Audio - Added dummy rig control support for the DigiRig Lite to maintain the rigctl NET interface consistently for all radio-based applications

overlay/etc/udev/rules.d/79-et-generic-remove.rules

@@ -1,9 +1,10 @@
 # Author   : Gaston Gonzalez
 # Date     : 14 October 2024
+# Updated  : 24 October 2024
 # Purpose  : udev rules for generic remove events
 #
 # Preconditions:
-# 1. CAT control device is unplugged
+# 1. CAT control device (or DigiRig Lite) is unplugged
 #
 # Postconditions:
 # 1. rigctld is stopped
@@ -11,3 +12,8 @@
 SUBSYSTEM=="tty", ENV{ET_SUBDEVICE}=="CAT", \
   ACTION=="remove", \
   RUN+="/opt/emcomm-tools/sbin/wrapper-rigctld.sh stop"
+
+
+SUBSYSTEM=="sound",ENV{ET_SUBDEVICE}=="AUDIO", \
+  ACTION=="remove", \
+  RUN+="/opt/emcomm-tools/sbin/wrapper-rigctld.sh stop"

overlay/etc/udev/rules.d/90-et-digirig-lite.rules

@@ -1,15 +0,0 @@
-# Author  : Gaston Gonzalez
-# Date    : 17 October 2024
-# Updated : 21 October 2024 
-# Purpose : udev rules for the DigiRig Lite
-#
-# Preconditions:
-# 1. DigiRig Lite connected via USB cable
-#
-# Postconditions:
-# 1. /dev/et-audio created
-
-SUBSYSTEM=="sound", ATTRS{idVendor}=="0d8c", ATTRS{idProduct}=="0012", ENV{ET_DEVICE}=="", \
-    ACTION=="add", \
-    ATTR{id}="ET_AUDIO", \
-    ENV{ET_DEVICE}="DIGIRIG_LITE", ENV{ET_SUBDEVICE}="AUDIO", GROUP="audio", MODE="0660", SYMLINK+="et-audio"

overlay/etc/udev/rules.d/91-et-digirig-lite.rules

@@ -0,0 +1,21 @@
+# Author  : Gaston Gonzalez
+# Date    : 17 October 2024
+# Updated : 24 October 2024 
+# Purpose : udev rules for the DigiRig Lite
+#
+# Preconditions:
+# 1. The radio is set to 'generic-vox' using et-radio.
+# 2. DigiRig Lite connected via USB cable
+#
+# Postconditions:
+# 1. /dev/et-audio created
+# 2. rigctld is started
+
+# The DigiRig Lite has no CAT control, but rigctld is started to minimize the configuration needed
+# by the various amateur radio applications. EmComm Tools treats rigctl NET as its abstraction layer.
+# A dummy rig control configuration is specifed in the 'generic-vox' radio configuration.
+SUBSYSTEM=="sound", ATTRS{idVendor}=="0d8c", ATTRS{idProduct}=="0012", ENV{ET_DEVICE}=="", \
+    ACTION=="add", \
+    ATTR{id}="ET_AUDIO", \
+    ENV{ET_DEVICE}="DIGIRIG_LITE", ENV{ET_SUBDEVICE}="AUDIO", GROUP="audio", MODE="0660", SYMLINK+="et-audio" \
+    RUN+="/usr/bin/systemctl start rigctld"

overlay/lib/systemd/system/rigctld.service

@@ -1,6 +1,6 @@
 [Unit]
 Description=Rig Control Service
-ConditionPathExists=/dev/et-cat
+#ConditionPathExists=/dev/et-cat
 After=multi-user.target
 
 [Service]

overlay/opt/emcomm-tools/conf/radios.d/generic-vox.json

@@ -0,0 +1,11 @@
+{
+  "id": "generic-vox",
+  "vendor": "Generic",
+  "model": "VOX",
+  "rigctrl": {
+    "id": "1",
+    "ptt": "NONE"
+  },
+  "notes": [
+  ]
+}

overlay/opt/emcomm-tools/sbin/wrapper-rigctld.sh

@@ -2,6 +2,7 @@
 #
 # Author  : Gaston Gonzalez
 # Date    : 9 October 2024
+# Updated : 24 October 2024
 # Purpose : Wrapper startup/shutdown script around systemd/rigctld
 
 ET_HOME=/opt/emcomm-tools
@@ -27,6 +28,24 @@ do_full_auto() {
 }
 
 start() {
+
+  # Special case for VOX devices like the DigiRig Lite.
+  if [ -L "${ET_HOME}/conf/radios.d/active-radio.json" ]; then
+    CUR_RADIO=$(cat "${ET_HOME}/conf/radios.d/active-radio.json" | jq -r .model)
+    if [ "${CUR_RADIO}" = "VOX" ]; then
+      et-log "Starting dummy rigctld service for VOX device."
+
+      ID=$(cat ${ET_HOME}/conf/radios.d/active-radio.json | jq -r .rigctrl.id)
+      PTT=$(cat ${ET_HOME}/conf/radios.d/active-radio.json | jq -r .rigctrl.ptt)
+
+      CMD="rigctld -m ${ID} -P ${PTT} "
+      et-log "Starting rigctld with: ${CMD}"
+      $CMD
+
+      exit 0
+    fi
+  fi
+
   if [ ! -e ${CAT_DEVICE} ]; then
     et-log "No CAT device found. ${CAT_DEVICE} symlink is missing."
     exit 1