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hi,
i am faced with a strange behaviour of this UTMI, maybe someone have already seen this problem and know how to resolve it :
For sending data from an SIE to the PC via USB, I use the UTMI. I have problems with the Tx register
I assert the Txvalid signal to indicate that i want to send...
hi,
i need to connect two hubs, so my configuration is
pc <-> hub <-> hub <-> low speed device.
i have a question : when a pc sends data to low device via a hub, it sends a PRE PID, to tell the hub that the data are low speed . then the hub sends the data at low speed. but when it comes to...
usb preamble
thanks to your help i could set up the HUB i'm using.
I'm using usb host cypress sl811hs connected to atmel's hub at43301;
now i have a problem to communicate to a slow speed device (mouse) connected to the hub
this is what i do :
get device descriptor of the hub
get configuration...
usb enumeration timing
Hello;
I have problems with doing the enumeration process via a hub :
i am using Cypress embeded host controller SL811HS to which usb port i have connected atmel AT43301 hub as a root hub.
When i plug any device to the host, an interrupt enable me to scan the new device...
Hello,
i have troubles with FLIP software from atmel to program the at89c5131 evaluation board.
When i plug the USB cable, the PC respond that the USB device is unknown, wherase in the FLIP manual it is uppose to recognise at89c5131 and propose me to install the driver provided with FLIP.
So...
And, if not, is there a microcontroler that can respond to any usb adress, but also that store the address in a register where i can be read ?
my problem is that i have to immediatly answer to the host, as if i was the peripherial device, then transmit the data via rs485 to another...
hello,
does anybody know how to prevent the at89c5131 to filter the usb adress ?
I need it to respond to any message sent by the host, whatever the address in the token packet...
thanks
at89c5131 usb
hello,
i'm trying to understand how the at89c5131 usb controller works.
I've downloaded the c code examples at atmel site, but there is something i don't get : where are implemented the functions like usb_read_byte, Usb_clear_rx, usb_rx_complete.... ?
I can see they are used a...
don't have the code with me right now but i computed it in matlab this year.
I think there is a matlab fonction that does that...
i'll check it later and tell you
unfortunately i think that won't work, because i need to re convert to usb signals at the end of the rs485 line. I need that because i'll connect a usb Hub at the end. So the tranciever will have to be transparent concerning the usb signals, hence no driver, no enumeration, no endpoint...
anyone...
usb rs 485
hello everyone,
i am now working on a project where i need to do a kind of usb expender :
usb mouse connected on card 1 , then convert the signal to rs485 through a cat5 cable (100 meters) then convert to usb again and plug to the pc
i wanted to use the at89c5131 from atmel, but...
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