[SOLVED] Read from a Text File, urgent help needed.

[andonie12]

Hello There,

In the current attached vhdl code: I am reading a text file "sim2.dat" which content is one column.

00000
00001
00010
00011

The question is how to read a text file "sim2.dat" which content is consists of two column instead of one column.

we data
00 00000
01 00001
10 00010
11 00011

I need the vhdl code for that if you know it. I included the complete design on how to read on column.

 

[radar08]

hello, you can use UltraEdit to select the expected column.

 

[bloodemon]

You can use bit_vector instead of string. Just invoke read for a line as many times as your data go.

If your data looks like
we data
00 0000
...

Then you add the following signal declaration in read_file.vhd

signal we : std_logic_vector( 1 downto 0);

And change the receive_data process with the following

==============================
receive_data: process

variable l: line;
--variable s: string(y'range);
variable swe: bit_vector(1 downto 0);
variable s: bit_vector(y'range);

begin

eog <= '0';

-- wait for reset to complete
wait until rst = '1';
wait until rst = '0';


while not endfile(stimulus) loop

-- read digital data from input file
readline(stimulus, l);
read(l, swe);
read(l, s);
--y <= to_std_logic_vector(s);
we <= to_stdlogicvector(swe);
y <= to_stdlogicvector(s);

wait until clk = '1';

end loop;

print("i@read_file: reached end of " & stim_file);
eog <= '1';

wait;

end process receive_data;
==================================