[help needed] Help me with stm32f4

[azasaw]

Hello, I am new to this forum, got interested in rusefi when I was looking to buy ms, maybe half a year ago I bought frankenso and now I finished assembling/soldering and need your help. My problem or question is simply where do you short stm32 to program it, as my board doesn't have that stm discovery board as an add-on but the stm chip and other components are directly soldered to frankenso.

[Dron_Gus]

Serial bootloader? https://www.st.com/en/development-tools/flasher-stm32.html

[AndreyB]

Probably DFU. Jumper between VDD and BOOT0, will elaborate in a few hours

[azasaw]

Serial bootloader? https://www.st.com/en/development-tools/flasher-stm32.html

Don't get your question, yes? I need to connect my pc with stm so i could programme the chip but on rusefi wiki I see that I need to place jumpers on the discovery board, but my problems is that I have directly soldered stm to frankenso board there is no stm discovery like in picture.

[Abricos]

you need ST-link ...
if you dont have you may use STM32 discoveri bord which has part of the board as a programmer see on pic ...
I do not remember exactly, but it seems you need to remove two jumper (in the white circle) in order to use SWD on STM32 Discoveri as Programmer ...

discovery_upload_wire.JPG (93.04 KiB) Viewed 4429 times

SWD_Discovery_to_Apogee.png (17.18 KiB) Viewed 4430 times

[azasaw]

Probably DFU. Jumper between VDD and BOOT0, will elaborate in a few hours

Yes, this helped me to program without st-link.