16×16 点阵显示试验报告

16*1616*16116*16一、试验目的学习点阵显示字符的根本原理。把握用数控分频把握速度，实现点阵扫描的根本方式。QuartusIIVerilogHDL语言实现点真的行列循环显示。二、试验设备与器件QuartusII软件、EP2C8Q208C8试验箱三、试验方案设计试验可实现的功能语言，实现点阵的行列交替扫描。先是行扫描，扫之后，行连续扫描，依次循环。点阵根本学问X、YLED发亮。Y0=1，X0=0即可。应用时限流电阻可以放16LED显示灯。LED点阵每个点都有一个红色的发光二极管。点阵内的二极管间的连接都电寻常，所接点发光；反之处于截止状态，不放光。系统工作原理本系统用了两个模块，其中dianzhen.v是顶层文件，而hangsaomiao.v和liesaomiao.v3.3.1所示。开头开头50MHz时钟信号1Hz分频16s计时器N满16s？YYN行扫描列扫描点阵完毕3.3.1系统功能图示50MHz1s，由于要实现16*16的点阵扫描，所以用一个16s的计时器计时，每经过16s行扫描与列扫描的状态转换一次，通过点阵显示出来。模块化程序设计点阵显示顶层程序设计moduledianzhen(clk50mhz,row,sel0,sel1,sel2,sel3,line);input clk50mhz; //50MHz时钟信号outputsel0,sel1,sel2,sel3; //设置引脚选通点阵outputreg[15:0]row; //行outputreg[3:0]line; //列wire[15:0]row1,row2;wire[3:0]line1,line2;reg[24:0]cnt=0; //1Hz计数子reg[4:0]cnt1=0; //16s计数子assignsel0=1”b0;assignsel1=1”b1;assignsel2=1”b0;assignsel3=1”b0;always@(posedgeclk50mhz)beginif(cnt>=25”d50000000)begincnt<=25”b0; //1Hz计时器cnt1<=cnt1+1; //16s计时器end

else

endcnt<=cnt+1;hangsaomiaou1(.clk50mhz(clk50mhz),.row(row1),.line(line1));liesaomiaou2(.clk50mhz(clk50mhz),.row(row2),.line(line2));always@(*)if(cnt1<=5”d15)beginrow<=row1; //行扫描line<=line1;else

endbeginrow<=row2; //列扫描line<=line2;endendmodulehangsaomiao.vmodulehangsaomiao(clk50mhz,line,row);inputclk50mhz; //50MHz时钟信号outputreg[15:0]row; //列outputreg[3:0]line; //行reg[24:0]cnt1,cnt2; //计数子regclkrow,clkline; //行脉冲、列脉冲always@(posedgeclk50mhz)beginif(cnt1>=25”d50000000)begincnt1<=25”b0;clkrow=~clkrow; //1s列脉冲end

else

endcnt1<=cnt1+1;always@(posedgeclk50mhz)beginif(cnt2>=25”d500)end

else

begincnt2<=25”b0;clkline=~clkline; //50KHz行脉冲endcnt2<=cnt2+1;always@(posedgeclkline)begincase(line)4”d0:line<=4”d1; //高速行扫描4”d1:line<=4”d2;4”d2:line<=4”d3;4”d3:line<=4”d4;4”d4:line<=4”d5;4”d5:line<=4”d6;4”d6:line<=4”d7;4”d7:line<=4”d8;4”d8:line<=4”d9;4”d9:line<=4”d10;4”d10:line<=4”d11;4”d11:line<=4”d12;4”d12:line<=4”d13;4”d13:line<=4”d14;4”d14:line<=4”d15;4”d15:line<=4”d0;default:line<=4”d0;endcaseendalways@(posedgeclkrow) //1s的列扫描begincase(row)16”b0000000000000001:row<=16”b0000000000000010;16”b0000000000000010:row<=16”b0000000000000100;16”b0000000000000100:row<=16”b0000000000001000;16”b0000000000001000:row<=16”b0000000000010000;16”b0000000000010000:row<=16”b0000000000100000;16”b0000000000100000:row<=16”b0000000001000000;16”b0000000001000000:row<=16”b0000000010000000;16”b0000000010000000:row<=16”b0000000100000000;16”b0000000100000000:row<=16”b0000001000000000;16”b0000001000000000:row<=16”b0000010000000000;16”b0000010000000000:row<=16”b0000100000000000;16”b0000100000000000:row<=16”b0001000000000000;16”b0001000000000000:row<=16”b0010000000000000;16”b0010000000000000:row<=16”b0100000000000000;16”b0100000000000000:row<=16”b1000000000000000;16”b1000000000000000:row<=16”b0000000000000001;default :row<=16”b0000000000000001;endcaseendendmoduleliesaomiao.vmoduleliesaomiao(clk50mhz,row,line);inputclk50mhz; //50MHz时钟信号outputreg[15:0]row; //行outputreg[3:0]line; //列reg[24:0]cnt; //计数子regclk;always@(posedgeclk50mhz)beginif(cnt>=25”d50000000)begincnt<=25”b0;clk=~clk; end

else

endcnt<=cnt+1;always@(posedgeclk) //列扫描begincase(line)4”h0:beginrow=16”b1111111111111111;line<=4”h1;end4”h1:beginrow=16”b1111111111111111;line<=4”h2;end4”h2:beginrow=16”b1111111111111111;line<=4”h3;end4”h3:beginrow=16”b1111111111111111;line<=4”h4;end4”h4:beginrow=16”b1111111111111111;line<=4”h5;end4”h5:beginrow=16”b1111111111111111;line<=4”h6;end4”h6:beginrow=16”b1111111111111111;line<=4”h7;end4”h7:beginrow=16”b1111111111111111;line<=4”h8;end4”h8:beginrow=16”b1111111111111111;line<=4”h9;end4”h9:beginrow=16”b1111111111111111;line<=4”ha;end4”ha:beginrow=16”b1111111111111111;line<=4”hb;end4”hb:beginrow=16”b1111111111111111;line<=4”hc;end4”hc:beginrow=16”b1111111111111111;line<=4”hd;end16*164”hd:beginrow=16”b1111111111111111;line<=4”he;end4”he:beginrow=16”b1111111111111111;line<=4”hf;end4”hf:beginrow=16”b1111111111111111;line<=4”h0;enddefault:line<=4”h0;endcaseendendmodule下载电路及引脚安排设计sel0、sel1、sel2、sel3四个使能端选通点阵，EP2C8Q208C8就会工作在给点阵下命令的状态，并linerow3.5.1所示。3.5.2所示。3.5.2引脚安排616*16四、试验仿真及结论模块仿真列扫描仿真波形4.1.1所示。4.1.1列扫描仿真波形1s1s第一列的二极管都是亮的。行扫描仿真波形4.1.2所示。4.1.2行扫描仿真波形116行依次循环选通，116列依次循环选通。程序中设置的行脉冲20µs1s，则被选通行的二极管全亮，并随着列信号的循环而移动。试验结论16*161s16s。先开头行扫描，行扫描完成后列再开头扫描，依次循环显示在