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[/] [usb_dongle_fpga/] [trunk/] [beh/] [usb_mem_test.vhd] - Rev 55
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------------------------------------------------------------------ -- Universal dongle board source code -- -- Copyright (C) 2006 Artec Design <jyrit@artecdesign.ee> -- -- This source code is free hardware; you can redistribute it and/or -- modify it under the terms of the GNU Lesser General Public -- License as published by the Free Software Foundation; either -- version 2.1 of the License, or (at your option) any later version. -- -- This source code 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 -- Lesser General Public License for more details. -- -- You should have received a copy of the GNU Lesser General Public -- License along with this library; if not, write to the Free Software -- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -- -- -- The complete text of the GNU Lesser General Public License can be found in -- the file 'lesser.txt'. -------------------------------------------------------------------------------- -- Company: -- Engineer: -- -- Create Date: 10:19:29 09/28/2006 -- Design Name: usb2mem -- Module Name: C:/projects/USB_dongle/beh/usb_mem_test.vhd -- Project Name: simulation -- Target Device: -- Tool versions: -- Description: -- -- VHDL Test Bench Created by ISE for module: usb2mem -- -- Dependencies: -- -- Revision: -- Revision 0.01 - File Created -- Additional Comments: -- -- Notes: -- This testbench has been automatically generated using types std_logic and -- std_logic_vector for the ports of the unit under test. Xilinx recommends -- that these types always be used for the top-level I/O of a design in order -- to guarantee that the testbench will bind correctly to the post-implementation -- simulation model. -------------------------------------------------------------------------------- LIBRARY ieee; USE ieee.std_logic_1164.ALL; USE ieee.std_logic_unsigned.all; USE ieee.numeric_std.ALL; ENTITY usb_mem_test_vhd IS END usb_mem_test_vhd; ARCHITECTURE behavior OF usb_mem_test_vhd IS -- Component Declaration for the Unit Under Test (UUT) COMPONENT usb2mem PORT( clk25 : IN std_logic; reset_n : IN std_logic; mem_di : IN std_logic_vector(15 downto 0); mem_ack : IN std_logic; usb_txe_n : IN std_logic; usb_rxf_n : IN std_logic; usb_bd : INOUT std_logic_vector(7 downto 0); mem_addr : OUT std_logic_vector(23 downto 0); mem_do : OUT std_logic_vector(15 downto 0); mem_wr : OUT std_logic; mem_val : OUT std_logic; mem_cmd : OUT std_logic; usb_rd_n : OUT std_logic; usb_wr : OUT std_logic ); END COMPONENT; --Inputs SIGNAL clk25 : std_logic := '0'; SIGNAL reset_n : std_logic := '0'; SIGNAL mem_ack : std_logic := '0'; SIGNAL usb_txe_n : std_logic := '0'; SIGNAL usb_rxf_n : std_logic := '1'; SIGNAL mem_di : std_logic_vector(15 downto 0) := x"3210"; --BiDirs SIGNAL usb_bd : std_logic_vector(7 downto 0); --Outputs SIGNAL mem_addr : std_logic_vector(23 downto 0); SIGNAL mem_do : std_logic_vector(15 downto 0); SIGNAL mem_wr : std_logic; SIGNAL mem_val : std_logic; SIGNAL mem_cmd : std_logic; SIGNAL usb_rd_n : std_logic; SIGNAL usb_wr : std_logic; BEGIN -- Instantiate the Unit Under Test (UUT) uut: usb2mem PORT MAP( clk25 => clk25, reset_n => reset_n, mem_addr => mem_addr, mem_do => mem_do, mem_di => mem_di, mem_wr => mem_wr, mem_val => mem_val, mem_ack => mem_ack, mem_cmd => mem_cmd, usb_rd_n => usb_rd_n, usb_wr => usb_wr, usb_txe_n => usb_txe_n, usb_rxf_n => usb_rxf_n, usb_bd => usb_bd ); clocker : process is begin wait for 20 ns; clk25 <=not (clk25); end process clocker; VCI_ACK : process is begin wait until mem_val='1'; wait for 100 ns; mem_ack <='1'; wait until mem_val='0'; mem_ack <='0'; end process VCI_ACK; tb : PROCESS BEGIN -- Wait 100 ns for global reset to finish wait for 100 ns; reset_n <='1'; -- STATUS CHECK COMMAND usb_rxf_n <='0'; usb_bd <=x"C5"; wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END STATUS CHECK COMMAND wait for 800 ns; -- A0 COMMAND usb_rxf_n <='0'; usb_bd <=x"02"; wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait for 20 ns; usb_bd <=x"A0"; wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END A0 COMMAND wait for 800 ns; -- A1 COMMAND usb_rxf_n <='0'; usb_bd <=x"00"; wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait for 20 ns; usb_bd <=x"A1"; wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END A1 COMMAND wait for 800 ns; -- A2 COMMAND usb_rxf_n <='0'; usb_bd <=x"00"; wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait for 20 ns; usb_bd <=x"A2"; wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END A2 COMMAND wait for 800 ns; -- CD COMMAND usb_rxf_n <='0'; usb_bd <=x"01"; wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait for 20 ns; usb_bd <=x"CD"; wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END CD COMMAND wait for 800 ns; -- E8 COMMAND usb_rxf_n <='0'; usb_bd <=x"01"; --this should mean 2 word to write wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait for 20 ns; usb_bd <=x"E8"; wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END E8 COMMAND wait for 2000 ns; -- SEND Data count to flash COMMAND usb_rxf_n <='0'; usb_bd <=x"01"; --this should mean 2 word to write wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait for 20 ns; usb_bd <=x"00"; --count 00 means 1 word wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END COMMAND wait for 800 ns; -- SEND raw Data usb_rxf_n <='0'; usb_bd <=x"CA"; --this should mean 1 word to write wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait for 20 ns; usb_bd <=x"FE"; --count 00 means 1 word wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END send data wait for 800 ns; -- SEND raw Data usb_rxf_n <='0'; usb_bd <=x"BE"; --this should mean 1 word to write wait until usb_rd_n='0'; --wait to go low --first read wait until usb_rd_n='1'; --wait to go low wait for 20 ns; usb_bd <=x"CD"; --count 00 means 1 word wait until usb_rd_n='0'; --wait to go low --second read wait until usb_rd_n='1'; --wait to go low usb_bd <=(others=>'Z'); usb_rxf_n <='1'; -- END send data wait for 800 ns; wait; -- will wait forever END PROCESS; END;
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