feat(L03): add blinker and synchronous logic card

2026-07-21 16:47:33 +02:00
commit 0a130e4eae
42 changed files with 7514 additions and 0 deletions
@@ -0,0 +1,36 @@
+module tb;
+    logic clk = 0;
+    logic rst = 1;
+    logic led;
+    logic [3:0] count;
+    integer edge_count = 0;
+    integer expected_edges [0:3] = '{4, 8, 12, 16};
+    logic previous = 0;
+    string trace_file;
+
+    counter_blinker dut (.*);
+    always #1 clk = ~clk;
+
+    initial begin
+        if ($value$plusargs("trace=%s", trace_file)) begin
+            $dumpfile(trace_file);
+            $dumpvars(0, tb);
+        end
+        repeat (2) @(posedge clk);
+        @(negedge clk);
+        rst = 0;
+        for (integer cycle = 1; cycle <= 16; cycle += 1) begin
+            @(posedge clk); #1;
+            if (led != previous) begin
+                if (cycle != expected_edges[edge_count])
+                    $fatal(1, "FAIL task02 edge=%0d cycle=%0d", edge_count, cycle);
+                edge_count += 1;
+            end
+            if (led != count[2]) $fatal(1, "FAIL task02 led/count mismatch");
+            previous = led;
+        end
+        if (edge_count != 4) $fatal(1, "FAIL task02 edge_count=%0d", edge_count);
+        $display("PASS task02 led_edges=4,8,12,16 period=8");
+        $finish;
+    end
+endmodule