Hi,
On 01/29/2015 03:13 PM, zs wrote:
Can you tell me,for general,in which circumstance,the packet header maybe
corrupt?
This is very hard to tell since I don't know what you are doing. I guess
you use a header_formatter in your flow graph and (for whatever reason)
its header_parse method returns false.
For example with the default header it looks like this happens if the
CRC is not correct
https://github.com/gnuradio/gnuradio/blob/master/gr-digital/lib/packet_header_default.cc#L132
At 2015-01-29 20:44:13, "Bastian Bloessl" <bloe...@ccs-labs.org> wrote:
Hi,
On 01/29/2015 01:03 PM, zs wrote:
Detected an invalid packet at item INFO: Parser returned #f".
The answer may be "RF settings are distorting your signal" or others.I
want to ask a question.Which block in gnuradio give us this hint.Where
is the source code of the block?And have someone can help me to explain
this problem more details?Why will have this error/warning?
~/src/gnuradio >> ack-grep -C 3 "an invalid packet"
gr-digital/lib/packet_headerparser_b_impl.cc
80- );
81-
82- if (!d_header_formatter->header_parser(in, tags)) {
83: GR_LOG_INFO(d_logger, boost::format("Detected an invalid packet at
item %1%") % nitems_read(0));
84- message_port_pub(msg_port_id, pmt::PMT_F);
85- } else {
86- pmt::pmt_t dict(pmt::make_dict());
I guess your packet header is corrupt.
Best,
Bastian
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