Re: [Discuss-gnuradio] how does Packet Header Generator module handle tags

[hutiantian]

Hi Marcus,
My tx_ofdm.py is gen by tx_ofdm.grc, there are a 
'packet_headergenerator_bb' module in it. This module use 
'set_tag_propagation_policy(TPP_DONT)' to handle tags by itself.
I didn't find any code has touch tags in this module, but when I connect 
it to Tag Debug module, I can find the tags output.
In my opinion, if one module use 'set_tag_propagation_policy(TPP_DONT)', 
and it does not handle it, tags will not pass down.

Thanks
Tiankun

于 2014年07月20日 21:15, Marcus Müller 写道:
> Hi Tiankun,
>
> what's your GNU Radio version [1]? Where did you find that tx_ofdm.py?
> There is no tx_ofdm.py in my GNU Radio source tree (in none of v3.7.4,
> v3.6.5 or v3.4.2). There is a tx_ofdm.grc, which can be used to generate
> a tx_ofdm.py, but that does not (and shouldn't) contain a
> "set_tag_propagation_policy" line.
>
> Greetings,
> Marcus
>
> [1] you can find out by running "gnuradio-config-info -v"
> On 20.07.2014 14:54, Tiankun Hu wrote:
> > Hi Experts,
> > I was reading tx_ofdm.py. I found this module use
> > 'set_tag_propagation_policy(TPP_DONT)' to handle tags by itself, but I
> > cann't find the code that used to handle tag in this module.
> > I knew this module will call 'packet_header_ofdm.header_formatter()' and
> > 'packet_header_default.header_formatter()', but I also cann't find the
> > handle tag code in these functions.
> > Anyone can help me figure out where does this module process tags?
> >
> > Thanks
> > Tiankun
> >
> >
> >
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>
>
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