/*
 *  Created: 19.06.2016 11:38:00
 *  Author: Ulrich
 *  From: https://www.ulrichradig.de/home/index.php/avr/oled-display-ssd1306
 */

#ifndef __oled_H
#define __oled_H

#define ROTATE

#include <inttypes.h>
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <stdlib.h>
#include <stdarg.h>
#include <ctype.h>
#include <string.h>
#include <util/delay.h>

#define SDA_PIN			PC4
#define SCL_PIN			PC5
#define I2C_PORT		PORTC

#define OLED_I2C_ADDR	0x78
#define SCL_CLOCK		400000UL

class oled_ssd1306 {
private:

	void i2c_init(void);
	uint8_t i2c_start(void);
	uint8_t i2c_byte(uint8_t byte);
	void i2c_stop(void);

public:

	oled_ssd1306();
	~oled_ssd1306();

	void oled_write_char(char c);
	void oled_write_str(char* str);
	void oled_write_P(const char *Buffer, ...);
	void oled_init(void);
	void oled_clear_screen(void);
	void oled_font_size(uint8_t byte);
	void oled_gotoxy(uint8_t x, uint8_t y);

};

#define oled_write(format, args...)   oled_write_P(PSTR(format) , ## args)

#define COMMAND						0x00
#define DATA						0x40

#define SET_CONTRAST_CONTROL		0x81
#define SET_DISPLAY_ON				0xAF
#define SET_DISPLAY_OFF				0xAE
#define SET_DISPLAY_NORMAL			0xA6
#define SET_DISPLAY_INVERSE		0xA7
#define ENTIRE_DISPLAY_ON			0xA4

#define SET_MEMORY_ADDR_MODE		0x20
#define HORIZONTAL_ADDRESSING_MODE	0x00
#define VERTICAL_ADDRESSING_MODE	0x01
#define PAGE_ADDRESSING_MODE		0x02

#define SET_PAGE_START				0xB0	//~0xB7
#define SET_COLUMN_ADDRESS			0x21
#define SET_PAGE_ADDRESS			0x22

#ifdef ROTATE
#define SET_COM_OUTPUT_NORMAL		0xC8
#define SET_COM_OUTPUT_REMAPPED		0xC0
#endif

#ifndef ROTATE
#define SET_COM_OUTPUT_NORMAL		0xC0
#define SET_COM_OUTPUT_REMAPPED		0xC8
#endif

#define SET_DISPLAY_OFFSET			0xD3
#define SET_DISPLAY_CLOCK			0xD5
#define SET_PRECHARGE_PERIOD		0xD9
#define SET_COM_PINS				0xDA

#define SET_VCOMH_DESELECT			0xDB	//0x00,0x20,0x30

#define	SET_LOWER_COLUMN			0x00
#define	SET_HIGHER_COLUMN			0x10
#define	SET_DISPLAY_START_LINE		0x40

#ifdef ROTATE
#define SET_SEGMENT_REMAP_O1		0xA1
#define SET_SEGMENT_REMAP_O2		0xA0
#endif

#ifndef ROTATE
#define SET_SEGMENT_REMAP_O1		0xA0
#define SET_SEGMENT_REMAP_O2		0xA1
#endif

#define SET_MULTIPLEX_RATIO			0xA8
#define COMMAND_NO_OPERATION		0xE3

#define CHARGE_BUMB_SETTING			0x8D

#endif // __oled_H