Improve blinky testbench, double blink frequency

Signed-off-by: Clifford Wolf <clifford@clifford.at>

2 files changed, 7 insertions, 4 deletions

diff --git a/ice40/blinky.v b/ice40/blinky.v
index a45021d2..36eaee86 100644
--- a/ice40/blinky.v
+++ b/ice40/blinky.v
@@ -13,7 +13,7 @@ module blinky (
     );
 
     localparam BITS = 5;
-    localparam LOG2DELAY = 22;
+    localparam LOG2DELAY = 21;
 
     reg [BITS+LOG2DELAY-1:0] counter = 0;
     reg [BITS-1:0] outcnt;
diff --git a/ice40/blinky_tb.v b/ice40/blinky_tb.v
index d5c40982..f80b5e64 100644
--- a/ice40/blinky_tb.v
+++ b/ice40/blinky_tb.v
@@ -14,9 +14,12 @@ module blinky_tb;
     );
 
     initial begin
-        $dumpfile("blinky_tb.vcd");
-        $dumpvars(0, blinky_tb);
-        repeat (9000000) @(posedge clk);
+        // $dumpfile("blinky_tb.vcd");
+        // $dumpvars(0, blinky_tb);
+        repeat (10) begin
+            repeat (900000) @(posedge clk);
+            $display(led1, led2, led3, led4, led5);
+        end
         $finish;
     end
 endmodule