Re: [Discuss-gnuradio] missing length tag

[Marcus Müller]

It means exactly that:
Your sample stream is missing a tag called "tsb_tag". Are you sure you're placing these tags on the stream? And the next tag comes exactly n_samples after the last tag, n_samples being the value stored in the last tag?

To debug this, I'd recommend placing a "tag debug" block in parallel to your USRP sink.

Best regards,
Marcus

On 09/24/2015 06:11 PM, cdl wrote:

hello
i write a grc,i use the virtual sink and virtual source,the grc woked well
when i replace the virtual sin and source with usrp sink and source,there is a problem occured
the message is:

gr::log :FATAL: repack_bits_bb0 - Missing a required length tag on port 0 at item #0

thread[thread-per-block[10]: <block repack_bits_bb (10)>]: Missing length tag.

i have set the block (repack bits)'s parameter length tag key  == "tsb_tag",
but what this message "missing length tag" mean,
thank you

这个十一，“邮”我们，请尽情享受在路上的心情。-马上装备网易邮箱大师

_______________________________________________
Discuss-gnuradio mailing list
address@hidden
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio