(See the README.md file in the upper level 'examples' directory for more information about examples.)

This example aims to show how to use SPI Host driver API, like spi_transaction_t and spi_device_queue.

If you are looking for code to drive LCDs in general, rather than code that uses the SPI master, that may be a better example to look at as it uses ESP-IDFs built-in LCD support rather than doing all the low-level work itself, which can be found at examples/peripherals/lcd/tjpgd/

• An ESP development board, with SPI LCD

Connection :

Depends on boards. Refer to spi_master_example_main.c No wiring is required on ESP-WROVER-KIT

Run idf.py -p PORT flash monitor to build, flash and monitor the project.

(To exit the serial monitor, type Ctrl-].)

See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.

On ESP-WROVER-KIT there will be:

LCD ID: 00000000
ILI9341 detected.
LCD ILI9341 initialization.

At the meantime ESP32 will be displayed on the connected LCD screen.

For any technical queries, please open an [issue] (https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.