MCU - ESP32-C3 SPI OLED

The seller marks the display as SSD1106. But, with a little research and some tests, I found that most 1.3 inch OLED screens are generally SH1106 mode.

esp32c3_SPI-OLED.excalidraw

/*-----------------------------------------------------------------------------
- Initial code for ESP32-C3 module
 
   MISO, GPI05 +------\_/------+ 5V
   MOSI, GPIO6 +               + GND
     SS, GPI07 +               + 3V3
    SDA, GPIO8 +   ESP32-C3    + GPIO4, ADC1_4, SCK
    SCL, GPI09 +               + GPIO3, ADC1_3
        GPIO10 +               + GPIO2, ADC1_2
   TXD, GPIO20 +               + GPIO1, ADC1_1
   RXD, GPIO21 +---------------+ GPIO0, ADC1_0
 
------------------------------------------------------------------------------*/

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SH110X.h>
 
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_CLK      4 // SCLK
#define OLED_MOSI     3 // SDA // Refer to GPIO pins no digital pins
#define OLED_RESET    2 // RES
#define OLED_DC       1
#define OLED_CS       0
 
 
// Note the class name change to SH1106G
// OLED 1.3 inch SPI model
Adafruit_SH1106G display = Adafruit_SH1106G(SCREEN_WIDTH, SCREEN_HEIGHT, &SPI, OLED_DC, OLED_RESET, OLED_CS);
 
void setup() {
  delay(250); // Critical for some displays to stabilize power
  SPI.begin(OLED_CLK, -1, OLED_MOSI, OLED_CS);
 
  if(!display.begin(0, true)) { // SH110X uses different begin parameters
    for(;;);
  }
 
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SH110X_WHITE);
  display.setCursor(0,0);
  display.println("Trying SH1106 Driver");
  display.display();
}
 
void loop() {}