Objective Development Forums 2012-03-21T12:13:09+02:00 https://forums.obdev.at/app.php/feed/topic/6523 2012-03-21T12:13:09+02:00 2012-03-21T12:13:09+02:00 https://forums.obdev.at/viewtopic.php?t=6523&p=21196#p21196 <![CDATA[Detecting if USB interrupt was called]]>
Is there any way to check if the USB interrupt was run? Some kind of counter? Is USB_COUNT_SOF directly correlated with the usb interrupt being called?

The reason I want to check this is that I run some highly time-dependent code that shouldn't really be interrupted. If it is, then I want to abort and try again (rather than waiting forever for something to happen and timing out).

It's possible I can do the timing-dependent stuff within 25 cycles (as mentioned in usbdrv.h -- although I am running at 20Mhz so have more than that) and switch off interrupts for that period, but I want to constantly run that code and not have to worry about switching on interrupts to let the USB stuff run its course.

Cheers,

-Tom

Statistics: Posted by xwhatsit — Wed Mar 21, 2012 12:13 pm

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