acassis commented on issue #16774: URL: https://github.com/apache/nuttx/issues/16774#issuecomment-3124491330
Hi @GigantQuo thank you for this nice introduction and kind words! In fact you are not the first one to face issue with this blackpill board, I also faced issues to get it working and USB/NSH never worked for me. In fact there is some know issues that ST introduced to STM32F411 USB (that issues doesn't affect for example STM32F407). Even the internal USB DFU doesn't work correctly, I spent a lot of time until discover a trick to make it working: https://acassis.wordpress.com/2020/06/07/flashing-the-blackpill-on-linux-using-dfu-util/ So everything you described above is correct and will work if you select a board like STM32F4Discovery that uses STM32F407 or any other STM32 board or even other architecture. Something I didn't investigate is the USB pull-up resistors, I remember in the bluepill they come with incorrect values (I think 10k instead of 1k5) and I need to change it to get the USB working correctly. I didn't find much reference to it although: https://community.st.com/t5/others-stm32-mcus-related/custom-pcb-with-stm32f411-usb-issue/td-p/804471 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
