USB HID - Maximum byte per loop


Closed Thread
Results 1 to 3 of 3
  1. #1
    Tgq's Avatar
    Tgq Guest

    Default USB HID - Maximum byte per loop

    Hi
    I'm playing with 16C745 and 18F2455 around USB HID comm
    USBJADEM.bas example comes with
    buffer Var Byte[8]

    How many bytes per loop can i do ? Byte[??]

    I've seen
    64 bytes of USB dual port RAM in 16C745 datasheet, is this the maximum transfer size ?

    Thanks
    Last edited by Tgq; - 22nd April 2005 at 16:34.

  2. #2


    Did you find this post helpful? Yes | No

    Default

    do you have any results with the 2455?

  3. #3
    Tgq's Avatar
    Tgq Guest


    Did you find this post helpful? Yes | No

    Default

    yes as i have no response i did my own experience
    i saw in JADESC.asm (descriptor header file) this line
    #define EP0_BUFF_SIZE 8 ; 8, 16, 32, or 64
    so my conclusion is that i can make a 64 bytes buffer per transfer
    i have not yet compiled such a program but i'll do it soon
    for the moment i see transfer speed with this HID/full speed example, playing with polling interval

Similar Threads

  1. LCD freeze
    By harryweb in forum mel PIC BASIC Pro
    Replies: 3
    Last Post: - 5th October 2009, 08:01
  2. Controlsystem for compact sporting (clay shooting)
    By Fredrick in forum mel PIC BASIC Pro
    Replies: 11
    Last Post: - 30th July 2009, 16:48
  3. byte compression
    By Norbert in forum mel PIC BASIC Pro
    Replies: 6
    Last Post: - 16th June 2007, 18:04
  4. Microcontroller with 2 way paging application problem
    By oneohthree in forum mel PIC BASIC Pro
    Replies: 30
    Last Post: - 20th April 2007, 17:27
  5. 16F877 RAM Question
    By Art in forum mel PIC BASIC Pro
    Replies: 8
    Last Post: - 6th August 2005, 11:47

Members who have read this thread : 0

You do not have permission to view the list of names.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts