#51單片機(jī)#8位數(shù)碼管(74HC595芯片)的使用方法

#include #include // 函數(shù)原形定義#define uchar unsigned char#define uint unsigned int void main (void);					// 主函數(shù)void LED_OUT (uchar X);				// LED單字節(jié)串行移位函數(shù)void LED_print (uchar p, uchar x) ;unsigned char code LED_0F[];		// LED字模表sbit DIO    = P1^0;				//串行數(shù)據(jù)輸入sbit RCLK   = P1^1;				//時鐘脈沖信號——上升沿有效sbit SCLK   = P1^2;				//打入信號————上升沿有效uchar Buffer[4] = {0};          //從串口接收的數(shù)據(jù)void Init(void){TMOD    = 0x20; //8 位自動重裝計(jì)數(shù)PCON   &= 0x7f;SCON    = 0x50;//串行口控制寄存器 SM1=1,SM0=0方式一波特率可變TH1     = 0xFD; //設(shè)置波特率 9600TL1     = 0xFD;TR1     = 1;    //啟動定時器1TI      = 0;RI      = 0;ES      = 1;    //開串口中斷EA      = 1;    //開總中斷}// 主程序void main (void) {Init();//初始化LED_print (0x80, 0x0F); //顯示啟動信息while(1){switch(Buffer[0]){case 0x30: LED_print (0x01, 0);    break;case 0x31: LED_print (0x01, 1);    break;case 0x32: LED_print (0x01, 2);    break;case 0x33: LED_print (0x01, 3);    break;case 0x34: LED_print (0x01, 4);    break;default  : LED_print (0x80, 0x0E); break; }}} void Com_Int(void) interrupt 4{EA = 0;if (RI == 1) //當(dāng)硬件接收到一個數(shù)據(jù)時，RI會置位{Buffer[0] = SBUF ; //這里減去48是因?yàn)閺碾娔X中發(fā)送過來的數(shù)據(jù)是ASCII碼。// 	Buffer[0] = SBUF-48 ;RI = 0; }EA = 1;}void LED_print (uchar p, uchar x) {unsigned char code *led_table;          // 查表指針uchar i;unsigned long loop;led_table = LED_0F + x;i = *led_table;LED_OUT(i);			LED_OUT(p);		RCLK = 0;RCLK = 1;for(loop = 0; loop < 230; loop++);}void LED_OUT(uchar X){uchar i;for(i=8;i>=1;i--){if (X&0x80) DIO=1; else DIO=0;X<<=1;SCLK = 0;SCLK = 1;}}unsigned char code LED_0F[] = {//0   1     2     3     4     5     6     7     8     9     A     b     C     d	    E     F     -0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E, 0xbf};