Test Pattern on NHD-3.5-320240MF-ATXL#-T-1 not working



  • Valin6210

    The Touchscreen is receiving the SPI data and setting the display, however the display remains black until a push-button-reset resets the PIC processor, then the test pattern shows up until the PIC comes back on-line. 

    As I said before the only pins that are currently constrained/controlled are the SPI interface, RESET and CLKIN.  I have tried grounding all of those pins and none of them cause the display to turn on.

    Could the floating of either the VSYNC/HSYNC or any of the RGB lines be causing this behavior?

    Update 2: had the Backlight PWM turned off, so screen was dark, turned it up and lo and behold the test pattern appeared...sometimes it's the little things.
  • Ted M.
    NHD Staff
    Hi Valin6210,

    Thanks for the update. It's good to hear you have this working!


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