AT2LP: TEST_UNIT_READY timeout? | Cypress Semiconductor
AT2LP: TEST_UNIT_READY timeout?
Hi - this is a more general description of the problem I recently posted about:
I'm trying to get the AT2LP bridge chip working on an old VxWorks version (5.5.1, with its USB 1.1 stack).
- VxWorks recognizes the device on attachment, but there is a ~2 second delay during the initialization, where the AT2LP times out on the TEST_UNIT_READY SCSI command.
A subsequent REQUEST SENSE command issued to the AT2LP indicates no error, and another TEST_UNIT_READY SCSI command is successful.
However: when I try doing a listing of the files on the device from the VxWorks shell
I see TEST_UNIT_READY sent, and another 2 second delay; the AT2LP does not respond successfully.
There must be something wrong with the way VxWorks is initializing itself, or the device; it's either in the USB BOT driver messages, or the SCSI commands.
Does anyone have any ideas, any place they can point me to?
Let me know if I can provide more details....thanks in advance...