|I was able to get around the swig errors in the embedded block, but still need to do more testing to see if the modulated data is exactly what it should be. It looks correct so far. |
I replaced append with numpy.append and also used “import array” to copy the final char_list to a byte array
That seemed to be what got around the swig issue as it was complaining about the second argument.
“return _pmt_swig.init_u8vector(k, data)”
“argument 2 of type 'std::vector< uint8_t,std::allocator< uint8_t > > const &'“
On Nov 4, 2021, at 11:34, Evgeny Hahamovich <email@example.com> wrote:
Thank you Barry. Trying to follow your example. Here are 2 issues I encountered, will be glad if you can have a look:
In the Tx, the flow seems to be running, but I don't see any signal, and also I get the following error message:
handler caught exception: in method 'init_u8vector', argument 2 of type 'std::vector< uint8_t,std::allocator< uint8_t > > const &'
Traceback (most recent call last):
File "/usr/local/lib/python3/dist-packages/gnuradio/gr/gateway.py", line 78, in eval
File "/home/.../epy_block_0.py", line 37, in handle_msg
File "/usr/local/lib/python3/dist-packages/pmt/pmt_swig.py", line 2775, in init_u8vector
return _pmt_swig.init_u8vector(k, data)
TypeError: in method 'init_u8vector', argument 2 of type 'std::vector< uint8_t,std::allocator< uint8_t > > const &'
thread[thread-per-block: <block Packet Format(3)>]: SWIG director method error. Error detected when calling 'feval_p.eval'
do you know what could it mean?
In the Rx, since I'm using GNURadio 3.8, I replaced the Adaptive Algorithm block with the CMA Equalizer block, and I'm wondering, should I also add a Polyphase clock sync block before it?
On Tue, 2 Nov 2021 18:12:10 +0200, Evgeny Hahamovich wrote:
I am interested to learn how to use the Packet Communications concept, and
hope to get your advice. I am trying to start with some QPSK or something
similar, based on the packet_tx & packet_rx examples, but getting lost
along the way...
Can you maybe guide me to something basic I can use to start? Getting
totally lost with this :(
Especially with all the header parameters I should set up...