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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", this skill should be used.

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Overview

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npx skills add https://github.com/changde-tang/embedded-skills --skill jlink-download

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changde-tang/embedded-skills

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UpdatedApril 18, 2026 at 06:55

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SKILL.md

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name

jlink-download

description

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

pip install pylink

Usage

# 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

Initialize and connect J-Link
Connect to target chip (SWD interface)
Erase chip (optional)
Write firmware file
Read memory to verify data (optional)
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)

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Source

changde-tang

changde-tang/embedded-skills

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Software DevelopersComputer and Mathematical Occupations15-1252L4

name

jlink-download

description

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

pip install pylink

Usage

# 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

Initialize and connect J-Link
Connect to target chip (SWD interface)
Erase chip (optional)
Write firmware file
Read memory to verify data (optional)
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)