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EZ-USB AT2LP with VxWorks 5.5.1?
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EZ-USB AT2LP with VxWorks 5.5.1?

Paulito posted on 07 Jun 2012 4:15 PM PST
Member
3 Forum Posts

Has anyone successfully used the EZ-USB AT2LP USB 2.0 to ATA/ATAPI Bridge with Wind River's VxWorks version 5.5.1 (and USB stack of the same vintage, which admittedly is a bit buggy)?

I got the AT2LP working fine under windows;

and VxWorks/USB stack successfully recognizes the device attaching and detaching;

I just can't read anything from the device:

- open() on /usbMsblk/testfile.txt fails, errno=6 No such device

- @ls "/usbMsblk/" from the shell returns -1 (after a couple second timeout)

I've tried tweaking several fields in the EEPROM via Blaster.exe, to no avail.

Any advice is greatly appreciated.




Re: EZ-USB AT2LP with VxWorks 5.5.1?

PRJI posted on 11 Jun 2012 04:13 AM PST
Cypress Employee
333 Forum Posts

 Hi,

 The BOT driver talks to the device. So please check whether this driver is present in the driver stack or not.

 



Re: EZ-USB AT2LP with VxWorks 5.5.1?

Paulito posted on 18 Jun 2012 09:32 AM PST
Member
3 Forum Posts

Hi - Yes, I do have the BOT driver installed.

When I try to do @ls "/usbMsblk/" to read the device, I see the following SCSI commands:

vxWorks sends CBW: READ CAPACITY 
Cypress sends CSW: OK
vxWorks sends CBW: TEST UNIT READY
Cypress doesn't respond
READ CAPACITY again, Cypress sends OK
TEST UNIT READY again, then Cypress sends FAIL

On compatible devices, I see TEST UNIT READY responded with OK, then the expected READ operations to get the directory listing.



Re: EZ-USB AT2LP with VxWorks 5.5.1?

aasi posted on 25 Jun 2012 11:51 PM PST
Cypress Employee
1090 Forum Posts

http://www.cypress.com/?app=forum&id=167&rID=64350






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