Use smaller display , vertical scrolling not working

[micropicostack]

I had a 240x240 screen laying around and wanted to use that, but the vertical scroll is not working. After digging into the datasheets I found that there is a separate register that can be used to define the scrolling area, by default it did not fit to the 240x240 display.

My fix would be to add this lien to st7789.c but as this is a separate git lib, but still owned by you guys then I would first ask if this could be a solution?

    uint16_t bfa = ST7789_MAX_HEIGHT - height;

    // VSCRDEF (33h): Vertical Scrolling Definition TFA - VSA - BFA
    st7789_cmd(0x33, (uint8_t[]){ 0x00, 0x00, ((height >> 8) & 0xFF), (height & 0xFF), ((bfa >> 8) & 0xFF), (bfa & 0xFF)}, 6);

[sandeepmistry]

Hi @micropicostack,

My fix would be to add this lien to st7789.c but as this is a separate git lib, but still owned by you guys then I would first ask if this could be a solution?

It would be best to propose an API as an issue or pull request in the following repo: https://github.com/ArmDeveloperEcosystem/st7789-library-for-pico

[stale[bot]]

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