module read(clk,read,loop,sum,Rad); input clk,read,loop; input [10:0] sum; output reg [10:0] Rad; reg flag; reg [10:0] ad; reg [10:0] sum0; always @ (posedge clk) begin if(read==1) begin if(loop==0) begin if(flag==0) begin if(sum0<sum-3) begin ad=ad+1; sum0=sum0+1; end else if(sum0==sum-3) begin ad=1; sum0=0; flag=1; end end end else if(loop==1) begin flag=0; if(sum0<sum-3) begin ad=ad+1; sum0=sum0+1; end else if(sum0==sum-3) begin ad=1; sum0=0; end end end else if(read==0) begin flag=0; ad=1; sum0=0; end Rad=ad; end endmodule 将代码改成既能一直读波形又能只读一个波形的代码

以下是修改后的代码：

module read(clk,read,loop,sum,Rad);  
    input clk,read,loop; 
    input [10:0] sum; 
    output reg [10:0] Rad; 
    reg flag; 
    reg [10:0] ad; 
    reg [10:0] sum0;  
    
    always @ (posedge clk) begin 
        if(read==1) begin 
            if(loop==0) begin 
                if(flag==0) begin 
                    if(sum0<sum-3) begin 
                        ad=ad+1;  
                        sum0=sum0+1; 
                    end else if(sum0==sum-3) begin 
                        ad=1; 
                        sum0=0; 
                        flag=1; 
                    end 
                end 
            end else if(loop==1) begin 
                if(flag==0) begin 
                    if(sum0<sum-3) begin 
                        ad=ad+1; 
                        sum0=sum0+1; 
                    end else if(sum0==sum-3) begin 
                        ad=1; 
                        sum0=0; 
                        flag=1; 
                    end 
                end else begin 
                    flag=0; 
                    ad=1; 
                    sum0=0; 
                end 
            end 
            Rad=ad; 
        end else begin 
            flag=0; 
            ad=1; 
            sum0=0; 
            Rad=0; 
        end
    end 
endmodule 

修改后的代码增加了一个新的判断条件，即当loop为1时，需要进行不同的操作。同时，当read为0时，输出的Rad也被修改为0，以表示此时没有读到波形。