>Do you know if INSERT/REMOVE interrupt works for SL811H??? the driver
>seems to have that interrupt enabled but when the cable is removed..
>nothing happen... is this interrupt for exactly what i thought i meant?
>(removing/insertion of cable)???
>
The INSERT/REMOVE irq works for the SL811HS. W
Pei
Do you know if INSERT/REMOVE interrupt works for SL811H??? the driver
seems to have that interrupt enabled but when the cable is removed..
nothing happen... is this interrupt for exactly what i thought i meant?
(removing/insertion of cable)???
thanks
--
>
>Do you know if it is ACCEPTABLE to turn of SOF interrupt when there
>is nothing to send
It is possible, but the driver needs a different method to keep track of the
frame number. I don't have the hardware specification with me, I think
hardware keep tracks the frame number also, all you
>that means the packet will be sent during next frame instead?
No, the sh_schedule_trans() got preempted when a xferdone irq occurs (Kinda
like suspended/blocked), and will continue after the irq has been handled.
(kinda like resume)
>can we just change the hc_interrupt to
>
>if ( && urb_st
that means the packet will be sent during next frame instead?
can we just change the hc_interrupt to
if ( && urb_state <= 0)
{
if (urb_state == 0) add_packet
else schedule_trans
Pei Liu wrote:
>
> >
> >but i thought sh_done_list returns (urb_state = -1) if it is d
>
>but i thought sh_done_list returns (urb_state = -1) if it is done???
>but in the hc_interrupt... it checks whether urb_state == 0... which
>means it would not try another packet???
Yes, I think I understand your concern. The sh_done_list returns a -1 when
it has completed the URB, in such cas
Do you know if it is ACCEPTABLE to turn of SOF interrupt when there
is nothing to send
a. would it stop SOF generation towards the function/device?
b. can the driver turns on SOF before having something to send???
and turn if off after all ack/tarnsactions are completed
this is to preve
>
>i am not sure if i understand this driver in depth the question
>i have is who can multiple "packets" be sent within the same frame?
Yes, you can send multiple USB transactions within the same frame.
>
>the interrupt service routine (hc_interrupt) seems to allow only ONE
>packet per f
thanks...
but i thought sh_done_list returns (urb_state = -1) if it is done???
but in the hc_interrupt... it checks whether urb_state == 0... which
means it would not try another packet???
Pei Liu wrote:
>
> >
> >i am not sure if i understand this driver in depth the question
> >i have is
Hello
You can have several bulk tansfert in one frame. And each device
may have an interrupt packet for a frame number. In the same frame
you may have one ore more isochronous, one or more interrupt, one
or more bulk and one or more configure packet and for one or more
device: You can have more th
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