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LXR Audio Inputs

brendanclarkebrendanclarke
edited September 2015 in General
Hey All!
I was flipping through the LXR schematics (frontpanel, mainboard) and noticed that the switches on the audio out jacks (that sense whether they are plugged or not) - these are actually connected to ADC's on the mainboard... With a plug mod and Y-splitter, could these in theory be used as audio inputs - given a firmware that makes use of them as such?

Comments

  • julianjulian
    this is limited to the first batches with the green jumpers and a fully populated PCB.
    I first intended to use the mainboard as some kind of universal mainboard, thus gave it ADCs.
    The first firmware versions even had a define for 4 outs or 2in/outs in it.

    But since I never used them and realized it is not feasible to use a generic mainboard for multiple projects I ditched them later on.
  • brendanclarkebrendanclarke
    edited October 2015
    Ok, I'll have to dig out my spare mainboard and take a look! But these jack points seem to connect directly to the ADC pins on the cortex (or, at least 2 of them do if i'm not mistaken), not to an external DAC/ADC like the audio outputs.

    I haven't looked at the code that senses which audio outs are plugged, but I'm guessing it just reads the ADC pins as digital - could that be changed to read an analog in (albeit with the reduced, 12 bit resolution of the Cortex's built in ADC's)?

    Thanks!
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