diff options
Diffstat (limited to 'fpga/usrp2/gpif/gpif_tb.v')
| -rw-r--r-- | fpga/usrp2/gpif/gpif_tb.v | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/fpga/usrp2/gpif/gpif_tb.v b/fpga/usrp2/gpif/gpif_tb.v new file mode 100644 index 000000000..686284c2b --- /dev/null +++ b/fpga/usrp2/gpif/gpif_tb.v @@ -0,0 +1,142 @@ +// +// Copyright 2011 Ettus Research LLC +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. +// + + +module gpif_tb(); + + reg sys_clk = 0; + reg sys_rst = 1; + reg gpif_clk = 0; + reg gpif_rst = 1; + + reg [15:0] gpif_data; + reg WR = 0, EP = 0; + + wire CF, DF; + + wire gpif_full_d, gpif_full_c; + wire [18:0] data_o, ctrl_o, data_splt; + wire src_rdy, dst_rdy, src_rdy_splt, dst_rdy_splt; + wire ctrl_src_rdy, ctrl_dst_rdy; + + assign ctrl_dst_rdy = 1; + + initial $dumpfile("gpif_tb.vcd"); + initial $dumpvars(0,gpif_tb); + + initial #1000 gpif_rst = 0; + initial #1000 sys_rst = 0; + always #64 gpif_clk <= ~gpif_clk; + always #47.9 sys_clk <= ~sys_clk; + + wire [18:0] data_int; + wire src_rdy_int, dst_rdy_int; + + assign dst_rdy_splt = 1; + + gpif_wr gpif_write + (.gpif_clk(gpif_clk), .gpif_rst(gpif_rst), + .gpif_data(gpif_data), .gpif_wr(WR), .gpif_ep(EP), + .gpif_full_d(DF), .gpif_full_c(CF), + + .sys_clk(sys_clk), .sys_rst(sys_rst), + .data_o(data_int), .src_rdy_o(src_rdy_int), .dst_rdy_i(dst_rdy_int), + .ctrl_o(ctrl_o), .ctrl_src_rdy_o(ctrl_src_rdy), .ctrl_dst_rdy_i(ctrl_dst_rdy) ); + + packet_reframer tx_packet_reframer + (.clk(sys_clk), .reset(sys_rst), .clear(0), + .data_i(data_int), .src_rdy_i(src_rdy_int), .dst_rdy_o(dst_rdy_int), + .data_o(data_o), .src_rdy_o(src_rdy), .dst_rdy_i(dst_rdy)); + + packet_splitter #(.FRAME_LEN(256)) rx_packet_splitter + (.clk(sys_clk), .reset(sys_rst), .clear(0), + .frames_per_packet(2), + .data_i(data_o), .src_rdy_i(src_rdy), .dst_rdy_o(dst_rdy), + .data_o(data_splt), .src_rdy_o(src_rdy_splt), .dst_rdy_i(dst_rdy_splt)); + + always @(posedge sys_clk) + if(ctrl_src_rdy & ctrl_dst_rdy) + $display("CTRL: %x",ctrl_o); + + always @(posedge sys_clk) + if(src_rdy_splt & dst_rdy_splt) + begin + if(data_splt[16]) + $display("<-------- DATA SOF--------->"); + $display("DATA: %x",data_splt); + if(data_splt[17]) + $display("<-------- DATA EOF--------->"); + end + + initial + begin + #10000; + repeat (1) + begin + @(posedge gpif_clk); + + WR <= 1; + gpif_data <= 256; // Length + @(posedge gpif_clk); + gpif_data <= 16'h00; + @(posedge gpif_clk); + repeat(254) + begin + gpif_data <= gpif_data + 1; + @(posedge gpif_clk); + end + WR <= 0; + + while(DF) + @(posedge gpif_clk); + repeat (16) + @(posedge gpif_clk); + + WR <= 1; + repeat(256) + begin + gpif_data <= gpif_data - 1; + @(posedge gpif_clk); + end + WR <= 0; + + +/* + while(DF) + @(posedge gpif_clk); + + repeat (20) + @(posedge gpif_clk); + WR <= 1; + gpif_data <= 16'h5; + @(posedge gpif_clk); + gpif_data <= 16'h00; + @(posedge gpif_clk); + repeat(254) + begin + gpif_data <= gpif_data - 1; + @(posedge gpif_clk); + end + WR <= 0; + */ + end + end // initial begin + + initial #200000 $finish; + + +endmodule // gpif_tb |