display.h

在嵌入系统中使用RTOS是大势所趋。原因主要是现在在大多数情况下编程效率比执行效率重要（单片机便宜嘛）。本文件适用于51单片机

#define DISP_FGND_BLACK           0x00
#define DISP_FGND_BLUE            0x01
#define DISP_FGND_GREEN           0x02
#define DISP_FGND_CYAN            0x03
#define DISP_FGND_RED             0x04
#define DISP_FGND_PURPLE          0x05
#define DISP_FGND_BROWN           0x06
#define DISP_FGND_LIGHT_GRAY      0x07
#define DISP_FGND_DARK_GRAY       0x08
#define DISP_FGND_LIGHT_BLUE      0x09
#define DISP_FGND_LIGHT_GREEN     0x0A
#define DISP_FGND_LIGHT_CYAN      0x0B
#define DISP_FGND_LIGHT_RED       0x0C
#define DISP_FGND_LIGHT_PURPLE    0x0D
#define DISP_FGND_YELLOW          0x0E
#define DISP_FGND_WHITE           0x0F

#define DISP_BGND_BLACK           0x00
#define DISP_BGND_BLUE            0x10
#define DISP_BGND_GREEN           0x20
#define DISP_BGND_CYAN            0x30
#define DISP_BGND_RED             0x40
#define DISP_BGND_PURPLE          0x50
#define DISP_BGND_BROWN           0x60
#define DISP_BGND_LIGHT_GRAY      0x70

#define DISP_BLINK                0x80

extern void PC_DispClrScr(uint8 bgnd_color);
extern void PC_DispChar(uint8  x,uint8 y,uint8 c,uint8 color);
extern void PC_DispStr(uint8 x,uint8 y,uint8 *s,uint8 color);

extern uint8 random(uint8 seed);