A small telemetry app for Direwolf to report load average, memory usage, temperature and receive audio level to APRS.
Clone this repo to your APRS IGate and run cargo build --release to build the app. The resulting binary is located at target/release/telem-direwolf.
Cross compilation is also supported: set up cross, run cross build --target arm-unknown-linux-gnueabihf --release, and copy target/arm-unknown-linux-gnueabihf/release/telem-direwolf to /usr/local/bin/telem-direwolf on your Raspberry Pi or any similar device.
The app is intended to be used in commentcmd together with telem-data91.pl:
PBEACON sendto=IG delay=1:05 every=15:00 symbol="igate" overlay=R comment="1200bps RX only IGate" commentcmd="telem-data91.pl `telem-seq.sh` `/usr/local/bin/telem-direwolf`"
Telemetry metadata can be configured this way:
CBEACON sendto=IG delay=1:30 every=1000000 infocmd="telem-parm.pl N0CALL-10 LoadAvg5m MemUsed Temp AudioLvl"
CBEACON sendto=IG delay=1:31 every=1000000 infocmd="telem-unit.pl N0CALL-10 '' % C ''"
CBEACON sendto=IG delay=1:32 every=1000000 infocmd="telem-eqns.pl N0CALL-10 0 0.1 0 0 1 0 0 1 0 0 1 0"
Receiving audio level is gathered from logs so first you need to enable audio level logging. Run systemctl edit and change ExecStart by appending -a 60:
[Service]
SupplementaryGroups=systemd-journal
ExecStart=
ExecStart=/usr/bin/direwolf -c /etc/direwolf.conf -r 24000 -a 60
StandardOutput=journal
Next, restart Direwolf:
systemctl daemon-reload
systemctl restart direwolf
And it should start reporting audio level to logs and APRS.
This repo also provides telem-seq written in Rust that can be used as a replacement for telem-seq.sh.
PBEACON sendto=IG delay=1:05 every=15:00 symbol="igate" overlay=R comment="1200bps RX only IGate" commentcmd="telem-data91.pl `/usr/local/bin/telem-seq` `/usr/local/bin/telem-direwolf`"