# Jlink Download

> Use J-Link debugger to flash firmware (.bin or .hex) to ARM Cortex-M microcontrollers, supporting GD32/STM32 and other chips. Trigger scenarios: (1) Flash firmware to microcontroller, (2) User mentions "flash", "burn", "download firmware", "download", (3) Need to write compiled .bin or .hex file to chip, (4) Program target board via J-Link. Even if user just says "flash it" or "burn the chip", th…

- **Type:** Skill
- **Install:** `agentstack add skill-changde-tang-embedded-skills-jlink-download`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [changde-tang](https://agentstack.voostack.com/s/changde-tang)
- **Installs:** 0
- **Category:** [Developer Tools](https://agentstack.voostack.com/c/developer-tools)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [changde-tang](https://github.com/changde-tang)
- **Source:** https://github.com/changde-tang/embedded-skills/tree/main/jlink-download

## Install

```sh
agentstack add skill-changde-tang-embedded-skills-jlink-download
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# J-Link Firmware Flashing

Invoke `py_jlink_download.py` to flash firmware files to target chips via J-Link debugger, supporting full process of erase, flash, verify, and reset.

## Tool Script

**Script Path**: `py_jlink_download.py`
**Dependencies**: Python 3.x + `pylink` library

```bash
pip install pylink
```

## Usage

```bash
# Basic usage (default chip GD32F103C8)
python py_jlink_download.py firmware.bin

# Specify chip model
python py_jlink_download.py firmware.bin -d STM32F103C8

# Specify flash start address
python py_jlink_download.py firmware.bin -a 0x08001000

# Skip erase and verify (faster)
python py_jlink_download.py firmware.bin --no-erase --no-verify
```

## Parameter Description

| Parameter     | Short | Description                        | Default       |
| ------------- | ----- | ---------------------------------- | ------------- |
| `firmware`    | -     | Firmware file path (.bin or .hex) | **Required**  |
| `--device`    | `-d`  | Target chip model                  | `GD32F103C8`  |
| `--addr`      | `-a`  | Flash start address                | `0x08000000`  |
| `--no-erase`  | -     | Skip chip erase before flashing   | Default erase |
| `--no-verify` | -     | Skip flash data verification       | Default verify |
| `--no-run`    | -     | Do not reset and run after flash   | Default reset |

## Flash Process

1. Initialize and connect J-Link
2. Connect to target chip (SWD interface)
3. Erase chip (optional)
4. Write firmware file
5. Read memory to verify data (optional)
6. Reset and run program (optional)

## Common Chip Models

- `GD32F103C8` / `GD32F303RC`
- `STM32F103C8` / `STM32F103RET6`

> If chip model is unknown, run `JLinkDevices` command to view the complete device list supported by J-Link.

## Notes

- Ensure J-Link debugger is connected to both computer and target board
- Chip model must exactly match the name in J-Link database
- For `.hex` file flashing, verification step errors can be ignored (hex format contains address information)

## Source & license

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

- **Author:** [changde-tang](https://github.com/changde-tang)
- **Source:** [changde-tang/embedded-skills](https://github.com/changde-tang/embedded-skills)
- **License:** MIT

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

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-changde-tang-embedded-skills-jlink-download
- Seller: https://agentstack.voostack.com/s/changde-tang
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.