This example demonstrates how to connect ILI9341-based display to modern ESP32 fork - TTGO-tDisplay in ESP-IDF. I use ESP32_TFT_library.
Alternatively you can use LVGL ported to ESP32 including various display and touchpad drivers
1. Run in terminal to configure
idf.py set-target esp32
2. configure menu
idf.py menuconfig
*Navigate to Component config -> TFT Display and set display and pin options or select a pre-defined display configuration for a kit.
Use TTGO T-DISPLAY for example
**My example utilizes external 320x240 ili9341 display and needs next changes in menuconfig and tfspi.h:
1. // ** Set the correct configuration for ESP-WROVER-KIT v4.1
2. Changes in tftspi.h file done to use ready config, eg. ESP-WROVER-KIT v4.1
3. Connect according to next scheme:
#define PIN_NUM_MISO 27 // SPI MISO
#define PIN_NUM_MOSI 21 // SPI MOSI
#define PIN_NUM_CLK 22 // SPI CLOCK pin
#define PIN_NUM_CS 15 // Display CS pin
#define PIN_NUM_DC 32 // Display command/data pin
#define PIN_NUM_RST 26 // GPIO used for RESET control
#define PIN_NUM_BCKL 13 // GPIO used for backlight control
#define PIN_BCKL_ON 1 // GPIO value for backlight ON
#define PIN_BCKL_OFF 0 // GPIO value for backlight OFF
3. Build project
idf.py -p /dev/tty.SLAB_USBtoUART clean build flash monitor
4. Have fun!
