Adafruit 2.8” TFT Touch Shield v2¶
Overview¶
The Adafruit 2.8” TFT Touch Shield v2 with a resolution of 320x240 pixels, is based on the ILI9341 controller. This shield comes with a resistive (STMPE610 controller) or capacitive (FT6206 controller) touchscreen. While the Zephyr RTOS supports display output to these screens, touchscreen input is supported only on Capacitive Touch version. More information about the shield can be found at the Adafruit 2.8” TFT Touch Shield v2 website 1.
Pins Assignment of the Adafruit 2.8” TFT Touch Shield v2¶
Shield Connector Pin |
Function |
|---|---|
D4 |
MicroSD SPI CSn |
D7 |
Touch Controller IRQ (see note below) |
D8 |
STMPE610 SPI CSn (Resistive Touch Version) |
D9 |
ILI9341 DC (Data/Command) |
D10 |
ILI9341 SPI CSn |
D11 |
SPI MOSI (Serial Data Input) |
D12 |
SPI MISO (Serial Data Out) |
D13 |
SPI SCK (Serial Clock Input) |
SDA |
FT6206 SDA (Capacitive Touch Version) |
SCL |
FT6206 SCL (Capacitive Touch Version) |
Note
Touch controller IRQ line is not connected by default. You will need to
solder the ICSP_SI1 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=adafruit_2_8_tft_touch_v2 when you invoke west build. For example:
# From the root of the zephyr repository
west build -b nrf52840dk_nrf52840 samples/subsys/display/lvgl -- -DSHIELD=adafruit_2_8_tft_touch_v2