BTECH UV PRO - Initial support for connecting to the Bluetooth serial device on the BTECH UV PRO.

overlay/etc/adduser.conf

@@ -79,7 +79,7 @@ USERS_GID=1981
 # new users to other groups.
 # This is the list of groups that new non-system users will be added to
 # Default:
-EXTRA_GROUPS="dialout cdrom floppy audio video plugdev users"
+EXTRA_GROUPS="bluetooth dialout cdrom floppy audio video plugdev users"
 
 # If ADD_EXTRA_GROUPS is set to something non-zero, the EXTRA_GROUPS
 # option above will be default behavior for adding new, non-system users

overlay/etc/skel/notes/btech-uv-pro.md

@@ -0,0 +1,82 @@
+# BTECH UV Pro Bluetooth TNC Notes
+
+## Linux Packet Configuration
+
+Edit `/etc/ax25/axports` has root and add the following line.
+
+```
+PKT1200 KT7RUN 1200 255 2 145.710
+```
+
+## Radio Configuration
+
+* KISS TNC > Enable KISS TNC = checked
+
+## Pair Radio and Computer
+
+1. On the radio, start the pairing process by navigating to 
+   Menu > Pairing.
+
+2. 
+ 
+3. On the computer, run `bluetoothctl`
+
+```
+> power on
+> scan on
+> pair 38:D2:00:00:ED:C8
+> trust 38:D2:00:00:ED:C8
+> quit
+```
+
+## If you're already paired
+
+1. Kill any instances of rfcomm if they are running
+
+```
+sudo killall rfcomm
+```
+
+2. 
+
+```
+$ sudo rfcomm connect /dev/rfcomm0 38:D2:00:00:ED:C8
+Connected /dev/rfcomm0 to 38:D2:00:00:ED:C8 on channel 1
+Press CTRL-C for hangup
+```
+
+3. In another window, check that you are connected.
+
+```
+bluetoothctl info 38:D2:00:00:ED:C8 | grep Connected | awk '{print $2}'
+```
+
+4. Kill any instances of kissattach if they are running.
+
+```
+sudo killall kissattach
+```
+
+5. Attach to the desired AX.25 port.
+
+```
+$ sudo kissattach /dev/rfcomm0 PKT1200
+AX.25 port PKT1200 bound to device ax0
+```
+
+6. Connect to the BBS
+
+```
+axcall PKT1200 TTPBBS
+```
+
+Listen to incoming and outgoing packets and capture the time
+stamps for the traffic.
+
+```
+$ sudo axlisten -a -t
+```
+
+## Troubleshooting
+
+1. systemctl status  bluetooth

overlay/etc/sudoers.d/et-rfcomm

@@ -0,0 +1,7 @@
+%bluetooth ALL=(ALL) NOPASSWD: /usr/bin/rfcomm *
+%bluetooth ALL=(ALL) NOPASSWD: /usr/sbin/kissattach /dev/rfcomm0 *
+%bluetooth ALL=(ALL) NOPASSWD: /usr/sbin/kissparms *
+
+%bluetooth ALL=(ALL) NOPASSWD: /usr/bin/killall kissattach
+%bluetooth ALL=(ALL) NOPASSWD: /usr/bin/killall kissattach
+%bluetooth ALL=(ALL) NOPASSWD: /usr/bin/killall rfcomm

overlay/opt/emcomm-tools/bin/et-uv-pro

@@ -0,0 +1,102 @@
+#!/bin/bash
+#
+# Author   : Gaston Gonzalez
+# Date     : 1 January 2025
+# Purpose  : Utility for accessing the Bluetooth TNC on the BTECH
+#            UV Pro.           
+
+# TODO: read from file
+CONF_FILE="${HOME}/.config/emcomm-tools/btech-uv-pro.json"
+MAC="38:D2:00:00:ED:C8"
+
+# TODO: Write to /etc/ax25/axports
+
+BT_DEVICE="/dev/rfcomm0"
+AX25_PORT="pkt1200"
+
+RED='\x1B[1;31m'
+BLUE='\x1B[1;34m'
+CYAN='\x1B[1;36m'
+GREEN='\x1B[1;32m'
+YELLOW='\x1B[1;33m'
+NC='\x1B[0m'
+
+function usage() {
+  echo "Usage: $(basename $0) <command>"
+  echo "  connect - Connect to radio via Bluetooth" 
+  echo "  pair    - Pair radio via Bluetooth" 
+  echo "  unpair  - Unpair radio via Bluetooth" 
+}
+
+if [ $# -ne 1 ]; then
+  usage
+  exit 1
+fi
+
+
+stop_all_services() {
+
+  PS_OUT=$(ps -ef | grep [k]issattach) 
+  if [ $? -eq 0 ]; then
+    echo -e "${BLUE}Killing kissattach process(es)...${NC}"
+    sudo killall kissattach
+  fi
+ 
+  sleep 3
+
+  PS_OUT=$(ps -ef | grep [r]fcomm) 
+  if [ $? -eq 0 ]; then
+    echo -e "${BLUE}Killing rfcomm process(es)...${NC}"
+    sudo killall rfcomm
+  fi
+
+}
+
+case $1 in
+  connect)
+    echo -e "${YELLOW}"
+    read -p "Turn on BTech UV Pro, then press [ENTER] when on."
+
+    is_paired=$(bluetoothctl info ${MAC} | grep "Paired" | awk '{print $2}')
+    if [ "${is_paired}" != "yes" ]; then
+    echo -e "${RED}"
+      et-log "UV Pro is not paired. Run: '$(basename $0) pair'"
+      echo -e "${NC}"
+      exit 1
+    fi  
+ 
+    echo -e "${GREEN}Found UV Pro with MAC address: ${MAC}" 
+    stop_all_services
+
+    echo -e "${BLUE}Connecting to radio..." 
+    sudo rfcomm connect /dev/rfcomm0 ${MAC} 1>/dev/null 2>&1 &
+
+    sleep 10 && reset
+
+    if [ -e /dev/rfcomm0 ]; then
+      echo -e "${GREEN}UV Pro connected via Bluetooth serial${NC}" 
+    else
+      echo -e "${RED}UV Pro failed to connect via Bluetooth serial${NC}"
+      exit 1
+    fi
+
+    echo -e "${BLUE}Connecting KISS interface using ${BT_DEVICE} and AX.25 port: ${AX25_PORT}${NC}"
+    KISS_OUT=$(sudo kissattach ${BT_DEVICE} ${AX25_PORT})
+    
+    if [ $? -eq 0 ]; then
+      echo -e "${GREEN}Packet port ready"
+    else 
+      echo -e "${RED}Failed to setup radio for packet.${NC}"
+      exit 1
+    fi
+
+    KISS_OUT=$(sudo kissparms -c 1 -p ${AX25_PORT})
+
+    echo -e "${YELLOW}\nRun: axcall pkt1200 <STATION>${NC}"
+    ;;
+  *)
+    et-log "Invalid command."
+    usage
+    exit 1
+  ;;
+esac