diff options
Diffstat (limited to 'examples/iceblink/example.v')
-rw-r--r-- | examples/iceblink/example.v | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/examples/iceblink/example.v b/examples/iceblink/example.v new file mode 100644 index 0000000..6bccc1e --- /dev/null +++ b/examples/iceblink/example.v @@ -0,0 +1,24 @@ +/* Binary counter displayed on LEDs (the 4 green ones on the right). + * Changes value about once a second. + */ +module top ( + input clk, + output LED2, + output LED3, + output LED4, + output LED5 +); + + localparam BITS = 4; + localparam LOG2DELAY = 22; + + reg [BITS+LOG2DELAY-1:0] counter = 0; + reg [BITS-1:0] outcnt; + + always@(posedge clk) begin + counter <= counter + 1; + outcnt <= counter >> LOG2DELAY; + end + + assign {LED2, LED3, LED4, LED5} = outcnt; +endmodule |