Hello Alan!
On Wed, 14 Feb 2007, Sven Anders wrote:
>> After I called
>> usb_fill_int_urb(dev->urb, udev,
>> usb_rcvintpipe(udev, int_in_endpointAddr),
>> dev->data, dev->datalen, atp_complete, dev, 1);
>>
>> the driver waits until the USB device (here the touchpad) starts sending
>> data (after I touched it). It does this continuously until I unload the
>> driver.
>
> Isn't that exactly what it's supposed to do? What good is a driver if it
> doesn't wait for the device to send data?
Right, it waits, but I does not if I want it to wait...
>> If I change the driver to not (re)call the function
>>
>> usb_submit_urb(dev->urb, GFP_ATOMIC);
>>
>> in the "atp_complete" function, it stops. But it does not wait (as the
>> first time) to restart the transfer. Is it possible to let the USB device
>> restart the transfer after I touched the pad again?
>
> Yes. :-)
>
> Your question isn't clear. It looks like you're asking how to restart the
> transfer. The answer is obvious: Change the driver back so that it _does_
> call usb_submit_urb() inside atp_complete().
Yes will call the 'usb_submit_urb' in each invocation of the 'atp_complete'
function. And if I do this the 'atp_complete' function will be called
continuously.
My problem is: If I decide (upon the data I received from the touchpad), that
there isn't a finger any longer on the pad, I want to stop the calling of the
'atp_complete' function until I'm sure the touchpad is touched again. Then I
want the data again till it's released again.
After I suspend and resume the computer this works. How can I archive this
within the interrupt-handler-code?
Another possibility (for me) would be to make the interval (in the untouched
times)
longer. Is this possible?
Regards
Sven
--
Sven Anders <[EMAIL PROTECTED]> () Ascii Ribbon Campaign
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