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Acquiring data from ADC (using interrupt) and sending out to PC

Alexandre Lara
Prodigy 40 points

Hi everyone,

I'm working with a TIVA TM4C1294XL, and I'm a newbie on all this stuff... However, I'd like to try to acquire data from a microphone using the TIVA's ADC (with interrupt), processing the data acquired and sending it out to my PC through USB. I've watched the Interrupt and the USB video tutorials, trying to catch the idea of that, but unfortunately I'm still kind of lost...

Would you all recommend any lecture or if possible any basic example of either how to acquire data using interrupt OR sending data to a PC ?

I don't want to get all done by anybody... I just want a tip of how to start.

Thank you all very much!

  • 0
    TI__Guru**** 244440 points
    Hello Alexandre,

    You can start with the ADC Example in TivaWare

    D:\ti\TivaWare_C_Series-2.1.1.71\examples\peripherals\adc

    What is important is to note that this may not be sufficient as you have to consider two important aspects of audio acquisition

    1. Signal conditioning is required before sampling so that the input signal is neither too small or too large to be sampled.
    2. Most audio require a sampling rate in the range of 40-90 KHz and in a format that is represented as 8, 16 bit audio.

    Regards
    Amit