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`timescale 1us/1us
module ser_to_par_tb (
);
logic clk_i;
logic rst_i;
logic dat_i;
logic dat_valid;
logic [7:0] dat_o;
ser_to_par uut (
.clk_i(clk_i),
.rst_i(rst_i),
.dat_i(dat_i),
.dat_o(dat_o),
.dat_valid_i(dat_valid),
.dat_valid_o()
);
string filename;
initial begin
`ifdef DUMP_FILE_NAME
filename=`DUMP_FILE_NAME;
`else
filename="ser_to_par.lxt2";
`endif
$dumpfile(filename); $dumpvars();
clk_i = 0;
rst_i = 1'b1;
dat_i = 1'b1;
dat_valid= 1'b0;
#1
rst_i = 0;
#1
rst_i = 1;
end
always #10 clk_i = ~clk_i;
initial begin
#13;
@(negedge clk_i);
dat_valid = 1'b1;
// start data
dat_i = 1'b0;
@(negedge clk_i);
// - 1 clk cycle, 1 bit later:
dat_i = 1'b1;
repeat (7) @(negedge clk_i);
dat_valid = 1'b0;
// - 7 clk cycle, 7 bits later:
assert (dat_o == 8'hfe)
else $error("Excected dat_o to be hfe, was h%x", dat_o);
@(negedge clk_i);
$finish();
end
endmodule
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