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PTT using GPIO pin of CM108/CM119 (e.g. DMK URI, RB-USB RIM), Linux only.
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More efficient error recovery for AX.25 connected mode. Better generation and processing of REJ and SREJ to reduce unnecessary duplicate "I" frames.
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New configuration option, "V20", for listing stations known to not understand AX.25 v2.2. This will speed up connection by going right to SABM and not trying SABME first and failing.
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New "NOXID" configuration file option to avoid sending XID command to listed station(s). If other end is a partial v2.2 implementation, which recognizes SABME, but not XID, we would waste a lot of time resending XID many times before giving up. This is less drastic than the "V20" option which doesn't even attempt to use v2.2 with listed station(s).
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New application "kissutil" for troubleshooting a KISS TNC or interfacing to an application via files.
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KISS "Set Hardware" command to report transmit queue length.
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TCP KISS can now handle multiple concurrent applications.
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Linux can use serial port for KISS in addition to a pseudo terminal.
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decode_aprs utility can now accept KISS frames and AX.25 frames as series of two digit hexadecimal numbers.
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Full Duplex operation. (Put "FULLDUP ON" in channel section of configuration file.)
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Time slots for beaconing.
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Allow single log file with fixed name rather than starting a new one each day.
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Possible crash when CDIGIPEAT did not include the optional alias.
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PACLEN configuration item no longer restricts length of received frames.
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Strange failures when trying to use multiple KISS client applications over TCP. Only Linux was affected.
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Under certain conditions, outgoing connected mode data would get stuck in a queue and not be transmitted. This could happen if client application sends a burst of data larger than the "window" size (MAXFRAME or EMAXFRAME option).
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Little typographical / spelling errors in messages.
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New document Bluetooth-KISS-TNC.pdf explaining how to use KISS over Bluetooth.
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Updates describing cheap SDR frequency inaccuracy and how to compensate for it.
Windows binary distribution now uses gcc (MinGW) version 6.3.0.
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AX.25 v2.2 connected mode. See chapter 10 of User Guide for details.
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New client side packet filter to select "messages" only to stations that have been heard nearby recently. This is now the default if no IS to RF filter is specified.
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New beacon type, IBEACON, for sending IGate statistics.
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Expanded debug options so you can understand what is going on with packet filtering.
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Added new document Successful-APRS-IGate-Operation.pdf with IGate background, configuration, and troubleshooting tips.
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2400 & 4800 bps PSK modems. See 2400-4800-PSK-for-APRS-Packet-Radio.pdf in the doc directory for discussion.
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The top speed of 9600 bps has been increased to 38400. You will need a sound card capable of 96k or 192k samples per second for the higher rates. Radios must also have adequate bandwidth. See Going-beyond-9600-baud.pdf in the doc directory for more details.
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Better decoder performance for 9600 and higher especially for low audio sample rate to baud ratios.
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Generate waypoint sentences for use by AvMap G5 / G6 or other mapping devices or applications. Formats include
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$GPWPL - NMEA generic with only location and name.
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$PGRMW - Garmin, adds altitude, symbol, and comment to previously named waypoint.
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$PMGNWPL - Magellan, more complete for stationary objects.
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$PKWDWPL - Kenwood with APRS style symbol but missing comment.
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DTMF tones can be sent by putting "DTMF" in the destination address, similar to the way that Morse Code is sent.
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Take advantage of new 'gpio' group and new /sys/class/gpio ownership in Raspbian Jessie.
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Handle more complicated gpio naming for CubieBoard, etc.
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More flexible dw-start.sh start up script for both GUI and CLI environments.
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The transmitter (PTT control) was being turned off too soon when sending Morse Code.
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The -qd (quiet decode) command line option now suppresses errors about improperly formed Telemetry packets.
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Longer tocall.txt files can now be handled.
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Sometimes kissattach would have an issue with the Dire Wolf pseudo terminal. This showed up most often on Raspbian but sometimes occurred with other versions of Linux.
kissattach: Error setting line discipline: TIOCSETD: Device or resource busy Are you sure you have enabled MKISS support in the kernel or, if you made it a module, that the module is loaded?
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Sometimes writes to a pseudo terminal would block causing the received frame processing thread to hang. The first thing you will notice is that received frames are not being printed. After a while this message will appear:
Received frame queue is out of control. Length=... Reader thread is probably frozen. This can be caused by using a pseudo terminal (direwolf -p) where another application is not reading the frames from the other side.
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-p command line option caused segmentation fault with glibc >= 2.24.
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The Windows version 1.3 would crash when starting to transmit on Windows XP. There have also been some other reports of erratic behavior on Windows. The crashing problem was fixed in in the 1.3.1 patch release. Linux version was not affected.
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IGate did not retain nul characters in the information part of a packet. This should never happen with a valid APRS packet but there are a couple cases where it has. If we encounter these malformed packets, pass them along as-is, rather than truncating.
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Don't digipeat packets when the source is my call.
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Support for Mac OS X.
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Many APRStt enhancements including: Morse code and speech responses to to APRStt tone sequences, new 5 digit callsign suffix abbreviation, position ambiguity for latitude and longitude in object reports
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APRS Telemetry Toolkit.
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GPS Tracker beacons are now available for the Windows version. Previously this was only in the Linux version.
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SATgate mode for IGate. Packets heard directly are delayed before being sent to the Internet Server. This favors digipeated packets because the original arrives later and gets dropped if there are duplicates.
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Added support for hamlib. This provides more flexible options for PTT control.
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Implemented AGW network protocol 'M' message for sending UNPROTO information without digipeater path.
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A list of all symbols available can be obtained with the -S command line option.
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Command line option "-a n" to print audio device statistics each n seconds. Previously this was always each 100 seconds on Linux and not available on Windows.
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Fixed several cases where crashes were caused by unexpected packet contents:
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When receiving packet with unexpected form of GPS NMEA sentence.
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When receiving packet with comment of a few hundred characters.
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Address in path, from Internet server, more than 9 characters.
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"INTERNAL ERROR: dlq_append NULL packet pointer." when using PASSALL.
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In Mac OSX version: Assertion failed: (adev[a].inbuf_size_in_bytes >= 100 && adev[a].inbuf_size_in_bytes <= 32768), function audio_get, file audio_portaudio.c, line 917.
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Tracker beacons were not always updating the location properly.
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AGW network protocol now works properly for big-endian processors such as PowerPC or MIPS.
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Packet filtering treated telemetry metadata as messages rather than telemetry.
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Improved decoder performance.
Over 1000 error-free frames decoded from WA8LMF TNC Test CD.
See A-Better-APRS-Packet-Demodulator-Part-1-1200-baud.pdf for details. -
Up to 3 soundcards and 6 radio channels can be handled at the same time.
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New framework for applications which listen for Touch Tone commands and respond with voice. A sample calculator application is included as a starting point for building more interesting applications.
For example, if it hears the DTMF sequence "234#" it will respond with the spoken words "Twenty Four." -
Reduced latency for transfers to/from soundcards.
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More accurate transmit PTT timing.
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Packet filtering for digipeater and IGate.
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New command line -q (quiet) option to suppress some types of output.
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Attempted fixing of corrupted bits now works for 9600 baud.
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Implemented AGW network protocol 'y' message so applications can throttle generation of packets when sending a large file.
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When using serial port RTS/DTR to activate transmitter, the two control lines can now be driven with opposite polarity as required by some interfaces.
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Data Carrier Detect (DCD) can be sent to an output line (just like PTT) to activate a carrier detect light.
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Linux "man" pages for on-line documentation.
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AGWPORT and KISSPORT can be set to 0 to disable the interfaces.
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APRStt gateway enhancements: MGRS/USNG coordinates, new APRStt3 format call, satellite grid squares.
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Fixed "gen_packets" so it now handles user-specified messages correctly.
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Under some circumstances PTT would be held on long after the transmit audio was finished.
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Sometimes writes to a pseudo terminal will block causing the received frame processing thread to hang. The first thing you will notice is that received frames are not being printed. After a while this message will appear:
Received frame queue is out of control. Length=... Reader thread is probably frozen. This can be caused by using a pseudo terminal (direwolf -p) where another application is not reading the frames from the other side.
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Logging of received packets and utility to convert log file into GPX format.
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AGW network port formerly allowed only one connection at a time. It can now accept 3 client applications at the same time.
(Same has not yet been done for network KISS port.) -
Frequency / offset / tone standard formats are now recognized. Non-standard attempts, in the comment, are often detected and a message suggests the correct format.
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Telemetry is now recognized. Messages are printed for usage that does not adhere to the published standard.
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Tracker function transmits location from GPS position. New configuration file options: TBEACON and SMARTBEACONING. (For Linux only. Warning - has not been well tested.)
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Experimental packet regeneration feature for HF use. Will be documented later if proves to be useful...
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Several enhancements for trying to fix incorrect CRC: Additional types of attempts to fix a bad CRC. Optimized code to reduce execution time. Improved detection of duplicate packets from different fixup attempts. Set limit on number of packets in fix up later queue.
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Beacon positions can be specified in either latitude / longitude or UTM coordinates.
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It is still highly recommended, but no longer mandatory, that beaconing be enabled for digipeating to work.
- Bugs fixed:
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For Windows version, maximum serial port was COM9. It is now possible to use COM10 and higher.
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Fixed issue with KISS protocol decoder state that showed up only with "binary" data in packets (e.g. RMS Express).
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An extra 00 byte was being appended to packets from AGW network protocol 'K' messages.
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Invalid data from an AGW client application could cause an application crash.
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OSS (audio interface for non-Linux versions of Unix) should be better now.
- Sometimes kissattach fails to connect with "direwolf -p". The User Guide and Raspberry Pi APRS document have a couple work-arounds.
- Beacons sent directly to IGate server had incorrect source address.
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Received audio can be obtained with a UDP socket or stdin. This can be used to take audio from software defined radios such as rtl_fm or gqrx.
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9600 baud data rate.
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New PBEACON and OBEACON configuration options. Previously it was necessary to handcraft beacons.
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Less CPU power required for 300 baud. This is important if you want to run a bunch of decoders at the same time to tolerate off-frequency HF SSB signals.
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Improved support for UTF-8 character set.
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Improved troubleshooting display for APRStt macros.
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In earlier versions, the DTMF decoder was always active because it took a negligible amount of CPU time. Unfortunately this sometimes resulted in too many false positives from some other types of digital transmissions heard on HF. Starting in version 1.0, the DTMF decoder is enabled only when the APRStt gateway is configured.
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Selection of non-default audio device for Linux ALSA.
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Simplified audio device set up for Raspberry Pi.
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GPIO lines can be used for PTT on suitable Linux systems.
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Improved 1200 baud decoder.
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Multiple decoders per channel to tolerate HF SSB signals off frequency.
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Command line option "-t 0" to disable text colors.
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APRStt macros which allow short numeric only touch tone sequences to be processed as much longer predefined sequences.
- Now works on 64 bit target.
- Minimum processor is now Pentium 3 or equivalent or later. It's possible to run on something older but you will need to rebuild it from source.
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Internet Gateway (IGate) including IPv6 support.
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Compatibility with YAAC.
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Preemptive digipeating option.
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KISS TNC should now work with connected AX.25 protocols (e.g. AX25 for Linux), not just APRS.
- Added APRStt gateway capability. For details, see APRStt-Implementation-Notes.pdf
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Improved performance of AFSK demodulator. Now decodes 965 frames from Track 2 of WA8LMF's TNC Test CD.
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KISS protocol now available thru a TCP socket. Default port is 8001. Change it with KISSPORT option in configuration file.
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Ability to salvage frames with bad FCS. See section mentioning "bad apple" in the user guide. Default of fixing 1 bit works well.
Fixing more bits not recommended because there is a high probability of occasional corrupted data getting thru. -
Added AGW "monitor" format messages. Now compatible with APRS-TW for telemetry.
- The Linux (but not Cygwin) version eventually hangs if nothing is reading from the KISS pseudo terminal. Some operating system queue fills up, the application write blocks, and decoding stops.
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If another application is not using the serial KISS interface, run this in another window:
tail -f /tmp/kisstnc
- More error checking and messages for invalid APRS data.
- First general availability.