Announcement

Collapse
No announcement yet.

IOD-09 gfx.BacklightOn(false) not working

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • IOD-09 gfx.BacklightOn(false) not working

    Hi,

    Can someone tell me if they have backlight control working on the IOD-09? It won't work for me.
    I wonder if it isn't enabled in the hardware design but was left in the library by mistake?

    Thanks, Laurence

  • #2
    Hi Laurence

    Welcome to the forum,

    The Backlight control was purposedly left in the GFX4dIoD9 library as a backward / forward compatibilty function with the gen4-IoD's but serves no function in the IoD-09's

    I hope this helps

    Paul

    Comment


    • #3
      Thanks Paul. Is there any way of controlling the display power from the ESP? I spotted GFX4dIoD9_DISPOFF in the header file - is that used?

      Comment


      • #4
        Hi,

        Sorry no, it is just there for compatibility. If you take a look at the schematic for the IoD-09 you will notice the backlight is simply tied to power instead of a GPIO leaving a spare GPIO for the user.

        Click image for larger version

Name:	iod09schematic.png
Views:	1
Size:	26.5 KB
ID:	63200

        I hope this helps

        Best regards

        Paul

        Comment

        Working...
        X