Serial MCP Server

Serial MCP Server

Enables AI tools like Claude Code and Codex CLI to read and write serial port data, facilitating embedded development workflows such as coding, flashing, and debugging.

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Serial MCP Server

Node Platform License

嵌入式 AI 调试串口 MCP 服务,让 Claude Code / Codex CLI 等 AI 工具能够直接读写串口数据,实现编码→烧录→调试的完整闭环。

功能状态

功能 状态
串口连接/断开 ✅ 稳定
数据收发 ✅ 稳定
SQLite 数据持久化 ✅ 稳定
多串口并发 ✅ 稳定
设备自动检测 ✅ 稳定
监控窗口 TUI ✅ 稳定
定时发送 ✅ 稳定
Modbus RTU 🚧 开发中
Web 监控面板 🚧 规划中

架构

AI (Claude Code / Codex CLI)
        │ MCP Protocol
        ▼
┌─────────────────┐
│  serial-mcp     │  MCP Server (9 tools)
│  server.js      │
└────────┬────────┘
         │ HTTP POST localhost:7070
         ▼
┌─────────────────┐        ┌──────────────────┐
│  serial-db      │◄──────►│  SQLite          │
│  listener.js    │  读写   │  serial.db       │
└────────┬────────┘        └──────────────────┘
         │ UART COM3
         ▼
┌─────────────────┐
│  单片机 / 虚拟  │  COM2 ↔ COM3
│  serial-virtual │
└─────────────────┘

功能

  • 实时接收串口数据,持久化到 SQLite
  • AI 主动查询历史数据,按 session / 时间范围检索
  • AI 发送指令并等待响应,120ms 内响应
  • 支持多种响应边界模式(timeout / delimiter / length)
  • 虚拟串口模拟器,无需真实硬件即可开发调试
  • 一键启动/停止脚本

项目结构

serial-mcp/
├── serial-virtual/     虚拟单片机模拟器
├── serial-db/          串口监听 + SQLite 数据池 + HTTP 转发服务
├── serial-mcp/         MCP Server
├── start-all.bat       一键启动
├── stop-all.bat        一键停止
└── .mcp.json           Claude Code MCP 配置

依赖

  • Node.js v18+
  • Windows 系统
  • 虚拟串口驱动(开发调试用):ELTIMA VSPcom0com

安装

Claude Code

claude mcp add serial -- npx -y @lckandyou/serial-mcp

Codex CLI

codex mcp add serial -- npx -y @lckandyou/serial-mcp

验证是否安装成功

# Claude Code
claude mcp list

# Codex CLI  
codex mcp list

看到 serial 状态为 connected 即成功。

使用方式

安装完成后,直接告诉 AI 你的串口信息: "我的设备接在 COM5,波特率 115200,帮我连接并开始调试"

AI 会自动完成连接,无需任何额外配置。

MCP 工具列表

工具 说明
list_ports 扫描可用串口
connect_port 连接指定串口并创建新会话
disconnect_port 断开当前串口
send_data 发送数据
read_latest 读取最新 N 条数据
read_since 读取指定时间后的数据
send_and_wait 发送指令并等待响应
new_session 创建新会话(烧录后调用)
get_status 获取当前串口状态

真实硬件接入

  1. 停止运行 serial-virtual
  2. serial-db/config.jsonport 改为实际串口号
  3. 重启 serial-db

无需修改 MCP Server,AI 调试方式完全一致。

FAQ

Q: 为什么 list_ports 看不到 COM2/COM3?
A: ELTIMA VSP 的虚拟端口不走标准 WMI 枚举,但实际通信正常,不影响使用。

Q: 支持 Linux/Mac 吗?
A: 串口通信部分支持,但 start-all.bat 仅限 Windows,Linux/Mac 需手动启动各服务。

Q: 数据库会无限增长吗?
A: 不会,超过 10000 条自动清理最老的数据,可在 serial-db/config.jsonmaxRows 调整。

Q: 如何判断烧录前后的数据?
A: 烧录完成后调用 new_session 创建新会话,后续用 session_id 过滤数据即可。

License

MIT

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