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IN MQX USB DEVICE STACK VBUS INTERRUPT HANDLLING

Question asked by pankaj kharche on Apr 2, 2014
Latest reply on Apr 9, 2014 by Kan_Li

Hi,

 

I am using the mqx usb device stack for my usb application, I have used on chip usb otg controller and have connected the Vbus pin to IRQ6 pin of processor mcf54418 .

 

I have initialized the ISR  for IRQ6 pin and on plugging in the USB connector, I get the VBUS interrupt and control goes to the ISR function as expected.

 

My question is, how to indicate this to the processor that a valid VBUS is available ? What bits in which register needs to be changed for this ?

After this, I suppose that I need to pull up the D+ pin so that the Host can send the reset signal and begin enumaration process.

 

Please let me know if I am missing something.

 

Thank you for your time.

Panks

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