#define CH451_RESET     0x0201                  //復(fù)位
#define CH451_LEFTMOV   0x0300		            //設(shè)置移動(dòng)方式-作移
#define CH451_LEFTCYC   0x0301		            //設(shè)置移動(dòng)方式-左循
#define CH451_RIGHTMOV  0x0302		            //設(shè)置移動(dòng)方式-右移
#define CH451_RIGHTCYC  0x0303		            //設(shè)置移動(dòng)方式-右循	
#define CH451_SYSOFF    0x0400                  //關(guān)顯示、鍵盤、看門狗
#define CH451_SYSON1    0x0401                  //開顯示
#define CH451_SYSON2    0x0403                  //開顯示、鍵盤
#define CH451_SYSON3    0x0407                  //開顯示、鍵盤、看門狗功能
#define CH451_DSP       0x0500                  //設(shè)置默認(rèn)顯示方式
#define CH451_BCD       0x0580                  //設(shè)置BCD譯碼方式
#define CH451_TWINKLE   0x0600		            //設(shè)置閃爍控制,第一位控一位閃爍。1為閃
#define CH451_DIG0      0x0800                  //數(shù)碼管位0顯示
#define CH451_DIG1      0x0900		            //數(shù)碼管位1顯示 
#define CH451_DIG2      0x0a00		            //數(shù)碼管位2顯示
#define CH451_DIG3      0x0b00		            //數(shù)碼管位3顯示
#define CH451_DIG4      0x0c00		            //數(shù)碼管位4顯示
#define CH451_DIG5      0x0d00	                //數(shù)碼管位5顯示	
#define CH451_DIG6      0x0e00	                //數(shù)碼管位6顯示	
#define CH451_DIG7      0x0f00		            //數(shù)碼管位7顯示

#define ch451_dclk0     cbi(PORTD,6)
#define ch451_dclk1     sbi(PORTD,6)

#define ch451_din0      cbi(PORTD,5)
#define ch451_din1      sbi(PORTD,5)

#define ch451_dout      (PIND&0x08)>>3

#define ch451_load0     cbi(PORTD,4)
#define ch451_load1     sbi(PORTD,4)

void ch451_init(void);
void ch451_write(unsigned int command);
unsigned char ch451_read(void);