i.MX233 as USB device - HighSpeed Handshake Problem

mbergmann — Fri, 08 Feb 2013 14:14:12 GMT

Hi,

I'm trying to connect our own i.MX233 board as a USB Mass Storage device.

The software is all done ourselfe. No BSP.

Currently I‘m struggling with the HighSpeed Handshake:

The Handshake is looking like this:

4 ,0:00.000.000, ,<Host connected>,

FS,5 ,0:04.443.538, ,<Full-speed>,

FS,6 ,0:04.623.206, 1.504.166 ms,<Reset> / <Chirp J> / <Tiny J>,

FS,7 ,0:04.624.710, 2.000.400 ms,<Chirp K>,

FS,8 ,0:04.626.711, 53.816 us,<Reset> / <Chirp J> / <Tiny J>,

FS,9 ,0:04.626.765,62.309.516 ms,[680 Chirp K-J pairs] [1 Chirp K],

FS,1372,0:04.689.074, 214.083 us,<Reset> / <Chirp J> / <Tiny J>,

HS,1373,0:04.689.288, ,<High-speed> (Unexpected)

HS,1374,0:04.689.288, 744.733 us,CORRUPTED packet,01 D8 C6 FA DA

FS,1375,0:04.690.033, ,<Full-speed>,

The USB is allways switching back to Full-speed.

If I start the board in recovery mode I got a propper handshake and a working HID device (and loading software with sb_loader works fine), so I assume its my software and not the hardware.

Anybody seen this before? Is there a example how to set up the USB as device?

Thanks

Mike

Re: i.MX233 as USB device - HighSpeed Handshake Problem

MarekVasut — Mon, 18 Feb 2013 01:31:24 GMT

The USB IP block is really ChipIdea CI13xxx, you might want to poke around that.

Re: i.MX233 as USB device - HighSpeed Handshake Problem

mbergmann — Thu, 21 Feb 2013 16:59:35 GMT

Thanks, that helped. Had problems initializing the cell. Now the handshake is correct.

i.MX ProcessorsのトピックRe: i.MX233 as USB device - HighSpeed Handshake Problem

i.MX233 as USB device - HighSpeed Handshake Problem

Re: i.MX233 as USB device - HighSpeed Handshake Problem

Re: i.MX233 as USB device - HighSpeed Handshake Problem