Quad SPI Displays

Models

This display driver supports AMOLED and LCD displays with quad SPI interfaces, using the MIPI DBI interface.

This driver has been tested with the following displays:

• Lilygo T4-S3
• Lilygo T-Display S3 AMOLED
• JC4832W535 board
• JC3636W518 board

Usage

This component requires an ESP32 and the use of ESP-IDF. PSRAM is a requirement due to the size of the display buffer. A quad SPI bus interface must be configured.

# Example configuration entry

display:
  - platform: qspi_dbi
    model: RM690B0
    data_rate: 80MHz
    dimensions:
      width: 450
      height: 600
      offset_width: 16
    brightness: 255
    cs_pin: GPIOXX
    reset_pin: GPIOXX
    enable_pin: GPIOXX

Configuration variables:

• model (Required): One of

  • CUSTOM
  • RM67162
  • RM690B0
  • JC4832W535
  • JC3636W518
  • AXS15231

• init_sequence (Optional, A list of byte arrays): Specifies the init sequence for the display. This is required when using the CUSTOM model - but may be empty. If specified for other models this data will be sent after the pre-configured sequence.

• cs_pin (Required, Pin Schema): The chip select pin.

• reset_pin (Optional, Pin Schema): The RESET pin.

• enable_pin (Optional, Pin Schema): The display enable pin.

• brightness (Optional, int): A brightness value in the range 0-255

• update_interval (Optional, Time): The interval to re-draw the screen. Defaults to 5s .

• auto_clear_enabled (Optional, boolean): Whether to automatically clear the display data before each lambda call, or to keep the existing display content (must overwrite explicitly, e.g., only on data change). Defaults to true if a lambda or pages are configured, false otherwise.

• pages (Optional, list): Show pages instead of a single lambda. See Display Pages.

• id (Optional, ID): Manually specify the ID used for code generation.

• color_order (Optional): Should be one of rgb (default) or bgr .

• dimensions (Required): Dimensions of the screen, specified either as width x height (e.g 320x240 ) or with separate config keys.

  • height (Required, int): Specifies height of display in pixels.
  • width (Required, int): Specifies width of display.
  • offset_width (Optional, int): Specify an offset for the x-direction of the display, typically used when a display is smaller than the maximum supported by the driver chip. Default is 0
  • offset_height (Optional, int): Specify an offset for the y-direction of the display. Default is 0.

• rotation (Optional): Rotate the display presentation in software. Choose one of 0° , 90° , 180° , or 270° .

• transform (Optional): Transform the display presentation using hardware. All defaults are false . This option cannot be used with rotation .

  • swap_xy (Optional, boolean): If true, exchange the x and y axes. Not available for some chips
  • mirror_x (Optional, boolean): If true, mirror the x axis.
  • mirror_y (Optional, boolean): If true, mirror the y axis.

• data_rate (Optional, int): Set the data rate of the SPI interface to the display. One of 80MHz , 40MHz , 20MHz , 10MHz (default), 5MHz , 2MHz or 1MHz .

• spi_mode (Optional): Set the mode for the SPI interface to the display. Default is MODE0 .

• invert_colors (Optional, boolean): With this boolean option you can invert the display colors.

• draw_from_origin (Optional, boolean): When set, all partial display updates will start at the origin (0,0). Defaults to false.

• draw_rounding (Optional, int): Caters for display chips that require partial drawing to be aligned to certain boundaries. Default is 2, must be a power of 2.

• lambda (Optional, lambda): The lambda to use for rendering the content on the display. See Display Rendering Engine for more information.

Example configurations

Lilygo T4-S3

spi:
  id: quad_spi
  type: quad
  clk_pin: 15
  data_pins: [14, 10, 16, 12]

i2c:
  sda: 6
  scl: 7

touchscreen:
  - platform: cst226
    id: my_touchscreen
    interrupt_pin: 8
    reset_pin: 17

display:
  - platform: qspi_dbi
    model: RM690B0
    data_rate: 80MHz
    spi_mode: mode0
    dimensions:
      width: 450
      height: 600
      offset_width: 16
    color_order: rgb
    invert_colors: false
    brightness: 255
    cs_pin: 11
    reset_pin: 13
    enable_pin: 9

psram:
  mode: octal
  speed: 80MHz

Lilygo T-Display S3 AMOLED

spi:
  id: quad_spi
  type: quad
  clk_pin: 47
  data_pins:
    - 18
    - 7
    - 48
    - 5

i2c:
  sda: 3
  scl: 2

touchscreen:
  - platform: cst816
    id: my_touchscreen
    interrupt_pin:
      number: 21

display:
  - platform: qspi_dbi
    model: RM67162
    id: main_lcd
    dimensions:
      height: 240
      width: 536
    transform:
      mirror_x: true
      swap_xy: true
    color_order: rgb
    brightness: 255
    cs_pin: 6
    reset_pin: 17
    enable_pin: 38

JC4832W535 3.5" LCD Board

This rotates the display into landscape mode using software rotation.

psram:
  mode: octal
  speed: 80MHz

spi:
  id: display_qspi
  type: quad
  clk_pin: 47
  data_pins: [21,48,40,39]

power_supply:
  id: backlight_id
  pin: 1
  enable_on_boot: true

display:
  - platform: qspi_dbi
    model: JC4832W535
    data_rate: 40MHz
    rotation: 270
    dimensions:
      height: 480
      width: 320
    cs_pin:
      number: 45
      ignore_strapping_warning: true
    show_test_card: true

i2c:
  sda: 4
  scl: 8

touchscreen:
  platform: axs15231
  transform:
    swap_xy: true
    mirror_y: true

See Also

• Display Component
• API Reference