////Convolution Encoder///// module conv_encoder(x,clk,rese conv_encoder(x,clk,reset,state,en_output); t,state,en_output); input x; input clk; input reset; integer i=1; //output i; //reg i; output [1:0] state; output [1:0] en_output; //output [i:0] en_out; //reg din; reg [1:18] en_out; reg [1:0] state; reg [1:0] en_output; reg [1:8] data=8'b11010110; //reg [i:0] en_out; // //initial //begin //if (reset==1'b1) //begin //din=0; //state[1]=1'b0; //state[0]=1'b0; //en_output[1]=1'b0; //en_output[0]=1'b0; //$display("%b\t %b\t",state,en_output); //end //else //begin always @ ( posedge clk) begin //always @(posedge clk) if (reset==1'b1) begin //din=0; state[1]=1'b0; state[0]=1'b0; en_output[1]=1'b0; en_output[0]=1'b0; //$display("%b\t %b\t %b\n",din,state,en_outpu %b\n",din,state,en_output); t); end else begin //din<=x; state[0]<=state[1]; state[1]<=x;
//$display("%b\t %b\n",din,x); en_output[1]<=x ^ state[0]; en_output[0]<=x ^ state[1] ^ state[0];
en_out[i]<=en_output[1]; en_out[i+1]<=en_output[0]; i=i+2; $display("message bits are %b\n",data); $display("encoded output is %b\n",en_out); //$display("%b\t %b\n",x,en_output); end
//$display("%b\t %b\t %b\n",din,en_output,state); end
endmodule
////Convolution Encoder_Test Bench///// module conv_encoder_tb; // Inputs reg x; reg clk; reg reset; reg [1:8] data; integer I; // Outputs //wire din; wire [1:0] state; wire [1:0] en_output; // Instantiate the Unit Under Test (UUT) conv_encoder uut ( .x(x), .clk(clk), .reset(reset), .state(state), .en_output(en_output) ); initial begin // Initialize Inputs x=0; clk=0; //reset=0;
I<=1; data=8'b1101_0110;
forever #10 clk=~clk;
end initial begin //#5 x=0; #10 reset=1; #10 reset=0; end always @( posedge clk) begin if(I>11) begin $display("%b",en_output); $finish; end else begin x<= data[I]; I<=I+1; //$display("%d\t %d\t %d\n",x,I,data[I]); end
end //always #5 clk=~clk; endmodule
