Interrupt Endpoint Problem

[Anonymous]

Hello,

   

I write a simple code to evaluate FX3 Super Speed capabilities for the project ahead. My Idea is to implement a one BULK out endpoint for video data a 2 Interrupt (IN + OUT) for control/status from sensor unit. Bulk endpoint behave as expected but interrupt one produce a message :<INTERRUPT IN transfer
INTERRUPT IN transfer failed with Error Code:997>

   

Where I can get info what that means. (All example projects with use of interrupt endpoints I already had examined)

[Anonymous]

Hi, 

   

Please ensure that you are acking the data transfer done through the interupt endpoint. You can refer to the attached link to understand the similar error codes: https://msdn.microsoft.com/en-us/library/windows/desktop/ms681388(v=vs.85).aspx

[Anonymous]

For experiment I changed a interrupt endpoints to bulk one, (EP handlers are the same) and they work fine. Is there any special requirements for intrpt EP?