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SKILL verified MIT Self-run

Openocd

skill-zhinkgit-embeddedskills-openocd · by zhinkgit

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Install

$ agentstack add skill-zhinkgit-embeddedskills-openocd

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Security review

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No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access No
  • Filesystem access No
  • Shell / process execution No
  • Environment & secrets No
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

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1mo ago

Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

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About

OpenOCD 下载与调试

本 skill 提供 OpenOCD 的探针探测、固件烧录、Flash 擦除、GDB Server 启动、目标复位、 Telnet 在线调试、GDB 源码级调试和 Semihosting 输出捕获能力。

配置

环境级配置(skill/config.json)

skill 目录下的 config.json 包含环境级配置(工具路径、端口号等),首次使用前确认 exe 路径正确:

{
  "exe": "openocd",
  "scripts_dir": "",
  "gdb_port": 3333,
  "telnet_port": 4444,
  "gdb_exe": "",
  "operation_mode": 1
}
  • exe:openocd.exe 路径或命令名(必填)
  • scripts_dir:OpenOCD 配置脚本目录,为空时使用 OpenOCD 内置路径
  • gdb_port:GDB Server 端口,默认 3333
  • telnet_port:Telnet 端口,默认 4444
  • gdb_exe:arm-none-eabi-gdb 路径,GDB 调试子命令(run/backtrace/locals)需要
  • operation_mode1 直接执行 / 2 输出风险摘要但不阻塞 / 3 执行前确认

工程级配置(.embeddedskills/config.json)

board/interface/target 等工程参数统一在工作区的 .embeddedskills/config.json 中管理:

{
  "openocd": {
    "board": "",
    "interface": "interface/stlink.cfg",
    "target": "target/stm32f4x.cfg",
    "adapter_speed": "4000",
    "transport": "swd",
    "tpiu_name": "stm32f4x.tpiu",
    "traceclk": "168000000",
    "pin_freq": "2000000"
  }
}
  • board:board 配置(如 board/stm32f4discovery.cfg),优先级高于 interface+target
  • interface:interface 配置(如 interface/stlink.cfg
  • target:target 配置(如 target/stm32f4x.cfg
  • adapter_speed:调试速率 kHz
  • transport:传输协议(swd/jtag)
  • tpiu_name / traceclk / pin_freq:ITM/SWO 观测所需的 TPIU 参数

参数解析优先级:CLI 显式参数 > .embeddedskills/config.json(工程级)> skill/config.json(环境级)> .embeddedskills/state.json > 默认值/报错

成功执行后,确认过的参数会自动写回工程配置。

子命令

基础操作

| 子命令 | 用途 | 风险 | |--------|------|------| | probe | 验证 board 或 interface+target 组合,探测目标连通性 | 低 | | flash | 烧录固件(.elf / .hex / .bin) | 高 | | erase | 擦除目标 Flash | 高 | | reset / reset-init | 复位目标芯片 | 高 | | targets / flash-banks / adapter-info | 查询底层 target / flash / adapter 信息 | 低 | | raw | 执行受控 OpenOCD 原生命令 | 高 |

GDB Server

| 子命令 | 用途 | 风险 | |--------|------|------| | gdb-server | 启动 GDB Server,保持运行等待 GDB 连接 | 低 | | gdb backtrace/locals | 快捷获取调用栈和局部变量 | 低 | | gdb break/continue/next/step/finish/until | one-shot 执行流控制 | 低 | | gdb frame/print/watch/disassemble/threads/crash-report | one-shot 源码级诊断 | 低 |

Telnet 在线调试

| 子命令 | 用途 | 风险 | |--------|------|------| | halt | 暂停 CPU,返回 PC/xPSR | 低 | | resume | 恢复 CPU 运行 | 低 | | step | 单步执行(支持 --count N) | 低 | | reg | 查看所有 CPU 寄存器 | 低 | | read-mem | 读内存(--width 8/16/32--length N) | 低 | | write-mem | 写内存(--width 8/16/32) | 高 | | bp | 设置硬件断点 | 低 | | rbp | 移除断点 | 低 | | run-to | 运行到指定地址(设置断点 + resume + 等待命中) | 低 |

Semihosting

| 子命令 | 用途 | 风险 | |--------|------|------| | semihosting | 启用 ARM Semihosting 并捕获目标 printf 输出 | 低 | | itm | 基于 TPIU/ITM 读取 SWO/ITM 观测数据 | 低 |

执行流程

  1. 读取 skill/config.json,确认 exe 路径有效
  2. 读取 .embeddedskills/config.json 获取工程级配置(board/interface/target 等)
  3. 读取 .embeddedskills/state.json 获取历史状态
  4. 参数解析优先级:CLI 显式参数 > .embeddedskills/config.json(工程级)> skill/config.json(环境级)> .embeddedskills/state.json > 默认值/报错
  5. 已知 board 时优先使用 -f board/*.cfg,否则组合 -f interface/*.cfg -f target/*.cfg
  6. boardinterfacetarget 同时缺失时,不自动拼接组合,直接要求用户补充
  7. operation_mode 决定是否需要确认后执行
  8. 根据子命令调用对应脚本
  9. 统一解析输出中的 InfoError 和就绪日志,返回结构化结果
  10. 成功执行后,将确认过的参数写回 .embeddedskills/config.json

脚本调用

skill 目录下有五个 Python 脚本,使用标准库实现,无额外依赖。

openocd_run.py — 探测 / 烧录 / 擦除 / 复位

# 探测连通性(使用 board)
python /scripts/openocd_run.py probe --board board/stm32f4discovery.cfg --json

# 探测连通性(使用 interface + target)
python /scripts/openocd_run.py probe --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 烧录 ELF 固件
python /scripts/openocd_run.py flash --file build/app.elf --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 烧录 BIN 固件(必须提供地址)
python /scripts/openocd_run.py flash --file build/app.bin --address 0x08000000 --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 擦除 Flash(自动选择 mass/sector)
python /scripts/openocd_run.py erase --mode auto --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 复位目标
python /scripts/openocd_run.py reset --mode halt --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 查询 target 列表
python /scripts/openocd_run.py targets --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 查询 flash bank
python /scripts/openocd_run.py flash-banks --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 执行受控 raw 命令
python /scripts/openocd_run.py raw --interface interface/stlink.cfg --target target/stm32f4x.cfg --command "init" "targets" --json

通用可选参数:--board --search --adapter-speed --transport --exe

openocd_gdb.py — GDB Server 启动与调试

# 启动 GDB Server(保持运行)
python /scripts/openocd_gdb.py server --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 无子命令时默认 server(向后兼容)
python /scripts/openocd_gdb.py --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 执行自定义 GDB 命令序列
python /scripts/openocd_gdb.py run --gdb-exe arm-none-eabi-gdb --elf build/app.elf --interface interface/stlink.cfg --target target/stm32f4x.cfg --commands "break main" "continue" "backtrace" "info locals" --json

# 快捷获取调用栈
python /scripts/openocd_gdb.py backtrace --gdb-exe arm-none-eabi-gdb --elf build/app.elf --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 快捷查看局部变量
python /scripts/openocd_gdb.py locals --gdb-exe arm-none-eabi-gdb --elf build/app.elf --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

可选参数:--gdb-port--telnet-port--search--adapter-speed--transport--board

openocd_telnet.py — Telnet 在线调试

# 暂停 CPU
python /scripts/openocd_telnet.py halt --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 恢复运行
python /scripts/openocd_telnet.py resume --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 单步 5 次
python /scripts/openocd_telnet.py step --count 5 --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 查看寄存器
python /scripts/openocd_telnet.py reg --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 读内存(32bit x 16 个字)
python /scripts/openocd_telnet.py read-mem --address 0x20000000 --length 16 --width 32 --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 写内存
python /scripts/openocd_telnet.py write-mem --address 0x20000000 --value 0xDEADBEEF --width 32 --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 设置硬件断点
python /scripts/openocd_telnet.py bp --address 0x08001234 --bp-length 2 --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 移除断点
python /scripts/openocd_telnet.py rbp --address 0x08001234 --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 运行到指定地址(设置断点 + resume + 等待)
python /scripts/openocd_telnet.py run-to --address 0x08001234 --timeout-ms 3000 --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

通用可选参数:--board--search--adapter-speed--transport--gdb-port--telnet-port

openocd_semihosting.py — Semihosting 输出捕获

# 捕获 semihosting 输出(持续到 Ctrl+C)
python /scripts/openocd_semihosting.py --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 捕获 30 秒
python /scripts/openocd_semihosting.py --timeout 30 --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

openocd_itm.py — ITM/SWO 观测

# 使用配置中的 TPIU 参数持续读取 ITM
python /scripts/openocd_itm.py --interface interface/stlink.cfg --target target/stm32f4x.cfg --json

# 指定 TPIU 名称和端口
python /scripts/openocd_itm.py \
  --interface interface/stlink.cfg --target target/stm32f4x.cfg \
  --tpiu-name stm32f4x.tpiu --traceclk 168000000 --pin-freq 2000000 \
  --itm-port 0 --itm-port 1 --json

openocd_itm.py 会启动独立 OpenOCD Server,打开 TPIU/ITM 配置后,把 trace 输出统一包装成 JSON Lines。

调试典型工作流

快速检查(Telnet)

halt -> reg -> read-mem 0x20000000 -> step -> resume

适合快速查看当前 CPU 状态和内存内容。

断点调试(Telnet)

run-to 0x08001234 -> reg -> read-mem -> resume

运行到指定地址后暂停,检查寄存器和内存。

源码级调试(GDB)

gdb run --elf app.elf --commands "break main" "continue" "backtrace" "info locals"

使用 ELF 文件提供符号信息,进行函数级断点和变量查看。

Semihosting 输出

semihosting

捕获目标通过 printf(SVC 指令)输出的调试信息,类似 J-Link RTT。

输出格式

所有脚本以 JSON 格式返回,基础字段为 status(ok/error)、actionsummarydetails,并可能附带 contextartifactsmetricsstatenext_actionstiming。流式观测命令使用 JSON Lines,并统一输出 sourcechannel_typestream_type

成功示例:

{
  "status": "ok",
  "action": "halt",
  "summary": "已暂停,PC=0x08000298",
  "details": {
    "pc": "0x08000298",
    "xpsr": "0x01000000",
    "msp": "0x20020000",
    "halted": true
  }
}

GDB 调用栈示例:

{
  "status": "ok",
  "action": "backtrace",
  "summary": "GDB backtrace 执行成功",
  "details": {
    "gdb_port": 3333,
    "frames": [
      {"frame": 0, "function": "main", "location": "src/main.c:42"}
    ]
  }
}

错误示例:

{
  "status": "error",
  "action": "halt",
  "error": {
    "code": "server_failed",
    "message": "OpenOCD 启动失败或超时"
  }
}

核心规则

  • 不自动猜测 boardinterfacetarget 的组合,缺失时必须询问用户
  • 已知 board 时优先使用 board 配置,不再需要 interface+target
  • 参数解析优先级为:CLI 显式参数 > .embeddedskills/config.json(工程级)> skill/config.json(环境级)> .embeddedskills/state.json > 默认值/报错
  • .bin 文件必须显式提供烧录地址,缺失时报错
  • STM32F4 等已映射 target 在 erase --mode auto 下会先 reset halt,再优先使用 mass erase
  • erase --mode mass 在未命中映射时直接返回 mass_erase_unsupported,避免误以为已做整片擦除
  • 检测到 Flash 锁保护时只提示,不自动解锁
  • 连接失败时给出排查建议(检查连线、供电、驱动、cfg 路径),不自动尝试更激进参数
  • 烧录、擦除、复位在参数完整且用户意图明确时直接执行
  • gdb-server 启动后返回端口和连接方式,进程保持运行
  • GDB 调试(run/backtrace/locals)需要配置 gdb_exe(arm-none-eabi-gdb 路径)
  • Telnet 调试命令每次启动独立的 OpenOCD Server,执行完自动关闭
  • Semihosting 通过 Telnet 启用后持续读取 OpenOCD stderr 输出
  • 结果回显中始终包含 cfg 组合、端口和执行动作
  • 产物路径(elf/file)不进入工程配置,仍只依赖 state.json
  • last_flash/last_debug/last_observe 等运行状态继续写入 state.json

参考

遇到 board/interface/target 配置问题时可查阅 references/common_targets.md

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.