Disable USB Interrupt

vlad2 · ‎2014-06-11

Posted on June 11, 2014 at 15:26

Hello,

I use STM32F0x2_USB-FS-Device_Lib V1.0.0, in my application exist time critical section, where I need disable interrupt from USB. I try call NVIC_DisableIRQ(USB_IRQn)/NVIC_EnableIRQ(USB_IRQn), but looks like I loose data transfered to host.

How to correctly disable USB interrupt?

#usb-interrupt

Tesla DeLorean · ‎2014-06-11

Posted on June 11, 2014 at 17:10

Well how long does this ''time critical'' stuff take, is the problem that it doesn't service the IRQ in a timely fashion?

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vlad2 · ‎2014-06-11

Posted on June 11, 2014 at 18:40

''Time critical'' ~10ms, I receive data with external clock and any IRQ may causes failure.

I think I guessed what could be the problem.

When I enable IRQ after pause, interrupt flag is set ( I skip 10 requests), but host already not listening me and transmitted data is lost. Probably I need reset interrupt flag and then enable IRQ.