Re: [Discuss-gnuradio] Decoding UDP socket output

[Josh Blum]

On 06/13/2013 01:23 PM, Adriana Arteaga wrote:
> Hi!
> I'm using an udp_sink block to send the power values (float) to an common udp 
> socket writing with python
> 
> data, addr = sock.recvfrom(2048)
> 
> but the outup was:
> 
> �����ˆ�„׬��ٶ��e�¹�¢���\d�Ÿ5�˜S���8�®Z��xS�����A��‡™��T�
> 
> I found "data = sock.recv(1).decode('utf-8')" function, but the output was:
> 
> received message: ׬
> Traceback (most recent call last):
>   File "udp_connection.py", line 12, in <module>
>     data = sock.recv(1).decode('utf-8')
>   File "/usr/lib/python2.7/encodings/utf_8.py", line 16, in decode
>     return codecs.utf_8_decode(input, errors, True)
> UnicodeDecodeError: 'utf8' codec can't decode byte 0xf9 in position 0: 
> invalid start byte
> 
> I'm try changing "utf-8" for "utf8" and the result is the same. Anyone knows 
> how can I decode the output?
> 

If the bytestream is encoded as floats (if I have understood correctly),
why would you decode it as utf8?

Try numpy.fromstring(your_data, numpy.float32) to get a nice array
object in python from such a string.

-josh

> Thanks.
> 
> Adriana
> 
> 
>                                         
> 
> 
> 
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