diff options
| author | Clifford Wolf <clifford@clifford.at> | 2016-01-31 16:22:51 +0100 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2016-01-31 16:22:51 +0100 |
| commit | 6470f00ce49eecf12ac9692652b37d244d468034 (patch) | |
| tree | a052afe5cd645974a21463549677b329c5b8cfcc /examples/iceblink/example.v | |
| parent | 4fb1bfd2df4188a9563c4b9cbca1355ae4339f56 (diff) | |
| parent | 438c0b55aea79da73f9be6ace4ddf2b77b749774 (diff) | |
| download | icestorm-6470f00ce49eecf12ac9692652b37d244d468034.tar.gz icestorm-6470f00ce49eecf12ac9692652b37d244d468034.tar.bz2 icestorm-6470f00ce49eecf12ac9692652b37d244d468034.zip | |
Merge pull request #26 from kraiskil/master
Two small improvements.
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 |