Before trying Veriloggen on Windows

wrap up

I tried to use the library Veriloggen that can write Verilog in Python with Windows + Visual Studio. Then there was an error related to the simulation, so I fixed it.

Try to use

Now that I'm free, I'll try using Veriloggen, which I've always been interested in. I also use Python for the first time.

Quickly install the VS Python extension for the time being I can't do anything without the support of the IDE because it's spacious.

Create a virtual environment on VS and install Veriloggen and dependent packages with pip

When I run the sample code

...
endmodule


C:\Users\*******\AppData\Local\Temp\tmp16lswu9y: Permission denied
No top level modules, and no -s option.
'.'Is an internal or external command,
It is not recognized as an operable program or batch file.

Ouf

Try to fix it

It seems that something is wrong with the simulation, so Take a look at Veriloggen's simulation.py.

First of all, Permission.

simulation.py


tmp = tempfile.NamedTemporaryFile()
tmp.write(code.encode(encode))
tmp.read()
filename = tmp.name

cmd.append(filename)

# synthesis
p = subprocess.Popen(' '.join(cmd), shell=True, stdout=subprocess.PIPE)

Because Permission says something like this Something is wrong with this temporary file.

After a lot of research, about tempfile.NamedTemporaryFile () I glance at something disturbing about the Windows environment. So, you can use mkstemp () (I'm not sure), so I'll try it. Reference

simulation.py


# tmp = tempfile.NamedTemporaryFile()
fd, path = tempfile.mkstemp()
os.close(fd)
tmp = open(path, "w+b")

tmp.write(code.encode(encode))
tmp.read()
filename = tmp.name

#Omission

# close temporal source code file
tmp.close()
os.remove(path)

For the time being, I didn't say anything about Permission.

Then this line

simulation.py


# simulation
p = subprocess.Popen('./' + outputfile, shell=True, stdout=subprocess.PIPE)

Rewrite ./ to . \\. that's all.

After executing so far, the simulation ran. Hooray

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