ivan-igorevich
/
fpga-lab-2
0
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

wip lab4, tested module

This commit is contained in:
Ivan I. Ovchinnikov 2023-01-27 17:06:29 +03:00
parent 3b13bb1166
commit 22f16bc090
6 changed files with 228 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
HDL/sdmod.sv Normal file
View File

@ -0,0 +1,23 @@
module sdmod (
input signed [7:0] val,
input clk,
input reset,
output daco
);
logic out;
logic signed [7:0] eps;
logic signed [7:0] un;
always_ff @(posedge clk, negedge reset) begin
if (~reset) begin
un <= 8'd0;
end else begin
un <= val - eps;
end
end
assign daco = (un >= $signed(8'd0)) ? 1'd1 : 1'd0;
assign eps = (un >= $signed(8'd0)) ? $signed(8'd126) - un : $signed(-8'd126) - un;
endmodule

16
HDL/sigdel.sv
View File

@ -11,6 +11,19 @@ module sigdel
output logic fout
);
logic [7:0] phinc_val, phase, sine;
//control slave logic
always_ff @ (posedge clk or negedge clr_n) begin
if (!clr_n) begin
phinc_val[7:0] <= 8'd0;
end else begin
if (!wr_n) begin
phinc_val[7:0] <= wr_data[31:0];
end
end
end
phacc phacc_inst (.phinc(phinc_val), .clk(clk), .reset(clr_n), .phase(phase));
defparam phacc_inst.WIDTH = PHACC_WIDTH;
@ -18,4 +31,7 @@ module sigdel
.address (phase), .clock (clk), .q(sine)
);
sdmod sdmod_inst (
.val(sine), .clk(clk), .reset(clr_n), .daco(fout)
);
endmodule

55
Testbench/sigdel/lut_mod_tb.sv Normal file
View File

@ -0,0 +1,55 @@
`timescale 1 ns/1 ns
module lut_mod_tb();
// Parameters
localparam CLK_PRD = 20;
localparam PHACC_WIDTH = 14;
logic clk, clr_n, wr_n, daco;
logic [7:0] phinc_val, phase, sine;
// Instantiate UUT and connect used ports
phacc phacc (
.phinc(phinc_val), .clk(clk), .reset(clr_n), .phase(phase)
);
defparam phacc.WIDTH = PHACC_WIDTH;
sinelut sinelut_inst (
.address(phase), .clock(clk), .q(sine)
);
sdmod sdmod_inst (
.val(sine), .clk(clk), .reset(clr_n), .daco(daco)
// .val(8'd0), .clk(clk), .reset(clr_n), .daco(daco)
// .val(8'd255), .clk(clk), .reset(clr_n), .daco(daco)
);
// Clock definition
initial begin
clk = 0;
forever #(CLK_PRD/2) clk = ~clk;
end
// Reset and initial values definition
initial begin
clr_n = 0;
#(CLK_PRD*5) clr_n = 1;
end
// Bus write transaction simulation
initial begin
// Wait until system is out of reset
@(posedge clr_n);
phinc_val=(2**(PHACC_WIDTH - 8));
if ((phinc_val <= 255) && (phinc_val != 0)) begin
#(CLK_PRD * 256 * 10) $stop;
end else begin
$display("Error: value of phase increment is out of range! Stopped simulation.");
#1 $stop;
end
end
endmodule

19
Testbench/sigdel/sigdel.qsf
View File

@ -50,19 +50,28 @@ set_global_assignment -name NOMINAL_CORE_SUPPLY_VOLTAGE 1.2V
set_global_assignment -name EDA_SIMULATION_TOOL "ModelSim-Altera (SystemVerilog)"
set_global_assignment -name EDA_TIME_SCALE "1 ps" -section_id eda_simulation
set_global_assignment -name EDA_OUTPUT_DATA_FORMAT "SYSTEMVERILOG HDL" -section_id eda_simulation
set_global_assignment -name SYSTEMVERILOG_FILE ../../HDL/phacc.sv
set_global_assignment -name POWER_PRESET_COOLING_SOLUTION "23 MM HEAT SINK WITH 200 LFPM AIRFLOW"
set_global_assignment -name POWER_BOARD_THERMAL_MODEL "NONE (CONSERVATIVE)"
set_global_assignment -name QIP_FILE ../../HDL/IP/sinelut.qip
set_global_assignment -name SYSTEMVERILOG_FILE ../../HDL/sigdel.sv
set_global_assignment -name SYSTEMVERILOG_FILE inc_lut_tb.sv
set_global_assignment -name PARTITION_NETLIST_TYPE SOURCE -section_id Top
set_global_assignment -name PARTITION_FITTER_PRESERVATION_LEVEL PLACEMENT_AND_ROUTING -section_id Top
set_global_assignment -name PARTITION_COLOR 16764057 -section_id Top
set_global_assignment -name EDA_TEST_BENCH_ENABLE_STATUS TEST_BENCH_MODE -section_id eda_simulation
set_global_assignment -name EDA_NATIVELINK_SIMULATION_TEST_BENCH inc_lut_tb -section_id eda_simulation
set_global_assignment -name EDA_NATIVELINK_SIMULATION_TEST_BENCH sigdel_tb -section_id eda_simulation
set_global_assignment -name EDA_TEST_BENCH_NAME inc_lut_tb -section_id eda_simulation
set_global_assignment -name EDA_DESIGN_INSTANCE_NAME NA -section_id inc_lut_tb
set_global_assignment -name EDA_TEST_BENCH_MODULE_NAME inc_lut_tb -section_id inc_lut_tb
set_global_assignment -name EDA_TEST_BENCH_NAME lut_mod_tb -section_id eda_simulation
set_global_assignment -name EDA_DESIGN_INSTANCE_NAME NA -section_id lut_mod_tb
set_global_assignment -name EDA_TEST_BENCH_MODULE_NAME lut_mod_tb -section_id lut_mod_tb
set_global_assignment -name SYSTEMVERILOG_FILE ../../HDL/phacc.sv
set_global_assignment -name QIP_FILE ../../HDL/IP/sinelut.qip
set_global_assignment -name SYSTEMVERILOG_FILE ../../HDL/sigdel.sv
set_global_assignment -name SYSTEMVERILOG_FILE ../../HDL/sdmod.sv
set_global_assignment -name EDA_NATIVELINK_SIMULATION_SETUP_SCRIPT simulation/modelsim/wave.do -section_id eda_simulation
set_global_assignment -name EDA_TEST_BENCH_FILE inc_lut_tb.sv -section_id inc_lut_tb
set_global_assignment -name EDA_TEST_BENCH_FILE lut_mod_tb.sv -section_id lut_mod_tb
set_global_assignment -name EDA_TEST_BENCH_NAME sigdel_tb -section_id eda_simulation
set_global_assignment -name EDA_DESIGN_INSTANCE_NAME NA -section_id sigdel_tb
set_global_assignment -name EDA_TEST_BENCH_MODULE_NAME sigdel_tb -section_id sigdel_tb
set_global_assignment -name EDA_TEST_BENCH_FILE sigdel_tb.sv -section_id sigdel_tb
set_instance_assignment -name PARTITION_HIERARCHY root_partition -to | -section_id Top

37
Testbench/sigdel/sigdel.sv Normal file
View File

@ -0,0 +1,37 @@
//top-level module
module sigdel
#(
PHACC_WIDTH = 14
) (
//clock and reset
input logic clk, clr_n,
//control slave
input logic [31:0] wr_data,
input logic wr_n,
output logic fout
);
logic [7:0] phinc_val;
//control slave logic
always_ff @ (posedge clk or negedge clr_n) begin
if (!clr_n) begin
phinc_val[7:0] <= 8'd0;
end else begin
if (!wr_n) begin
phinc_val[7:0] <= wr_data[31:0];
end
end
end
phacc phacc_inst (.phinc(phinc_val), .clk(clk), .reset(clr_n), .phase(phase));
defparam phacc_inst.WIDTH = PHACC_WIDTH;
sinelut sinelut_inst (
.address (phase), .clock (clk), .q(sine)
);
sdmod sdmod_inst (
.val(sine), .clk(clk), .reset(clr_n), .daco(fout)
);
endmodule

81
Testbench/sigdel/sigdel_tb.sv Normal file
View File

@ -0,0 +1,81 @@
`timescale 1 ns/1 ns
module sigdel_tb();
// Parameters
localparam CLK_PRD = 20;
localparam SAMPLES_PRD = 256;
localparam OVERSAMPLING = 4;
localparam PHACC_WIDTH = 14;
// Wires and variables to connect to UUT (unit under test)
logic clk, clr_n, wr_n;
logic [31:0] wr_data;
logic [31:0] phinc_val;
logic fout;
// Instantiate UUT and connect used ports
sigdel dut(.clk(clk), .clr_n(clr_n), .wr_n(wr_n), .wr_data(wr_data), .fout(fout));
defparam dut.PHACC_WIDTH = PHACC_WIDTH;
// Clock definition
initial begin
clk = 0;
forever #(CLK_PRD/2) clk = ~clk;
end
// Reset and initial values definition
initial begin
clr_n = 0;
wr_n = 1;
wr_data = 'bx;
#(CLK_PRD*5) clr_n = 1;
end
// Bus write transaction simulation
initial begin
// Wait until system is out of reset
@(posedge clr_n);
// Check if phase increment for required accumulator width
// and oversamlpling ratio will fit in 8 bits
phinc_val=(2**(PHACC_WIDTH-8))/OVERSAMPLING;
if ((phinc_val <= 255) && (phinc_val != 0))
begin
// Write phase increment several clock cycles after reset
#(CLK_PRD*3) write_transaction(phinc_val);
// Wait for one sine period (for 14-bit phase accumulator case)
#(CLK_PRD*SAMPLES_PRD*OVERSAMPLING)
#(CLK_PRD*3) write_transaction(phinc_val*5);
#(CLK_PRD*SAMPLES_PRD*OVERSAMPLING)
$stop;
end
else
begin
//Output simulation error
$display("Error: value of phase increment is out of range! Stopped simulation.");
//Stop simulation (small delay needed for $display to work)
#1 $stop;
end
end
//Single write transaction task
task write_transaction;
//input signals
input [31:0] val;
//transaction implementation
begin
@(posedge clk);
//assert signals for one clock cycle
wr_n = 0;
wr_data = val;
@(posedge clk);
//deassert signals
wr_n = 1;
wr_data = 'bx;
end
endtask
endmodule