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AT Bridge

by zeng-andrew
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AT Bridge

MCP server for AI-driven AT command debugging over serial port.

AT Bridge 是一个 Model Context Protocol 服务器，让 AI 助手能够通过 COM/串口直接与 IoT 模组通信，进行 AT 命令调试。内置可维护的芯片平台知识库，实测过的命令自动沉淀。

Features

  • 串口通信 — 自动探测可用 COM 口，支持主流波特率，可配置校验位/流控

  • AT 命令调试 — 发送 AT 命令并解析响应，自动补全 AT 前缀

  • 批量测试 — 一次性发送命令列表，自动分类 PASS/ERR/CME

  • 知识库 — 按芯片平台分层存储 AT 命令（含语法、返回值含义、实测数据），支持搜索和持续积累

  • 双层存储 — 包内 YAML 只读（随版本分发），用户数据写到 %APPDATA%（跨版本保留）

Related MCP server: embedded-serial-mcp

Quick Start

uv sync
uv run python main.py

MCP Configuration

{
  "mcpServers": {
    "at-bridge": {
      "command": "uv",
      "args": ["run", "--directory", "path/to/at_bridge", "python", "main.py"]
    }
  }
}

Tools

Serial Communication

Tool

Description

at_list_ports

枚举 COM/串口，含 VID/PID、制造商、描述

at_auto_detect

自动探测 — 扫描所有端口，试多种波特率，找出响应 AT 的设备

at_configure

配置波特率、数据位、校验位、停止位、流控

at_open_port / at_close_port

打开/关闭串口连接

at_send_command

发送单条 AT 命令，自动补全 AT 前缀，解析响应

at_batch_test

批量测试 — 一次发送命令列表，自动分类结果

Knowledge Base

Tool

Description

at_knowledge_search

按关键词/平台/标签搜索命令库

at_knowledge_list

列出全部命令，可按平台过滤

at_knowledge_add

添加/更新命令到指定芯片平台

at_knowledge_chipsets

查看可用的芯片平台列表

at_knowledge_stats

知识库统计：条目数、来源分布

Chipsets

芯片平台知识库位于 src/at_bridge/chipsets/，按平台分层：

文件

内容

_3gpp.yaml

3GPP 标准 AT 命令（49 条），只读基础库

asr.yaml

ASR 平台私有命令与平台特性

quectel.yaml

移远 EC200x 等私有命令（48 条）

_custom.yaml

用户自定义命令，自动创建于 %APPDATA%/at-bridge/chipsets/

加载顺序：_3gpp → 平台文件 → _custom（后者覆盖同名 key）。

Project Structure

at_bridge/
  main.py                    # Entry point — MCP server on stdio
  src/at_bridge/
    server.py                # MCP server: 12 tool definitions + handlers
    serial_handler.py        # Serial I/O + batch test engine
    knowledge_store.py       # YAML knowledge base CRUD with two-layer storage
    chipsets/                # Platform command libraries
      _3gpp.yaml / asr.yaml / quectel.yaml
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