Re: [Discuss-gnuradio] How to get from tag to message

[Gavin Jacobs]

Sorry if this shows up twice. I sent it on Saturday Sep-02, but it didn't show up in my digest nor in the archives. In fact there is a suspicious gap in the archives because there are NO messages for Sep-02.

Jake

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From: Gavin Jacobs
Sent: September 2, 2017 3:58 PM
To: address@hidden
Subject: How to get from tag to message

 

I am hoping for some advice on a flow graph. I am making a TNC using the KISS-over-TCP protocol (see attached).

It's mostly working, but I would like to implement a Carrier Sense mechanism as follows: If the radio is receiving anything (probably an  APRS message), then tell the Encode block to wait until the receiver is idle. As you can see, I have a Power Squelch block, and I can see the "squelch_sob" and "squelch_eob" tags via the Tag Debug block. The Encode block is my own work, so I could easily add a message-in port, but I don't know how to make those tags into messages. Is there a way to do it with stock blocks? or do I have write another OOT block?

Thanks,

Jake

aprs-tnc.grc.png
Description: aprs-tnc.grc.png