Display driver library for RP2040 pico-sdk
Example code here

ST7735 and ST7739 in SPI mode
ILI9341 in SPI mode

Add the pico-displayDrivs subdirectory to the CMakeLists.txt of your project and include the needed libraries.

Check the readme of each driver in its corresponding folder.

This package includes a graphics library, based on Adafruit-GFX-Library. It supports drawing basic shapes, characters and using custom fonts.

Note that the gfx.h header contains a convenience macro GFX_RGB565(R, G, B) to create a 16-bit 'rgb565' colour value from individual 8-bit components.

By default, the GFX library writes pixels directly to the screen. If desired, an internal framebuffer can be used (which is recomended in cases where speed is desired). The framebuffer is created using GFX_createFramebuf(), which automatically tells the library to write to the framebuffer. The buffer can then be pushed to the screen by calling GFX_flush(). If needed, the buffer can be destroyed by calling GFX_destroyFramebuf(). Doing so will revert to writing pixels directly to the screen.

GFX_drawPixel(int16_t x, int16_t y, uint16_t color); draws a single pixel

GFX_drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size_x, uint8_t size_y); puts a single character on screen
GFX_write(uint8_t c); writes a character to the screen, handling the cursor position and text wrapping automatically
GFX_setCursor(int16_t x, int16_t y); places the text cursor at the specified coordinates
GFX_setTextColor(uint16_t color); sets the text color
GFX_setTextBack(uint16_t color); sets the text background color
GFX_setFont(const GFXfont *f); sets the used font, using the same format as Adafruit-GFX-Library
GFX_printf prints formatted text

GFX_fillScreen(uint16_t color); fills the screen with a specified color
GFX_setClearColor(uint16_t color); sets the color the screen should be cleared with
GFX_clearScreen(); clears the screen, filling it with the color specified using the function above

GFX_drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color); draws a line from (x0,y0) to (x1,y1)
GFX_drawFastHLine(int16_t x, int16_t y, int16_t l, uint16_t color); draws a horizontal line
GFX_drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color); draws a vertical line

GFX_drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color); draws a rectangle
GFX_drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color) draws a circle
GFX_fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color); draws a filled rectangle
GFX_fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color); draws a filled circle