/*
 * SSD1306_oled.h
 *
 *  Created on: Apr 5, 2021
 *      Author: bartool
 */

#ifndef INC_SSD1306_OLED_H_
#define INC_SSD1306_OLED_H_

#define SSD1306_128_64 ///< DEPRECTAED: old way to specify 128x64 screen
//#define SSD1306_128_32 ///< DEPRECATED: old way to specify 128x32 screen
//#define SSD1306_96_16  ///< DEPRECATED: old way to specify 96x16 screen

#if defined SSD1306_128_64
#define SSD1306_LCDWIDTH 128 ///< DEPRECATED: width w/SSD1306_128_64 defined
#define SSD1306_LCDHEIGHT 64 ///< DEPRECATED: height w/SSD1306_128_64 defined
#endif
#if defined SSD1306_128_32
#define SSD1306_LCDWIDTH 128 ///< DEPRECATED: width w/SSD1306_128_32 defined
#define SSD1306_LCDHEIGHT 32 ///< DEPRECATED: height w/SSD1306_128_32 defined
#endif
#if defined SSD1306_96_16
#define SSD1306_LCDWIDTH 96  ///< DEPRECATED: width w/SSD1306_96_16 defined
#define SSD1306_LCDHEIGHT 16 ///< DEPRECATED: height w/SSD1306_96_16 defined
#endif

#define SSD1306_BUF_SIZE SSD1306_LCDHEIGHT * SSD1306_LCDWIDTH / 8

#define BLACK SSD1306_BLACK     ///< Draw 'off' pixels
#define WHITE SSD1306_WHITE     ///< Draw 'on' pixels
#define NORMAL SSD1306_NORMAL
#define INVERSE SSD1306_INVERSE ///< Invert pixels

#define SSD1306_ADDRESS 0x3C
#define SSD1306_TIMEOUT 100
#define SSD1306_BLACK 0   ///< Draw 'off' pixels
#define SSD1306_WHITE 1   ///< Draw 'on' pixels
#define SSD1306_NORMAL 2
#define SSD1306_INVERSE 3 ///< Invert pixels

#define SSD1306_MEMORYMODE 0x20          ///< See datasheet
#define SSD1306_COLUMNADDR 0x21          ///< See datasheet
#define SSD1306_PAGEADDR 0x22            ///< See datasheet
#define SSD1306_SETCONTRAST 0x81         ///< See datasheet
#define SSD1306_CHARGEPUMP 0x8D          ///< See datasheet
#define SSD1306_SEGREMAP 0xA0            ///< See datasheet
#define SSD1306_DISPLAYALLON_RESUME 0xA4 ///< See datasheet
#define SSD1306_DISPLAYALLON 0xA5        ///< Not currently used
#define SSD1306_NORMALDISPLAY 0xA6       ///< See datasheet
#define SSD1306_INVERTDISPLAY 0xA7       ///< See datasheet
#define SSD1306_SETMULTIPLEX 0xA8        ///< See datasheet
#define SSD1306_DISPLAYOFF 0xAE          ///< See datasheet
#define SSD1306_DISPLAYON 0xAF           ///< See datasheet
#define SSD1306_COMSCANINC 0xC0          ///< Not currently used
#define SSD1306_COMSCANDEC 0xC8          ///< See datasheet
#define SSD1306_SETDISPLAYOFFSET 0xD3    ///< See datasheet
#define SSD1306_SETDISPLAYCLOCKDIV 0xD5  ///< See datasheet
#define SSD1306_SETPRECHARGE 0xD9        ///< See datasheet
#define SSD1306_SETCOMPINS 0xDA          ///< See datasheet
#define SSD1306_SETVCOMDETECT 0xDB       ///< See datasheet

#define SSD1306_SETLOWCOLUMN 0x00  ///< Not currently used
#define SSD1306_SETHIGHCOLUMN 0x10 ///< Not currently used
#define SSD1306_SETSTARTLINE 0x40  ///< See datasheet

#define SSD1306_EXTERNALVCC 0x01  ///< External display voltage source
#define SSD1306_SWITCHCAPVCC 0x02 ///< Gen. display voltage from 3.3V

#define SSD1306_RIGHT_HORIZONTAL_SCROLL 0x26              ///< Init rt scroll
#define SSD1306_LEFT_HORIZONTAL_SCROLL 0x27               ///< Init left scroll
#define SSD1306_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL 0x29 ///< Init diag scroll
#define SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL 0x2A  ///< Init diag scroll
#define SSD1306_DEACTIVATE_SCROLL 0x2E                    ///< Stop scroll
#define SSD1306_ACTIVATE_SCROLL 0x2F                      ///< Start scroll
#define SSD1306_SET_VERTICAL_SCROLL_AREA 0xA3             ///< Set scroll range

#define SSD1306_SENDALL		0
#define SSD1306_SENDPAGE	1

void SSD1306_Init(I2C_HandleTypeDef *i2c);
void SSD1306_display_all(void);
uint8_t SSD1306_display_page(void);
void SSD1306_clear(uint8_t color);

void SSD1306_set_pixel(uint8_t x, uint8_t y, uint8_t bw);
void SSD1306_write_to_buffer(const uint8_t* data, uint8_t width, uint8_t height, int8_t pos_x, int8_t pos_y, uint8_t color);
void SSD1306_clear_buffer(uint8_t width, uint8_t height, int8_t pos_x, int8_t pos_y, uint8_t color);

#ifdef TEST
extern uint8_t buffer_oled[SSD1306_BUF_SIZE];
#endif

#endif /* INC_SSD1306_OLED_H_ */