| .. _buydisplay_3_5_tft_touch_arduino: |
| |
| 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`_ and |
| `Arduino adapter website`_. |
| |
| 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 :ref:`shields` for more details). |
| |
| Programming |
| *********** |
| |
| Set ``-DSHIELD=buydisplay_3_5_tft_touch_arduino`` when you invoke |
| ``west build``. For example: |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/subsys/display/lvgl |
| :board: nrf52840dk_nrf52840 |
| :shield: buydisplay_3_5_tft_touch_arduino |
| :goals: build |
| |
| References |
| ********** |
| |
| .. target-notes:: |
| |
| .. _Buydisplay 3.5" TFT Touch Shield website: |
| https://www.buydisplay.com/lcd-3-5-inch-320x480-tft-display-module-optl-touch-screen-w-breakout-board |
| |
| .. _Arduino adapter website: |
| https://www.buydisplay.com/arduino-3-5-tft-lcd-touch-shield-serial-spi-example-for-mega-due |