将 Adafruit 库从 C++ 移植到 C

问题描述

我目前正在尝试将 AdafruitGFX 库从 C++ 移植到 C（用于 Rabbit micro 的 DynamicC）。 有人可以帮助我使用这个内联函数吗？ 我创建了一个 .c .h 对，并在标题中为它放置了一个原型，但它实际上仍然抛出了很多错误......谢谢！

//GFXFONT.H
    
/// Font data stored PER GLYPH
typedef struct {
  uint16_t bitmapOffset; ///< Pointer into GFXfont->bitmap
  uint8_t width;         ///< Bitmap dimensions in pixels
  uint8_t height;        ///< Bitmap dimensions in pixels
  uint8_t xAdvance;      ///< distance to advance cursor (x axis)
  int8_t xOffset;        ///< X dist from cursor pos to UL corner
  int8_t yOffset;        ///< Y dist from cursor pos to UL corner
} GFXglyph;

/// Data stored for FONT AS A WHOLE
typedef struct {
  uint8_t *bitmap;  ///< Glyph bitmaps,concatenated
  GFXglyph *glyph;  ///< Glyph array
  uint16_t first;   ///< ASCII extents (first char)
  uint16_t last;    ///< ASCII extents (last char)
  uint8_t yAdvance; ///< Newline distance (y axis)
} GFXfont;

//ADAFRUITGFX.H
inline GFXglyph *pgm_read_glyph_ptr(const GFXfont *gfxFont,uint8_t c);


// .C FILE
#include "AdafruitGFX.h"
#include "glcdfont.c"
#include "gfxfont.h"


#ifndef pgm_read_byte
#define pgm_read_byte(addr) (*(const unsigned char *)(addr))
#endif
#ifndef pgm_read_word
#define pgm_read_word(addr) (*(const unsigned short *)(addr))
#endif
#ifndef pgm_read_dword
#define pgm_read_dword(addr) (*(const unsigned long *)(addr))
#endif

#if !defined(__INT_MAX__) || (__INT_MAX__ > 0xFFFF)
#define pgm_read_pointer(addr) ((void *)pgm_read_dword(addr))
#else
#define pgm_read_pointer(addr) ((void *)pgm_read_word(addr))
#endif


inline GFXglyph *pgm_read_glyph_ptr(const GFXfont *gfxFont,uint8_t c) {
#ifdef __AVR__
  return &(((GFXglyph *)pgm_read_pointer(&gfxFont->glyph))[c]);
#else
  return gfxFont->glyph + c;
#endif //__AVR__
}

errors from the compiler

解决方法

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