[Discuss-gnuradio] Python block, itemsize mismatch

[David Halls]

Hi,

I get the following error connecting 'OFDM Serializer' (GNU Radio block with complex output), to my own Python block 'blsd_dec_bfb' (with complex input)

"ValueError: itemsize mismatch: ofdm_serializer_vcc0:0 using 8, blsd_dec_bfb0:0 using 16"

This is the code in the beginning of my block

"class blsd_dec_bfb(gr.basic_block):
    """
    docstring for block blsd_dec_bfb
    """
    def __init__(self, num_packets=1, K=50, K2=20, kA1=4, NA1=8, num_carriers=64):
        gr.basic_block.__init__(self,
            name="blsd_dec_bfb",
            in_sig=[numpy.complex],
            out_sig=[numpy.uint8,numpy.uint8,numpy.uint8])"

the xml is

"... <sink>
    <name>in</name>
    <type>complex</type>
  </sink>
  <source>
    <name>bA1</name>
    <type>byte</type>
  </source>
  <source>
    <name>bA2</name>
    <type>byte</type>
  </source>
  <source>
    <name>b2</name>
    <type>byte</type>
  </source>..."

The colours match in the GRC, and it lets me run it (i.e. no complaints about type mismatch before run-time).

I hope it is just a silly mistake. Can anyone help?

Regards,

David

________________________________

NOTE: The information in this email and any attachments may be confidential and/or legally privileged. This message may be read, copied and used only by the intended recipient. If you are not the intended recipient, please destroy this message, delete any copies held on your system and notify the sender immediately.

Toshiba Research Europe Limited, registered in England and Wales (2519556). Registered Office 208 Cambridge Science Park, Milton Road, Cambridge CB4 0GZ, England. Web: www.toshiba.eu/research/trl

---

This email has been scanned for email related threats and delivered safely by Mimecast.
For more information please visit http://www.mimecast.com

---