Initial pigate packer builder

.gitignore

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+output-arm-image
+packer_cache
+*.img
+.DS_Store
+wpa_supplicant.conf
+sdr.conf

CNAME

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+pigate.dev

Makefile

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+all: clean build
+
+clean:
+	rm -f output-arm-image/image
+
+docker:
+	docker pull docker.pkg.github.com/solo-io/packer-builder-arm-image/packer-builder-arm
+
+build: docker
+	docker run \
+		--rm \
+		--privileged \
+		-v ${PWD}:/build:ro \
+		-v ${PWD}/packer_cache:/build/packer_cache \
+		-v ${PWD}/output-arm-image:/build/output-arm-image \
+		-e PACKER_CACHE_DIR=/build/packer_cache \
+	packer-builder-arm build packer/aprs-pigate.json
+	mv output-arm-image/image output-arm-image/aprs-pigate.img

README.md

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+# aprs-pigate
+Prebuilt Raspberry Pi image for running a HAM radio APRS Internet Gateway using [direwolf] and [rtl-sdr]
+
+## Usage
+1. Download & Flash the image to an SD card
+2. Insert SD card into a computer and load your wpa_supplicant.conf into boot if you are using wifi, and drop in a [pigate.conf](files/boot/pigate.conf) with your Callsign and password. You can use any custom direwolf config file here, enabling many different hardware configurations!
+3. Insert into a raspberry pi with RTL-SDR plugged into USB, and power up! If everything was configured correctly, in about 5 minutes you should see it pop up on [aprs.fi].
+
+## Contributing & Development
+This project uses the following dependencies:
+- Docker for Mac >= 2.3.2.0 (currently in edge)
+- [`packer-build-arm-image`] in this repo I use the public docker image, but you can checkout this repo if you need to customize the build environment and build a custom docker image
+- [`flash`] I use this to set a custom hostname on each flash, and is what is referenced in Makefile. However, you can flash the images using any conventional method.
+
+Run `make build` to start building your first image.
+
+[aprs.fi]: https://aprs.fi
+[direwolf]: https://github.com/wb2osz/direwolf
+[`flash`]: https://github.com/hypriot/flash
+[`packer-build-arm-image`]: https://github.com/solo-io/packer-builder-arm-image/
+[rtl-sdr]: https://www.rtl-sdr.com/

_config.yml

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+theme: jekyll-theme-cayman

files/boot/pigate.conf

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+# We might not have an audio output device so set to null.
+# We will override the input half on the command line.
+ADEVICE null null
+CHANNEL 0
+
+# Set your callsign here
+# I use SSID 10 for igate
+MYCALL XXXXXX-10
+
+# First you need to specify the name of a Tier 2 server.
+# The current preferred way is to use one of these regional rotate addresses:
+#	noam.aprs2.net 		- for North America
+#	soam.aprs2.net		- for South America
+#	euro.aprs2.net		- for Europe and Africa
+#	asia.aprs2.net 		- for Asia
+#	aunz.aprs2.net		- for Oceania
+IGSERVER noam.aprs2.net
+
+# You also need to specify your login name and passcode.
+# http://apps.magicbug.co.uk/passcode/
+IGLOGIN XXXXXX-10 1234
+
+# Set your GPS coordinates for the igate to show up on the map
+PBEACON sendto=IG delay=0:30 every=60:00 symbol="igate" overlay=R at=42^37.14N long=071^20.83W comment="RPi SDR DireWolf I-Gate https://pigate.dev"
+
+# That's all you need for a receive only IGate which relays
+# messages from the local radio channel to the global servers.

files/boot/user-data.yaml

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+#cloud-config
+# vim: syntax=yaml
+#
+
+hostname: aprs-pigate
+manage_etc_hosts: true
+apt_preserve_sources_list: true
+
+resize_rootfs: true
+growpart:
+    mode: auto
+    devices: ["/"]
+    ignore_growroot_disabled: false
+
+users:
+  - name: pi
+    gecos: "DefaultUser"
+    sudo: ALL=(ALL) NOPASSWD:ALL
+    shell: /bin/bash
+    groups: users
+    lock_passwd: false
+    ssh_pwauth: false
+    chpasswd: { expire: false }
+
+package_update: true
+package_upgrade: true
+package_reboot_if_required: true
+packages:
+  - ntp
+
+locale: "en_US.UTF-8"
+timezone: "America/Chicago"
+
+final_message: "The system is finally up, after $UPTIME seconds"
+
+runcmd:
+  # Copy over user's predefined pigate conf to autostart
+  - [ mv, "/boot/pigate.conf", "/home/pi/pigate.conf"]
+  - [ chown, "pi:pi", "/home/pi/pigate.conf"]

files/etc/cloud/cloud.cfg

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+# The top level settings are used as module
+# and system configuration.
+
+# A set of users which may be applied and/or used by various modules
+# when a 'default' entry is found it will reference the 'default_user'
+# from the distro configuration specified below
+users:
+   - default
+
+# If this is set, 'root' will not be able to ssh in and they
+# will get a message to login instead as the above $user (debian)
+disable_root: true
+
+# This will cause the set+update hostname module to not operate (if true)
+preserve_hostname: false
+
+# Example datasource config
+# datasource:
+#    Ec2:
+#      metadata_urls: [ 'blah.com' ]
+#      timeout: 5 # (defaults to 50 seconds)
+#      max_wait: 10 # (defaults to 120 seconds)
+datasource_list: [ NoCloud ]
+
+# The modules that run in the 'init' stage
+cloud_init_modules:
+ - migrator
+ - seed_random
+ - bootcmd
+ - write-files
+ - growpart
+ - resizefs
+ - disk_setup
+ - mounts
+ - set_hostname
+ - update_hostname
+ - update_etc_hosts
+ - ca-certs
+ - rsyslog
+ - users-groups
+ - ssh
+
+# The modules that run in the 'config' stage
+cloud_config_modules:
+# Emit the cloud config ready event
+# this can be used by upstart jobs for 'start on cloud-config'.
+ - emit_upstart
+ - ssh-import-id
+ - locale
+ - set-passwords
+ - grub-dpkg
+ - apt-pipelining
+ - apt-configure
+ - ntp
+ - timezone
+ - disable-ec2-metadata
+ - runcmd
+ - byobu
+
+# The modules that run in the 'final' stage
+cloud_final_modules:
+ - package-update-upgrade-install
+ - fan
+ - puppet
+ - chef
+ - salt-minion
+ - mcollective
+ - rightscale_userdata
+ - scripts-vendor
+ - scripts-per-once
+ - scripts-per-boot
+ - scripts-per-instance
+ - scripts-user
+ - ssh-authkey-fingerprints
+ - keys-to-console
+ - phone-home
+ - final-message
+ - power-state-change
+
+# System and/or distro specific settings
+# (not accessible to handlers/transforms)
+system_info:
+   # This will affect which distro class gets used
+   distro: debian
+   # Default user name + that default users groups (if added/used)
+   default_user:
+     name: debian
+     lock_passwd: True
+     gecos: Debian
+     groups: [adm, audio, cdrom, dialout, dip, floppy, netdev, plugdev, sudo, video]
+     sudo: ["ALL=(ALL) NOPASSWD:ALL"]
+     shell: /bin/bash
+   # Other config here will be given to the distro class and/or path classes
+   paths:
+      cloud_dir: /var/lib/cloud/
+      templates_dir: /etc/cloud/templates/
+      upstart_dir: /etc/init/
+   package_mirrors:
+     - arches: [default]
+       failsafe:
+         primary: http://deb.debian.org/debian
+         security: http://security.debian.org/
+   ssh_svcname: ssh

files/etc/cron.d/aprs-pigate

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+* * * * * pi /home/pi/dw-start-cron.sh >/dev/null 2>&1

files/home/pi/dw-start-cron.sh

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+#!/bin/bash
+
+# Pre-modified version of dw-start.sh for headless CLI setup.
+# Original: https://github.com/wb2osz/direwolf/blob/master/dw-start.sh
+# Changes:
+# - remove RUNMODE to force CLI always (helps for testing), remove GUI function
+# - set DWCMD for CLI mode with RTL-SDR, create a separate file to pass to screen to work with Buster
+# - remove initial sleep wait since we don't care about desktop
+# - added logs to CLI command that pipe to LOGFILE instead of ignored.
+
+# Run this from crontab periodically to start up
+# Dire Wolf automatically.
+
+# Location of the direwolf binary.  Depends on $PATH as shown.
+# change this if you want to use some other specific location.
+# e.g.  DIREWOLF="/usr/local/bin/direwolf"
+DIREWOLF="direwolf"
+
+DWCMD="/home/pi/rtl-dw-start.sh"
+
+# Where will logs go - needs to be writable by non-root users
+LOGFILE=/var/tmp/dw-start.log
+
+#-------------------------------------
+# Main functions of the script
+#-------------------------------------
+function CLI {
+   SCREEN=`which screen`
+   if [ $? -ne 0 ]; then
+      echo -e "Error: screen is not installed but is required for CLI mode.  Aborting"
+      echo -e "Error: screen is not installed but is required for CLI mode.  Aborting" >> $LOGFILE
+      exit 1
+   fi
+
+   echo "Direwolf in CLI mode start up"
+   echo "Direwolf in CLI mode start up" >> $LOGFILE
+
+   # Screen commands
+   #  -d m :: starts the command in detached mode
+   #  -S   :: name the session
+   $SCREEN -L -d -m -S direwolf $DWCMD >> $LOGFILE
+   $SCREEN -list direwolf
+   $SCREEN -list direwolf >> $LOGFILE
+
+   echo "-----------------------"
+   echo "-----------------------" >> $LOGFILE
+}
+
+# -----------------------------------------------------------
+# Main Script start
+# -----------------------------------------------------------
+
+# When running from cron, we have a very minimal environment
+# including PATH=/usr/bin:/bin.
+#
+export PATH=/usr/local/bin:$PATH
+
+#
+# Nothing to do if Direwolf is already running.
+#
+a=`ps ax | grep direwolf | grep -vi -e bash -e screen -e grep | awk '{print $1}'`
+if [ -n "$a" ]
+then
+  #date >> /tmp/dw-start.log
+  #echo "Direwolf already running." >> $LOGFILE
+  exit
+fi
+
+# Main execution of the script
+echo "Direwolf not running, starting." >> $LOGFILE
+CLI

files/home/pi/rtl-dw-start.sh

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+#!/bin/bash
+
+rtl_fm -f 144.39M - | direwolf -c /home/pi/direwolf/sdr.conf -r 24000 -D 1 -

packer/aprs-pigate.json

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+{
+    "variables": {},
+    "builders": [
+        {
+            "type": "arm-image",
+            "iso_url": "http://downloads.raspberrypi.org/raspios_lite_armhf/images/raspios_lite_armhf-2020-05-28/2020-05-27-raspios-buster-lite-armhf.zip",
+            "iso_checksum_type": "sha256",
+            "iso_checksum": "f5786604be4b41e292c5b3c711e2efa64b25a5b51869ea8313d58da0b46afc64",
+            "last_partition_extra_size": 524288000
+        }
+    ],
+    "provisioners": [
+        {
+            "type": "shell",
+            "inline": [
+                "touch /boot/ssh"
+            ]
+        },
+        {
+            "type": "shell",
+            "script": "packer/base.sh"
+        },
+        {
+            "type": "file",
+            "source": "files/etc/cloud/cloud.cfg",
+            "destination": "/etc/cloud/cloud.cfg"
+        },
+        {
+            "type": "shell",
+            "script": "packer/rtl-sdr.sh"
+        },
+        {
+            "type": "file",
+            "source": "files/home/pi/dw-start-cron.sh",
+            "destination": "/home/pi/dw-start-cron.sh"
+        },
+        {
+            "type": "file",
+            "source": "files/home/pi/rtl-dw-start.sh",
+            "destination": "/home/pi/rtl-dw-start.sh"
+        },
+        {
+            "type": "file",
+            "source": "files/etc/cron.d/aprs-pigate",
+            "destination": "/etc/cron.d/aprs-pigate"
+        },
+        {
+            "type": "shell",
+            "inline": [
+                "chmod +x /home/pi/dw-start-cron.sh",
+                "chmod +x /home/pi/rtl-dw-start.sh",
+                "chown -R pi:pi /home/pi"
+            ]
+        },
+        {
+            "type": "file",
+            "source": "files/boot/user-data.yaml",
+            "destination": "/boot/user-data"
+        }
+    ]
+}

packer/base.sh

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+#!/bin/bash
+set -x
+
+# Locales, uncomment if user-data didn't fix these
+export LANGUAGE=en_US.UTF-8; export LANG=en_US.UTF-8; export LC_ALL=en_US.UTF-8;
+
+# Set locale to en_US.UTF-8
+cp /etc/locale.gen /etc/locale.gen.dist
+sed -i -e "/^[^#]/s/^/#/" -e "/en_US.UTF-8/s/^#//" /etc/locale.gen
+
+# American wifi
+cp /var/cache/debconf/config.dat /var/cache/debconf/config.dat.dist
+sed -i \
+        -e "s/Value: en_GB.UTF-8/Value: en_US.UTF-8/" \
+        -e "s/ locales = en_GB.UTF-8/ locales = en_US.UTF-8/" \
+    /var/cache/debconf/config.dat
+
+locale-gen
+update-locale LANG=en_US.UTF-8
+
+# Update & Install packages
+apt-get update -qq
+apt-get upgrade -qy
+apt-get install -qy --no-install-recommends \
+    vim \
+    git \
+    wget \
+    curl \
+    unzip \
+    cloud-init \
+    ssh-import-id \
+    screen
+apt-get autoremove -y
+
+# Link cloud-init config to VFAT /boot partition
+mkdir -p /var/lib/cloud/seed/nocloud-net
+ln -s /boot/user-data /var/lib/cloud/seed/nocloud-net/user-data
+ln -s /boot/meta-data /var/lib/cloud/seed/nocloud-net/meta-data
+ln -s /boot/network-config /var/lib/cloud/seed/nocloud-net/network-config

packer/rtl-sdr.sh

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+#!/bin/bash
+set -x
+
+# Install packages
+apt-get install -qy \
+    build-essential \
+    cmake \
+    libasound2-dev \
+    libusb-1.0-0-dev
+
+# Direwolf Setup
+cd /home/pi
+git clone https://github.com/wb2osz/direwolf.git
+cd direwolf
+make
+make install
+make install-conf
+
+# RTL-SDR Library
+cd /home/pi
+git clone git://git.osmocom.org/rtl-sdr.git
+cd rtl-sdr
+mkdir build
+cd build
+cmake ../ -DINSTALL_UDEV_RULES=ON -DDETACH_KERNEL_DRIVER=ON
+make
+make install
+ldconfig