emcomm-tools-os-community/overlay/opt/emcomm-tools/bin/et-reticulum

#!/bin/bash
#
# Author  : Gaston Gonzalez
# Date    : 12 May 2026
# Updated : 15 May 2026
# Purpose : Wrapper script for starting Reticulum with PnP support
#
# Preconditions:
# 1. Supported radio and audio interface are connected and properly detected
#
# Postconditions:
# 1. Reticulum configuration updated
# 2. Optional modem started
# 3. Reticulum started
. /opt/emcomm-tools/bin/et-common

APP="Reticulum"
RETICULUM_CONF_DIR="${HOME}/.reticulum"
RETICULUM_CONF_FILE="${RETICULUM_CONF_DIR}/config"

INTERFACE_RNODE_TXPOWER_DEFAULT=17

options=()
files=()
index=1

while IFS= read -r file; do
  name=$(basename "$file")
  files[$index]="$name"
  options+=("$index" "$name")
  ((index++))
done < <(find "${HOME}/.reticulum" -type f -name 'config.blueprint.*' | sort)

choice=$(dialog \
  --title "Reticulum Configuration" \
  --menu "Choose a blueprint:" \
  15 60 10 \
  "${options[@]}" \
  2>&1 >/dev/tty)
EXIT_STATUS=$?

tput sgr0 && clear

if [[ ${EXIT_STATUS} -ne 0 ]]; then
  et-log "No blueprint configuration selected"
  exit ${EXIT_STATUS}
fi

SELECTED_CONF="${files[$choice]}"

if [[ ! -e "${RETICULUM_CONF_DIR}" ]]; then
  et-log "Creating missing configuration directory: ${RETICULUM_CONF_DIR}"
  mkdir -p "${RETICULUM_CONF_DIR}"
fi

ACTIVE_CONF_FILE="${RETICULUM_CONF_DIR}/${SELECTED_CONF}"
if [[ ! -e ${ACTIVE_CONF_FILE} ]]; then
  et-log "${ACTIVE_CONF_FILE} does not exist."
  exit 1
fi

et-log "Using ${ACTIVE_CONF_FILE}"

if [[ -e "${RETICULUM_CONF_FILE}" ]]; then
  et-log "Removing previous Reticulum configuration: ${RETICULUM_CONF_FILE}"
  rm "${RETICULUM_CONF_FILE}"
fi

et-log "Linking new configuration..."
ln -v -s "${ACTIVE_CONF_FILE}" "${RETICULUM_CONF_FILE}"

############################################################
# Optionally, launch a modem if a radio is connected
############################################################

# If a supported radio is plugged in and detected, it  will have the 
# rigctld process running automatically.
IS_RADIO_CONNECTED=`ps -ef | grep [r]igctld`
if [[ $? -eq 0 ]]; then

  et-log "Radio connected and detected." 

  modem_options=()
  modem_options+=("1200" "1200 baud (VHF/UHF operation)")
  modem_options+=("300" "300 baud (HF option)")

  modem_choice=$(dialog \
    --clear \
    --title "Reticulum Configuration" \
    --menu "Select a modem" \
    13 60 10 \
    "${modem_options[@]}" \
    2>&1 >/dev/tty)

  dialog \
    --title "Note on Reticulum" \
    --yesno "Reticulum uses end-to-end encryption. Check your local laws and regulations and ensure that you can legally run this mode! Are you sure that you want to run this?" \
  0 0
  EXIT_STATUS=$?

  tput sgr 0 && clear

  if [[ ${EXIT_STATUS} -ne 0 ]]; then
    et-log "User canceled modem selection. Packet modem will not be started and interface will not be enabled."
  else
    case ${modem_choice} in
      300)
        et-log "Starting 300 baud packet modem"
        start_and_wait_for_service et-service-direwolf-300
      ;;
      1200)
        et-log "Starting 1200 baud packet modem"
        start_and_wait_for_service et-service-direwolf-simple
      ;;
      *)
        et-log "No modem specified"
      ;;
    esac
  fi
fi

et-log "Updating configuration for this session..."

############################################################
# AX.25 KISS (Packet Radio) interface updates
############################################################

# Enable/disable intereface based on PnP device detection
if [[ -e /tmp/kisstnc ]]; then
  INTERFACE_AX25KISS_ENABLED="yes"
else
  INTERFACE_AX25KISS_ENABLED="no"
fi
sed -i "s|{{ET_RETICULUM_INTERFACE_AX25KISS_ENABLED}}|${INTERFACE_AX25KISS_ENABLED}|g" ${RETICULUM_CONF_FILE}

# Update callsign
[[ -z "$ET_USER_CONFIG" ]] && ET_USER_CONFIG="${HOME}/.config/emcomm-tools/user.json"
CALLSIGN=$(cat ${ET_USER_CONFIG} | jq -r .callsign)
sed -i "s|{{ET_CALLSIGN}}|${CALLSIGN}|g" ${RETICULUM_CONF_FILE} 


############################################################
# RNode (LoRA) interface updates
############################################################

# Enable/disable intereface based on PnP device detection
if [[ -e "${ET_DEVICE_LORA}" ]]; then
  INTERFACE_RNODE_ENABLED="yes"

  # Determine max power settings
  et-log "Connecting to device to determine max power..."

  INTERFACE_RNODE_TXPOWER=`rnodeconf -i ${ET_DEVICE_LORA} | awk -F': ' '/Max TX power/ {print $2}' | awk '{print $1}'`
  if [[ $? -ne 0 ]]; then
    INTERFACE_RNODE_TXPOWER=${INTERFACE_RNODE_TXPOWER_DEFAULT}
    et-log "Can't determine max power. Using defaulting ${INTERFACE_RNODE_TXPOWER}."
  fi

  et-log "Setting max power to ${INTERFACE_RNODE_TXPOWER} dBm."
  sed -i "s|{{ET_RETICULUM_INTERFACE_RNODE_TXPOWER}}|${INTERFACE_RNODE_TXPOWER}|g" ${RETICULUM_CONF_FILE}

else
  INTERFACE_RNODE_ENABLED="no"
fi

sed -i "s|{{ET_RETICULUM_INTERFACE_RNODE_ENABLED}}|${INTERFACE_RNODE_ENABLED}|g" ${RETICULUM_CONF_FILE}


CMD="rnsd"
et-log "Starting Reticulum: ${CMD}"

${CMD}