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Altera_Forum's avatar
Altera_Forum
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20 years ago

Communication between SL811 and NIOS

did anybody knows what this errors means????

# usb 1-1: new low speed USB device using address 4

usb 1-1: control timeout on ep0out

usb 1-1: control timeout on ep0out

usb 1-1: device not accepting address 4, error -110

usb 1-1: new low speed USB device using address 5

usb 1-1: control timeout on ep0out

usb 1-1: device not accepting address 5, error -108

i'm using the sl811hs

i still can not make it comunicate well... could anybody help me...

Jimmy

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    u can see the error code in include/asm-generic/errno.h

    then in documentation/usb/error-codes.txt to see the causation of the error. 110 means timeout.

    by the way,

    how many setup/wait/hold cycles while you setting the sl811 scheduling as user logic???
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    thanks,

    well... in the setup i have 2ns,

    in wait 65ns

    and in hold 5ns...

    based on the cypress application note about the interfacing with external processors...

    how you define your avalon slave addressing... as a memory or as a register

    jimmy
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    as register,

    i use altera cyclone board,and want to add usb interface.

    so it's too much problems.

    can you give me your usb interface module??

    gwb982@163.com

    thanks!!!