51单片机教程实例131-双色点阵交替图形显示

/*----------------------------------------------- 名称：双色点阵 论坛：www.doflye.net 编写：shifang 修改：无 内容：使用hc595驱动双色点阵 ------------------------------------------------*/ #include<reg52.h> //包含头文件，一般情况不需要改动，头文件包含特殊功能寄存器的定义 #include <intrins.h> //unsigned char segout[8]={0,1,2,3,4,5,6,7}; //8列 unsigned char segout[8]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; //8列 unsigned char code tab[]={//沙漏流动图形表格 // 0x81,0xC3,0xA5,0xD9,0xF9,0xE7,0xC3,0x81, 0xFF,0x7E,0x3C,0x18,0x18,0x24,0x42,0xFF, 0xFF,0x76,0x3C,0x18,0x18,0x24,0x4A,0xFF, 0xFF,0x66,0x3C,0x18,0x18,0x24,0x5A,0xFF, 0xFF,0x46,0x3C,0x18,0x18,0x24,0x7A,0xFF, 0xFF,0x42,0x3C,0x18,0x18,0x24,0x7E,0xFF, 0xFF,0x42,0x34,0x18,0x18,0x2C,0x7E,0xFF, 0xFF,0x42,0x24,0x18,0x18,0x3C,0x7E,0xFF, 0x81,0xC3,0xA5,0x9B,0x9F,0xE7,0xC3,0x81 }; /*------------------------------------------------ 硬件端口定义 ------------------------------------------------*/ sbit LATCH = P1^0; sbit SRCLK= P1^1; sbit SER = P1^2; sbit LATCH_B = P2^2; sbit SRCLK_B= P2^1; sbit SER_B= P2^0; /*------------------------------------------------ uS延时函数，含有输入参数 unsigned char t，无返回值 unsigned char 是定义无符号字符变量，其值的范围是 0~255 这里使用晶振12M，精确延时请使用汇编,大致延时 长度如下 T=tx2+5 uS ------------------------------------------------*/ void DelayUs2x(unsigned char t) { while(--t); } /*------------------------------------------------ mS延时函数，含有输入参数 unsigned char t，无返回值 unsigned char 是定义无符号字符变量，其值的范围是 0~255 这里使用晶振12M，精确延时请使用汇编 ------------------------------------------------*/ void DelayMs(unsigned char t) { while(t--) { //大致延时1mS DelayUs2x(245); DelayUs2x(245); } } /*------------------------------------------------ 发送字节程序 ------------------------------------------------*/ void SendByte(unsigned char dat) { unsigned char i; for(i=0;i<8;i++) { SRCLK=0; SER=dat&0x80; dat<<=1; SRCLK=1; } } /*------------------------------------------------ 发送双字节程序 595级联，n个595，就需要发送n字节后锁存 ------------------------------------------------*/ void Send2Byte(unsigned char dat1,unsigned char dat2) { SendByte(dat1); SendByte(dat2); } /*------------------------------------------------ 595锁存程序 595级联发送数据后，锁存有效 ------------------------------------------------*/ void Out595(void) { LATCH=0; _nop_(); LATCH=1; } /*------------------------------------------------ 发送位码字节程序 使用另外一片单独595 ------------------------------------------------*/ void SendSeg(unsigned char dat) { unsigned char i; for(i=0;i<8;i++) //发送字节 { SRCLK_B=0; SER_B=dat&0x80; dat<<=1; SRCLK_B=1; } LATCH_B=0; //锁存 _nop_(); LATCH_B=1; } /*------------------------------------------------ 主程序 ------------------------------------------------*/ void main() { unsigned char i,j,k; while(1) { for(j=0;j<8;j++) for(k=0;k<40;k++)//这个主要用于延时显示动画效果 for(i=0;i<8;i++) //8列显示 { SendSeg(segout[i]); Send2Byte(~tab[i+j*8],0xff); Out595(); DelayMs(1); Send2Byte(0xff,0xff); //防止重影 Out595(); } //另外一种颜色 for(j=0;j<8;j++) for(k=0;k<40;k++)//这个主要用于延时显示动画效果 for(i=0;i<8;i++) //8列显示 { SendSeg(segout[i]); Send2Byte(0xff,~tab[i+j*8]); Out595(); DelayMs(1); Send2Byte(0xff,0xff); //防止重影 Out595(); } } }