml::find(data, "mqtt");
+
+        broker = toml::find<std::string>(mqttConfig, "host");
+        clientId = generateRandomClientId();
+        username = toml::find_or<std::string>(mqttConfig, "username", "");
+        password = toml::find_or<std::string>(mqttConfig, "password", "");
+        topic = toml::find<std::string>(mqttConfig, "topic");
+        qos = toml::find_or<int>(mqttConfig, "qos", 1);
+
+        client = new mqtt::async_client(broker, clientId);
+        connOpts.set_clean_session(true);
+        if (!username.empty())
+            connOpts.set_user_name(username);
+        if (!password.empty())
+            connOpts.set_password(password);
+
+        client->set_callback(callback);
+    }
+    catch (const std::exception &e)
+    {
+        std::cerr << "加载 MQTT 配置失败: " << e.what() << std::endl;
+    }
+}
+
+bool MqttClient::start()
+{
+    try
+    {
+        client->connect(connOpts)->wait();
+        client->subscribe(topic, qos)->wait();
+        std::cout << "已订阅主题：" << topic << std::endl;
+        return true;
+    }
+    catch (const mqtt::exception &e)
+    {
+        std::cerr << "MQTT 启动失败: " << e.what() << std::endl;
+        return false;
+    }
+}
+
+void MqttClient::Callback::message_arrived(mqtt::const_message_ptr msg)
+{
+    std::cout << "接收到消息: " << msg->to_string() << std::endl;
+}