1 files changed, 57 insertions, 0 deletions
diff --git a/spi_tb.v b/spi_tb.v
new file mode 100644
index 0000000..f042f8d
--- /dev/null
+++ b/spi_tb.v
@@ -0,0 +1,57 @@
+`timescale 1ns/1ps
+
+module main;
+  reg clk = 0;
+  always #1 clk = ~clk;
+
+  reg go = 0;
+  reg rst = 1;
+  reg [7:0] i_data = 8'hAA;
+  wire [7:0] o_data;
+  wire busy;
+
+  wire spi_clk;
+  wire spi_mosi;
+  reg spi_miso = 0;
+
+  spi_controller dut(
+    .clk(clk), .rst(rst), .go(go /*& ~busy*/),
+    .i_data(i_data), .o_data(o_data),
+    .busy(busy),
+
+    .spi_clk(spi_clk),
+    .spi_mosi(spi_mosi),
+    .spi_miso(spi_miso));
+
+  initial begin
+    $dumpfile("main.vcd");
+    $dumpvars(2, main);
+
+    //$display("Hello world!");
+    //$monitor("T%03d | clk: %0d", $time, clk);
+
+    #2 rst = 0;
+       go = 1;
+    #2 go = 0;
+
+    #3 spi_miso = 1;
+    #4 spi_miso = 0;
+    #4 spi_miso = 1;
+    #4 spi_miso = 0;
+    #4 spi_miso = 1;
+    #4 spi_miso = 0;
+    #4 spi_miso = 1;
+    #4 spi_miso = 0;
+    #4 spi_miso = 1;
+    #4 spi_miso = 0;
+    #4 spi_miso = 1;
+
+    #32 $finish;
+  end
+
+  initial begin
+    #34 i_data = 8'h55;
+        go = 1;
+    #2  go = 0;
+  end
+endmodule