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94 lines
2.5 KiB
94 lines
2.5 KiB
/* epd.h - E-Paper Display library API */ |
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#ifndef EPD_H_ |
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#define EPD_H_ |
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/* Includes */ |
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#include "stddef.h" |
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#include "stdint.h" |
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#include "stdbool.h" |
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#include "epd_font.h" |
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#include "epd_fonts.h" |
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/* Data Structures */ |
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typedef struct epd_s epd_t; |
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typedef enum epd_dir_e { |
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EPD_DIR_L2R, |
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EPD_DIR_T2B, |
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EPD_DIR_R2L, |
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EPD_DIR_B2T |
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} epd_dir_t; |
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typedef uint8_t epd_dbuf_t; |
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typedef int (*epd_spi_write)(const uint8_t *, size_t, void *); |
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typedef void (*epd_spi_cs)(bool, void *); |
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typedef void (*epd_gpo_dc)(bool, void *); |
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typedef void (*epd_gpo_rst)(bool, void *); |
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typedef bool (*epd_gpi_busy)(void *); |
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typedef void (*epd_sleep_ms)(uint32_t, void *); |
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typedef struct epd_platform_config_s { |
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epd_spi_write spi_write; |
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epd_spi_cs spi_cs; |
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epd_gpo_dc dc; |
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epd_gpo_rst rst; |
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epd_gpi_busy busy; |
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epd_sleep_ms sleep_ms; |
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void *udata; |
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} epd_platform_config_t; |
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typedef int32_t (*epd_write_dbuf)(epd_t *); |
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typedef int32_t (*epd_write_dbuf_partial)(epd_t *, uint16_t, uint16_t, uint16_t, uint16_t); |
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typedef struct epd_display_config_s { |
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uint32_t w; |
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uint32_t h; |
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epd_write_dbuf write; |
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epd_write_dbuf_partial write_partial; |
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} epd_display_config_t; |
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typedef uint16_t (*epd_char_cb)(epd_t *epd, uint8_t b); |
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typedef struct epd_font_decode_s |
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{ |
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const uint8_t *decode_ptr; /* pointer to the compressed data */ |
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uint16_t target_x; |
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uint16_t target_y; |
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int8_t x; /* local coordinates, (0,0) is upper left */ |
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int8_t y; |
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int8_t glyph_width; |
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int8_t glyph_height; |
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uint8_t decode_bit_pos; /* bitpos inside a byte of the compressed data */ |
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uint8_t is_transparent; |
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uint8_t fg_color; |
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uint8_t bg_color; |
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#ifdef EPD_WITH_FONT_ROTATION |
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uint8_t dir; /* direction */ |
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#endif |
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} epd_font_decode_t; |
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typedef struct epd_font_data_s { |
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epd_fontcfg_t cfg; |
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uint8_t utf8_state; |
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uint16_t encoding; |
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uint8_t height_mode; |
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int8_t ref_ascent; |
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int8_t ref_descent; |
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epd_font_decode_t decode; |
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epd_char_cb char_cb; |
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} epd_font_data_t; |
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struct epd_s { |
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epd_platform_config_t platform; |
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epd_display_config_t display; |
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epd_dbuf_t *dbuf; |
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epd_font_t *font; |
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epd_font_data_t fontdata; |
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uint8_t draw_color; |
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}; |
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/* Function Prototypes */ |
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void epd_init(epd_t *epd, epd_platform_config_t *cfg); |
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void epd_display_init(epd_t *epd, epd_display_config_t *cfg); |
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int8_t epd_dbuf_set(epd_t *epd, epd_dbuf_t *dbuf); |
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int8_t epd_dbuf_clear(epd_t *epd); |
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void epd_draw_line(epd_t *epd, uint16_t x, uint16_t y, uint16_t len, epd_dir_t dir); |
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int32_t epd_update(epd_t *epd); |
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int32_t epd_update_partial(epd_t *epd, uint16_t x0, uint16_t x1, uint16_t y0, uint16_t y1); |
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#endif /* EPD_H_ */
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