Block write pixel alignment

[fbiego]

Your display requires rounding the area coordinates.
See the answer here;

LVGL 9.2 + esp32-s3 + display axs15321b

I think you may need a rounder event callback when using PARTIAL refresh. Some display drivers require the update area to be aligned to even pixel boundaries void rounder_event_cb(lv_event_t *e) { lv_area_t *area = lv_event_get_invalidated_area(e); uint16_t x1 = area->x1; uint16_t x2 = area->x2; uint16_t y1 = area->y1; uint16_t y2 = area->y2; // round the start of coordinate down to the nearest 2M number area->x1 = (x1 >> 1) << 1; area->y1 = (y1 >> 1) << 1; // round the end …