Fast STM32 SPI/DMA library for ST7789 240x240 IPS display
YouTube video (AVR Arduino): https://youtu.be/GciLKcWQZK4
Significantly optimized for STM32 boards. Supports 36MHz SPI and DMA channel
Developed and tested using Roger's stm32duino and Arduino IDE 1.6.5
Use "#define COMPATIBILITY_MODE" - then the library doesn't use DMA
Use "#define CS_ALWAYS_LOW" for LCD boards where CS pin is internally connected to the ground, it gives little 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 drawImageF() from flash (PROGMEM)
| LCD pin | LCD pin name | Arduino |
|---|---|---|
| #01 | GND | GND |
| #02 | VCC | 3.3V |
| #03 | SCL | PA5 |
| #04 | SDA | PA7 |
| #05 | RES | PA0 or any digital |
| #06 | DC | PA1 or any digital |
| #07 | BLK | NC |
If you find it useful and want to buy me a coffee or a beer: