开发板上有一排LED灯，共26个，LEDR17-LEDR0-LEDG7-LEDG0;

实现以1s间隔从左至右流，循环不断~

完整代码如下（用的依旧是自动生成的模板）：

//=======================================================//  This code is generated by Terasic System Builder//=======================================================module LED_Test(     CLOCK //    CLOCK_50,    RSTn,     LED //    LEDG,    LEDR );//=======================================================//  PORT declarations//======================================================= CLOCK //input                          CLOCK_50;input                            RSTn; LED //output             [8:0]        LEDG;output            [17:0]        LEDR;//=======================================================//  Structural coding//======================================================= //-----------------------定时器模板-------------------------- //----1MS定时器 parameter T1MS = 16'd49_999;reg    [15:0]    Count1;always@(posedge CLOCK_50 or negedge RSTn)    if(!RSTn)        Count1 <= 16'd0;    else if(Count1 == T1MS)        Count1 <= 16'd0;    else        Count1 <= Count1 + 1'b1;                //----1S定时器reg    [9:0]    Count_MS;always@(posedge CLOCK_50 or negedge RSTn)    if(!RSTn)        Count_MS <= 10'd0;    else if(Count_MS == 16'd1000)        Count_MS <= 10'd0;    else if(Count1 == T1MS)        Count_MS <= Count_MS + 1'b1;  //---------------------------------------------------------- //---------------------流水灯实现---------------------------reg    [26:0]    rLED;always@(posedge CLOCK_50 or negedge RSTn)    if(!RSTn)        rLED <= 27'b1000_0000_0000_0000_0000_0000_00;    else if(Count_MS == 16'd1000)        begin            if(rLED == 27'b0000_0000_0000_0000_0000_0000_001)    //首尾交接处                rLED <= 27'b1000_0000_0000_0000_0000_0000_000;            else if(rLED == 27'b0000_0000_0000_0000_0100_0000_000)   //红绿LED交接处                rLED <= 27'b0000_0000_0000_0000_0001_0000_000;            else                rLED <= {
   1'b0,rLED[26:1]};        end //----------------------------------------------------------------- // 输出赋值assign LEDR = rLED[26:9];assign LEDG = {
   1'b0,rLED[7:0]};  //由于LEDG8跟它们一排LED不在同一排，所以就分出来置零好了endmodule