1 files changed, 35 insertions, 0 deletions
diff --git a/de1-gui/button_pusher.sv b/de1-gui/button_pusher.sv
new file mode 100644
index 0000000..1d9d6b0
--- /dev/null
+++ b/de1-gui/button_pusher.sv
@@ -0,0 +1,35 @@
+`timescale 1ps / 1ps
+
+module button_pusher(input logic CLK, input logic [9:0] SW, input logic [3:0] KEY, output logic [9:0] LEDR, output logic [6:0] HEX5, output logic [6:0] HEX4, output logic [6:0] HEX3, output logic [6:0] HEX2, output logic [6:0] HEX1, output logic [6:0] HEX0);
+    assign LEDR = SW;
+    logic RST_N;
+    assign RST_N = KEY[0];
+    logic [2:0] hex0_bars;
+    assign HEX0 = { hex0_bars[1], KEY[3], KEY[2], hex0_bars[2], KEY[0], KEY[1], hex0_bars[0] };
+    logic [34:0] upper_hexs;
+    assign HEX1 = upper_hexs[6:0];
+    assign HEX2 = upper_hexs[13:7];
+    assign HEX3 = upper_hexs[20:14];
+    assign HEX4 = upper_hexs[27:21];
+    assign HEX5 = upper_hexs[34:28];
+    logic [3:0] last_KEY;
+
+    always_ff @(posedge CLK) begin
+        if (~RST_N) begin
+            upper_hexs <= 35'b1000110_0001100_0000110_1001000_1111111;
+            hex0_bars <= 3'b110;
+        end else begin
+            last_KEY <= KEY;
+            if (~KEY[3] && last_KEY[3]) begin
+                upper_hexs <= { upper_hexs[27:0], upper_hexs[34:28] };
+                hex0_bars <= { hex0_bars[1:0], hex0_bars[2] };
+            end else if (~KEY[2] && last_KEY[2]) begin
+                upper_hexs <= { upper_hexs[30:0], upper_hexs[34:31] };
+                hex0_bars <= { hex0_bars[1:0], hex0_bars[2] };
+            end else if (~KEY[1] && last_KEY[1]) begin
+                upper_hexs <= { upper_hexs[33:0], upper_hexs[34] };
+                hex0_bars <= { hex0_bars[1:0], hex0_bars[2] };
+            end
+        end
+    end
+endmodule: button_pusher