Matlab Processes Data and Writes to txt File#
%% Txt Generate
pre_RS_data=dec2bin(simDataIn,8); % Convert data to 8-bit binary
fid=fopen("F:\FPGA\Xilinx_vivado\project\dvbstestbench\dbvs\matlab\pre_RS_data.txt","wt");
for i=1:n*nMessages % Data length
fprintf(fid,"%s\n",pre_RS_data(i,1:8)); % Since binary data is 8 bits, it is 1:8
end
fclose(fid);
Use the fopen function to get the file id, the syntax of fopen is as follows
Where permission is the file access type, and there are the following permissions
'r' | Open the file for reading. |
|---|---|
'w' | Open or create a new file for writing. Discard existing content (if any). |
'a' | Open or create a new file for writing. Append data to the end of the file. |
'r+' | Open the file for reading and writing. |
'w+' | Open or create a new file for reading and writing. Discard existing content (if any). |
'a+' | Open or create a new file for reading and writing. Append data to the end of the file. |
'A' | Open the file to append (but do not automatically flush) the current output buffer. |
'W' | Open the file for writing (but do not automatically flush) the current output buffer. |
💡 To open in text mode, append 't'
Testbench Writing in Vivado#
`timescale 1ns/1ps
module top_tb();
reg clk;
reg rst_n;
reg [7:0]SEQ_IN_0;
reg [7:0] data_mem[1:1020];
reg [31:0] i;
wire BIN_OUT;
wire ce_out;
wire locked;
// clk & rst_n generation
initial begin
clk=1'b0;
rst_n=1'b0;
#100
rst_n=1'b1;
end
always #5 clk=~clk;
// data read
initial begin
$readmemb("F:/FPGA/Xilinx_vivado/project/dvbstestbench/dbvs/matlab/pre_RS_data.txt",data_mem);
end
initial begin
i=1;
forever @(posedge clk) begin
if(i<1020) begin
i=i+1;
end
else
i=1;
end
$display("%s",data_mem[i]);
end
always @(posedge clk) begin
SEQ_IN_0<=data_mem[i];
end
top_wrapper top_wrapper_u0(
.clk_0 (clk),
.rst_n_0 (rst_n),
.SEQ_IN_0(SEQ_IN_0),
.BIN_OUT_0 (BIN_OUT),
.ce_out_0 (ce_out),
.locked_0 (locked)
);
endmodule
💡 The file path copied directly within the folder uses , but in the testbench, all backslashes must be changed to /, otherwise the txt file cannot be read.