locked out of my stm32g431.

TMich.1 · ‎2023-02-15

made my own board with stm32g431kb and accidentally disabled swd. I can't acces my board anymore and pulling up boot0 doesn't help.

TMich.1 · ‎2023-02-15

What does the sw active mean then? If it doesn't disable sw?

TMich.1 · ‎2023-02-15

i replaced the chip and it didnt solve the problem

Javier1 · ‎2023-02-15

>>What does the sw active mean then? If it doesn't disable sw?

i meant dissabled, sorry

>>i replaced the chip and it didnt solve the problem

was that chip preprogrammed? if it wasnt maybe you fried something else

we dont need to firmware by ourselves, lets talk

TMich.1 · ‎2023-02-15

it is a fresh chip from an unused stm32 nucleo that i took it from. I doubt i fried something because powerdraw was measured and never got high or hot. and I managed to make both boards work the first time for extended use.

TMich.1 · ‎2023-02-15

I tried again and played with the frequency and i got in but during debugging it rather soon lost connection again. and i didn't manage to get it working after retrying

Does this mean bad connections?

Piranha · ‎2023-02-19

Connect the NRST pin to debugger and set those in CubeProgrammer:

Connect mode: Under Reset

Reset mode : Hardware reset

TMich.1 · ‎2023-02-19

I tried this with no succes