proteus7221仿真加程序.doc

#include max7221.hvoid delay(uint z)uint x,y;for(x=0;xz;x+)for(y=0;y110;y+);void main()uchar i;InitialMax7221();for(i=1;i9;i+)download(i,1,i+7); delay(500); while(1);/* THE MAX7221 LED DRIVER LIB COPYRIGHT (c) 2005 BY JJJ. - ALL RIGHTS RESERVED - File Name: Max7221.h Author: Jiang Jian Jun Created: 2005/9/19 Modified:NO Revision: 1.0 */#ifndef _MAX7221_LED_DRIVER_2005_9_19_#define _MAX7221_LED_DRIVER_2005_9_19_#include #include #define uchar unsigned char#define uint unsigned intsbit Max7221CS = P31;sbit Max7221DIN = P30;sbit Max7221CLK = P32;uchar digit=0x7e,0x30,0x6d,0x79,0x33,0x5b,0x5f,0x70,0x7f,0x7b,0x77,0x1f,0x4e,0x3d,0x4f,0x47,0x01,0x00;/0123456789ABCDEF-空 不编码 带小数点的+0x80即可 void WriteMax7221(uchar Address,uchar Data)uchar i;Max7221CS = 0;for (i=0;ii) ? 1:0;_nop_();_nop_();Max7221CLK = 1;_nop_();_nop_();for (i=0;ii) ? 1:0;_nop_();_nop_();Max7221CLK = 1;_nop_();_nop_();Max7221CS = 1;void InitialMax7221(void)WriteMax7221(0x0A,0x07);/亮度地址0AH,0x000x0F,0x0F最亮WriteMax7221(0x0B,0x07);/扫描LED个数地址0BH,0x000x07,最多扫描8个数码管WriteMax7221(0x0C,0x01);/工作模式地址0x0C. 0x00:ShutDown;0x01:NormalWriteMax7221(0x09,0x00);/编码模式地址0x09. 0x000xFF:哪一位为1，哪一位就支持编码/*0x00为不译码dp a b c d e f g 0xff为全译码 最高位为小数点位 d6-d4 无用 d3-d0对应方式0 */ /显示8位数 一下显示 此处： 按方式0 0123456789-EHLP 方式1：“0123456789ABCDEF”方式2：直接对应dp a,b,c,d,e,f,g /*void Max7221Display(uchar *buffer)uchar i;for(i=0;i8;i+)WriteMax7221(i+1,*(buffer+i); */在指定位写一个数字oxff 全支持编码 /*void write_one(uchar x,uchar y) WriteMax7221(x,y); */下载数据到ledwei :12345678 dat:digitdatvoid download(uchar wei,bit dp,uchar da