Re: Communication between SL811 and NIOS

Altera_Forum · ‎06-17-2005

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: 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

Altera_Forum · ‎06-19-2005

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 · ‎06-20-2005

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 · ‎06-23-2005

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??

thanks!!!