X-Git-Url: https://zdv2.bktei.com/gitweb/EVA-2020-02.git/blobdiff_plain/3f9df02d779f83f3a6a564d667029cffcf6ce7e6..ea4821d62b4a15c579da5941090f8c5df30c2a17:/doc/location/README.html?ds=inline diff --git a/doc/location/README.html b/doc/location/README.html index 0fb1b6a..69a4789 100644 --- a/doc/location/README.html +++ b/doc/location/README.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Ninfacyzga-01 Manual @@ -234,24 +234,24 @@ for the JavaScript code in this tag.

Table of Contents

-
-

1 Location Logging

+
+

1 Location Logging

This document was created by Steven Baltakatei Sandoval on -<2020-06-29 Mon 12:14> under a Creative Commons BY-SA 4.0 license. It -was updated by Steven Baltakatei Sandoval on <2020-06-29 Mon 22:06>. +2020-06-29T12:14Z under a Creative Commons BY-SA 4.0 license. It +was updated by Steven Baltakatei Sandoval on 2020-06-30T19:44Z

-
-

1.1 Narrative

+
+

1.1 Narrative

Ninfacyzga-01 records (logs) its position in time and space using a @@ -282,23 +282,23 @@ before being processed and written to disk.

-
-

1.2 Description

+
+

1.2 Description

-
-

1.2.1 Hardware

+
+

1.2.1 Hardware

    -
  1. Raspberry Pi Zero W
    +
  2. Raspberry Pi Zero W

    See the OEM webpage for this product.

  3. -
  4. PiZ UpTime 2.0
    +
  5. PiZ UpTime 2.0

    See the OEM webpage for this product. @@ -307,8 +307,8 @@ See the OEM webpage for

-
-

1.2.2 Software

+
+

1.2.2 Software

bkgpslog : The bash script that performs the location data @@ -349,7 +349,7 @@ should be copied to $HOME/.local/bin.

    -
  1. Narrative
    +
  2. Narrative

    bkgpslog populates a 60-second buffer with NMEA data from gpsd via @@ -362,28 +362,28 @@ encrypted with age, and then written to disk.

-
-

1.2.3 Output

+
+

1.2.3 Output

    -
  1. File Formats
    +
  2. File Formats
      -
    1. NMEA
      +
    2. NMEA

      See the Wikipedia page for this.

    3. -
    4. GPX
      +
    5. GPX

      See the Wikipedia page for this. WGS84 is the datum used.

    6. -
    7. KML
      +
    8. KML

      See the Wikipedia page for this. WGS84 is the datum used. @@ -392,7 +392,7 @@ See the Wikipedi

  3. -
  4. Encryption Method
    +
  5. Encryption Method

    Files produced by the bkgpslog script are encrypted against a set of @@ -421,7 +421,7 @@ Help information for age is available by running $ age --help

      -
    1. Encryption Commands
      +
    2. Encryption Commands

      Files may be encrypted to several recipients using a command similar to: @@ -442,7 +442,7 @@ bech32-formatted public key strings.

    3. -
    4. Decryption Commands
      +
    5. Decryption Commands

      Files may be decrypted using a command similar to: @@ -462,12 +462,12 @@ The version of age used to perform the encryption

-
-

1.3 Operating Procedures

+
+

1.3 Operating Procedures

-
-

1.3.1 Initial Startup

+
+

1.3.1 Initial Startup

See OEM (Ozzmaker) quickstart guide for the BerryGPS-IMU. @@ -475,7 +475,7 @@ See OEM (Ozzmaker) -

  • Physical Setup
    +
  • Physical Setup

    BerryGPS-IMU must be electrically connected to the correct pins on the @@ -490,9 +490,9 @@ possible.

  • -
  • Software Setup
    +
  • Software Setup
      -
    1. Install Executables
      +
    2. Install Executables

      Install Raspbian 10 Buster onto an SD card image. See the Raspberry Pi @@ -523,9 +523,55 @@ Linux) in $HOME/.local/bin.

    3. -
    4. Automatic Start Configuration
      +
    5. Disable Swap File

      +Since standard Raspbian 10 (Buster) install involves copying +unencrypted file system image to SD card which is mounted by the +Raspberry Pi, system memory may be written to disk in the form of a +Swap file as described here. In order to reduce the chance that +location log data is ever written to disk, swap file functionality +must be disabled1. +

      + +

      +Raspbian 10 uses dphys-swapfile to manage a swap file. It may be +disabled persistently2 by running +the following command: +

      + +
      +sudo systemctl disable dphys-swapfile.service
      +
      +
      + +

      +To view the status of the swap file in Raspbian 10, run free -m: +

      + +
      +pi@ninfacyzga-01:~$ free -m
      +          total    used    free  shared  buff/cache   available
      +Mem:        432      86      36      21         309         268
      +Swap:        99       0      99
      +
      + +

      +After disabling the swap file and rebooting: +

      + +
      +pi@ninfacyzga-01:~$ free -m
      +          total    used    free  shared  buff/cache   available
      +Mem:        432      89     214       3         128         289
      +Swap:         0       0       0
      +
      +
      +
    6. + +
    7. Automatic Start Configuration
      +
      +

      Edit the user cron job list with $ crontab -e to add the following lines:

      @@ -563,7 +609,7 @@ may resemble:

      The age1z2...qkv6p is an age public key string. Please see the -Key Generation section for an explanation. +Key Generation section for an explanation.

      @@ -581,8 +627,8 @@ The options are:

    8. -
    9. Log Transfer Configuration
      -
      +
    10. Log Transfer Configuration
      +

      Log files may be shared to other machines via syncthing. See this manual for how to set up a shared folder and add Ninfacyzga-01 as a @@ -598,15 +644,15 @@ of this document.

    11. -
    12. Key Generation
      -
      +
    13. Key Generation
      +

      An age encryption key may be generated like so:

       $ umask          # Gets current umask
       0022             # Note: This is the default umask for Raspbian 10
      -$ umask 066      # Sets umask so key.txt will have no permissions except for owner (you)
      +$ umask 066      # So key.txt will have no perms except for owner (you)
       $ umask          # Confirm umask set to 066
       0066
       $ age-keygen > key.txt
      @@ -642,8 +688,8 @@ be readable, writeable, or executable to anyone except the owner
       
  • -
    -

    1.3.2 Normal Startup

    +
    +

    1.3.2 Normal Startup

    Turn on Ninfacyzga-01 by supplying 5VDC power to the Raspberry Pi. No @@ -651,8 +697,8 @@ further interaction should be required.

    -
    -

    1.3.3 Normal Operation

    +
    +

    1.3.3 Normal Operation

    No interaction beyond continually supplying approximately 100mA of @@ -661,14 +707,14 @@ is required.

      -
    1. Log Transfer
      +
    2. Log Transfer

      Log files may be transferred by use of syncthing shared folders.

    3. -
    4. Automatic Updates
      +
    5. Automatic Updates

      The automatic-upgrades package, if installed, should automatically @@ -678,8 +724,8 @@ install security patches to packages installed via apt.

    -
    -

    1.3.4 Normal Shutdown

    +
    +

    1.3.4 Normal Shutdown

    The system may be shutdown via SSH by running: @@ -692,8 +738,8 @@ $ sudo shutdown -r 0

    -
    -

    1.3.5 Unscheduled Shutdown

    +
    +

    1.3.5 Unscheduled Shutdown

    Ninfacyzga-01 as described and setup should tolerate unscheduled power @@ -702,8 +748,8 @@ seconds worth of location data may be lost.

    -
    -

    1.3.6 End of Life Disposal

    +
    +

    1.3.6 End of Life Disposal

    LiPo batteries used by the PiZ Uptime 2.0 module should be disposed of @@ -726,11 +772,27 @@ lead-free solder.

    +
    -

    Date: 2020-06-29T22:16Z

    Author: Steven Baltakatei Sandoval

    -

    Created: 2020-06-29 Mon 22:27

    +

    Created: 2020-06-30 Tue 19:45

    Validate