main.cpp  --  AIS Decoder
 
 Demodulates GMSK encoded AIS data to AIS sentences.

 
 Based on aisdecoder from  Astra Paging Ltd / AISHub ([email protected])  
 
 http://forum.aishub.net/ais-decoder/ais-decoder-beta-release/ 

Modified by Pocket Mariner (C) 2015 to read directly from a fifo and not depend on audio (e.g. pulse) and to support tcp sockets as well as udp sockets. Also serial/USB out on BeagleBone (-n option). Retries (rather than fails) if network connection is required and socket is closed or not open. Ingores write fails with SIGNAL

 AISDecoder is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 AISDecoder uses parts of GNUAIS project (http://gnuais.sourceforge.net/)

To build:-

cd build cmake ../ -DCMAKE_BUILD_TYPE=RELEASE make

To run:- (reads sound data from /tmp/aisfifo)

#Have aisdecoder listen to a fifo rm /tmp/aisfifo mkfifo /tmp/aisfifo ./aisdecoder -h 54.225.113.225 -p 7011 -t 1 -n /dev/ttyO1 -d -f /tmp/aisfifo

then startup rtl_fm or gun-radio to output demodulated AIS data to the fifo (e.g. /tmp/aisfifo)