[Discuss-gnuradio] Problem w. block Message Source

[Jose Rodriguez]

Hi,

I am a beginner at Gnuradio and I am working on writing some simple graphs. I am having a problem w. the block "Message Source".

I got the block "Message Strobe" connected to "Message Source" (the goal is to extract the data bytes and feed them to a "Packet Encoder" block).

The graph builds OK but when run I get:

Using Volk machine: avx_64_mmx_orc
Traceback (most recent call last):
  File "/home/joser/Desktop/xx/top_block.py", line 120, in <module>
    tb = top_block()
  File "/home/joser/Desktop/xx/top_block.py", line 72, in __init__
    self.blocks_message_source_0 = blocks.message_source(gr.sizeof_char*1, blocks_message_source_0_msgq_in)
NameError: global name 'blocks_message_source_0_msgq_in' is not defined

>>> Done

Any idea what the problem could be?

I checked: http://gnuradio.org/doc/doxygen/page_msg_passing.html and at the bottom is says to look at the examples in gr-blocks/examples/msg_passing but I get missing link errors when I load these files in my setup.

My setup is gnuradio 3.7.2.1 running in Ubuntu 12.04.4 LTS.

thanks for any help,

Jose Rodriguez

jose.rodriguez@invincea.com