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minix/drivers/usbd
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Wojciech Zajac a42c8f6c41 Error checking for USB interrupt transfer
2014-07-28 17:05:41 +02:00
..
base usb:Adding usb enumeration. 2014-07-28 17:05:40 +02:00
hcd Error checking for USB interrupt transfer 2014-07-28 17:05:41 +02:00
include/usb Initial interrupt URBs support 2014-07-28 17:05:41 +02:00
Makefile arm:adding the usbd source code. 2014-07-28 17:05:38 +02:00
README.txt Error checking for USB interrupt transfer 2014-07-28 17:05:41 +02:00
usbd.conf arm:adding the usbd source code. 2014-07-28 17:05:38 +02:00

README.txt 

-------------------------------------------------------------------------------
*                           INFORMATION:                                      *
-------------------------------------------------------------------------------
README file for "USBD" USB host controller driver.

created march-june 2014, JPEmbedded (info@jpembedded.eu)

-------------------------------------------------------------------------------
*                           KNOWN LIMITATIONS:                                *
-------------------------------------------------------------------------------
- Only first configuration can be selected for attached device
- Only one device can be handled at a time, no hub functionality
- DDEKit does not implement resource deallocation for corresponding thread
  creation (see ddekit_thread_terminate, ddekit_thread_create) thus resources
  are spilled
- Driver assumes that there is no preemption for DDEKit threading
- URBs are enqueued in DDEKit but not in USBD itself
- DDEKit way of handling interface numbers is not explicitly defined, bitmask
  formatting for it, is therefore hardcoded into USBD