How to flash firmware to STM32 by STM32 with SWD?

[LYS]

I want to make A project that can flash firmware to STM32 by another STM32.

(not Act as ST-Link, Ack as standalone Writer like CYCLONE writer)

but I do not know what I should know to make the flash writter with SWD.

If you have any examples or any experience, please share with ME.

Best Regards,

Lee

[Javier1]

Hi @LYS im also interested in this, i didnt got any answers about a SWD master

https://community.st.com/s/question/0D53W00000tqUmYSAU/how-to-swd-serial-wire-as-a-master

[LYS]

Thank you for the reply.

if I get some information, I will let you know.

[Javier1]

We basically want to take a look at the firmware inside stlink chips (stm32f103c8)

This guy reverse engineered limited functionalities https://eevblog.com/forum/microcontrollers/dumping-and-reverse-engineering-st-link-v22-1-firmware/

[Tesla DeLorean]

Interacting with the ARM core via the JTAG​/SWD scan chains is non-trivial.

Should perhaps looks to generic debugging implementation rather than STM32 specific for the bit level protocol and core control.

T​he STM32 specific stuff would be addresses used for peripherals, and code uploaded to run in core and write/interact with the flash controller, QSPI, or whatever.

[Uwe Bonnes]

Understand and reuse the code from open source debuggers like OpenOcd, PyOcd or Bl*ckm*g*c Debug probe.

[Javier1]

thanks @Uwe Bonnes​  i didnt know about https://1bitsquared.com/products/black-magic-probe

This is what i was looking for!