Hello everybody and HNY !I
have almost finished writing (Gnuradio 3.10.1.1) an OOT block, at the
moment an Embeeded block, that is able to produce the data needed for
satellite tracking (azimuth / elevation / doppler / etc) without having
to have an external application, in my case Gpredict.The block is timed by a Message Strobe and the output is then passed to variables via "Message pair to Var."
Everything works as expected, except for passing a list, via message, that contains the names of the satellites. This list will then be used in a QT Chooser to select the satellite to track.
This is the code snippet:
sat_list = list(sats.keys()) print (sat_list[:5])
tag = pmt.string_to_symbol("sats")
value = pmt.to_pmt(sat_list)
sats_msg = pmt.cons(tag, value)
self.message_port_pub(pmt.intern('sats'),sats_msg)
and this is the consolle output:
******* from print(sat_list[:5] ********['AO-07', 'UO-11', 'AO-16', 'LO-19', 'AO-27']
******* MESSAGE DEBUG PRINT ********
(sats . #(AO-07 UO-11 AO-16 LO-19 AO-27 ...... and so on )
It is evident that the message payload "is" a list but all values are not separated by the commas or even superscripts ......Any hints?
Looking at online documentation I'm not able to find so much examples about passing a list via pmt.
Find in attachment grc file screenshot.
Tnx for any info / suggestion ;-)
Best regards de Vittorio, I3VFJ
gr_doppler_7.png