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USB 2.0


i have added support for USB 2.0 to the ecos usb packages, in detail:

- added device qualifier and other speed configuration descriptor
- added defines for testmodes

- usbs_enumeration_data has new members for other speed configurations and high- and full speed endpoints
- usbs_control_endpoint has new or different members: 
  - speed of the requested descriptors
  - state_change_fn receives a new parameter: current speed
  - current_speed stores the current usb speed
  - current_packet_size stores the maximum packet size allowed for the current_speed
- extensions to the endpoints:
  - endopints have a new member index (their usb index)
  - new member end_packet says if the driver shall end the packet. If the packet size is 
    a multiple of the max packet size, and end_packet is set, no zero length packet is
    sent or expected. So packets can be sent or received in multiple portions (e.g. 
    12000 bytes in a portion of 8192 bytes (end_packet = 0) and an other of 3808
    (with end_packet = 1). This reduces the neccessary buffer size in the application.
  - enable_dma says if the driver shall use DMA for the respective endpoint.
- pointer to a function that shall be called from a dsr (e.g. to handle a switch to thread context)

The problem might be, that since some members and function declarations changed, old code is not compatible and needs to be updated. 


Attachment: usbs.h.diff
Description: usbs.h.diff

Attachment: usb.h.diff
Description: usb.h.diff

Attachment: usbs.c.diff
Description: usbs.c.diff

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