漢字LED點陣顯示.doc

efan23:04:26有對漢字LED點陣顯示熟悉的朋友嗎？要下雨了23:04:51什么問題typhoon23:04:54恩efan23:05:11有段程序看不太懂efan23:05:26#include#defineint8unsignedchar#defineint16unsignedint#defineint32unsignedlongint8flag；int8n；int8codetable32=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,/*歡,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/*/；voiddelay(void)；int16offset；voidmain(void)int8i；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+)/顯示左半邊屏幕P0=*(p+offset+2*i)；P2=i|0x08；/P2.4=0,P2.3=1選中U2,輸出掃描碼給U6delay()；P0=*(p+offset+2*i+1)；P2=i|0x10；/P2.4=1,P2.3=0選中U3,輸出掃描碼給U7delay()；for(i=8；i16；i+)/顯示右半邊屏幕P0=*(p+offset+2*i)；P2=(i-8)|0x20；/P2.5=1P2.4=0,P2.3=0選中U4,輸出掃描碼U8delay()；P0=*(p+offset+2*i+1)；P2=(i-8)|0x40；/P2.6=1P2.5=0,P2.4=0選中U5,輸出掃描碼U9delay()；voiddelay(void)int16i；for(i=0；i50；i+)；voidtimer0()interrupt1using3TF0=0；TH0=0xb1；TL0=0xe0；if(n1100)offset=0；n=0；efan23:05:57程序有兩個地方不太明白1.P0=*(p+offset+2*i)；為什么要乘以2，原理是什么？2.voidtimer0()interrupt1using3這個中斷是為了產(chǎn)生offset的原理是什么，為什么能實現(xiàn)漢字的移動顯示(從右至左)efan23:07:31這段程序?qū)崿F(xiàn)漢字從左到右滾動顯示狂人23:07:38116*16的點陣2每掃一次偏移地址加2efan(6939780)23:08:35能具體一點嗎？efan(6939780)23:09:221。里面還加了個offset,為什么能實現(xiàn)跑馬顯示狂人(63637313)23:09:23每行16個led，當(dāng)然要用2個字節(jié)，這個明白吧efan(6939780)23:09:38這個懂了狂人(63637313)23:10:33中斷一次，數(shù)據(jù)整體下移一行，有問題嗎？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我沒仔細(xì)看太長了你明白了原理再看程序就簡單了efan(6939780)23:13:39他是左跑馬，為何下移動阿？狂人(63637313)23:14:09我隨便說的efan(6939780)23:14:18狂人(63637313)23:14:58要下雨了(422583941)23:15:00向左跑就是說逐步去掉左邊的一些代碼不要要下雨了(422583941)23:15:44第一列的數(shù)據(jù)逐步往右邊取efan(6939780)23:17:17對照漢字碼看一下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,/*歡,0*/起始為0x04,0x28中斷一次，跳到哪個了？是不是0x08,0x24？要下雨了(422583941)23:17:38是的要下雨了(422583941)23:17:51第一列就顯示了0x08,0x24要下雨了(422583941)23:18:18你這個程序運(yùn)行對了沒有efan(6939780)23:19:03跑了，proteus沒問題要下雨了(422583