ssd1306.h

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/*
MIT License
 
Copyright (c) 2021 David Schramm
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

 
#ifndef _inc_ssd1306
#define _inc_ssd1306
#include <pico/stdlib.h>
#include <hardware/i2c.h>

typedef enum {
    SET_CONTRAST = 0x81,
    SET_ENTIRE_ON = 0xA4,
    SET_NORM_INV = 0xA6,
    SET_DISP = 0xAE,
    SET_MEM_ADDR = 0x20,
    SET_COL_ADDR = 0x21,
    SET_PAGE_ADDR = 0x22,
    SET_DISP_START_LINE = 0x40,
    SET_SEG_REMAP = 0xA0,
    SET_MUX_RATIO = 0xA8,
    SET_COM_OUT_DIR = 0xC0,
    SET_DISP_OFFSET = 0xD3,
    SET_COM_PIN_CFG = 0xDA,
    SET_DISP_CLK_DIV = 0xD5,
    SET_PRECHARGE = 0xD9,
    SET_VCOM_DESEL = 0xDB,
    SET_CHARGE_PUMP = 0x8D
} ssd1306_command_t;

typedef struct {
    uint8_t width;      
    uint8_t height;     
    uint8_t pages;      
    uint8_t address;    
    i2c_inst_t *i2c_i;  
    bool external_vcc;   
    uint8_t *buffer;    
    size_t bufsize;     
} ssd1306_t;

bool ssd1306_init(ssd1306_t *p, uint16_t width, uint16_t height, uint8_t address, i2c_inst_t *i2c_instance);

void ssd1306_deinit(ssd1306_t *p);

void ssd1306_poweroff(ssd1306_t *p);

void ssd1306_poweron(ssd1306_t *p);

void ssd1306_contrast(ssd1306_t *p, uint8_t val);

void ssd1306_invert(ssd1306_t *p, uint8_t inv);

void ssd1306_show(ssd1306_t *p);

void ssd1306_clear(ssd1306_t *p);

void ssd1306_clear_pixel(ssd1306_t *p, uint32_t x, uint32_t y);

void ssd1306_draw_pixel(ssd1306_t *p, uint32_t x, uint32_t y);

void ssd1306_draw_line(ssd1306_t *p, int32_t x1, int32_t y1, int32_t x2, int32_t y2);

void ssd1306_clear_square(ssd1306_t *p, uint32_t x, uint32_t y, uint32_t width, uint32_t height);

void ssd1306_draw_square(ssd1306_t *p, uint32_t x, uint32_t y, uint32_t width, uint32_t height);

void ssd1306_draw_empty_square(ssd1306_t *p, uint32_t x, uint32_t y, uint32_t width, uint32_t height);

void ssd1306_bmp_show_image_with_offset(ssd1306_t *p, const uint8_t *data, const long size, uint32_t x_offset, uint32_t y_offset);

void ssd1306_bmp_show_image(ssd1306_t *p, const uint8_t *data, const long size);

void ssd1306_draw_char_with_font(ssd1306_t *p, uint32_t x, uint32_t y, uint32_t scale, const uint8_t *font, char c);

void ssd1306_draw_char(ssd1306_t *p, uint32_t x, uint32_t y, uint32_t scale, char c);

void ssd1306_draw_string_with_font(ssd1306_t *p, uint32_t x, uint32_t y, uint32_t scale, const uint8_t *font, const char *s );

void ssd1306_draw_string(ssd1306_t *p, uint32_t x, uint32_t y, uint32_t scale, const char *s);
 
#endif