Fast SPI library for the ST7789 240x240 IPS display
YouTube video: https://youtu.be/GciLKcWQZK4
Significantly optimized for 16MHz AVR Arduino boards (2.5-5x faster than other libraries)
Achieved 6.9Mbps SPI transfer rate (at DIV2/16MHz clock)
Use "define COMPATIBILITY_MODE" - then the library should work on all Arduino compatible boards Remove above for the best performance on 16MHz AVR
Use "#define CS_ALWAYS_LOW" for LCD boards where CS pin is internally connected to the ground, it gives better performance
- invertDisplay()
- sleepDisplay()
- enableDisplay()
- idleDisplay() - saves power by limiting colors to 3 bit mode (8 colors)
- resetDisplay() - software reset
- partialDisplay() and setPartArea() - limiting display area for power saving
- setScrollArea() and setScroll() - smooth vertical scrolling
- fast drawImage() from RAM
- fast drawImage() from flash (PROGMEM)
| LCD pin | LCD pin name | Arduino |
|---|---|---|
| #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 |