axi_write_to_sram.sv (1075B)
1 // Copyright 2014 Brian Swetland <swetland@frotz.net> 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 `timescale 1ns / 1ps 16 17 `ifdef verilator 18 module testbench(inout clk); 19 `else 20 module testbench(); 21 reg clk = 0; 22 always #5 clk = ~clk; 23 `endif 24 25 reg go = 0; 26 27 axi_ifc axi0(); 28 29 axi_pattern_writer writer0( 30 .clk(clk), 31 .trigger(go), 32 .m(axi0) 33 ); 34 35 axi_sram sram0( 36 .clk(clk), 37 .s(axi0) 38 ); 39 40 integer count = 0; 41 42 always_ff @(posedge clk) begin 43 count <= count + 1; 44 case (count) 45 5: go <= 1; 46 6: go <= 0; 47 30: go <= 1; 48 31: go <= 0; 49 100: $finish(); 50 endcase 51 end 52 53 endmodule 54