Posted on February 08, 2017 at 21:20An
STM32F427 micro
application that uses the FS USB OTG peripheral.
We have a condition where the the signal noise is large enough we end up with thousands of these errors and communication stops.
I believe we get a reset from the windows driver( host) .
Normally get a reset if the usb cable is unplugged and re - plugged in . When the Device is unplugged a suspend interrrupt happens.
When it is plugged back in, I get a usb-reset, and enumeration is started , and every thing is fine, I can reestablish communication.
It is when I have errors and the cable is still plugged in, and I get a usb-reset from windows I CANNOT re-establish communication.
Some code was added to Re-Initialize everything with a core reset, when I get a 'USB Reset' as if I was starting from power-up. This seamed to work sometimes but not always ;
Is this the correct procedure or is there a USB Peripheral specific reset code that should be used?
Thx
