USB problem ..

Hello,

I am facing specific problems in getting USB working on
mpc823.

sometimes it gets hanged as soon I write to USCOM (usb command)
register , also I am not able to set
"endpoint->tstate" equal to zero during initialisation.

I can see that it indefinitely keeps awaiting for idle
bit set in USBS(usb status register) register.

as per the MPC823 manual I should first operate on cpcr
(cpm command register) with usb commands before issuing
USCOM but their example code doesn't do that.

I am using only endpoint zero.

should I use my buffers in dpram or host memory?
any issues specific to this...

any pointer on this / known issues or working driver code..

with Regards,
Navin


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