Objective Development Forums

Re: timer polling

2013-06-25T15:38:47+02:00

I think v-usb just uses the interrupts for timing and the poll depends strictly on the function usbInterruptIsReady.

Code:

while (   !usbInterruptIsReady() ) //when not ready you must poll
{
   usbPoll();
}
//pulling has stopped tiuem to send
usbSetInterrupt( reportBuffer, 8);

Statistics: Posted by ulao — Tue Jun 25, 2013 3:38 pm

timer polling

2013-02-22T02:16:40+02:00

Hello,

as I am having some trouble by (probably) not calling usbPoll often enough (50ms max) I arrived at the following question:
Why is it not possible to call "usbPoll" from within a timer interrupt?

As christian said elsewhere:
"You can't call usbPoll() from a timer interrupt. You must call it from the main code."

Is this because they share some data they both use or are there other reasons?

Thanks!

Statistics: Posted by amx — Fri Feb 22, 2013 2:16 am