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  • August 25, 2016 at 6:50 pm #3945
    dasbrow
    Participant

    Would anyone know if there is a way to disable the backlight in the demo that Carmine has made for this board? or even dime it?

    Thanks!

    August 25, 2016 at 8:10 pm #3948
    Carmine Noviello
    Keymaster

    The backlight of the LCD provided by STM32F746-Discovery boards is driven by a dedicated IC, the STLD40D from ST. The enable pin of this IC is connected to the PK_3 pin of the STM32F7 MCU. According the STLD40D datasheet the enable pin can be used to dim the backlight, by suppling a PWM signal (see Fig. 14 at page 10).

    August 25, 2016 at 9:39 pm #3950
    Carmine Noviello
    Keymaster

    I’ve added a sample project here:

    https://github.com/cnoviello/stm32-discof7/tree/master/stm32-discof7-lcddim

    It simply dims the LCD backlight when the USER BUTTON (blue one) is pressed.

    August 26, 2016 at 10:49 pm #3956
    dasbrow
    Participant

    Thanks a bunch! Hopefully i will get around to testing this out tonight!

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