Posted on July 08, 2015 at 16:04Hi,
I'm running a stm32f427 on a custom board as Host, HS core, FS mode.
When a device is attached I get an interrupt when the device is detected and the host starts sending SOF's. But the last bits in the SOF packet is at a strange voltage level. They are at 1.5 V, a half one!
Look at this scope image:
https://drive.google.com/open?id=0B3wMeRPstoowY3VFN0hWYk8zVllzNk1UMzA3V1hpcFdNZjk4Anyone have seen this before or can explain it?
The device does not reply on requests as it detects a CRC error.
#sof #stm32 #usb
