Hello everyone, I have just finished testing with good results a new implementation of RDS decoding. This work is based on the rds block published on the list some time ago from Ronnie Gaensli, and later adapted by Ryan Shoff.
Main changes from the original version posted: biphase_decoder: 1) loss of sync implemented 2) samples consumption fixed when aligning clock and signal data_decoder_cc: 1) sync is now based on syndrome calculation 2) loss of sync implemented 3) group decoding for all of the 30 possible group types (work in progress) 4) message model implemented to send decoded information to graphical frontend The solution is made up of a custom block gr-rds, contained in the gr-rds-new.tgz archive, and some python files, stored in rds.tgz. After compiling and installing the block, you will need to run rds_scope.py to use the software. It makes use of rds_rx.py where the rds receiver chain is implemented, and rdspanel.py where the wxwidgets panel. As soon as valid RDS info is received and locked the appropriate fields on the interface will change accordingly - some fields as name of the station, program type and so on will show the appropriate strings, while the "flag" fields will light RED if the corresponding function is active according to decoded RDS. The whole thing gets reset upon frequency change. This is still work in progress as not all the group types are currently managed (there is a case in the switch, but no code into it). This is the link where you can download tgz archives from: http://digilander.libero.it/iz2eeq/#rds Reports, comments and suggestions are welcome as always. Matteo iz2eeq _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
