diff --git "a/2025/\347\254\2545\347\273\204(CanMV-K230)/\351\230\256\347\247\213\345\251\225/\344\275\234\344\270\232/Day5/test.c" "b/2025/\347\254\2545\347\273\204(CanMV-K230)/\351\230\256\347\247\213\345\251\225/\344\275\234\344\270\232/Day5/test.c"
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index 0000000000000000000000000000000000000000..d40a911bcb85a1a8771c6ff4aeb9082227009af7
--- /dev/null
+++ "b/2025/\347\254\2545\347\273\204(CanMV-K230)/\351\230\256\347\247\213\345\251\225/\344\275\234\344\270\232/Day5/test.c"
@@ -0,0 +1,104 @@
+
+/*
+ * @Author: jiejie
+ * @Github: https://github.com/jiejieTop
+ * @LastEditTime: 2020-06-17 14:35:29
+ * @Description: the code belongs to jiejie, please keep the author information and source code according to the license.
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <board.h>
+#include "mqttclient.h"
+
+#ifndef KAWAII_MQTT_HOST
+#define KAWAII_MQTT_HOST               "jiejie01.top"
+#endif
+#ifndef KAWAII_MQTT_PORT
+#define KAWAII_MQTT_PORT               "1883"
+#endif
+#ifndef KAWAII_MQTT_CLIENTID
+#define KAWAII_MQTT_CLIENTID           "rtthread001"
+#endif
+#ifndef KAWAII_MQTT_USERNAME
+#define KAWAII_MQTT_USERNAME           "rt-thread"
+#endif
+#ifndef KAWAII_MQTT_PASSWORD
+#define KAWAII_MQTT_PASSWORD           "rt-thread"
+#endif
+#ifndef KAWAII_MQTT_SUBTOPIC
+#define KAWAII_MQTT_SUBTOPIC           "rtt-sub"
+#endif
+#ifndef KAWAII_MQTT_PUBTOPIC
+#define KAWAII_MQTT_PUBTOPIC           "rtt-pub"
+#endif
+
+static void sub_topic_handle1(void* client, message_data_t* msg)
+{
+    mqtt_message_t msg1;
+    (void) client;
+    KAWAII_MQTT_LOG_I("-----------------------------------------------------------------------------------");
+    KAWAII_MQTT_LOG_I("%s:%d %s()...\ntopic: %s\nmessage:%s", __FILE__, __LINE__, __FUNCTION__, msg->topic_name, (char*)msg->message->payload);
+    KAWAII_MQTT_LOG_I("-----------------------------------------------------------------------------------");
+    
+    //响应信息
+    memset(&msg1, 0, sizeof(msg1));
+    msg1.qos = QOS0;
+    msg1.payload = (void *)"辛苦了，下周的比赛加油！"; 
+    mqtt_publish(client, KAWAII_MQTT_PUBTOPIC, &msg1);
+}
+
+static int mqtt_publish_handle1(mqtt_client_t *client)
+{
+    mqtt_message_t msg;
+    memset(&msg, 0, sizeof(msg));
+
+    msg.qos = QOS0;
+    msg.payload = (void *)"this is a kawaii mqtt test ...";
+
+    return mqtt_publish(client, KAWAII_MQTT_PUBTOPIC, &msg);
+}
+
+static void kawaii_mqtt_demo(void *parameter)
+{
+    mqtt_client_t *client = NULL;
+    
+    mqtt_log_init();
+
+    client = mqtt_lease();
+
+    mqtt_set_host(client, KAWAII_MQTT_HOST);
+    mqtt_set_port(client, KAWAII_MQTT_PORT);
+    mqtt_set_user_name(client, KAWAII_MQTT_USERNAME);
+    mqtt_set_password(client, KAWAII_MQTT_PASSWORD);
+    mqtt_set_client_id(client, KAWAII_MQTT_CLIENTID);
+    mqtt_set_clean_session(client, 1);
+
+    KAWAII_MQTT_LOG_I("The ID of the Kawaii client is: %s ", KAWAII_MQTT_CLIENTID);
+
+    mqtt_connect(client);
+    
+    mqtt_subscribe(client, KAWAII_MQTT_SUBTOPIC, QOS0, sub_topic_handle1);
+    
+    while (1) {
+        //mqtt_publish_handle1(client);
+                               
+        mqtt_sleep_ms(4 * 1000);
+    }
+}
+
+int ka_mqtt(void)
+{
+    rt_thread_t tid_mqtt;
+
+    tid_mqtt = rt_thread_create("kawaii_demo", kawaii_mqtt_demo, RT_NULL, 2048, 17, 10);
+    if (tid_mqtt == RT_NULL) {
+        return -RT_ERROR;
+    }
+
+    rt_thread_startup(tid_mqtt);
+
+    return RT_EOK;
+}
+MSH_CMD_EXPORT(ka_mqtt, Kawaii MQTT client test program);
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@@ -0,0 +1,222 @@
+# 软件包和网络组件
+
+## 软件包机制
+
+指路：https://packages.rt-thread.org/
+
+![image-20250728200646021](./image/day5/image-20250728200646021.png)
+
+![image-20250728201351947](./image/day5/image-20250728201351947.png)
+
+![image-20250729105021059](./image/day5/image-20250729105021059.png)
+
+### [Kconfig](https://www.rt-thread.org/document/site/#/development-tools/build-config-system/Kconfig)
+
+#### Kconfig工作机制
+
+C语言项目的裁剪配置本质上通过条件编译和宏的展开来实现的，RT-Thread借助Kconfig这套机制更方便的实现了这一功能。当前以Windows下Env工具中的使用为例，简述Kconfig在RT-Thread的工作机制。
+
+Kconfig机制包括了Kconfig文件和配置UI界面（如`menuconfig`，`pyconfig`等）。Kconfig机制有如下特点：
+
+- Kconfig文件中的配置项会映射至rtconfig.h中
+- Kconfig文件可以随源码分散至各级子目录，便于灵活修改。
+
+![2333fc86-d182-4d07-91fd-e55afa37e9de](./image/day5/2333fc86-d182-4d07-91fd-e55afa37e9de.png)
+
+Kconfig文件在源码中呈现树形结构，需要**在工程的根目录下存在一份顶层Kconfig文件**，顶层Kconfig文件在文件中通过source语句显示地调用各子目录下的Kconfig文件。Env在根目录下执行menuconfig命令后会递归解析各级Kconfig文件，然后提供如下配置界面，完成相应的配置后并保存，根目录下会存在一份.config文件保存当前选择的配置项，并将.config文件转为RT-Thread的系统配置文件rtconfig.h。
+
+![构建配置系统](./image/day5/buildconfig3.png)
+
+#### 注释
+
+Kconfig 采用 `#` 作为注释标记符，例如：
+
+```C
+# This is a comment
+```
+
+### [SCons](https://www.rt-thread.org/document/site/#/development-tools/build-config-system/SCons)
+
+#### SCons简介
+
+SCons 是一套由 Python 语言编写的开源构建系统，类似于 GNU Make。它采用不同于通常 Makefile 文件的方式，而是使用 SConstruct 和 SConscript 文件来替代。这些文件也是 Python 脚本，能够使用标准的 Python 语法来编写。所以在 SConstruct、SConscript 文件中可以调用 Python 标准库进行各类复杂的处理，而不局限于 Makefile 设定的规则
+
+## 添加软件包
+
+按图示路径在空白处通过右键打开env
+
+![image-20250728202833312](./image/day5/image-20250728202833312.png)
+
+输入`menuconfig`查看图形化界面
+
+![image-20250728203856762](./image/day5/image-20250728203856762.png)
+
+按下`/`进入搜索界面，输入我们想要搜索的软件包
+
+![image-20250728204049574](./image/day5/image-20250728204049574.png)
+
+配置完成保存退出后会打印下图内容，可以得知我们实际操控的是.config文件。
+
+![image-20250728205623092](./image/day5/image-20250728205623092.png)
+
+输入`code .`进入vscode
+
+![image-20250728211915183](./image/day5/image-20250728211915183.png)
+
+* `pkgs --help`：查看命令
+* `pkgs --update`：更新并安装未选中软件包
+* `pkgs --upgrade`：从仓库更新软件包索引到本地
+
+![image-20250728215620586](./image/day5/image-20250728215620586.png)
+
+如果`pkgs --update`同步失败，可以在设置中找到env地址
+
+![image-20250728213929373](./image/day5/image-20250728213929373.png)
+
+然后手动同步，`git pull`获取远端分支。
+
+![image-20250728215121662](./image/day5/image-20250728215121662.png)
+
+![image-20250728215216638](./image/day5/image-20250728215216638.png)
+
+### 示例：LLM-Chat
+
+按图示一步步选择
+
+![image-20250729004440327](./image/day5/image-20250729004440327.png)
+
+![image-20250729004710188](./image/day5/image-20250729004710188.png)
+
+![image-20250729004748086](./image/day5/image-20250729004748086.png)
+
+enter进入后，我们需要获取api key，这里直接使用老师的：`sk-6af0822c7da545bd99090a3adc6148c9`。
+
+![image-20250729005057160](./image/day5/image-20250729005057160.png)
+
+注册阿里云账号：https://bailian.console.aliyun.com/?tab=model#/model-market
+
+![image-20250729005313104](./image/day5/image-20250729005313104.png)
+
+设置好api key之后，进入RT-Thread online packges → mbedtls菜单，修改Maxium feagment length in bytes 字段为 `6144`。
+
+![image-20250729010016109](./image/day5/image-20250729010016109.png)
+
+使能MbedTLS support，通过`/`搜索。
+
+![image-20250729010328061](./image/day5/image-20250729010328061.png)
+
+![image-20250729010505217](./image/day5/image-20250729010505217.png)
+
+按图示路径使能网络驱动
+
+![image-20250729010928319](./image/day5/image-20250729010928319.png)
+
+保存好之后通过`pkgs --update`拉取下来，如果失败可以先输入`pkgs --upgrade`，再重新拉取。下图所示就是成功了。
+
+![image-20250729012242433](./image/day5/image-20250729012242433.png)
+
+输入`scons j8`编译一下，编译成功之后输入`qemu-nographic.bat`运行。
+
+![image-20250729012732420](./image/day5/image-20250729012732420.png)
+
+运行之后按下tab键看一下有没有支持`llm`这个命令
+
+![image-20250729012919414](./image/day5/image-20250729012919414.png)
+
+输入`llm`会发现进入另外一个终端，提示`CTRL+D`可以退出这个终端。
+
+![image-20250729013308033](./image/day5/image-20250729013308033.png)
+
+可以在这个终端和大语言模型进行对话，这整个流程都是联网的，通过HTTP协议进行聊天。
+
+![image-20250729013532480](./image/day5/image-20250729013532480.png)
+
+如何验证有联网能力，输入`ifconfig`，有LINK_UP的状态意味着当前可以使用网络。
+
+![image-20250729014054830](./image/day5/image-20250729014054830.png)
+
+可以尝试`ping jd.com`，可以ping通说明具备联网能力。
+
+![image-20250729014350507](./image/day5/image-20250729014350507.png)
+
+## 网络组件
+
+### SAL网络框架
+
+RT-Thread 的 网络框架结构如下所示：
+
+![img](./image/day5/network_frame.jpg)
+
+最顶层是网络应用层，提供一套标准 BSD Socket API ，如 socket、connect 等函数，用于系统中大部分网络开发应用。
+
+往下第二部分为 SAL 套接字抽象层，通过它 RT-Thread 系统能够适配下层不同的网络协议栈，并提供给上层统一的网络编程接口，方便不同协议栈的接入。套接字抽象层为上层应用层提供接口有：accept、connect、send、recv 等。
+
+第三部分为 netdev 网卡层，主要作用是解决多网卡情况设备网络连接和网络管理相关问题，通过 netdev 网卡层用户可以统一管理各个网卡信息和网络连接状态，并且可以使用统一的网卡调试命令接口。
+
+第四部分为协议栈层，该层包括几种常用的 TCP/IP 协议栈，例如嵌入式开发中常用的轻型 TCP/IP 协议栈 lwIP 以及 RT-Thread 自主研发的 AT Socket 网络功能实现等。这些协议栈或网络功能实现直接和硬件接触，完成数据从网络层到传输层的转化。
+
+RT-Thread 的网络应用层提供的接口主要以标准 BSD Socket API 为主，这样能确保程序可以在 PC 上编写、调试，然后再移植到 RT-Thread 操作系统上。
+
+## 添加网络相关软件包
+
+### 示例：netutils
+
+![image-20250729191735079](./image/day5/image-20250729191735079.png)
+
+退出保存后`pkgs --update`拉取软件包，拉取完`scons -j8`编译查看效果，编译后`qemu-nographic.bat`运行，`ifconfig`查看是否联网。
+
+![image-20250729192737679](./image/day5/image-20250729192737679.png)
+
+`date`可以校准时间，网络调试功能：`ntp_sync`。
+
+![image-20250729193423985](./image/day5/image-20250729193423985.png)
+
+### 示例：MQTT
+
+* EMQX：https://www.emqx.com/zh
+
+* MQTTX：https://mqttx.app/zh/downloads
+
+* 在线使用：https://mqttx.app/web-client#/recent_connections
+
+把服务器地址改成：`broker.emqx.io`
+
+![image-20250729195957403](./image/day5/image-20250729195957403.png)
+
+修改一下id
+
+![image-20250729200123574](./image/day5/image-20250729200123574.png)
+
+拉取软件包：`pkgs --update`
+
+![image-20250729201117498](./image/day5/image-20250729201117498.png)
+
+编译：`scons -j8`
+
+![image-20250729201427904](./image/day5/image-20250729201427904.png)
+
+打开vscode可以看到我们刚刚配置的信息
+
+![image-20250729202119185](./image/day5/image-20250729202119185.png)
+
+`qemu-nographic.bat`运行，`ifconfig`查看是否联网，运行MQTT`ka_mqtt`。
+
+![image-20250729203414504](./image/day5/image-20250729203414504.png)
+
+通过`ps`查看线程，发现tcpip内存快满了。
+
+![image-20250729204451558](./image/day5/image-20250729204451558.png)
+
+按图示路径将内存改大一点
+
+![image-20250729204913421](./image/day5/image-20250729204913421.png)
+
+![image-20250729205410198](./image/day5/image-20250729205410198.png)
+
+发送数据
+
+![image-20250729213622034](./image/day5/image-20250729213622034.png)
+
+可以看到env这边接收到数据
+
+![image-20250729213658425](./image/day5/image-20250729213658425.png)