EEPW论坛

视频地址：http://union.bokecc.com/flash/single/290666218ACBA694_ADEEBE819D4B8D38_false_EEA982EE6B20F4D1_1/player.swf


照猫画虎的学着传一下视频，跑马灯程序是在网友程序改了一下方向。
程序如下： 
module LEDMO( clk, rst, led0,led1,led2,led3,led4,led5,led6,led7, led_r,led_g,led_y ); 
input clk; input rst; 
output led0,led1,led2,led3,led4,led5,led6,led7; 
output led_r,led_g,led_y; 
reg[31:0] count; 
reg[10:0] led_out; 
always @(posedge clk or negedge rst) 
begin 
 if(!rst)
         count<=31'd0;
        else
         if(count==31'd220_000_000)
           count<=31'd0;
         else
           count<=count+1'b1;
      end
     
always @(posedge clk or negedge rst)
      begin
        if(!rst)
         led_out <= 1'b0;
        else
         if(count >= 31'd0 && count < 31'd20_000_000)
          led_out <= 11'b011_1111_1111;
         else if(count >= 31'd20_000_000 && count < 31'd40_000_000)
          led_out <= 11'b101_1111_1111;
         else if(count >= 31'd40_000_000 && count < 31'd60_000_000)
          led_out <= 11'b110_1111_1111;
         else if(count >= 31'd60_000_000 && count < 31'd80_000_000)
          led_out <= 11'b111_0111_1111;
         else if(count >= 31'd80_000_000 && count < 31'd100_000_000)
          led_out <= 11'b111_1011_1111;
         else if(count >= 31'd100_000_000 && count < 31'd120_000_000)
          led_out <= 11'b111_1101_1111;
         else if(count >= 31'd120_000_000 && count < 31'd140_000_000)
          led_out <= 11'b111_1110_1111;
         else if(count >= 31'd140_000_000 && count < 31'd160_000_000)
          led_out <= 11'b111_1111_0111;
         else if(count >= 31'd160_000_000 && count < 31'd180_000_000)
          led_out <= 11'b111_1111_1011;
         else if(count >= 31'd180_000_000 && count < 31'd200_000_000)
          led_out <= 11'b111_1111_1101;
         else if(count >= 31'd200_000_000 && count < 31'd220_000_000)
          led_out <= 11'b111_1111_1110;
      end
     
assign led0 =led_out[0];
assign led1 =led_out[1];
assign led2 =led_out[2];
assign led3 =led_out[3];
assign led4 =led_out[4];
assign led5 =led_out[5];
assign led6 =led_out[6];
assign led7 =led_out[7];

assign led_r = led_out[8];
assign led_g = led_out[9];
assign led_y = led_out[10];

endmodule