I would like to connect my ESP32 (Lolin32 Lite Dev Board) to a "1.3 inch 7PIN SPI HD Full Color IPS TFT Display Screen ST7789 Drive IC 240*240". I am using the Arduino IDE.
I have not managed to find a ST7789 library for the ESP32. I have tried to port the Arduino_ST7789 library to the ESP32 to no avail (I am relatively new at embedded programming). I am currently writing my own library from scratch, but effort.
What code/libraries would I need to get started with the display?
My hardware connections are as follows
ESP32 -> Display
Pin GND -> GND
Pin 3.3V -> VCC
Pin 18 -> SCL
Pin 23 -> SDA
Pin 15 -> RES
Pin 13 -> DC
Pin 2 -> BLK
I figured out the solution, I wasn't able to use the Arduino_ST7789 library because i did not have the correct boards manager.
To get the correct manager go File->Preferences then scroll down to "Additional Boards Manager URLs" and add the following URL. https://dl.espressif.com/dl/package_esp32_index.json Note: If you have existing URLs don't delete them otherwise you will lose access. Add the board to your sketch by going Tools->Board->LoLin D32
Get the relevant libraries by downloading this https://github.com/adafruit/Adafruit-ST7735-Library as a .zip
Next add the library by going Sketch->Include Library->Add .ZIP Library...
Then go to File->Examples->Adafruit ST7785 ST7789 Library->Graphicstest
Use the following code above the setup function
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>
#define TFT_CS 5
#define TFT_RST 15 // Or set to -1 and connect to Arduino RESET pin
#define TFT_DC 13
#define TFT_MOSI 23 // Data out
#define TFT_SCLK 18 // Clock out
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);
float p = 3.1415926;
Sit back and enjoy some crazy displays