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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/subsys/display/lvgl -- -DSHIELD=buydisplay_3_5_tft_touch_arduino