Any quick way to invert the lcd screen graphics?

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31 Jan 2020 19:07 - 31 Jan 2020 19:10 #75864 by WorldScott
I purchased this replacement lcd panel for my T8SG v1: www.aliexpress.com/item/33039792594.html (image attached). It produces graphics with a default black background thus producing white text. Is there any way to inverse Deviation's display to have it be the standard white background with black text?

Thank you,

-Scott
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Last edit: 31 Jan 2020 19:10 by WorldScott.

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01 Feb 2020 06:28 - 01 Feb 2020 06:29 #75867 by vlad_vy
Display reverse is not supported by any way. You can build firmware by self with changed line of display code.

LCD_Cmd(0xA6); // Normal display
to
LCD_Cmd(0xA7); // Reverse display

for nightly builds it's
src\target\drivers\display\spi\128x64x1_nt7538.h
...
inline static void _lcd_init()
{
    volatile int i;
    LCD_Cmd(0xA6);      // Normal display
...
Last edit: 01 Feb 2020 06:29 by vlad_vy.

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01 Feb 2020 13:54 - 01 Feb 2020 13:56 #75869 by WorldScott
Replied by WorldScott on topic Any quick way to invert the lcd screen graphics?
vlad_vy, thank you for your quick and helpful response. That seems fairly straightforward to do. I will see about pursuing that. For others wondering about this question I've also found that one can change from a positive to a negative image by changing the orientation of the polarizer on the lcd screen similar to this:
Last edit: 01 Feb 2020 13:56 by WorldScott.

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02 Feb 2020 00:48 #75870 by eried
Nice! Post any success

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