Trans: Latin prefix implying "across" or "Beyond", often used in gender nonconforming situations – Scend: Archaic word describing a strong "surge" or "wave", originating with 15th century english sailors – Survival: 15th century english compound word describing an existence only worth transcending.

Category: Uncategorized (Page 1 of 4)

clipi CLI!

Find this project on my github here!

...post updated 06/22/2020
...and again 07/14/2020

clipi:

An efficient toolset for Pi devices

Emulate, organize, burn, manage a variety of distributions for Raspberry Pi.


Choose your own adventure....

Emulate:
clipi virtualizes many common sbc operating systems with QEMU, and can play with both 32 bit and 64 bit operating systems.

  • Select from any of the included distributions (or add your own to /sources.toml!) and clipi will handle the rest.

Organize:
clipi builds and maintains organized directories for each OS as well a persistent & convenient .qcow2 QEMU disk image.

  • Too many huge source .img files and archives? clipi cleans up after itself under the Utilities... menu.
  • additional organizational & gcc compilation methods are available in /kernel.py

Write:
clipi burns emulations to external disks! Just insert a sd card or disk and follow the friendly prompts. All files, /home, guest directories are written out.

  • Need to pre-configure (or double check) wifi? Add your ssid and password to /wpa_supplicant.conf and copy the file to /boot in the freshly burned disk.
  • Need pre-enabled ssh? copy /ssh to /boot too.
  • clipi provides options for writing from an emulation's .qcow2 file via qemu...
  • ...as well as from the source's raw image file with the verbatim argument

Manage:
clipi can find the addresses of all the Raspberry Pi devices on your local network.

  • Need to do this a lot? clipi can install itself as a Bash alias (option under the Utilities... menu, fire it up whenever you want.

Shortcuts:

Shortcuts & configuration arguments can be passed to clipi as a .toml (or yaml) file.

  • Shortcut files access clipi's tools in a similar fashion to the interactive menu:
# <shortcut>.toml
# you can access the same tools and functions visible in the interactive menu like so:
'Burn a bootable disk image' = true  
# same as selecting in the interactive cli
'image' = 'octoprint'
'target_disk' = 'sdc'  
  • clipi exposes many features only accessible via configuration file arguments, such as distribution options and emulation settings.
# <shortcut>.toml
# important qemu arguments can be provided via a shortcut file like so:
'kernel' = "bin/ddebian/vmlinuz-4.19.0-9-arm64"
'initrd' = "bin/ddebian/initrd.img-4.19.0-9-arm64"
# qemu arguments like these use familiar qemu lexicon:
'M' = "virt" 
'm' = "2048"
# default values are be edited the same way:
'cpu' = "cortex-a53"
'qcow_size' = "+8G"
'append' = '"rw root=/dev/vda2 console=ttyAMA0 rootwait fsck.repair=yes memtest=1"'
# extra arguments can be passed too:
'**args' = " -device virtio-blk-device,drive=hd-root \\
             -netdev user,id=net0 -no-reboot \\
             -monitor stdio \\
             -device virtio-net-device,netdev=net0 "
  • Supply a shortcut file like so:
    python3 clipi.py etc/find_pi.toml

  • take a look in /etc for some shortcut examples and default values

# clone:
git clone https://github.com/Jesssullivan/clipi
cd clipi

# preheat:
pip3 install -r requirements.txt
# (or pip install -r requirements.txt)

# begin cooking some Pi:
python3 clipi.py

Parse fdisk -l in Python

fdisk -l has got to be one of the more common disk-related commands one might use while fussing about with raw disk images. The fdisk utility is ubiquitous across linux distributions (also brew install gptfdisk and brew cask install gdisk, supposedly). The -l argument provides a quick look raw sector & file system info. Figuring out the Start, End, Sectors, Size, Id, Format of a disk image's contents without needing to mount it and start lurking around is handy, just the sort of thing one might want to do with Python. Lets write a function to get these attributes into a dictionary- here's mine:

import subprocess
import re

def fdisk(image):

    #  `image`, a .img disk image:
    cmd = str('fdisk -l ' + image)

    # read fdisk output- everything `cmd` would otherwise print to your console on stdout
    # is instead piped into `proc`.
    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)

    # the raw stuff from stdout is not parseable as is, so we read into a string:
    result = proc.stdout.read().__str__()

    # figure out what type we should iterate with when looking via file / part contained within image.  I have no idea if anything besides .img will work- YMMV, but YOLO xD
    if '.iso' in result:
        iter = '.iso'
    if '.qcow2' in result:
        iter = '.qcow2'
    else:  
        iter = '.img'

    # chop up fdisk results by file / partition-
    # the resulting `parts` are equivalent to fdisk "rows" in the shell
    parts = re.findall(r'' + iter + r'\d', result)

    # dictionary `disk` contains each "row" from `parts`:
    disk = {}
    for p in parts:
        # sub dictionary 'part' contains the handy fdisk output values:
        part = {}
        # get just the number words with regex sauce:
        line = result.split(p)[1]
        words = re.split(r'\s+', line)
        # place each word into 'part':
        part['Start'] = words[1]
        part['End'] = words[2]
        part['Sectors'] = words[3]
        part['Size'] = words[4]
        part['Id'] = words[5]
        part['Format'] = words[6].split('\\n')[0]
        # stick this part into 'disk', move onto next disk part:
        disk[p] = part
    return disk

Dover’s Enclosure

A stylish demo enclosure for the Xilinx / Digilent Genesys 2 with a display panel.

Check out what Dover Microsystems is up to here:
https://www.dovermicrosystems.com/

Prototyping & production @ the D&M Makerspace- see what else we're up to:
https://makerspace.plymouthcreate.net/

Electronics:

FPGA- Digilent Xilinx Genesys 2 FPGA Reference

The display and HDMI driver board from pimoroni-
The sketch for panel dimensions are shared over here too

BOM for version 6:

You can find the V6 interactive Fusion 360 model over here

...additional V6 svg, stl layouts on tinkercad

Materials:

Size Type
12"x12" 1/4" (6.35mm) clear acrylic sheet
12"x12" 3mm clear acrylic sheet
12"x12" 3mm colored acrylic sheet
~45 grams printer plastic (filament or resin)

Hardware:

Qty Size
3 m3x8
3 m3x18
1 m3x20
7 m3 nut
2 m2x14
2 m2x10
4 m2 nut

What is this thing? Some words from founding scientist @gregsgit:

*"We use the FPGA to prototype / emulate a "Soft Core" CPU with and without Dover's IP (logic) called CoreGuard.
An FPGA can simulate (sometimes called "emulate") logical circuits, and is reprogrammable. So you can design circuitry that eventually will be fabricated in silicon, but you can work out bugs and try different designs using the FPGA "fabric".*

*For demos, we synthesize to the Xilinx FPGA: a design for a RISC-V CPU, a simple UART (serial interface), an interface to the on-board DDR memory and flash memory, and a simple video output. We put some software in the on-board flash, then boot a working RISC-V system. We'll show how the software can be attacked, using I/O over the serial port to mimic what would typically take place over a network connection. Next, we show the same SoC (CPU + UART + memory) with CoreGuard logic added in. We run the same software and then show that the same attack is blocked by CoreGuard. We also use the FPGA to emulate the Arm CPU that we are interfacing with for our NXP customer."*

Install Adobe Applications on AWS WorkSpaces

By default, the browser based authentication used by Adobe’s Creative Cloud installers will fail on AWS WorkSpace instances. Neither the installer nor Windows provide much in the way of useful error messages- here is how to do it!

Open Server Manager. Under “Local Server”, open the “Internet Explorer Enhanced Security Configuration”- *(mercy!)* - and turn it off.

Good Lord

##### Tada! The sign on handoff from the installer→Browser→ back to installer will now work fine. xD

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