Question
[NUCLEO-H743ZI] USB: How to check the reason of the BROKEN_PIPE(-EPIPE) message from the USB Device?
Hello!
HW: NUCLEO-H743ZI
SW: MxCube v6.8.1
Application: USB CDC
OS: Ubuntu 20.04.1 5.15.0-75
USB Hub: No, the device is connected directly to the USB port (without any USB hubs usage)
It was generated a USB CDC Application solution by using MxCube v6.8.1
Some Log Data is transferred to the PC by using USB CDC to PC continuously
By using Wireshark, I see that messages with "data" is transferring each 2-3ms, but sometimes, the USB-Device answers with "BROKEN_PIPE" status message(see image bellow)
Could you help to define which reason was to generate BROKEN_PIPE message?
Which interrupt bit could be set by MCU embed USB device to inform the application about such type of message?
A similar problem was described in:
- https://stcommunity.st.com/t5/embedded-software-mcus/stm32f745-dual-cdc-problems/m-p/93161
- https://stcommunity.st.com/t5/embedded-software-mcus/usb-cdc-fails-on-f745-when-communicating-through-usb-hub/m-p/117702#M5821
- https://stcommunity.st.com/t5/embedded-software-mcus/stm32f745-dual-cdc-problems/m-p/93161