[U-Boot-Users] Interrupts in at91rm9200 u-boot.

Leonid
2007-07-12T02:25:16Z

Thank you for your reply, may I get hold on your code please?

Thanks,

Leonid.

-----Original Message-----
From: u-boot-users-bounces@lists.sourceforge.net
[mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf Of Joey
Oravec
Sent: Wednesday, July 11, 2007 10:22 AM
To: u-boot-users at lists.sourceforge.net
Subject: Re: [U-Boot-Users] Interrupts in at91rm9200 u-boot.

"Leonid" <Leonid@a-k-a.net> wrote in message
news:406A31B117F2734987636D6CCC93EE3C01CAD749 at ehost011-3.exch011.interme
dia.net...
> I'm trying to implement simple USB device in u-boot for at91rm9200 and

> as a first step I want to see that I can work with interrupts there. I

> added temporary device initialization code to usb_lowlevel_init():

I used the USB Device port as a console for my at91sam9261, acting as a
usbser.sys compatible usb-to-serial port. It was a lot easier to use a
polling interface because there was some Atmel sample code available.

During early startup, I add the usb driver with device_register(). Each
function polls the status register, which works out fine since uboot
calls tstc constantly to look for a new character or putc to display
something.
Finally I added a check for the device sense (power) to skip the
initialization completely if we know it's not connected to anything.

-joey

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