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            EEPW首頁 > 嵌入式系統(tǒng) > 設(shè)計(jì)應(yīng)用 > 單片機(jī)學(xué)習(xí)——LED顯示實(shí)驗(yàn)之二

            單片機(jī)學(xué)習(xí)——LED顯示實(shí)驗(yàn)之二

            作者: 時(shí)間:2016-11-23 來源:網(wǎng)絡(luò) 收藏
            題目:在八位LED顯示屏,顯示“HELLO”:1、使“HELLO”字樣閃爍 2、使字樣“HELLO”從左至右滾動(dòng)顯示。并且循環(huán)下去。

            解決方案:(C語言編程)

            本文引用地址:http://www.biyoush.com/article/201611/320188.htm

            #include
            #include
            #define uint unsigned int
            #define uchar unsigned char
            uchar hello_table[]={0x89,0x86,0xc7,0xc7,0xc0,0xff};
            uchar sled_bit_table[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
            uchar sled_disp_buff[]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x89,0x86,0xc7,0xc7,0xc0,
            0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
            #define sled_dm_port P0
            #define sled_wm_port P2
            sbit speaker_en_port = P3^7;
            sbit le=P3^6;
            sbit led_en_port=P2^5;
            void display(uchar aa,uchar bb,uchar cc,uchar dd,uchar ee,uchar ba,uchar sh,uchar g);
            void delay(uint a) {
            uint i,j;
            for(j=a;j>0;j--)
            for(i=220;i>0;i--);
            }
            void main()
            {
            uchar i,j,k,a,b,c,d;
            uint count=4;
            led_en_port=0;
            speaker_en_port = 0;
            while(1){
            c=5;
            while(c){
            for(a=0;a<50;a++)
            display(5,0,1,2,3,4,5,5);
            for(b=0;b<50;b++)
            display(5,5,5,5,5,5,5,5);
            c--;
            }
            le=1;
            k=16;
            while(k) {
            for(j=0;j<50;j++){
            for(i=0;i<8;i++){
            sled_wm_port = 0xff;
            sled_dm_port = sled_disp_buff[i+count];
            sled_wm_port = sled_bit_table[i];
            delay(1);
            }
            }
            count++;
            if(count>=8)
            count=4;
            k--;
            }
            d=5;
            while(d){
            for(a=0;a<50;a++)
            display(5,0,1,2,3,4,5,5);
            for(b=0;b<50;b++)
            display(5,5,5,5,5,5,5,5);
            d--;
            }
            }
            }
            void display(uchar aa,uchar bb,uchar cc,uchar dd,uchar ee,uchar ff,uchar hh,uchar ii)
            {
            le=1;
            P2=sled_bit_table[0];
            le=0;
            le=1;
            P0=hello_table[aa];
            le=0;
            delay(1);
            le=1;
            P2=sled_bit_table[1];
            le=0;
            le=1;
            P0=hello_table[bb];
            le=0;
            delay(1);
            le=1;
            P2=sled_bit_table[2];
            le=0;
            le=1;
            P0=hello_table[cc];
            le=0;
            delay(1);
            le=1;
            P2=sled_bit_table[3];
            le=0;
            le=1;
            P0=hello_table[dd];
            le=0;
            delay(1);
            le=1;
            P2=sled_bit_table[4];
            le=0;
            le=1;
            P0=hello_table[ee];
            le=0;
            delay(1);
            le=1;
            P2=sled_bit_table[5];
            le=0;
            le=1;
            P0=hello_table[ff];
            le=0;
            delay(1);
            le=1;
            P2=sled_bit_table[6];
            le=0;
            le=1;
            P0=hello_table[hh];
            le=0;
            delay(1);
            le=1;
            P2=sled_bit_table[7];
            le=0;
            le=1;
            P0=hello_table[ii];
            le=0;
            delay(1);
            }



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