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USB keyboard on TIva TM4C123H6pz

Hi all,

I am trying to implement a USB hid keyboard on my Tiva C series controllers. I am using one of the sample code given for TM4C123H6PZ and I am facing some problems with it.

1: When my controller is busy in stuff like reading adc and other stuff and when I press the key the interrupt is very slow and also in the keyboard callback function in HID key release case is called very slowly.

2: But when controller is not busy with other work it works fine and normal.

What should I do.

Regards

Dhanush Nair

  • Hi ,

    I am Also facing one problem with the Tiva controller.   My application takes around  130 KB code size and Ram size 27KB.  I am facing issues regarding the delay. When I am using the same delay functions in another code where the code size is around 30kB and ram size is 5KB the program works very fast whereas for above things it works slow. 

     That I want to say the delay is not constant it is changing according to code size. Please provide some solutions as my application is to be dispatched in few days. I am working on CCS . I guess there might be a problem with the compiler .

    Regards

    Dhanush

  • Monsieur Andy Neal will shortly arrive - advise of this "duplicate posting."