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Intel Edison Arduino Sketch Problem

rsc

Found a strange problem today.  Having the seedstudio TFT display running on the Intel Edison+Arduino board and trying to read the Analog voltages on A4 or A5 I get reading that are too high.

If I comment out the line:

Tft.TFTinit();  // init TFT library

Then the voltages read OK.

The TFT is not supposed to be doing anything with A4 and A5, but it looks like the processor turns on pull-ups during the initialization routine for the TFT display.

Any ideas?

Scott

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  • I tried several solutions, with no luck, the A5 pin reads 1.6V with a voltmeter, but the Edison reports 4.9V,

    So I purchased an ADC board for Edison from SparkFun to use for now. Later I'll poke around and see what's happening in the hardware.

    I'd like to have the TFT display and the analog GPIO all working together eventually.

    Scott

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  • I tried several solutions, with no luck, the A5 pin reads 1.6V with a voltmeter, but the Edison reports 4.9V,

    So I purchased an ADC board for Edison from SparkFun to use for now. Later I'll poke around and see what's happening in the hardware.

    I'd like to have the TFT display and the analog GPIO all working together eventually.

    Scott

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