About file I/O

[GaLaKtIkUs™]

Hi all,
Is it possible to define some parameter to some integer value than
convert it to a string to use it as a part of a filename to open it?
I tried the following but it doesn't work
parameter suffix=13;
parameter filen_ame={"some_name",suffix};

Cheers

 

[gabor]

GaLaKtIkUs™ wrote:

Hi all,
Is it possible to define some parameter to some integer value than
convert it to a string to use it as a part of a filename to open it?
I tried the following but it doesn't work
parameter suffix=13;
parameter filen_ame={"some_name",suffix};

Cheers

This worked in ModelSim:

parameter suffix = 8'h25;
integer stupid_file;
reg [31:0] file_name;
reg [7:0] file_number;
initial begin
file_number = suffix;
file_name = {"FN",4'h3,file_number[7:4],4'h3,file_number[3:0]};
$display ("%x %s", file_name, file_name);
stupid_file = $fopen (file_name);
if (stupid_file != 0) $fclose(stupid_file);
end

Note the simplistic number (BCD hex) to ASCII by just inserting
4'b3 in front of each hex digit. This generated a file called FN25
in the current directory.

Regards,
Gabor

 

[Stephen Williams]

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GaLaKtIkUs? wrote:

Hi all,
Is it possible to define some parameter to some integer value than
convert it to a string to use it as a part of a filename to open it?
I tried the following but it doesn't work
parameter suffix=13;
parameter filen_ame={"some_name",suffix};

$sprintf may be of some use?

- --
Steve Williams "The woods are lovely, dark and deep.
steve at icarus.com But I have promises to keep,
http://www.icarus.com and lines to code before I sleep,
http://www.picturel.com And lines to code before I sleep."
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[Chris Briggs]

Stephen Williams wrote:

$sprintf may be of some use?

Or $sformat.

-cb

 

[Serge Bédikian]

"GaLaKtIkUsT" <taileb.mehdi@gmail.com> a écrit dans le message de news:
1158149110.713988.55780@i3g2000cwc.googlegroups.com...

Hi all,
Is it possible to define some parameter to some integer value than
convert it to a string to use it as a part of a filename to open it?
I tried the following but it doesn't work
parameter suffix=13;
parameter filen_ame={"some_name",suffix};

Cheers

Here is what you want:

module str;

parameter n=125;
reg [8*32-1:0] file_name;
integer f;

initial begin
$sformat(file_name,"TOTO%0d",n);
f=$fopen(file_name);
$fclose(f);
end

endmodule

Serge Bedikian