Uploaded September 2019 | Updated September 2026, 2 weeks ago

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Fast SPI library for the ST7789 240x240 IPS display

Significantly optimized for 16MHz AVR Arduino boards (2.5-5x faster than other libraries)
Achieved 6.9Mbps SPI transfer rate (at DIV2/16MHz clock)

Connections for displays without CS pin (only 6 wires required):

#01 GND - GND
#02 VCC - VCC (3.3V only!)
#03 SCL - D13/SCK
#04 SDA - D11/MOSI
#05 RES - D8 or any digital
#06 DC - D7 or any digital
#07 BLK - NC

The code:
github.com/cbm80amiga/Arduino_ST7789_Fast

If you find it useful and you want to buy me a coffee or a beer:
paypal.me/cbm80amiga