USB commands

Hi all,

I am playing around with the USB commands in SIMTrace but I'm having a bit of trouble. I wrote a short python script to send a GET_VERSION command. However, only the first one is received by the board.

If I run it, the first time I will see a GET_VERSION in the debug terminal. If I try again, however many times, I do not see any output.

Why is this?

The script:

---snip--- #!/usr/bin/python import usb.core import usb.util

cmd="\x01\x00\x00\x00"

dev=usb.core.find(idVendor=0x16c0, idProduct=0x0762) dev.set_configuration() dev.write(1, cmd, 0) ---snip---