I was able to get a little farther with using import pmt in the Import
block. I am now having some new difficulty with the Extra Dict field in
the File Meta Sink block.I'd like to add a few definitions to the Extra
Dictionary.
If I use:
pmt.dict_add(pmt.make_dict(),pmt.intern('FFT_size'),pmt.from_long(FFT_size))
to add in the FFT_size, that will run without error. However, I'm not
sure how to add another entry.
If I try adding another entry,
pmt.dict_add(pmt.make_dict(),pmt.intern('FFT_size'),pmt.from_long(FFT_size)),
pmt.dict_add(pmt.make_dict(),pmt.intern('freq'),pmt.from_long(freq))
I get an error about incompatible constructor arguments:
in __init__
self.blocks_file_meta_sink_0 =
blocks.file_meta_sink(gr.sizeof_float*FFT_size, 'output.dat', samp_rate, 1,
blocks.GR_FILE_FLOAT, False, 100,
pmt.dict_add(pmt.make_dict(),pmt.intern('FFT_size'),pmt.from_long(FFT_size)),pmt.dict_add(pmt.make_dict(),pmt.intern('freq'),pmt.from_long(freq)),
False)
TypeError: __init__(): incompatible constructor arguments. The following
argument types are supported:
1. gnuradio.blocks.blocks_python.file_meta_sink(itemsize: int,
filename: str, samp_rate: float = 1, relative_rate: float = 1, type:
gnuradio.blocks.blocks_python.gr_file_types = , complex: bool = True, max_segment_size: int = 100, extra_dict:
pmt.pmt_python.pmt_base = (), detached_header: bool = False)
Invoked with: 4096, 'output.dat', 1000, 1,
, False, 100, ((FFT_size . 1024)),
((freq . 10570)), False
If I try the entry this way:
pmt.dict_add(pmt.make_dict(),pmt.intern('FFT_size','freq'),pmt.from_long(FFT_size,freq))
I get an error in the block:
Param - Extra Dict.(extra_dict):
Value
"pmt.dict_add(pmt.make_dict(),pmt.intern('FFT_size','freq'),pmt.from_long(FFT_size,freq))"
cannot be evaluated:
intern(): incompatible function arguments. The following argument types are
supported:
1. (s: str) -> pmt.pmt_python.pmt_base
I'm not sure how to add multiple entries to the dictionary, or if it's
possible to do so.Thanks for any assistance!
Invoked with: 'FFT_size', 'freq'
On Sun, Mar 12, 2023 at 5:54 PM Hassel, George wrote:
> I'm still having some trouble with this issue.If I try to add a File
> Meta Sink block, I get an error involving pmt.make_dict() that indicates
> that pmt is not defined:
> [image: image.png]
> [image: image.png]
>
>
> If I try to add an import block, I can't change the case of "Import", and
> get an error message as shown
> [image: image.png]
>
>
> [image: image.png]
>
> I'm having trouble finding any documentation to help with this.
>
> Thanks!
> -George
>
>
> On Thu, Mar 9, 2023 at 11:06 AM Hassel, George wrote:
>
>> Hello,
>>
>> I'm having some difficulty with saving metadata. I'm trying to use File
>> Meta Sink as a block in gnuradio companion, and I get an error message in
>> the Extra Dict. filed that "Value "pmt.make_dict()" cannot be evaluated:
>> name 'pmt' is not defined.I try to add in an Import block that says
>> Import pmt, and get an error that says "Param - Import(imports): Bad import
>> syntax: "pmt".
>>
>> If I instead just use a python script with import pmt, I still get errors
>> involving the File Meta Sink blocks.
>>
>> I tried to make sure that pmt was installed with pip3 install pmt, but
>> that causes an error with finding the paths for gnuradio. I resolved that
>> by following the instructions at
>> https://wiki.gnuradio.org/index.php/ModuleNotFoundError, but again come
>> back to the same errors involving pmt.
>>
>> My Ubuntu version is 22.10
>> My gnuradio version is 3.10.3.0
>> My python3 version is 3.10.7
>>
>> Thanks for any assistance you can provide!
>>
>> -George Hassel
>>
>
