Unable to use USB on at91sam7s-ek

[Bas Jacobs]

Dear List,

I've tried to compile and run the
usb-device-cdc-serial-project-at91sam7s-ek. I'm using the codesourcery
toolchain and the sam-ba programming tool. The compilation and flash
procedures go well. However, there are some problems when I try to connect
and communicate with the board.

I made some modifications to the source, i added the following piece of code
before the last two ifstatements:

        usbBuffer[0] = 0x01234567;
        usbBuffer[1] = 0x09876543;

        CDCDSerialDriver_Write(usbBuffer, DATABUFFERSIZE, 0, 0);

I disabled the cdc_acm driver (blacklist and rmmod).

I am:
uname -a
Linux USSR 2.6.37-02063701-generic #201102181135 SMP Fri Feb 18 12:47:22 UTC
2011 i686 GNU/Linux (I use the 37 kernel because of the sam-ba driver).

dmesg says the following:
[ 5845.748085] usb 6-1: new full speed USB device using uhci_hcd and address
25

lsusb says the following:
Bus 008 Device 002: ID 0a5c:2101 Broadcom Corp. Bluetooth Controller
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 023: ID 03eb:6119 Atmel
Corp.                                        <-- This is the at91sam7s256
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 003: ID 046d:c05d Logitech, Inc.
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 003: ID 04e8:5041 Samsung Electronics Co., Ltd
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0ac8:c326 Z-Star Microelectronics Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

cat /dev/bus/usb/006/025 | hd says the following:
00000000  12 01 00 02 02 00 00 08  eb 03 19 61 00 01 00 01
|...........a....|
00000010  00 01 09 02 43 00 02 01  00 c0 32 09 04 00 00 01
|....C.....2.....|
00000020  02 02 00 00 05 24 00 10  01 05 24 01 01 00 04 24
|.....$....$....$|
00000030  02 02 05 24 06 00 01 07  05 83 03 40 00 0a 09 04
|...$....... at ....|
00000040  01 00 02 0a 00 00 00 07  05 01 02 40 00 00 07 05
|........... at ....|
00000050  82 02 40 00 00                                    |.. at ..|
00000055

I would like to be able to set up some communication with the board, but I'm
a bit out of clues. Google isn't very helpful either. Any links to working
tutorials or own experiences are most welcome. Also, of course, if you've
troubles setting up the toolchain: let me know.

I'm also not entirely sure whether this list is the correct place for my
question.

Best regards,
Bas Jacobs
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