Jtag swd debug

Skill a5c-ai/babysitter/library/specializations/embedded-systems/skills/jtag-swd-debug

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Install

npx -y skills add a5c-ai/babysitter --skill jtag-swd-debug

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What its author says it does

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Deep integration with JTAG/SWD debug probes for hardware-level debugging and flash programming

SKILL.md

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JTAG/SWD Debug Skill

Overview

This skill provides deep integration with JTAG/SWD debug probes for hardware-level debugging, flash programming, and real-time firmware analysis. It enables direct hardware interaction through industry-standard debug interfaces.

Capabilities

Debug Probe Operations

Execute OpenOCD, J-Link, and ST-LINK commands
Configure debug probe connections and interfaces
Manage multiple debug probe types and adapters
Handle transport protocols (JTAG, SWD, cJTAG)

Memory Operations

Read/write memory-mapped registers
Direct memory inspection and modification
Real-time memory watch and modification
Flash programming and verification
Memory dump and analysis

Debugging Features

Set hardware breakpoints and watchpoints
Core state inspection (registers, stack, PC)
Single-step execution control
Fault handler analysis and debugging
Call stack unwinding

Trace and Output

Semihosting input/output support
SWO trace output configuration
ITM stimulus port configuration
Real-time trace buffer analysis

Target Processes

hardware-bring-up.js - Initial board validation and debug setup
bootloader-implementation.js - Bootloader debugging and flash operations
device-driver-development.js - Driver debugging with hardware access
field-diagnostics.js - Field debugging and analysis

Dependencies

OpenOCD (Open On-Chip Debugger)
J-Link software (Segger)
ST-LINK utilities (STMicroelectronics)
Debug probe hardware (J-Link, ST-LINK, CMSIS-DAP)

Usage Context

This skill is invoked when tasks require:

Direct hardware debugging through JTAG/SWD
Flash memory programming operations
Low-level register and memory inspection
Fault analysis and crash debugging
Hardware breakpoint management

Configuration

debug_probe:
  type: jlink | stlink | openocd | cmsis-dap
  interface: swd | jtag
  speed: 4000  # kHz
  target: cortex-m4 | cortex-m7 | etc.

Example Operations

Flash Programming

openocd -f interface/stlink.cfg -f target/stm32f4x.cfg \
  -c "program firmware.elf verify reset exit"

Memory Read

JLinkExe -device STM32F407VG -if SWD -speed 4000 \
  -CommanderScript read_memory.jlink

Register Inspection

openocd -f board/stm32f4discovery.cfg \
  -c "init; halt; reg; resume; exit"