ledrv.h

是一个键盘测试程序

#ifndef __LED_DRV_H__
#define __LED_DRV_H__

#include <ft2build.h>
#include FT_FREETYPE_H 
#ifdef __cplusplus
extern "C" {
#endif

typedef struct tagledrv_t {
	int fd;
	FT_Library library;
	FT_Face face; 
	short bStop_show;
	unsigned short char_sep;
	unsigned char buffer[32][16*7];
}ledrv_t;

/* basic function*/
ledrv_t* ledrv_init_default();
ledrv_t* ledrv_init(const char* devfile , int bps);

void ledrv_clear(ledrv_t* drv);

int ledrv_flush(ledrv_t* drv);

void ledrv_destory(ledrv_t* drv);

/* operation */
int draw_text(ledrv_t* drv, short x, short y, unsigned short* text, int* nextpos);
int draw_line(ledrv_t* drv, short sx, short sy, short ex, short ey);
int get_text_draw_length(ledrv_t* drv, unsigned short* text);
#ifdef __cplusplus
}
#endif

#endif