W02_PHJ

PHJu/Counter.v

@@ -0,0 +1,37 @@
+module Counter(i_Clk, i_Rst, i_Push, o_LED1,o_LED2, o_FND);
+    input i_Clk; // 50MHz
+    input i_Rst;
+    input [1:0] i_Push;
+    output wire [3:0] o_LED1;
+    output wire [3:0] o_LED2;
+    output wire [6:0] o_FND;
+
+    reg [3:0] c_Cnt, n_Cnt;
+    reg [1:0] c_UpDn, n_UpDn;
+
+    wire fUp;
+    wire fDn;
+
+    FND FND0(c_Cnt, o_FND);
+
+    always@(posedge i_Clk, posedge i_Rst)
+        if(i_Rst) begin
+            c_Cnt = 0;
+            c_UpDn = 2'b11;
+        end else begin
+            c_Cnt = n_Cnt;
+            c_UpDn = n_UpDn;
+        end
+
+    assign {fUp, fDn} = ~i_Push & c_UpDn;
+    assign o_LED1 = c_Cnt >= 10 ? c_Cnt / 10 : 0;
+    assign o_LED2 = c_Cnt >= 10 ? c_Cnt % 10 : c_Cnt;
+
+    always@*
+        begin
+            n_UpDn = i_Push;
+            n_Cnt = fUp ? c_Cnt * 2 :
+                    fDn ? c_Cnt / 2 : c_Cnt + 2;
+        end
+
+endmodule

PHJu/FND.v

@@ -0,0 +1,20 @@
+module FND(i_Num, o_FND);
+  input [3:0] i_Num;
+  output reg [6:0] o_FND;
+
+  always@*
+    case(i_Num)
+      4'h0: o_FND = 7'b1000000;
+      4'h1: o_FND = 7'b1111001;
+      4'h2: o_FND = 7'b0100100;
+      4'h3: o_FND = 7'b0110000;
+      4'h4: o_FND = 7'b0011001;
+      4'h5: o_FND = 7'b0010010;
+      4'h6: o_FND = 7'b0000010;
+      4'h7: o_FND = 7'b1111000;
+      4'h8: o_FND = 7'b0000000;
+      4'h9: o_FND = 7'b0010000;
+      default: o_FND = 7'b1111111;
+  endcase
+
+endmodule

PHJu/tb_Counter.v

@@ -0,0 +1,43 @@
+`timescale 1 ns / 1ns
+module tb_Cnt();
+    reg Clk;
+    reg Rst;
+    reg [1:0] Push;
+    wire[3:0] Cnt_o_LED;
+
+    Counter U0(Clk, Rst, Push, Cnt_o_LED,);
+
+    always
+        #10 Clk = ~Clk;
+
+    initial
+        begin
+            // initialize
+            Clk = 1;
+            Rst = 1;
+            Push = 2'b11;
+
+            // reset
+            @(posedge Clk) Rst = 1;
+            @(negedge Clk) Rst = 0;
+
+            // action
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b01; #200 Push = 2'b11;
+            #200 Push = 2'b10; #200 Push = 2'b11;
+            #200 Push = 2'b10; #200 Push = 2'b11;
+            #200 Push = 2'b10; #200 Push = 2'b11;
+            #200 Push = 2'b10; #200 Push = 2'b11;
+            #200 Push = 2'b10; #200 Push = 2'b11;
+            #200 Push = 2'b10; #200 Push = 2'b11;
+            #200 Push = 2'b10; #200 Push = 2'b11;
+            #200 Push = 2'b10; #200 Push = 2'b11;
+        end
+endmodule