This library is developing aim for support various data bus interfaces and various displays.

This library start rewrite from Adafruit_GFX, TFT_eSPI, Ucglib and more...

Most tiny display in hobbiest electronics world support 8-bit SPI, but some require 9-bit SPI. As I know, it should be the first Arduino display library that can support ESP32 9-bit hardware SPI. It is very important to support the displays (e.g. HX8357B, ST7701, ...) that require 9-bit SPI interface.

Larger display most likely not support standalone SPI since it is not fast enough to refresh the full screen details. Most of them can use 8-bit/16-bit Parallel interface.

(not require touch the header files in libraries folder)

#include "Arduino_GFX_Library.h"
Arduino_DataBus *bus = new Arduino_HWSPI(16 /* DC */, 5 /* CS */);
Arduino_GFX *gfx = new Arduino_ILI9341(bus, 17 /* RST */);

gfx->begin();
gfx->fillScreen(BLACK);
gfx->setCursor(10, 10);
gfx->setTextColor(RED);
gfx->println("Hello World!");

This library is not putting speed at the first priority, but still paid much effort to make the display look smooth. Below are some figures compare with other 2 Arduino common display libraries.

• Arduino IDE: 1.8.10
• MCU: ESP32-PICO-D4
• PSRAM: disable
• Display: ILI9341
• Interface: SPI@40MHz
• Test time: 2019 Oct 13

• 8-bit and 9-bit hardware SPI (ESP32SPI)
• 8-bit hardware SPI (HWSPI)
• 8-bit and 9-bit software SPI (SWSPI)
• 8-bit parallel interface (ESP32PAR8)
• 16-bit parallel interface (ESP32PAR16)

• ESP32 I2S 8-bit/16-bit parallel interface
• FastLED

• M5Stack Core Family
• Odroid Go
• TTGO T-Watch
• Wio Terminal

• GC9A01 round display 240x240 [test video]
• HX8347C 240x320 [test video]
• HX8347D 240x320 [test video]
• HX8352C 240x400 [test video]
• HX8357B (9-bit SPI) 320x480 [test video]
• ILI9225 176x220 [test video]
• ILI9341 240x320 [test video]
• ILI9341 M5Stack 320x240 [test video]
• ILI9481 320x480 (18 bit color) [test video]
• ILI9486 320x480 (18 bit color) [test video]
• ILI9488 320x480 (18 bit color) [test video]
• JBT6K71 (8-bit Parallel) 240x320 [test video]
• R61529 (8-bit/16-bit Parallel) 320x480 [test video]
• SEPS525 160x128 [test video]
• SSD1283A 130x130 [test video]
• SSD1331 96x64 [test video]
• SSD1351 128x128 [test video]
• SSD1351 128x96
• ST7735 128x160 (various tabs) [test video]
• ST7735 128x128 (various tabs) [test video]
• ST7735 80x160 [test video]
• ST7789 TTGO T-Display 135x240 [test video]
• ST7789 240x240 [test video]
• ST7789 TTGO T-Watch 240x240 [test video]
• ST7789 240x320 [test video]
• ST7796 320x480 [test video]
• Canvas (framebuffer)
• Canvas_Indexed (for saving memory space)

• HX8357A 240x320 (first trial failed)
• LG4573 480x800 (first trial failed)
• ILI9806 480x800 (first trial failed)
• ST7701 480x800
• FastLED Martix supported by co-operate with Canvas
• Mono display supported by co-operate with Canvas
• Multi-color e-ink display supported by co-operate with Canvas
• ILI9486 320x480 (3 bit color) supported by co-operate with Canvas

• http://elm-chan.org/fsw/tjpgd/00index.html
• https://github.com/adafruit/Adafruit-GFX-Library.git
• https://github.com/adafruit/Adafruit_ILI9341.git
• https://github.com/adafruit/Adafruit-SSD1351-library.git
• https://github.com/ananevilya/Arduino-ST7789-Library.git
• https://github.com/BasementCat/arduino-tft-gif
• https://github.com/Bodmer/TFT_eSPI
• https://github.com/daumemo/IPS_LCD_R61529_FT6236_Arduino_eSPI_Test
• https://github.com/espressif/arduino-esp32.git
• https://github.com/gitcnd/LCDWIKI_SPI.git
• https://github.com/lovyan03/LovyanGFX.git
• https://github.com/lovyan03/M5Stack_JpgLoopAnime