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高手们 别笑我..我对这个确实不会.可是实习马上就要验收了..用MODELSIM 仿真..再网上看了个 学长 写的代码 没看懂.更不会写仿真激励 .希望高手们 给我解答一下吧。那个控制模块确实没看懂 这种分模块的 激励怎么写呢？。。小弟在这谢谢你们了...您的大恩大德 小弟记住了 以后多来论坛里报答 代码如下：
分频模块： module fenpinqi(clk,rst,clk_odd);
input
clk,rst;
output
clk_odd;
reg
clk_odd;
reg[13:0]
count;
parameter
N = 10000;
always @ (posedge clk)
if(! rst)
begin
count <= 1'b0;
clk_odd <= 1'b0;
end
else
if ( count < N/2-1)
begin
count <= count + 1'b1;
end
else
begin
count <= 1'b0;
clk_odd <= ~clk_odd;
end
endmodule 控制及计时模块： module control(led,car,rst,clk,count_H_1,count_L_1,count_H_2,count_L_2);
output [3:0]count_H_1,count_L_1,count_H_2,count_L_2;
output [5:0]led;
input clk,rst,car;
reg [5:0] led;
reg [3:0]count_H_1,count_L_1,count_H_2,count_L_2;
reg [1:0]state;
parameter S0=2'b00,
S1=2'b01,
S2=2'b10,
S3=2'b11;
always @(posedge clk or negedge rst)
if(!rst)
begin
led=6'b010100;
state=S0;
count_H_1=4'b0000;count_L_1=4'b0000;
count_H_2=4'b0000;count_L_2=4'b0000;
end
else
begin
case(state)
S0:
begin
if(!car)
begin
led=6'b010100;
count_H_1=4'b0100;count_L_1=4'b0101;
end
else if(count_L_1==0)
begin
if(count_H_1==0)
begin
led=6'b001100;
count_H_1=4'b0000;count_L_1=4'b0100;
state<=S1;
end
else
begin
count_H_1<=count_H_1-1'b1;
count_L_1<=4'b1001;
end
end
else begin
count_L_1<=count_L_1-1'b1;
//
count_L_2<=count_L_2-1'b1;
end
if(!car)
begin
count_H_2=4'b0101;count_L_2=4'b0000;
end
else if(count_L_2==0)
begin
count_H_2<=count_H_2-1'b1;
count_L_2<=4'b1001;
end
else begin
count_L_2<=count_L_2-1'b1;
end
end
S1:
begin
if(count_L_1==0)
begin
if(count_H_1==0)
begin
led=6'b100010;
count_H_1=4'b0010;count_L_1=4'b1001;
count_H_2=4'b0010;count_L_2=4'b0100;
state<=S2;
end
else
begin
count_H_1<=count_H_1-1'b1;
count_H_2<=count_H_2-1'b1;
end
end
else begin
count_L_1<=count_L_1-1'b1;
count_L_2<=count_L_2-1'b1;
end
end
S2:
begin
if(count_L_2==0)
begin
if(count_H_2==0)
begin
led=6'b100001;
count_H_2=4'b0000;count_L_2=4'b0100;
state<=S3;
end
else
begin
count_H_2<=count_H_2-1'b1;
count_L_2=4'b1001;
end
end
else begin
count_L_2<=count_L_2-1'b1;
end
if(count_L_1==0)
begin
begin
count_H_1<=count_H_1-1'b1;
count_L_1=4'b1001;
end
end
else begin
count_L_1<=count_L_1-1'b1;
end
end
S3:
begin
if(count_L_2==0)
begin
if(count_H_2==0)
begin
led=6'b010100;
count_H_1=4'b0100;count_L_1=4'b1001;
count_H_2=4'b0100;count_L_2=4'b0100;
state<=S0;
end
else
begin
count_H_1<=count_H_1-1'b1;
count_H_2<=count_H_2-1'b1;
end
end
else
begin
count_L_1<=count_L_1-1'b1;
count_L_2<=count_L_2-1'b1;
end
end
endcase
end
endmodule 扫描译码显示模块： module saomiao(rst,clk,count_H_1,count_L_1,count_H_2,count_L_2,sel,seg);
input rst,clk;
input [3:0]count_H_1,count_L_1,count_H_2,count_L_2;
output [6:0]sel;
output [3:0]seg;
reg [6:0]sel;
reg [3:0]seg;
reg [15:0] count;
reg [1:0] cnt;
reg
[3:0] data;
reg clk_odd;
always@(posedge clk or negedge rst)//50M-1k,50M/1k/2//??,50Mhz~1khz,???50%
begin
if(!rst)begin
count<=0;
clk_odd<=0;
end
else if(count==16'd2)
begin
clk_odd<=~clk_odd;
count<=0;
end
else
count<=count+1'b1;
end
always @(negedge rst or posedge clk_odd)//????1ms
if (!rst)begin
cnt<=2'b00;
end
else cnt<=cnt+1'b1;
always@(negedge rst or posedge clk)
//???? if(!rst)
begin
// sel = 7'b0000000 ;
seg = 4'b1111 ;
end
else begin
case (cnt)
2'b00: begin
seg =4'b1110 ;// ?????
data=count_H_1;
end
2'b01: begin
seg
= 4'b1101 ;// ?????
data
=count_L_1;
end
2'b10:begin // ?????
seg= 4'b1011 ;
data=count_H_2;
end
2'b11: begin// ?????
seg= 4'b0111 ;
data=count_L_2;
end
default :
begin
//
sel = 8'b0000000 ;
seg = 4'b0000 ;
end
endcase
end
always @ (data or seg)begin
case(data)
4'b0000:sel=7'b1111110;
4'b0001:sel=7'b0110000;
4'b0010:sel=7'b1101101;
4'b0011:sel=7'b1111001;
4'b0100:sel=7'b0110011;
4'b0101:sel=7'b1011011;
4'b0110:sel=7'b1011111;
4'b0111:sel=7'b1110000;
4'b1000:sel=7'b1111111;
4'b1001:sel=7'b1111011;
default:sel=7'b1111110;
endcase
end
endmodule
顶层模块：
module jiaotongdeng(clk,rst,car,led,sel,seg);
input clk,rst,car; output [3:0] seg; output [6:0] sel; output [5:0] led; wire [3:0]count_H_1,count_L_1,count_H_2,count_L_2; wire
clk_odd; saomiao ee(rst,clk,count_H_1,count_L_1,count_H_2,count_L_2,sel,seg); control rr(led,car,rst,clk_odd,count_H_1,count_L_1,count_H_2,count_L_2); fenpinqi tt(clk,rst,clk_odd); endmodule | 
/2 
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发表于 2011-3-2 08:48:12
发表于 2011-3-2 10:14:58
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