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How to increase polling interval of USB Keyboard Device example?

Question asked by Omkar Karmalkar on Mar 15, 2017
Latest reply on May 14, 2017 by Daniel Chen

I am currently using USB Keyboard Device example from MQX 4.2.0. I have successfully integrated this example into current MQX 4.0.0 and I am able to send data to my laptop on USB port. The only problem I am facing is it is continuously sending NULL keys when no key is pressed causing unwanted traffic on USB bus. When I checked packets coming from standard USB keyboard on Wireshark, it does not send anything unless any key is pressed. How do I make the Keyboard example work like standard keyboard? I suspect this is the issue with the initialization of USB device.