16乘16LED点阵汉字显示程序.doc

efan 23:04:26有对汉字LED点阵显示熟悉的朋友吗？ 要下雨了 23:04:51什么问题 typhoon 23:04:54恩 efan 23:05:11有段程序看不太懂 efan 23:05:26#include #define int8 unsigned char#define int16 unsigned int#define int32 unsigned longint8 flag;int8 n;int8 code table32= 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/* */ 0x04,0x28,0x08,0x24,0x32,0x22,0xC2,0x21,0xC2,0x26,0x34,0x38,0x04,0x04,0x08,0x18,0x30,0xF0,0xC0,0x17,0x60,0x10,0x18,0x10,0x0C,0x14,0x06,0x18,0x04,0x10,0x00,0x00,/*欢,0*/ 0x02,0x02,0x04,0x82,0xF8,0x73,0x04,0x20,0x02,0x00,0xE2,0x3F,0x42,0x20,0x82,0x40,0x02,0x40,0xFA,0x3F,0x02,0x20,0x42,0x20,0x22,0x20,0xC2,0x3F,0x02,0x00,0x00,0x00,/*迎,1*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00/* */ ;void delay(void);int16 offset;void main(void) int8 i; int8 *p; flag=0x10; n=0; TMOD=0x01; TH0=0xb1; TL0=0xe0; ET0=1; EA=1; TR0=1; p=&table00; while (1) for (i=0;i8;i+) /显示左半边屏幕 P0=*(p+offset+2*i); P2=i|0x08; /P2.4=0,P2.3=1 选中U2, 输出扫描码给U6 delay(); P0=*(p+offset+2*i+1); P2=i|0x10; /P2.4=1,P2.3=0 选中U3, 输出扫描码给U7 delay(); for (i=8;i16;i+) /显示右半边屏幕 P0=*(p+offset+2*i); P2=(i-8)|0x20; /P2.5=1 P2.4=0, P2.3=0 选中U4,输出扫描码U8 delay(); P0=*(p+offset+2*i+1); P2=(i-8)|0x40; /P2.6=1 P2.5=0, P2.4=0 选中U5,输出扫描码U9 delay(); void delay(void) int16 i; for (i=0;i50;i+) ;void timer0() interrupt 1 using 3 TF0=0; TH0=0xb1; TL0=0xe0; if (n1100) offset=0; n=0; efan 23:05:57程序有两个地方不太明白1. P0=*(p+offset+2*i);为什么要乘以2，原理是什么？2.void timer0() interrupt 1 using 3这个中断是为了产生offset的原理是什么，为什么能实现汉字的移动显示(从右至左) efan 23:07:31这段程序实现汉字从左到右滚动显示 狂人 23:07:381 16*16的点阵2 每扫一次偏移地址加2efan(6939780) 23:08:35能具体一点吗？ efan(6939780) 23:09:221。里面还加了个 offset, 为什么能实现跑马显示 狂人(63637313) 23:09:23每行16个led，当然要用2个字节，这个明白吧 efan(6939780) 23:09:38这个懂了 狂人(63637313) 23:10:33中断一次，数据整体下移一行，有问题吗？ efan(6939780) 23:10:51我想想。efan(6939780) 23:12:23不理解，是不是指 offset+=2？ 要下雨了(422583941) 23:12:58是吧 狂人(63637313) 23:13:11我没仔细看 太长了 你明白了原理再看程序就简单了 efan(6939780) 23:13:39他是左跑马，为何下移动阿？ 狂人(63637313) 23:14:09我随便说的 efan(6939780) 23:14:18 狂人(63637313) 23:14:58 要下雨了(422583941) 23:15:00向左跑 就是说逐步去掉左边的一些代码不要 要下雨了(422583941) 23:15:44第一列的数据逐步往右边取efan(6939780) 23:17:17对照汉字码看一下0x04,0x28,0x08,0x24,0x32,0x22,0xC2,0x21,0xC2,0x26,0x34,0x38,0x04,0x04,0x08,0x18,0x30,0xF0,0xC0,0x17,0x60,0x10,0x18,0x10,0x0C,0x14,0x06,0x18,0x04,0x10,0x00,0x00,/*欢,0*/起始为 0x04,0x28中断一次，跳到哪个了？是不是0x08,0x24？ 要下雨了(422583941) 23:17:38是的要下雨了(422583941) 23:17:51第一列就显示了0x08,0x24要下雨了(422583941) 23:18:18你这个程序运行对了没有efan(6939780) 23:19:03跑了，proteus没问题 要下雨了(422583941) 23:19:12哦要下雨了(422583941) 23:19:12哦 要下雨了(42