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Add moving average filter testbench and configuration files; refactor signal handling in filter components

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This commit is contained in:
Davide Cavagnola
2025-05-23 12:49:46 +02:00
parent d3dd458825
commit 6cb0e4095e
5 changed files with 650 additions and 23 deletions
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142
LAB3/sim/tb_moving_average.vhd Normal file
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@@ -0,0 +1,142 @@
-- filepath: c:\DESD\LAB3\sim\tb_moving_average.vhd
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE ieee.numeric_std.ALL;
ENTITY tb_moving_average IS
END tb_moving_average;
ARCHITECTURE sim OF tb_moving_average IS
CONSTANT TDATA_WIDTH : INTEGER := 24;
CONSTANT FILTER_ORDER_PWR : INTEGER := 5;
SIGNAL aclk : STD_LOGIC := '0';
SIGNAL aresetn : STD_LOGIC := '0';
SIGNAL s_axis_tvalid : STD_LOGIC := '0';
SIGNAL s_axis_tdata : STD_LOGIC_VECTOR(TDATA_WIDTH-1 DOWNTO 0) := (OTHERS => '0');
SIGNAL s_axis_tlast : STD_LOGIC := '0';
SIGNAL s_axis_tready : STD_LOGIC;
SIGNAL m_axis_tvalid : STD_LOGIC;
SIGNAL m_axis_tdata : STD_LOGIC_VECTOR(TDATA_WIDTH-1 DOWNTO 0);
SIGNAL m_axis_tlast : STD_LOGIC;
SIGNAL m_axis_tready : STD_LOGIC := '1';
SIGNAL enable_filter : STD_LOGIC := '0';
-- DUT
COMPONENT moving_average_filter_en
GENERIC (
FILTER_ORDER_POWER : INTEGER := 5;
TDATA_WIDTH : POSITIVE := 24
);
PORT (
aclk : IN STD_LOGIC;
aresetn : IN STD_LOGIC;
s_axis_tvalid : IN STD_LOGIC;
s_axis_tdata : IN STD_LOGIC_VECTOR(TDATA_WIDTH-1 DOWNTO 0);
s_axis_tlast : IN STD_LOGIC;
s_axis_tready : OUT STD_LOGIC;
m_axis_tvalid : OUT STD_LOGIC;
m_axis_tdata : OUT STD_LOGIC_VECTOR(TDATA_WIDTH-1 DOWNTO 0);
m_axis_tlast : OUT STD_LOGIC;
m_axis_tready : IN STD_LOGIC;
enable_filter : IN STD_LOGIC
);
END COMPONENT;
BEGIN
-- Clock generation
clk_proc : PROCESS
BEGIN
aclk <= '0';
WAIT FOR 5 ns;
aclk <= '1';
WAIT FOR 5 ns;
END PROCESS;
-- DUT instantiation
dut: moving_average_filter_en
GENERIC MAP (
FILTER_ORDER_POWER => FILTER_ORDER_PWR,
TDATA_WIDTH => TDATA_WIDTH
)
PORT MAP (
aclk => aclk,
aresetn => aresetn,
s_axis_tvalid => s_axis_tvalid,
s_axis_tdata => s_axis_tdata,
s_axis_tlast => s_axis_tlast,
s_axis_tready => s_axis_tready,
m_axis_tvalid => m_axis_tvalid,
m_axis_tdata => m_axis_tdata,
m_axis_tlast => m_axis_tlast,
m_axis_tready => m_axis_tready,
enable_filter => enable_filter
);
-- Stimulus process
stim_proc : PROCESS
BEGIN
-- Reset
aresetn <= '0';
WAIT FOR 20 ns;
aresetn <= '1';
WAIT FOR 10 ns;
-- Test All Pass (enable_filter = '0')
enable_filter <= '0';
FOR i IN 0 TO 7 LOOP
-- SX sample
s_axis_tdata <= std_logic_vector(to_signed(i*100, TDATA_WIDTH));
s_axis_tvalid <= '1';
s_axis_tlast <= '0';
WAIT UNTIL rising_edge(aclk);
WHILE s_axis_tready /= '1' LOOP
WAIT UNTIL rising_edge(aclk);
END LOOP;
s_axis_tvalid <= '0';
-- DX sample (tlast high)
s_axis_tdata <= std_logic_vector(to_signed(i*100+50, TDATA_WIDTH));
s_axis_tvalid <= '1';
s_axis_tlast <= '1';
WAIT UNTIL rising_edge(aclk);
WHILE s_axis_tready /= '1' LOOP
WAIT UNTIL rising_edge(aclk);
END LOOP;
s_axis_tvalid <= '0';
END LOOP;
-- Test Moving Average (enable_filter = '1')
enable_filter <= '1';
FOR i IN 0 TO 7 LOOP
-- SX sample
s_axis_tdata <= std_logic_vector(to_signed(i*100, TDATA_WIDTH));
s_axis_tvalid <= '1';
s_axis_tlast <= '0';
WAIT UNTIL rising_edge(aclk);
WHILE s_axis_tready /= '1' LOOP
WAIT UNTIL rising_edge(aclk);
END LOOP;
s_axis_tvalid <= '0';
-- DX sample (tlast high)
s_axis_tdata <= std_logic_vector(to_signed(i*100+50, TDATA_WIDTH));
s_axis_tvalid <= '1';
s_axis_tlast <= '1';
WAIT UNTIL rising_edge(aclk);
WHILE s_axis_tready /= '1' LOOP
WAIT UNTIL rising_edge(aclk);
END LOOP;
s_axis_tvalid <= '0';
END LOOP;
-- End simulation
WAIT FOR 50 ns;
END PROCESS;
END sim;

17
LAB3/src/all_pass_filter.vhd
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@@ -24,7 +24,6 @@ END all_pass_filter;
ARCHITECTURE Behavioral OF all_pass_filter IS
SIGNAL s_axis_tready_int : STD_LOGIC := '0';
SIGNAL m_axis_tvalid_int : STD_LOGIC := '0';
BEGIN
@@ -33,17 +32,17 @@ BEGIN
-- of the moving_average_filter, but does not process or modify the samples.
-- It simply passes input data to the output unchanged, ensuring the same latency and interface behavior.
-- Output assignments
s_axis_tready <= s_axis_tready_int;
-- Assigning the output signals
m_axis_tvalid <= m_axis_tvalid_int;
s_axis_tready <= (m_axis_tready OR NOT m_axis_tvalid_int) AND aresetn;
PROCESS (aclk)
BEGIN
IF rising_edge(aclk) THEN
IF aresetn = '0' THEN
s_axis_tready_int <= '0';
m_axis_tvalid_int <= '0';
m_axis_tlast <= '0';
ELSE
-- Clear valid flag when master interface is ready
@@ -51,16 +50,12 @@ BEGIN
m_axis_tvalid_int <= '0';
END IF;
-- Hndle data transfer
IF s_axis_tvalid = '1' AND (m_axis_tvalid_int = '0' OR m_axis_tready = '1') THEN
s_axis_tready_int <= '1';
-- Handle data transfer
IF s_axis_tvalid = '1' AND m_axis_tready = '1' THEN
m_axis_tvalid_int <= '1';
m_axis_tdata <= s_axis_tdata;
m_axis_tlast <= s_axis_tlast;
ELSE
s_axis_tready_int <= '0';
END IF;
END IF;

22
LAB3/src/moving_average_filter.vhd
View File

@@ -41,14 +41,13 @@ ARCHITECTURE Behavioral OF moving_average_filter IS
SIGNAL sum_sx : signed(TDATA_WIDTH + FILTER_ORDER_POWER - 1 DOWNTO 0) := (OTHERS => '0');
SIGNAL wr_ptr_sx : INTEGER RANGE 0 TO FILTER_ORDER - 1 := 0;
SIGNAL s_axis_tready_int : STD_LOGIC := '0';
SIGNAL m_axis_tvalid_int : STD_LOGIC := '0';
BEGIN
-- Output assignments
-- Assigning the output signals
m_axis_tvalid <= m_axis_tvalid_int;
s_axis_tready <= s_axis_tready_int;
s_axis_tready <= (m_axis_tready OR NOT m_axis_tvalid_int) AND aresetn;
PROCESS (aclk)
BEGIN
@@ -57,14 +56,14 @@ BEGIN
IF aresetn = '0' THEN
samples_dx <= (OTHERS => (OTHERS => '0'));
samples_sx <= (OTHERS => (OTHERS => '0'));
sum_dx <= (OTHERS => '0');
sum_sx <= (OTHERS => '0');
wr_ptr_dx <= 0;
wr_ptr_sx <= 0;
s_axis_tready_int <= '0';
m_axis_tvalid_int <= '0';
m_axis_tlast <= '0';
m_axis_tdata <= (OTHERS => '0');
ELSE
-- Clear valid flag when master interface is ready
@@ -73,8 +72,10 @@ BEGIN
END IF;
-- Get and process data
IF s_axis_tvalid = '1' AND (m_axis_tvalid_int = '0' OR m_axis_tready = '1') THEN
IF s_axis_tlast = '1' THEN
IF s_axis_tvalid = '1' AND m_axis_tready = '1' THEN
IF s_axis_tlast = '1' THEN
-- Right channel
-- Circular buffer overwrite oldest saple with the new one from next clk cycle
samples_dx(wr_ptr_dx) <= signed(s_axis_tdata);
@@ -95,6 +96,7 @@ BEGIN
)
);
ELSE
-- Left channel
-- Circular buffer overwrite oldest saple with the new one from next clk cycle
samples_sx(wr_ptr_sx) <= signed(s_axis_tdata);
@@ -116,13 +118,9 @@ BEGIN
);
END IF;
s_axis_tready_int <= '1';
m_axis_tvalid_int <= '1';
m_axis_tlast <= s_axis_tlast;
ELSE
s_axis_tready_int <= '0';
END IF;
END IF;

406
LAB3/vivado/moving_average_filter/moving_average_filter.xpr Normal file
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@@ -0,0 +1,406 @@
<?xml version="1.0" encoding="UTF-8"?>
<!-- Product Version: Vivado v2020.2 (64-bit) -->
<!-- -->
<!-- Copyright 1986-2020 Xilinx, Inc. All Rights Reserved. -->
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<MsgAttr Name="NewSeverity" Val="INFO"/>
<MsgAttr Name="Id" Val="Synth 8-3331"/>
<MsgAttr Name="Severity" Val="ANY"/>
<MsgAttr Name="ShowRule" Val="1"/>
<MsgAttr Name="RuleSource" Val="2"/>
<MsgAttr Name="StringIsRegExp" Val="0"/>
<MsgAttr Name="RuleId" Val="8"/>
<MsgAttr Name="Note" Val=""/>
<MsgAttr Name="Author" Val=""/>
<MsgAttr Name="CreatedTimestamp" Val=""/>
</MsgRule>
<MsgRule>
<MsgAttr Name="RuleType" Val="1"/>
<MsgAttr Name="Limit" Val="-1"/>
<MsgAttr Name="NewSeverity" Val="WARNING"/>
<MsgAttr Name="Id" Val="Synth 8-2490"/>
<MsgAttr Name="Severity" Val="ANY"/>
<MsgAttr Name="ShowRule" Val="1"/>
<MsgAttr Name="RuleSource" Val="2"/>
<MsgAttr Name="StringIsRegExp" Val="0"/>
<MsgAttr Name="RuleId" Val="9"/>
<MsgAttr Name="Note" Val=""/>
<MsgAttr Name="Author" Val=""/>
<MsgAttr Name="CreatedTimestamp" Val=""/>
</MsgRule>
<Board>
<Jumpers/>
</Board>
<DashboardSummary Version="1" Minor="0">
<Dashboards>
<Dashboard Name="default_dashboard">
<Gadgets>
<Gadget Name="drc_1" Type="drc" Version="1" Row="2" Column="0">
<GadgetParam Name="REPORTS" Type="string_list" Value="impl_1#impl_1_route_report_drc_0 "/>
</Gadget>
<Gadget Name="methodology_1" Type="methodology" Version="1" Row="2" Column="1">
<GadgetParam Name="REPORTS" Type="string_list" Value="impl_1#impl_1_route_report_methodology_0 "/>
</Gadget>
<Gadget Name="power_1" Type="power" Version="1" Row="1" Column="0">
<GadgetParam Name="REPORTS" Type="string_list" Value="impl_1#impl_1_route_report_power_0 "/>
</Gadget>
<Gadget Name="timing_1" Type="timing" Version="1" Row="0" Column="1">
<GadgetParam Name="REPORTS" Type="string_list" Value="impl_1#impl_1_route_report_timing_summary_0 "/>
</Gadget>
<Gadget Name="utilization_1" Type="utilization" Version="1" Row="0" Column="0">
<GadgetParam Name="REPORTS" Type="string_list" Value="synth_1#synth_1_synth_report_utilization_0 "/>
<GadgetParam Name="RUN.STEP" Type="string" Value="synth_design"/>
<GadgetParam Name="RUN.TYPE" Type="string" Value="synthesis"/>
</Gadget>
<Gadget Name="utilization_2" Type="utilization" Version="1" Row="1" Column="1">
<GadgetParam Name="REPORTS" Type="string_list" Value="impl_1#impl_1_place_report_utilization_0 "/>
</Gadget>
</Gadgets>
</Dashboard>
<CurrentDashboard>default_dashboard</CurrentDashboard>
</Dashboards>
</DashboardSummary>
</Project>

86
LAB3/vivado/moving_average_filter/tb_moving_average_behav.wcfg Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<wave_config>
<wave_state>
</wave_state>
<db_ref_list>
<db_ref path="tb_moving_average_behav.wdb" id="1">
<top_modules>
<top_module name="tb_moving_average" />
</top_modules>
</db_ref>
</db_ref_list>
<zoom_setting>
<ZoomStartTime time="0fs"></ZoomStartTime>
<ZoomEndTime time="648001fs"></ZoomEndTime>
<Cursor1Time time="195000fs"></Cursor1Time>
</zoom_setting>
<column_width_setting>
<NameColumnWidth column_width="147"></NameColumnWidth>
<ValueColumnWidth column_width="93"></ValueColumnWidth>
</column_width_setting>
<WVObjectSize size="13" />
<wvobject fp_name="/tb_moving_average/aclk" type="logic">
<obj_property name="ElementShortName">aclk</obj_property>
<obj_property name="ObjectShortName">aclk</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/aresetn" type="logic">
<obj_property name="ElementShortName">aresetn</obj_property>
<obj_property name="ObjectShortName">aresetn</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/enable_filter" type="logic">
<obj_property name="ElementShortName">enable_filter</obj_property>
<obj_property name="ObjectShortName">enable_filter</obj_property>
<obj_property name="CustomSignalColor">#FF00FF</obj_property>
<obj_property name="UseCustomSignalColor">true</obj_property>
</wvobject>
<wvobject type="divider" fp_name="divider60">
<obj_property name="label">s_axis</obj_property>
<obj_property name="DisplayName">label</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/s_axis_tdata" type="array">
<obj_property name="ElementShortName">s_axis_tdata[23:0]</obj_property>
<obj_property name="ObjectShortName">s_axis_tdata[23:0]</obj_property>
<obj_property name="Radix">SIGNEDDECRADIX</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/s_axis_tlast" type="logic">
<obj_property name="ElementShortName">s_axis_tlast</obj_property>
<obj_property name="ObjectShortName">s_axis_tlast</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/s_axis_tvalid" type="logic">
<obj_property name="ElementShortName">s_axis_tvalid</obj_property>
<obj_property name="ObjectShortName">s_axis_tvalid</obj_property>
<obj_property name="CustomSignalColor">#00FFFF</obj_property>
<obj_property name="UseCustomSignalColor">true</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/s_axis_tready" type="logic">
<obj_property name="ElementShortName">s_axis_tready</obj_property>
<obj_property name="ObjectShortName">s_axis_tready</obj_property>
<obj_property name="CustomSignalColor">#FFD700</obj_property>
<obj_property name="UseCustomSignalColor">true</obj_property>
</wvobject>
<wvobject type="divider" fp_name="divider59">
<obj_property name="label">m_axis</obj_property>
<obj_property name="DisplayName">label</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/m_axis_tdata" type="array">
<obj_property name="ElementShortName">m_axis_tdata[23:0]</obj_property>
<obj_property name="ObjectShortName">m_axis_tdata[23:0]</obj_property>
<obj_property name="Radix">SIGNEDDECRADIX</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/m_axis_tlast" type="logic">
<obj_property name="ElementShortName">m_axis_tlast</obj_property>
<obj_property name="ObjectShortName">m_axis_tlast</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/m_axis_tvalid" type="logic">
<obj_property name="ElementShortName">m_axis_tvalid</obj_property>
<obj_property name="ObjectShortName">m_axis_tvalid</obj_property>
<obj_property name="CustomSignalColor">#00FFFF</obj_property>
<obj_property name="UseCustomSignalColor">true</obj_property>
</wvobject>
<wvobject fp_name="/tb_moving_average/m_axis_tready" type="logic">
<obj_property name="ElementShortName">m_axis_tready</obj_property>
<obj_property name="ObjectShortName">m_axis_tready</obj_property>
<obj_property name="CustomSignalColor">#FFD700</obj_property>
<obj_property name="UseCustomSignalColor">true</obj_property>
</wvobject>
</wave_config>