CONFIG_LVGL_VDB_SIZE¶

Rendering buffer size

Type: int

Help¶

Size of the buffer used for rendering screen content as a percentage of total display size.

Direct dependencies¶

(LVGL && DISPLAY && SHIELD_ADAFRUIT_2_8_TFT_TOUCH_V2) || (LVGL && DISPLAY && SHIELD_BUYDISPLAY_2_8_TFT_TOUCH_ARDUINO) || (LVGL && DISPLAY && SHIELD_BUYDISPLAY_3_5_TFT_TOUCH_ARDUINO) || (LVGL && DISPLAY && (SHIELD_SSD1306_128X64 || SHIELD_SSD1306_128X64_SPI || SHIELD_SSD1306_128X32 || SHIELD_SH1106_128X64)) || (LVGL && DISPLAY && (SHIELD_WAVESHARE_EPAPER_GDEH029A1 || SHIELD_WAVESHARE_EPAPER_GDEH0213B1 || SHIELD_WAVESHARE_EPAPER_GDEH0213B72 || SHIELD_WAVESHARE_EPAPER_GDEW075T7 || SHIELD_WAVESHARE_EPAPER_GDEH0154A07)) || (LVGL && (BOARD_MIMXRT1050_EVK || BOARD_MIMXRT1050_EVK_QSPI)) || (LVGL && (BOARD_MIMXRT1060_EVK || BOARD_MIMXRT1060_EVK_HYPERFLASH)) || (LVGL && BOARD_MIMXRT1064_EVK) || (LVGL && DISPLAY && SHIELD_ADAFRUIT_2_8_TFT_TOUCH_V2) || (LVGL && DISPLAY && SHIELD_BUYDISPLAY_2_8_TFT_TOUCH_ARDUINO) || (LVGL && DISPLAY && SHIELD_BUYDISPLAY_3_5_TFT_TOUCH_ARDUINO) || (LVGL && DISPLAY && (SHIELD_SSD1306_128X64 || SHIELD_SSD1306_128X64_SPI || SHIELD_SSD1306_128X32 || SHIELD_SH1106_128X64)) || (LVGL && DISPLAY && (SHIELD_WAVESHARE_EPAPER_GDEH029A1 || SHIELD_WAVESHARE_EPAPER_GDEH0213B1 || SHIELD_WAVESHARE_EPAPER_GDEH0213B72 || SHIELD_WAVESHARE_EPAPER_GDEW075T7 || SHIELD_WAVESHARE_EPAPER_GDEH0154A07)) || LVGL

(Includes any dependencies from ifs and menus.)

Defaults¶

64
64
32
64
16 if SHIELD_WAVESHARE_EPAPER_GDEW075T7
16
16
16
16
64
64
32
64
16 if SHIELD_WAVESHARE_EPAPER_GDEW075T7
16
10

Kconfig definitions¶

At <Zephyr>/boards/shields/adafruit_2_8_tft_touch_v2/Kconfig.defconfig:42

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:23 → <BuildDir>/Kconfig/Kconfig.shield.defconfig:1

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 64
    depends on LVGL && DISPLAY && SHIELD_ADAFRUIT_2_8_TFT_TOUCH_V2

At <Zephyr>/boards/shields/buydisplay_2_8_tft_touch_arduino/Kconfig.defconfig:42

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:23 → <BuildDir>/Kconfig/Kconfig.shield.defconfig:1

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 64
    depends on LVGL && DISPLAY && SHIELD_BUYDISPLAY_2_8_TFT_TOUCH_ARDUINO

At <Zephyr>/boards/shields/buydisplay_3_5_tft_touch_arduino/Kconfig.defconfig:42

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:23 → <BuildDir>/Kconfig/Kconfig.shield.defconfig:1

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 32
    depends on LVGL && DISPLAY && SHIELD_BUYDISPLAY_3_5_TFT_TOUCH_ARDUINO

At <Zephyr>/boards/shields/ssd1306/Kconfig.defconfig:41

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:23 → <BuildDir>/Kconfig/Kconfig.shield.defconfig:1

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 64
    depends on LVGL && DISPLAY && (SHIELD_SSD1306_128X64 || SHIELD_SSD1306_128X64_SPI || SHIELD_SSD1306_128X32 || SHIELD_SH1106_128X64)

At <Zephyr>/boards/shields/waveshare_epaper/Kconfig.defconfig:45

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:23 → <BuildDir>/Kconfig/Kconfig.shield.defconfig:1

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 16 if SHIELD_WAVESHARE_EPAPER_GDEW075T7
    default 16
    depends on LVGL && DISPLAY && (SHIELD_WAVESHARE_EPAPER_GDEH029A1 || SHIELD_WAVESHARE_EPAPER_GDEH0213B1 || SHIELD_WAVESHARE_EPAPER_GDEH0213B72 || SHIELD_WAVESHARE_EPAPER_GDEW075T7 || SHIELD_WAVESHARE_EPAPER_GDEH0154A07)

At <Zephyr>/boards/arm/mimxrt1050_evk/Kconfig.defconfig:66

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 16
    depends on LVGL && (BOARD_MIMXRT1050_EVK || BOARD_MIMXRT1050_EVK_QSPI)

At <Zephyr>/boards/arm/mimxrt1060_evk/Kconfig.defconfig:63

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 16
    depends on LVGL && (BOARD_MIMXRT1060_EVK || BOARD_MIMXRT1060_EVK_HYPERFLASH)

At <Zephyr>/boards/arm/mimxrt1064_evk/Kconfig.defconfig:62

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 16
    depends on LVGL && BOARD_MIMXRT1064_EVK

At <Zephyr>/boards/shields/adafruit_2_8_tft_touch_v2/Kconfig.defconfig:42

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 64
    depends on LVGL && DISPLAY && SHIELD_ADAFRUIT_2_8_TFT_TOUCH_V2

At <Zephyr>/boards/shields/buydisplay_2_8_tft_touch_arduino/Kconfig.defconfig:42

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 64
    depends on LVGL && DISPLAY && SHIELD_BUYDISPLAY_2_8_TFT_TOUCH_ARDUINO

At <Zephyr>/boards/shields/buydisplay_3_5_tft_touch_arduino/Kconfig.defconfig:42

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 32
    depends on LVGL && DISPLAY && SHIELD_BUYDISPLAY_3_5_TFT_TOUCH_ARDUINO

At <Zephyr>/boards/shields/ssd1306/Kconfig.defconfig:41

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 64
    depends on LVGL && DISPLAY && (SHIELD_SSD1306_128X64 || SHIELD_SSD1306_128X64_SPI || SHIELD_SSD1306_128X32 || SHIELD_SH1106_128X64)

At <Zephyr>/boards/shields/waveshare_epaper/Kconfig.defconfig:45

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:24

Menu path: (Top)

config LVGL_VDB_SIZE
    int
    default 16 if SHIELD_WAVESHARE_EPAPER_GDEW075T7
    default 16
    depends on LVGL && DISPLAY && (SHIELD_WAVESHARE_EPAPER_GDEH029A1 || SHIELD_WAVESHARE_EPAPER_GDEH0213B1 || SHIELD_WAVESHARE_EPAPER_GDEH0213B72 || SHIELD_WAVESHARE_EPAPER_GDEW075T7 || SHIELD_WAVESHARE_EPAPER_GDEH0154A07)

At <Zephyr>/lib/gui/lvgl/Kconfig.memory:68

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:33 → <Zephyr>/lib/Kconfig:14 → <Zephyr>/lib/gui/Kconfig:4 → <Zephyr>/lib/gui/lvgl/Kconfig:25

Menu path: (Top) → Additional libraries → LittlevGL GUI library → Memory manager settings

config LVGL_VDB_SIZE
    int "Rendering buffer size"
    range 1 100
    default 10
    depends on LVGL
    help
      Size of the buffer used for rendering screen content as a percentage
      of total display size.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)

Kconfig reference

nRF Connect SDK