This is the documentation for the latest (master) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

Buydisplay 3.5” TFT Touch Shield with Arduino adapter

Overview

The Buydisplay 3.5” TFT Touch Shield has a resolution of 320x480 pixels and is based on the ILI9488 controller. On the capacitive touch version this shield comes with a FT6236 touch controller. The Arduino adapter is required to use this shield. Note that both display and Arduino shields are sold in multiple combinations of interfaces. The current Zephyr driver only supports the 4-wire SPI interface.

More information about the shield and Arduino adapter can be found at the Buydisplay 3.5” TFT Touch Shield website 1 and Arduino adapter website 2.

Pin Assignments

Shield Connector Pin

Function

D5

Touch Controller IRQ (see note below)

D7

ILI9488 DC (Data/Command)

D10

ILI9488 Reset

D9

ILI9488 SPI CSn

D11

SPI MOSI (Serial Data Input)

D12

SPI MISO (Serial Data Out)

D13

SPI SCK (Serial Clock Input)

SDA

FT6236 SDA

SCL

FT6236 SCL

Note

Touch controller IRQ line is not connected by default. You will need to solder the 5 INT jumper to use it. You will also need to adjust driver configuration and its Device Tree entry to make use of it.

Requirements

This shield can only be used with a board which provides a configuration for Arduino connectors and defines node aliases for SPI and GPIO interfaces (see Shields for more details).

Programming

Set -DSHIELD=buydisplay_3_5_tft_touch_arduino when you invoke west build. For example:

# From the root of the zephyr repository
west build -b nrf52840dk_nrf52840 samples/gui/lvgl -- -DSHIELD=buydisplay_3_5_tft_touch_arduino