On Wed, May 14, 2014 at 4:26 PM, Martin Braun <martin.br...@ettus.com>wrote:
> On 14.05.2014 08:11, Activecat wrote:
>
>> Dear gurus,
>>
>> I am learning gnuradio Message Passing feature, but couldn't get
>> desirable result.
>> The Message seems published successfully, but not subscribed by the
>> Message receiver.
>> How to correct the error ..?
>>
>
> Just to make sure: You did connect the ports in your flow graph?
> That said, I've seen something like this recently. Maybe there's a bug...
> needs investigating.
> M
>
Both blocks (message sender block, message receiver block) are source
blocks, both are directly connected to the inputs of a divider blocks,
i.e. the message receiver block is not at the downstream of the message
sender block. I guess this is ok because Message Passing is for downstream
blocks to communicate to upstream blocks. Is this correct?
This is part of the top_block.py generated by GRC, to illustrate the
flowgraph.
##################################################
# Blocks
##################################################
self.blocks_head_0 = blocks.head(gr.sizeof_int*1, 10)
self.blocks_divide_xx_0 = blocks.divide_ii(1)
self.activecat_message_source1_0 = activecat.message_source1()
self.activecat_message_sink1_0 = activecat.message_sink1()
self.activecat_integer_sink3_0 = activecat.integer_sink3(False,
True, "Integer1")
##################################################
# Connections
##################################################
self.connect((self.blocks_divide_xx_0, 0), (self.blocks_head_0, 0))
self.connect((self.blocks_head_0, 0),
(self.activecat_integer_sink3_0, 0))
self.connect((self.activecat_message_source1_0, 0),
(self.blocks_divide_xx_0, 0))
self.connect((self.activecat_message_sink1_0, 0),
(self.blocks_divide_xx_0, 1))
System info:
Gnuradio version = 3.7.3
OS = Debian jessie/sid, SMP Debian 3.13.10-1 x86_64 GNU/Linux
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