-------------------------------------------------------------------------------- -- Company: ETH Zurich, Institute for Particle Physics -- Engineer: Q. Weitzel, P. Vogler -- -- Create Date: 12.07.2010 -- Design Name: -- Module Name: FTU_top_tb.vhd -- Project Name: -- Target Device: -- Tool versions: -- Description: Testbench for top level entity of FACT FTU board -- -- VHDL Test Bench Created by ISE for module: FTU_top -- -- 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; library UNISIM; use UNISIM.VComponents.all; entity FTU_top_tb is end FTU_top_tb; architecture behavior of FTU_top_tb is -- Component Declaration for the Unit Under Test (UUT) component FTU_top port( -- global control ext_clk : IN STD_LOGIC; -- external clock from FTU board brd_add : IN STD_LOGIC_VECTOR(5 downto 0); -- geographic board/slot address --brd_id : IN STD_LOGIC_VECTOR(7 downto 0); -- local solder-programmable board ID -- rate counters LVDS inputs -- use IBUFDS differential input buffer patch_A_p : IN STD_LOGIC; -- logic signal from first trigger patch patch_A_n : IN STD_LOGIC; patch_B_p : IN STD_LOGIC; -- logic signal from second trigger patch patch_B_n : IN STD_LOGIC; patch_C_p : IN STD_LOGIC; -- logic signal from third trigger patch patch_C_n : IN STD_LOGIC; patch_D_p : IN STD_LOGIC; -- logic signal from fourth trigger patch patch_D_n : IN STD_LOGIC; trig_prim_p : IN STD_LOGIC; -- logic signal from n-out-of-4 circuit trig_prim_n : IN STD_LOGIC; -- DAC interface sck : OUT STD_LOGIC; -- serial clock to DAC mosi : OUT STD_LOGIC; -- serial data to DAC, master-out-slave-in clr : OUT STD_LOGIC; -- clear signal to DAC cs_ld : OUT STD_LOGIC; -- chip select or load to DAC -- RS-485 interface to FTM rx : IN STD_LOGIC; -- serial data from FTM tx : OUT STD_LOGIC; -- serial data to FTM rx_en : OUT STD_LOGIC; -- enable RS-485 receiver tx_en : OUT STD_LOGIC; -- enable RS-485 transmitter -- analog buffer enable enables_A : OUT STD_LOGIC_VECTOR(8 downto 0); -- individual enables for analog inputs enables_B : OUT STD_LOGIC_VECTOR(8 downto 0); -- individual enables for analog inputs enables_C : OUT STD_LOGIC_VECTOR(8 downto 0); -- individual enables for analog inputs enables_D : OUT STD_LOGIC_VECTOR(8 downto 0); -- individual enables for analog inputs -- testpoints TP_A : OUT STD_LOGIC_VECTOR(11 downto 0) -- testpoints ); end component; --Inputs signal ext_clk : STD_LOGIC := '0'; signal brd_add : STD_LOGIC_VECTOR(5 downto 0) := (others => '0'); --signal brd_id : STD_LOGIC_VECTOR(7 downto 0) := (others => '0'); signal patch_A_p : STD_LOGIC := '0'; signal patch_A_n : STD_LOGIC := '0'; signal patch_B_p : STD_LOGIC := '0'; signal patch_B_n : STD_LOGIC := '0'; signal patch_C_p : STD_LOGIC := '0'; signal patch_C_n : STD_LOGIC := '0'; signal patch_D_p : STD_LOGIC := '0'; signal patch_D_n : STD_LOGIC := '0'; signal trig_prim_p : STD_LOGIC := '0'; signal trig_prim_n : STD_LOGIC := '0'; signal rx : STD_LOGIC := '1'; --Outputs signal enables_A : STD_LOGIC_VECTOR(8 downto 0); signal enables_B : STD_LOGIC_VECTOR(8 downto 0); signal enables_C : STD_LOGIC_VECTOR(8 downto 0); signal enables_D : STD_LOGIC_VECTOR(8 downto 0); signal clr : STD_LOGIC; signal cs_ld : STD_LOGIC; signal sck : STD_LOGIC; signal mosi : STD_LOGIC; signal tx : STD_LOGIC; signal rx_en : STD_LOGIC; signal tx_en : STD_LOGIC; signal TP_A : STD_LOGIC_VECTOR(11 downto 0); --single-ended trigger signals signal patch_A_sig : STD_LOGIC := '0'; signal patch_B_sig : STD_LOGIC := '0'; signal patch_C_sig : STD_LOGIC := '0'; signal patch_D_sig : STD_LOGIC := '0'; signal trigger_sig : STD_LOGIC := '0'; -- Clock period definitions constant ext_clk_period : TIME := 20 ns; constant baud_rate_period : TIME := 4 us; begin -- Instantiate the Unit Under Test (UUT) uut: FTU_top port map( ext_clk => ext_clk, brd_add => brd_add, --brd_id => brd_id, patch_A_p => patch_A_p, patch_A_n => patch_A_n, patch_B_p => patch_B_p, patch_B_n => patch_B_n, patch_C_p => patch_C_p, patch_C_n => patch_C_n, patch_D_p => patch_D_p, patch_D_n => patch_D_n, trig_prim_p => trig_prim_p, trig_prim_n => trig_prim_n, rx => rx, rx_en => rx_en, enables_A => enables_A, enables_B => enables_B, enables_C => enables_C, enables_D => enables_D, clr => clr, cs_ld => cs_ld, sck => sck, mosi => mosi, tx => tx, tx_en => tx_en, TP_A => TP_A ); --differential output buffer for patch A OBUFDS_LVDS_33_A : OBUFDS_LVDS_33 port map( O => patch_A_p, OB => patch_A_n, I => patch_A_sig ); OBUFDS_LVDS_33_B : OBUFDS_LVDS_33 port map( O => patch_B_p, OB => patch_B_n, I => patch_B_sig ); OBUFDS_LVDS_33_C : OBUFDS_LVDS_33 port map( O => patch_C_p, OB => patch_C_n, I => patch_C_sig ); OBUFDS_LVDS_33_D : OBUFDS_LVDS_33 port map( O => patch_D_p, OB => patch_D_n, I => patch_D_sig ); OBUFDS_LVDS_33_t : OBUFDS_LVDS_33 port map( O => trig_prim_p, OB => trig_prim_n, I => trigger_sig ); -- Stimulus process for clock ext_clk_proc: process begin ext_clk <= '0'; wait for ext_clk_period/2; ext_clk <= '1'; wait for ext_clk_period/2; end process ext_clk_proc; -- Stimulus process for trigger trigger_proc: process begin --------------------------------------------------------------------------- -- FTU not yet initialized --------------------------------------------------------------------------- wait for 10us; trigger_sig <= '1'; wait for 5ns; trigger_sig <= '0'; wait for 99us; trigger_sig <= '1'; wait for 5ns; trigger_sig <= '0'; wait for 1us; trigger_sig <= '1'; wait for 5ns; trigger_sig <= '0'; --------------------------------------------------------------------------- -- now FTU is initialized --------------------------------------------------------------------------- wait for 4us; trigger_sig <= '1'; wait for 5ns; trigger_sig <= '0'; wait for 4us; trigger_sig <= '1'; wait for 5ns; trigger_sig <= '0'; wait for 22us; trigger_sig <= '1'; wait for 5ns; trigger_sig <= '0'; wait for 1430us; trigger_sig <= '1'; wait for 5ns; trigger_sig <= '0'; wait for 400us; trigger_sig <= '1'; wait for 5ns; trigger_sig <= '0'; wait; end process trigger_proc; -- Stimulus process for RS485 rs485_proc: process procedure assign_rs485 (data: std_logic_vector(7 downto 0)) is begin rx <= '0'; --start bit wait for baud_rate_period; rx <= data(0); --bit 0 wait for baud_rate_period; rx <= data(1); --bit 1 wait for baud_rate_period; rx <= data(2); --bit 2 wait for baud_rate_period; rx <= data(3); --bit 3 wait for baud_rate_period; rx <= data(4); --bit 4 wait for baud_rate_period; rx <= data(5); --bit 5 wait for baud_rate_period; rx <= data(6); --bit 6 wait for baud_rate_period; rx <= data(7); --bit 7 wait for baud_rate_period; rx <= '1'; --stop bit wait for baud_rate_period; rx <= '1'; --stop bit wait for baud_rate_period; end assign_rs485; begin --------------------------------------------------------------------------- -- wait until FTU is initialized --------------------------------------------------------------------------- wait for 150us; --------------------------------------------------------------------------- -- test one RS485 command (28 byte) --------------------------------------------------------------------------- assign_rs485("01000000"); --start delimiter wait for 0us; assign_rs485("00000000"); --FTU address wait for 0ns; assign_rs485("11000000"); --FTM address wait for 0ns; assign_rs485("00000001"); --FTM firmware ID wait for 0ns; assign_rs485("00000010"); --instruction wait for 0us; assign_rs485("00000001"); --data byte 01 wait for 0ns; assign_rs485("00000000"); --data byte 02 wait for 0ns; assign_rs485("00000010"); --data byte 03 wait for 0ns; assign_rs485("00000000"); --data byte 04 wait for 0ns; assign_rs485("00000100"); --data byte 05 wait for 0ns; assign_rs485("00000000"); --data byte 06 wait for 0ns; assign_rs485("00001000"); --data byte 07 wait for 0ns; assign_rs485("00000000"); --data byte 08 wait for 0ns; assign_rs485("00010000"); --data byte 09 wait for 0ns; assign_rs485("00000000"); --data byte 10 wait for 0ns; assign_rs485("00000000"); --data byte 11 wait for 0ns; assign_rs485("00000000"); --data byte 12 wait for 0ns; assign_rs485("00000001"); --data byte 13 wait for 0ns; assign_rs485("00000000"); --data byte 14 wait for 0ns; assign_rs485("00000010"); --data byte 15 wait for 0ns; assign_rs485("00000000"); --data byte 16 wait for 0ns; assign_rs485("00000100"); --data byte 17 wait for 0ns; assign_rs485("00000000"); --data byte 18 wait for 0ns; assign_rs485("00001000"); --data byte 19 wait for 0ns; assign_rs485("00000000"); --data byte 20 wait for 0ns; assign_rs485("00010000"); --data byte 21 wait for 0ns; assign_rs485("00000000"); --CRC error counter (not used) wait for 0ns; assign_rs485("00000000"); --check sum --------------------------------------------------------------------------- -- wait enough time and send another command --------------------------------------------------------------------------- wait for 1500us; assign_rs485("01000000"); --start delimiter wait for 0us; assign_rs485("00000000"); --FTU address wait for 0ns; assign_rs485("11000000"); --FTM address wait for 0ns; assign_rs485("00000001"); --FTM firmware ID wait for 0ns; assign_rs485("00000101"); --instruction wait for 0us; assign_rs485("00000001"); --data byte 01 wait for 0ns; assign_rs485("00000000"); --data byte 02 wait for 0ns; assign_rs485("00000010"); --data byte 03 wait for 0ns; assign_rs485("00000000"); --data byte 04 wait for 0ns; assign_rs485("00000100"); --data byte 05 wait for 0ns; assign_rs485("00000000"); --data byte 06 wait for 0ns; assign_rs485("00001000"); --data byte 07 wait for 0ns; assign_rs485("00000000"); --data byte 08 wait for 0ns; assign_rs485("00010000"); --data byte 09 wait for 0ns; assign_rs485("00000000"); --data byte 10 wait for 0ns; assign_rs485("00000000"); --data byte 11 wait for 0ns; assign_rs485("00000000"); --data byte 12 wait for 0ns; assign_rs485("00000001"); --data byte 13 wait for 0ns; assign_rs485("00000000"); --data byte 14 wait for 0ns; assign_rs485("00000010"); --data byte 15 wait for 0ns; assign_rs485("00000000"); --data byte 16 wait for 0ns; assign_rs485("00000100"); --data byte 17 wait for 0ns; assign_rs485("00000000"); --data byte 18 wait for 0ns; assign_rs485("00001000"); --data byte 19 wait for 0ns; assign_rs485("00000000"); --data byte 20 wait for 0ns; assign_rs485("00010000"); --data byte 21 wait for 0ns; assign_rs485("00000000"); --CRC error counter (not used) wait for 0ns; assign_rs485("00000000"); --check sum --------------------------------------------------------------------------- -- don't forget final wait! --------------------------------------------------------------------------- wait; end process rs485_proc; end;