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!!! UNDER CONSTRUCTION !!!

ESP32-H2 Super Mini and esp32 board package 3.0.4 and four ST7789 SPI displays

Cheap Aliexpress displays, tested with an ESP32-H2 Super Mini, Arduino IDE 2.3.2 and a modified TFT_eSPI 2.5.43 .

Board Package : esp32 3.0.4

Arduino IDE Board : ESP32-H2 Dev Module

USB CDC On Boot : Enabled

Upload problem :

  • Method 1: Press and hold BOOT while connecting.
  • Method 2: Press and hold the BOOT button then press the RESET button.

All four IPS displays worked stable at 80MHz (40MHz).

ESP32-H2 ESP32-H2 Super Mini

ESP32-H2

Benchmark Benchmark with the display 240x280

Connections for nanoESP32-H2 Super Mini and all ST7789 IPS displays

GPIO TFT Description
0 CS CS
25 SDA MOSI
11 --- MISO ( not used )
10 SCL SCLK
1 DC DC
3 RST Reset
2 BLK 3.3V or PWM-Pin
VCC 3.3V
GND GND

Pinout Pinout ESP32-H2 Super Mini

Configuring the TFT_eSPI

Edit or copy the setup file Setup434_H2_ST7789_170x320.h or Setup435_H2_ST7789_240x280.h or Setup436_H2_ST7789_240x320.h or Setup437_H2_ST7789_240x240.h :

#define USER_SETUP_ID 434 // 435 // 436 // 437

// Driver
#define ST7789_DRIVER     // Configure all registers

#define TFT_WIDTH  170    // 240 // 240 // 240
#define TFT_HEIGHT 320    // 280 // 320 // 240

//#define TFT_RGB_ORDER TFT_BGR  // only for display 240x320 
//#define TFT_INVERSION_ON       // only for display 240x320

//Pins ESP32-H2
#define TFT_CS      0
#define TFT_MOSI   25
#define TFT_MISO   11
#define TFT_SCLK   10
#define TFT_DC      1
#define TFT_RST     3   // Set TFT_RST to -1 if display RESET is connected to ESP32 board EN
//#define TFT_BL    2   // LED backlight

#define LOAD_GLCD
#define LOAD_FONT2
#define LOAD_FONT4
#define LOAD_FONT6
#define LOAD_FONT7
#define LOAD_FONT8
//#define LOAD_FONT8N
#define LOAD_GFXFF

#define SMOOTH_FONT 

//#define SPI_FREQUENCY  20000000
//#define SPI_FREQUENCY  27000000  // same speed as with 20MHz
//#define SPI_FREQUENCY  40000000
#define SPI_FREQUENCY  80000000    // same speed as with 40MHz

//#define SPI_READ_FREQUENCY  20000000
//#define SPI_TOUCH_FREQUENCY  2500000
//#define SUPPORT_TRANSACTIONS

Edit or copy the file User_Setup_Select.h

Modifying the TFT_eSPI

The ESP32-H2 and ESP32-C6 are an upgraded ESP32-C3, so the code of the library TFT_eSPI works here too (but slower).

Four files were modified to verify this :

Test programs

All files can be found above in the folder Arduino.