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esp-idf-ssd1306/components/ssd1306/ssd1306.h

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#ifndef MAIN_SSD1306_H_
#define MAIN_SSD1306_H_
#include "driver/spi_master.h"
#if (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 2, 0))
#include "driver/i2c_master.h"
#else
#include "driver/i2c.h"
#endif
// Following definitions are bollowed from
// http://robotcantalk.blogspot.com/2015/03/interfacing-arduino-with-ssd1306-driven.html
/* Control byte for i2c
Co : bit 8 : Continuation Bit
* 1 = no-continuation (only one byte to follow)
* 0 = the controller should expect a stream of bytes.
D/C# : bit 7 : Data/Command Select bit
* 1 = the next byte or byte stream will be Data.
* 0 = a Command byte or byte stream will be coming up next.
Bits 6-0 will be all zeros.
Usage:
0x80 : Single Command byte
0x00 : Command Stream
0xC0 : Single Data byte
0x40 : Data Stream
*/
#define OLED_CONTROL_BYTE_CMD_SINGLE 0x80
#define OLED_CONTROL_BYTE_CMD_STREAM 0x00
#define OLED_CONTROL_BYTE_DATA_SINGLE 0xC0
#define OLED_CONTROL_BYTE_DATA_STREAM 0x40
// Fundamental commands (pg.28)
#define OLED_CMD_SET_CONTRAST 0x81 // follow with 0x7F
#define OLED_CMD_DISPLAY_RAM 0xA4
#define OLED_CMD_DISPLAY_ALLON 0xA5
#define OLED_CMD_DISPLAY_NORMAL 0xA6
#define OLED_CMD_DISPLAY_INVERTED 0xA7
#define OLED_CMD_DISPLAY_OFF 0xAE
#define OLED_CMD_DISPLAY_ON 0xAF
// Addressing Command Table (pg.30)
#define OLED_CMD_SET_MEMORY_ADDR_MODE 0x20
#define OLED_CMD_SET_HORI_ADDR_MODE 0x00 // Horizontal Addressing Mode
#define OLED_CMD_SET_VERT_ADDR_MODE 0x01 // Vertical Addressing Mode
#define OLED_CMD_SET_PAGE_ADDR_MODE 0x02 // Page Addressing Mode
#define OLED_CMD_SET_COLUMN_RANGE 0x21 // can be used only in HORZ/VERT mode - follow with 0x00 and 0x7F = COL127
#define OLED_CMD_SET_PAGE_RANGE 0x22 // can be used only in HORZ/VERT mode - follow with 0x00 and 0x07 = PAGE7
// Hardware Config (pg.31)
#define OLED_CMD_SET_DISPLAY_START_LINE 0x40
#define OLED_CMD_SET_SEGMENT_REMAP_0 0xA0
#define OLED_CMD_SET_SEGMENT_REMAP_1 0xA1
#define OLED_CMD_SET_MUX_RATIO 0xA8 // follow with 0x3F = 64 MUX
#define OLED_CMD_SET_COM_SCAN_MODE 0xC8
#define OLED_CMD_SET_DISPLAY_OFFSET 0xD3 // follow with 0x00
#define OLED_CMD_SET_COM_PIN_MAP 0xDA // follow with 0x12
#define OLED_CMD_NOP 0xE3 // NOP
// Timing and Driving Scheme (pg.32)
#define OLED_CMD_SET_DISPLAY_CLK_DIV 0xD5 // follow with 0x80
#define OLED_CMD_SET_PRECHARGE 0xD9 // follow with 0xF1
#define OLED_CMD_SET_VCOMH_DESELCT 0xDB // follow with 0x30
// Charge Pump (pg.62)
#define OLED_CMD_SET_CHARGE_PUMP 0x8D // follow with 0x14
// Scrolling Command
#define OLED_CMD_HORIZONTAL_RIGHT 0x26
#define OLED_CMD_HORIZONTAL_LEFT 0x27
#define OLED_CMD_CONTINUOUS_SCROLL 0x29
#define OLED_CMD_DEACTIVE_SCROLL 0x2E
#define OLED_CMD_ACTIVE_SCROLL 0x2F
#define OLED_CMD_VERTICAL 0xA3
#define I2C_ADDRESS 0x3C
#define SPI_ADDRESS 0xFF
typedef enum {
SCROLL_RIGHT = 1,
SCROLL_LEFT = 2,
SCROLL_DOWN = 3,
SCROLL_UP = 4,
PAGE_SCROLL_DOWN = 5,
PAGE_SCROLL_UP = 6,
SCROLL_STOP = 7
} ssd1306_scroll_type_t;
typedef struct {
bool _valid; // Not using it anymore
int _segLen; // Not using it anymore
uint8_t _segs[128];
} PAGE_t;
typedef struct {
int _address;
int _width;
int _height;
int _pages;
int _dc;
bool _scEnable;
int _scStart;
int _scEnd;
int _scDirection;
PAGE_t _page[8];
bool _flip;
i2c_port_t _i2c_num;
spi_device_handle_t _spi_device_handle;
#if (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 2, 0))
i2c_master_dev_handle_t _i2c_dev_handle;
#endif
} SSD1306_t;
#ifdef __cplusplus
extern "C"
{
#endif
void ssd1306_init(SSD1306_t * dev, int width, int height);
int ssd1306_get_width(SSD1306_t * dev);
int ssd1306_get_height(SSD1306_t * dev);
int ssd1306_get_pages(SSD1306_t * dev);
void ssd1306_show_buffer(SSD1306_t * dev);
void ssd1306_set_buffer(SSD1306_t * dev, uint8_t * buffer);
void ssd1306_get_buffer(SSD1306_t * dev, uint8_t * buffer);
void ssd1306_display_image(SSD1306_t * dev, int page, int seg, uint8_t * images, int width);
void ssd1306_display_text(SSD1306_t * dev, int page, char * text, int text_len, bool invert);
void ssd1306_display_text_x3(SSD1306_t * dev, int page, char * text, int text_len, bool invert);
void ssd1306_clear_screen(SSD1306_t * dev, bool invert);
void ssd1306_clear_line(SSD1306_t * dev, int page, bool invert);
void ssd1306_contrast(SSD1306_t * dev, int contrast);
void ssd1306_software_scroll(SSD1306_t * dev, int start, int end);
void ssd1306_scroll_text(SSD1306_t * dev, char * text, int text_len, bool invert);
void ssd1306_scroll_clear(SSD1306_t * dev);
void ssd1306_hardware_scroll(SSD1306_t * dev, ssd1306_scroll_type_t scroll);
void ssd1306_wrap_arround(SSD1306_t * dev, ssd1306_scroll_type_t scroll, int start, int end, int8_t delay);
void _ssd1306_bitmaps(SSD1306_t * dev, int xpos, int ypos, uint8_t * bitmap, int width, int height, bool invert);
void ssd1306_bitmaps(SSD1306_t * dev, int xpos, int ypos, uint8_t * bitmap, int width, int height, bool invert);
void _ssd1306_pixel(SSD1306_t * dev, int xpos, int ypos, bool invert);
void _ssd1306_line(SSD1306_t * dev, int x1, int y1, int x2, int y2, bool invert);
void _ssd1306_circle(SSD1306_t * dev, int x0, int y0, int r, bool invert);
void _ssd1306_cursor(SSD1306_t * dev, int x0, int y0, int r, bool invert);
void ssd1306_invert(uint8_t *buf, size_t blen);
void ssd1306_flip(uint8_t *buf, size_t blen);
uint8_t ssd1306_copy_bit(uint8_t src, int srcBits, uint8_t dst, int dstBits);
uint8_t ssd1306_rotate_byte(uint8_t ch1);
void ssd1306_fadeout(SSD1306_t * dev);
void ssd1306_rotate_image(uint8_t *image, bool flip);
void ssd1306_display_rotate_text(SSD1306_t * dev, int seg, char * text, int text_len, bool invert);
void ssd1306_dump(SSD1306_t dev);
void ssd1306_dump_page(SSD1306_t * dev, int page, int seg);
void i2c_master_init(SSD1306_t * dev, int16_t sda, int16_t scl, int16_t reset);
void i2c_device_add(SSD1306_t * dev, i2c_port_t i2c_num, int16_t reset);
void i2c_bus_add(SSD1306_t * dev, i2c_master_bus_handle_t bus_handle, i2c_port_t i2c_num, int16_t reset);
void i2c_init(SSD1306_t * dev, int width, int height);
void i2c_display_image(SSD1306_t * dev, int page, int seg, uint8_t * images, int width);
void i2c_contrast(SSD1306_t * dev, int contrast);
void i2c_hardware_scroll(SSD1306_t * dev, ssd1306_scroll_type_t scroll);
void spi_clock_speed(int speed);
void spi_master_init(SSD1306_t * dev, int16_t mosi, int16_t sclk, int16_t cs, int16_t dc, int16_t reset);
void spi_device_add(SSD1306_t * dev, int16_t cs, int16_t dc, int16_t reset);
bool spi_master_write_byte(spi_device_handle_t SPIHandle, const uint8_t* Data, size_t DataLength );
bool spi_master_write_command(SSD1306_t * dev, uint8_t Command );
bool spi_master_write_data(SSD1306_t * dev, const uint8_t* Data, size_t DataLength );
void spi_init(SSD1306_t * dev, int width, int height);
void spi_display_image(SSD1306_t * dev, int page, int seg, uint8_t * images, int width);
void spi_contrast(SSD1306_t * dev, int contrast);
void spi_hardware_scroll(SSD1306_t * dev, ssd1306_scroll_type_t scroll);
#ifdef __cplusplus
}
#endif
#endif /* MAIN_SSD1306_H_ */
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