klips/esp/cpp/07_lcd-panel/main/ssd1306.h

#ifndef SSD1306_H
#define SSD1306_H

#include <esp_lcd_panel_ssd1306.h>

#include "panel_device.h"

// According to SSD1306 datasheet
// https://www.digikey.com/en/products/detail/winstar-display/WEA012864DWPP3N00003/20533255
// Bit number used to represent command and parameter
#define SCREEN_WIDTH           128  // OLED display width, in pixels.
#define SCREEN_HEIGHT          64  // OLED display height, in pixels.
#define LCD_H_RES              SCREEN_WIDTH
#define LCD_V_RES              SCREEN_HEIGHT
#define I2C_HW_ADDR            0x3C
#define LCD_PIXEL_CLOCK_HZ     (400 * 1000)
#define LCD_CMD_BITS           8
#define LCD_PARAM_BITS         8

#define PIN_RST                -1

class SSD1306 : public IPanelDevice {
public:
  // Constructors allow overriding ssd1306 config.
  explicit SSD1306(i2c_master_bus_handle_t i2c) :
      SSD1306(i2c, {.height = SCREEN_HEIGHT}) { }

  explicit SSD1306(i2c_master_bus_handle_t i2c,
                   esp_lcd_panel_ssd1306_config_t config,
                   int width = SCREEN_WIDTH,
                   int height = SCREEN_HEIGHT);

  virtual ~SSD1306() = default;

  // The configuration structure specific to the SSD1306.
  esp_lcd_panel_ssd1306_config_t ssd1306_config_;

  // For LV_COLOR_FORMAT_I1 we need an extra buffer to hold the converted data.
  static uint8_t oled_buffer_[LCD_H_RES * LCD_V_RES / 8];

private:
  void init_panel(esp_lcd_panel_dev_config_t &config,
                  esp_lcd_panel_io_handle_t io,
                  esp_lcd_panel_handle_t &panel) override;

};

#endif // SSD1306_H