[Question] - How to access framebuffer?

[paaspaas00]

Hi, I'm working on a simple VNC server for one of the boards, the esp32-8048S050C.
I need to have access to the framebuffer to reply properly to VNC clients.
In the readme here https://github.com/rzeldent/platformio-espressif32-sunton/tree/main?tab=readme-ov-file#psram
you imply that for boards with direct io (like mine I think) there's actually a framebuffer at all times.
Is there a way to access it (maybe with some kind of mutex from another FreeRTOS task) easily or at all? Could you provide a little guidance?

Thank you!

[rzeldent]

The framebuffer is in the LVGL drivers. In lvgl_lcd_init the framebuffer is created:

//  Create drawBuffer
    uint32_t drawBufferSize = sizeof(lv_color_t) * LVGL_BUFFER_PIXELS;
    void *drawBuffer = heap_caps_malloc(drawBufferSize, LVGL_BUFFER_MALLOC_FLAGS);
    lv_display_set_buffers(display, drawBuffer, NULL, drawBufferSize, LV_DISPLAY_RENDER_MODE_PARTIAL);

You can access it, just reading it should not hurt... The format is R5G6B5