MCC_EXEC entity support for multiple axes control.

[fpga/pwm.git] / tb / tb_mcc_exec.vhd

diff --git a/tb/tb_mcc_exec.vhd b/tb/tb_mcc_exec.vhd
new file mode 100644 (file)
index 0000000..89bdb81
--- /dev/null
+++ b/tb/tb_mcc_exec.vhd
@@ -0,0 +1,106 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.std_logic_arith.all;
+use ieee.std_logic_unsigned.all;
+
+entity tb_mcc_exec is
+end tb_mcc_exec;
+
+--------------------------------------------------------------------------------
+
+architecture testbench of tb_mcc_exec is
+
+  constant period : time := 500 ns;
+  constant offset : time := 0 us;
+
+  signal CLK_I : std_logic;
+  signal RST_I : std_logic;
+
+  
+  signal MCC_AXIS_O : std_logic_vector (1 downto 0);
+  signal MCC_DONE_O : std_logic;
+  signal MCC_EXEC_I : std_logic;
+  signal MCC_ERR_O  : std_logic;
+  
+  signal MCC_ACK_I  : std_logic;
+  signal MCC_STB_O  : std_logic;
+  
+--------------------------------------------------------------------------------
+
+begin
+
+  uut : entity work.mcc_exec
+    generic map (
+      AXIS_CNT   => 3,
+      AXIS_CNT_W => 2)
+    port map (
+      CLK_I      => CLK_I,
+      RST_I      => RST_I,
+      MCC_AXIS_O => MCC_AXIS_O,
+      MCC_DONE_O => MCC_DONE_O,
+      MCC_EN_I   => '1',
+      MCC_EXEC_I => MCC_EXEC_I,
+      MCC_ERR_O  => MCC_ERR_O,
+      MCC_ACK_I  => MCC_ACK_I,
+      MCC_STB_O  => MCC_STB_O);
+
+  MCC_EMULATION : process is
+  begin
+    MCC_ACK_I  <= '0';
+    loop
+      wait until MCC_STB_O = '1';
+      wait for 4*period;
+      MCC_ACK_I <= '1';
+      wait until MCC_STB_O <= '0';
+      MCC_ACK_I <= '0';
+    end loop;
+  end process MCC_EMULATION;
+  
+  
+  SYSCON_CLK : process is
+  begin
+    CLK_I <= '0';
+    wait for offset;
+    loop
+      CLK_I <= '1';
+      wait for period/2;
+      CLK_I <= '0';
+      wait for period/2;
+    end loop;
+  end process;
+
+  SYSCON_RST : process is
+  begin
+    RST_I <= '0';
+    wait for offset;
+    wait for 0.75*period;
+    RST_I <= '1';
+    wait for 2*period;
+    RST_I <= '0';
+    wait;
+  end process;
+
+--------------------------------------------------------------------------------
+
+  UUT_FEED : process is
+  begin
+    MCC_EXEC_I <= '0';
+        
+    wait for offset;
+    wait for 4*period;
+
+    for i in 0 to 1 loop
+      wait for 0.25*period;
+      MCC_EXEC_I <= '1';
+      wait for period;
+      MCC_EXEC_I <= '0';
+
+      wait until MCC_DONE_O = '1';
+      wait for 8*period;
+    end loop;
+    
+    wait;
+  end process;
+  
+end testbench;
+