Hi, everyone,
Can someone give me some suggestions about sa1110 USB controller issues?
The problem is when I initialised the sa1110 USB, I turned on all the
interrupts (RESM,EIM,RIM,TIM and SUSM) in
UDCCR. So the UDCCR = 0x0. Then I tried to detect any possible interrupt
source from interrupt pending register ICPR (I am using polling method). It
is strange that there is no interrupt of IP 13 (UDC) at all when I connect
the USB cable. The host (running Windows 2000) tried to learn of the device,
but failed and could not finish the enumberation process.
Do I missed some neccessary steps?
Thanks for any help.
Paul Wang.
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