wk87 is a dangerous topic for me, i've been through a lot. I apologise for what I am about to inflict on this network over the coming week.

Most incompetent co-worker, candidate 1, "T".

T was an embedded C developer who talked openly about how he's been writing code since he was 14, knew all the C system libraries and functions like the back of his hand. For the most part, he did ... but not how to actually use them, as (based on his shocking ... well everything) he was inflicted by some sort of brain disorder not yet fully understood by medical science. Some highlights:

- Myself and the CTO spent 4 days teaching him what a circle buffer was and how to build one.
- His final circle buffer implementation had about 3 times as much code as he actually needed.
- When the code was running too slowly on the device, we didn't try find any performance improvements, or debug anything to see if there was anything taking too long. No not with T, T immediately blamed TCP for being inefficient.
- After he left we found a file called "TCP-Light" in his projects folder.
- He accused the CTO of having "violent tendencies" because he was playing with a marker tossing it up in the air and catching it.
- He once managed to leave his bank statements, jumper and TROUSERS in the bathroom and didn't realise until a building wide email went out.
- He once .... no hang on, seriously his fucking trousers, how?
- He accused us all of being fascists because we gave out to him for not driving with his glasses, despite the fact his license says he needs to (blind as a bat).

... why were his trousers off in the first place? and how do you forget ... or miss the pile of clothes and letters in a small bathroom.

Moving on, eventually he was fired, but the most depressing thing of all about T, is that he might not even be top of my list.

Tune in later for more practiceSafeHex's most incompetent co-worker!!!

Just called Asus for a problem with my router, went to send them my systemlog.txt for analysis

"Oh we don't have an email you can send that to"

Me: "(me calling bullshit) let me talk to the tech team.."

*Get transferred*

"Hello this is the supervisor"

Me: "fml"

"Ya we don't have an email you can send that to, but we can use a different departments verification services to get a file from you, has to be a picture though"

Me: "What? I got a .txt file here, I just want to get it to you, does it really have to be a picture?"

"Has to be a picture or a PDF, we can't take txt files"

Me: "fkin.. srsly? Fine"

I can't believe Asus's system srsly. I think it's for virus protection, but viruses can be embedded in both picture formats and PDF, but not in txt. So wtf is going on lol

This is why my embedded system keeps crashing

Been reviewing ALOT of client code and supplier’s lately. I just want to sit in the corner and cry.

Somewhere along the line the education system has failed a generation of software engineers.

I am an embedded c programmer, so I’m pretty low level but I have worked up and down and across the abstractions in the industry. The high level guys I think don’t make these same mistakes due to the stuff they learn in CS courses regarding OOD.. in reference how to properly architect software in a modular way.

I think it may be that too often the embedded software is written by EEs and not CEs, and due to their curriculum they lack good software architecture design.

Too often I will see huge functions with large blocks of copy pasted code with only difference being a variable name. All stuff that can be turned into tables and iterated thru so the function can be less than 20 lines long in the end which is like a 200% improvement when the function started out as 2000 lines because they decided to hard code everything and not let the code and processor do what it’s good at.

Arguments of performance are moot at this point, I’m well aware of constraints and this is not one of them that is affected.

The problem I have is the trying to take their code in and understand what’s its trying todo, and todo that you must scan up and down HUGE sections of the code, even 10k+ of line in one file because their design was not to even use multiple files!

Does their code function yes .. does it work? Yes.. the problem is readability, maintainability. Completely non existent.

I see it soo often I almost begin to second guess my self and think .. am I the crazy one here? No. And it’s not their fault, it’s the education system. They weren’t taught it so they think this is just what programmers do.. hugely mundane copy paste of words and change a little things here and there and done. NO actual software engineers architecture systems and write code in a way so they do it in the most laziest, way possible. Not how these folks do it.. it’s like all they know are if statements and switch statements and everything else is unneeded.. fuck structures and shit just hard code it all... explicitly write everything let’s not be smart about anything.

I know I’ve said it before but with covid and winning so much more buisness did to competition going under I never got around to doing my YouTube channel and web series of how I believe software should be taught across the board.. it’s more than just syntax it’s a way of thinking.. a specific way of architecting any software embedded or high level.

Anyway rant off had to get that off my chest, literally want to sit in the corner and cry this weekend at the horrible code I’m reviewing and it just constantly keeps happening. Over and over and over. The more people I bring on or acquire projects it’s like fuck me wtf is this shit!!! Take some pride in the code you write!

The guy where I can only shake my head when I see his code, and he is really proud of if implementations, while he

- doesn't care about warnings

- breaks builds and doesn't care

- doesn't care about code styles and indents in a very column based way

- adds tons of comments to his code, mostly hard to understand, and sometimes that much you can hardly find the code

- implements a tokenizer where you have to inherit from its interface (Why would I wanna implement whole functions for a tokenizer and not just use it in place where needed? How do I use two of those in one class?)

- implement a "generic" state machine base class with fixed lengths array of 3 events and 3 strings (Why would I need events and strings hardcoded in a "generic" state machine? Why a maximum of 3?)

- once delivered a software without the needed runtime components, so the whole system (embedded device) wasn't working properly and only by chance missed the point of disabling update mechanisms

- make your ears bleed about his big inventions whenever he sees you, no matter how often he already told you about that blazing new feature

Working in the embedded systems industry for most of my life, I can tell you methodical testing by the software engineers is significantly lacking. Compared to the higher level language development with unit tests and etc, something i think the higher level abstracted industry actually hit out the of park successfully.

The culture around unit testing and testing in general is far superior in java and the rest.

Down here in embedded all too often I hear “well it worked on my setup... it worked at my desk”.. or Oh I forgot to test that part.. or I didn’t think that perticular value could get passed in... etc I’ve heard it all. Then I’ve also heard, you can’t do TTD or unit tests like high level on embedded... HORSESHIT!

You most definitely can! This book is a great book to prove a point or use as confirmation you are doing things correctly. My history with this book was I gonna as doing my own technique of unit testing based on my experience in the high level. Was it perfect no but I caught much more than if I hadn’t done the testing. THEN I found this book, and was like ohh cool I’m glad I’m on the right thought process because essentially what they were doing in the book is what I was doing just slightly less structured and missing a few things.

I’ve seen coworkers immediately think it’s impossible to utilize host testing .. wrong.

Come to find out most the of problems actually are related to lack of abstraction or for thought out into software system design by many lone wolf embedded developers.. either being alone, or not having to think about repercussions of writing direct register writes in application or creating 1500 line “main functions” because their perception is “main = application”. (Not everyone is like this) but it seems to be related to the EEs writing code ( they don’t know wha the CS knows) and CS writing over abstraction and won’t fit on Embedded... then you have CEs that either get both sides or don’t.. the ones to understand the low level need but also get high level concepts and pariadigms and adapt them to low level requirements BOOM those are the special folks.

ANYway..the book is great because it’s a great beginner book for those embedded folks who don’t understand what TDD is or Unit testing and think they can’t do it because they are embedded. So all they do is AdHoc testing on the fly no recording results no concluding data very quick spot check and done....

If your embedded software engineers say they can’t unit test or do TDD or anything other than AdHoc Testing...Throw the book at them and say you want the unit test results report by next week Friday and walk away.

Lol

Our team is currently working with an Excel document that uses visual basic to talk to an embedded system. We're talking reading memory locations in Excel.

!Rant

Designer decide to have a meeting with stakeholders about UX/UI workflow for control panel of our new embedded system (no framework, no library, gui is bit per bit rendered on frame buffer).
A week later, still nothing on my table, not a mail, not a call. Meanwhile I wrote a framework, the control system, renderer, and messaging queues between tasks.
Wrote some widgets, a layout system and a view swtching mechanism, and a separate stack control to use a "back" button.

Now I am stuck for I do not know what should happen when clicking on various (non obvious) items on the touchscreen.
Fine, I'll ask the designer.

"Oh, I will write the workflow next week" (ETA time, 2 weeks. Seriously? You take a week to draw on Adobe Illustrator 20 screenshot with text and I have another week to write it from scratch in C?)
Ok, while you write it, just tell me what should happen when I click an active item.
"Well, we didn't talk about that. We just decided the colour of the icons on the screen..."
For fuck sake...

Well done, T-Mobile!

They have an iOS app to handle contract stuff. That app integrates their shop system via an internal browser.
The shop notifies me, that the used browser is not supported by the shop...

Oh and the browser is an embedded safari on iOS 12.

Today was a day at work that I felt like I made a significant contribution. It was not a lot of code. Actually it was a difference of 3 characters.

I am developing an industrial server so that my employer can provide access to their machines to enterprise industrial systems. You know, the big boys toys. Probably in fucking java...

Anyway, I am putting this server on an embedded system. So naturally you want to see how much serving a server can serve. In this case the device in more processor starved than memory starved. So I bumped up the speed of the serving from 1000mS to 100mS per sample. This caused the processor to jump from 8% of one core (as read from top) to 70%. Okay, 10x more sampling then 10x approx cpu usage. That is good. I know some basic metrics for a certain amount of data for a couple of different sampling rates.

Now, I realized this really was not that much activity for this processor. I mean, it didn't seem to me that it "took much" to see a large increase of processor usage. So I started wondering about another process on the system that was eating 60 to 70 % all the time. I know it updated a screen that showed some not often needed data from its display among controlling things. Most of the time it will be in a cabinet hidden from the world. I started looking at this code and figured out where the display code was being called.

This is where it gets interesting. I didn't write this code. Another really good programmer I work with wrote this. It also seemed to be pretty standard approach. It had a timer that fired an event every 50mS. This is 20 times per second. So 20 fps if you will. I thought, What would happen if I changed this to 250mS? So I did. It dropped the processor usage to 15%! WTF?! I showed another programmer: WTF?! I showed the guy who wrote it: WTF?! I asked what does it do? He said all it does it update the display. He said: Lets take to 1000mS! I was hesitant, but okay. It dropped to 5%!

What is funny is several people all said: This is running kinda hot. It really shouldn't be this hot.

Don't assume, if you have a hunch, play with it if its safe to do so. You might just shave off 55 to 60 % cpu usage on your system.

So the code I ended up changing: "50" to "1000".

Pushed code remotely and told a teammate to run it on the target hardware. He then told me he might of blown up $6000 worth of equipment. Then he says "Never mind everything works."

World record for biggest heart attack?

Okay, first rant here.
Spend most of my morning searching for a js file that was supposed to build some graphs in a report page in this legacy system (still in active development) just to find it embedded inside a random .php file being included inside a wall of if-elses (that shit has around 100 lines) on the index.php (that somehow manages to route all the nonsense that's going on there).. was it really that difficult to make it a proper .js file? and actually import it on the page that is using it? c'mon...

Created a batch file to modify some system files on our embedded system.

Accidentally double clicked it in my development main machine :(

Man, fm fucking l

First year: intro to programming, basic data structures and algos, parallel programming, databases and a project to finish it. Homework should be kept track of via some version control. Should also be some calculus and linear algebra.

Second year:
Introduce more complex subjects such as programming paradigms, compilers and language theory, low level programming + logic design + basic processor design, logic for system verification, statistics and graph theory. Should also be a project with a company.

Year three:
Advanced algos, datastructures and algorithm analysis. Intro to Computer and data security. Optional courses in graphics programming, machine learning, compilers and automata, embedded systems etc. ends with a big project that goes in depth into a CS subject, not a regular software project in java basically.

Prototyping a new operating system for Smart Mini Displays (Embedded Linux System) that can run even on low-end ARM motherboards.

Many people here rant about the dependency hell (rightly so). I'm doing systems programming for quite some time now and it changed my view on what I consider a dependency.
When you build an application you usually have a system you target and some libraries you use that you consider dependencies.
So the system is basically also a dependency (which is abstracted away in the best case by a framework).
What many people forget are standard libraries and runtimes. Things like strlen, memcpy and so on are not available on many smaller systems but you can provide implementations of them easily. Things like malloc are much harder to provide. On some system there is no heap where you could dynamically allocate from so you have to add some static memory to your application and mimic malloc allocating chunks from this static memory. Sometimes you have a heap but you need to acquire the rights to use it first. malloc doesn't provide an interface for this. It just takes it. So you have to acquire the rights and bring them magically to malloc without the actual application code noticing. So even using only the C standard library or the POSIX API can be a hard to satisfy dependency on some systems. Things like the C++ standard library or the Go runtime are often completely unavailable or only rudimentary.
For those of you aiming to write highly portable embedded applications please keep in mind:
- anything except the bare language features is a dependency
- require small and highly abstracted interfaces, e.g. instead of malloc require a pointer and a size to be given to you application instead of your application taking it
- document your ABI well because that's what many people are porting against (and it makes it easier to interface with other languages)

Arguing with a co worker.... he is writing a serial data plotter, and wants me to send the data as text. I’m like ugh no I’m not wasting bandwidth for text data, you are getting it as binary, as my embedded system has a lot of other stuff todo than send debug info, so the quicker I get the data to you the better... plus his program is running on a pc there is no issue regarding resources handling binary data.

He tells me I’m am wrong, and is trying to defend his stance, then all the electrical engineers and other software engineers all stand up and said why in the hell would it be faster to send text than binary? He has no response.

So I work on Embedded System. While working on my project I was drinking water from bottle.

And kept it near my laptop.

Just there all my circuits were open. Connected via USB with my laptop.
And while working I tried grab the bottle and guess what?
Yeah, It fell. But thankfully it didn't touch any of my circuits. If it did!!!!

I was frozen on spot.
Phew!!

Yesterday, i had to use neovim for a task on my friend's laptop. There was no WiFi and I couldn't install Emacs. This guy uses Vim a lot. He recently moved to neovim from vim. He had some Ruby codes going. I had to debug some codes(performance issues). I was reluctant to work on it but i had to. After looking at some keybindings and the plugins that guy had written, using vim was pleasure. It was fast. I could shoot up multiple terminals work on that and was instant. I wrote some plugins to indent my code which worked as it's supposed to. I used spacemacs(as it's configured properly) Emacs but there is some load time on spacemacs and there are some issues shooting up multiple spacemacs on terminals. I had just configured and started using prelude which is beautiful Emacs configuration and is fast.
After using neovim that day something hit me that i had blindly had faith in Emacs without using Vim and i use Emacs only for text editing task and terminal. I don't use it for listening music, browser and other task i can always use modern browsers and Spotify for that. Modern browsers and music players are amazing and using those in Emacs there is always a lack of functionality and UI.(modern people don't use those i think and some Emacs users i know use stripped down version of Emacs i.e. microemacs or XEmacs.

I know vi is present by default on every Linux distribution. That keybindings are same as vim and it can be configured so, it is useful for embedded devices and system architecture. I love terminals and love working on tty. That's why i guess i felt instantly tempted to keep on using vim and i loved it's performance. I checked on evil layer before but there are some issues with evil layer in Emacs like it isn't too efficient like vim. I love lisp though and clojure can be edited nicely in Vim.

Is this sin against the church of Emacs? Should i join vi vi vi? I have already dedicated my life on Emacs (check my bio). Am i tempted by the devil?

Today's GDPR-Bullshittery.

So we are using an open source remote update system for updating our embedded devices.
And today we learned that, that system logs ip-adress'. And low and behold mr.GDPR says that is a no no.

So either we completely drops it, finds a new update system and implements it..
Sift through all the source code of the update system "fix" it and recompile it.
Or we setup a Man in the middle attack on ourselves. To mask the ip-adress'.

GDPR encouraging hacking ourselves I fucking love it!

I've chosen system/embedded programming because I liked system programming and did not like anything connected with web, frontend or UI.

So far it seems like it was a good choice. Even though web was not such a clusterfuck before, it was already repulsive.

DOS is not “Disk Operating System”. DOS, aka QDOS, is “Quick and Dirty Operating System”. This is real. Google it.
Similarly, Windows CE is not “Compact Embedded”. It's “Chaotic Evil”.

Saying Java is good because it runs on 3 billion devices is the same like saying mass public transport is good because it carry billions of people.

> Be me
> Programming for an embedded system
> It's not interruptable
> Got ISR Fault (Interrupt Service Register)
> WTF
> Breakpoints are useless
> WTF
> Comment out some lines
> Turns out it goes ISRF Infinite Loop because of the multi dimensional array of strings
> WTF
> Use pointer intead of defining actual size
> Works
> WTF

WTF?

It was in old days when I was working in java and windows systems.

Java and different log4j versions across dependencies caused system not working only on production server.

Turned out some of libraries got log4j embedded and conflicted with other log4j.

It worked in all computers except production one.

Actually that was my main reason to switch my career to python after that dependency hell.

Another one was windows server 2008 tcp connection limit set to 200 or something.
We needed to change registry to get our servers working. After this case we finally managed to convince people to switch to linux.

Anyway any non standard error when you got multiple layers communicate with each other is hard, practice make it easier to solve those problems as your success moment comes faster.

I just had to quit a part time programming job because I couldn't do it. I'm not really sure how I feel, there were alot of factors.

I took an internship about a year back to do some embedded C. I kicked ass and developed a system that really solved alot of problems for the company and so people started giving me "the hard back shelf problems". Like those problems that are really valuable if someone can get it working but not so important that it blocks anything day to day. Totally fair work for an intern, that is both complex and interesting.

When school started I took a part time remote role working on one of these problems. Fast forward to now (few months of remote work at school); i can't handle the stress. If I devote more time to work I fail a test. If I ace a test my work duties go neglected. On top of that my boss misses scheduled calls with me left and right, I even reminded him everyday 3 days before hand once!!!

Naturally I started feeling like I should quit. I was no longer interested in the work from a pure academic view, and emotionally hated doing it. However, since I was a good performer this place offered to interview my little brother!! Fuck, so do I choose my happiness or my brothers. It feels evil to choose myself over my brother. My brother, he's just a freshman so I know his odds are very low of getting an internship this year are low. And the place I worked at had some weight in the name so I could seriously jump start my little bros career. I do know however that if I don't quit that I will fail school, and do it while being miserable.

And so I quite my first remote job, from my first internship. I feel happy about, but also like I let someone down (them?, Me?, BROTHER?).

You may soon have a new operating system from Google to run on your Raspberry Pi. Details are still extremely sparse, the only description on the GitHub page is “Pink + Purple == Fuchsia (a new Operating System)”. But, here’s what we do know:

The new OS, called Fuchsia, will be based on Magenta, which is in turn built on LittleKernel. That means that, surprisingly, Google will not be using a Linux kernel for the new OS but something more like an embedded RTOS. Although Google is targeting embedded systems, the possibility of being able to run it on a desktop has been mentioned, so it may not be too minimalistic.

Google’s Travis Geiselbrecht has named the Raspberry Pi 3 specifically as one system it will run on, and said that it’ll be available soon. But, it seems Google is aiming to make it run on a variety of ARM devices (both 32 bit and 64 bit), as well as 64 bit PCs. This is a direct effort to compete against other commercial embedded operating systems that are currently available, and especially on IoT devices.

is it fair to say linux is the most popular operating system kernel?

i mean, it powers android, the most popular mobile os, chrome os, nearly all servers, raspberry pi’s, embedded devices and linux desktop operating systems. it has the be the most popular kernel, right?

So today (as of 5 min ago) marks a great day for my personal projects! I just got my embedded systems Flash memory driver debugging on my PC in Visual Studio, talking directly to the REAL flash chip, WITHOUT being tied to a embedded target! It's glorious. I can finally debug and write tons of tests without having to worry about the constraints of my embedded system. Ahhh. All the pieces I've needed to build this have slowly come together over weekends, and it feels so good to have this tool in my arsenal now! Great day indeed.

Another case of "couldn't you've told me BEFORE I started working on this?"

I'm making a training in Unity3D for a client, and they want it to integrate with their learning management system (LMS).
I made a simple SCORM package that gets the userID and then uses a custom URL scheme to launch the app with the user data from the LMS.

Tested on multiple platforms, all works perfectly fine.

Than, during a meeting, some says they "can't download it". I ask "which browser are you using?" and he says "I'm using the LMS app."
... the LMS has an APP?

So I start figuring out ways to launch the system default browser from within a app's embedded browser, and nothing so far has worked.
target=_system, nope.
all kinds of weird javascript shenanigans, but the LMS APP browser just blocks everything.
Probably to protect students from malicious software that could be injected in courses, but now I'm stuck trying to find a workaround for this too.

But what sucks the most is that this happened DAYS BEFORE THE DEADLINE!
Well, at least the deadline won't be my problem anymore soon.

Wanted to do a "quick" software update on a test device for our colleagues who test the system

Here I am looking up what led indicators blinking correlates to what hardware error

Embedded development <3

I've been noticing that without any specialization development can become repetitive, as in, a bunch of fancy ways of doing the same CURD operations.

Something that just calls me is low level development, wether it is embedded development (microcontrollers and such) or Linux Kernel and device drivers. I've been polishing my C skills for a while now and started to look into kernel development and uff, is it overwhelming!

I just wanted to see if some of you guys are or had experience in system development and how you got there. Thx!

>Working on code
>Shit works as intended first try, nice
>Goes to play strange bootleg Gameboy Color ROM sent by a friend
>ROM immediately fucking dies
wtf.svg
>Pop emulator's debugger
we're executing from VRAM, stack's firmly embedded in ROM
>why
>Add execution breakpoint to entrypoint of game, restart emulated system (because i'm actually using the legit bios i hacked so it allows null/corrupted games to run)
>Step through everything, everything goes well until all of a sudden we call a function and shit hits the goddamn fan
well we have the culprit
>step through subroutine
if <unused_byte_in_HRAM> != 0 then stackPointer+=32;tryAgain();else return
>***y***
>Realize this is using a bootleg Memory Bank Controller with hard-backed encryption so none of the bytes executed or read as data are the right byte
>Find emulator that'll handle the jank MBC
>read code to try and figure out how it works
if checksumExtendedLogoBlob == some_number then set MBC_Bootleg1 else if checksumExtendedLogoBlob == some_other_number then set MBC_Bootleg2 else if...
>of course
>Spend 10 minutes finding the right bootleg MBC
>code shows 8 possible tables for real bit order based on some value in the cart header
>look for code that gets this value
>not in the header
>not in ANY header in this 1000+ file emulator
>not in any related cpp files???
>get desperate
>email author
>"Delivery failed: email doesn't exist"

fuck me i guess

More network/hardware than dev but anyway: I use OPNsense as a firewall at home on an embedded system. Had everything set up nicely and appearing to be working fine, quite a lot of things set up (static leases, VLANs with various firewall rules etc. - a fair bit of stuff involved). I noticed my remote system was failing to back up to my local one. Turned out port forwarding wasn't fully working (initial packet got through but nothing else). I noticed this at midnight.

Ran an update to see if that helped - nope. Reboot time then! It made its shutdown noises and I waited 15 minutes before giving up (no noises, no ping response). Took SD card out. Copied a fresh install onto it, thus wiping all settings. Booted up fine, set up my internet connection, all good. Proceeded to configure it. Noticed I couldn't access the internet from my PC, but could from the firewall itself. Rebooted the firewall. It didn't come back up. Argh!

Reinstalled AGAIN. Attached a serial cable and it was complaining about something which sounded like it couldn't read the SD card. Tried another. Nope. Looked online (using phone): known issue to do with boot delays.

Gave up and went to bed at this point (4am).

Next day: Installed it in a VM instead. Still no internet from my PC! Another known issue to do with default gateway not being the PPPoE interface. Got into shell, manually changed the default route. Was then able to update to the latest version which fixes the gateway issue. Rebooted the VM. All good.

Put all my settings back in, this time taking a backup afterward.

Only to discover....

....port forwarding wasn't working properly. Back to square 1.

Poked around with some NAT settings (outbound ones), made no difference, undid those changes and suddenly it started working.

WTF? /waves arms in the air

OPNsense folk were very helpful, producing a new build for me to try within a couple of hours of me asking about the problem.

But days like that, I start to question whether I really enjoy technology as much as I thought I did...

My work product: Or why I learned to get twitchy around Java...

I maintain a Java based test system, that tests a raster image processor. The client is a Java swing project that contains CORBA bindings to the internal API of the raster image processor. It also has custom written UI elements and duplicated functionality that became available in later versions of Java, but because some of the third party tools we use don't work with later versions of Java for some reason, it's not possible to upgrade Java to gain things as simple as recursive directory deletion, yes the version of Java we have to use does not support something as simple as that and custom code had to be written to support it.

Because of the requirement to build the API bindings along with the client the whole application must be built with the raster image processor build chain, which is a heavily customised jam build system. So an ant task calls out to execute a jam task and jam does about 90% of the heavy lifting.

In addition to the Java code there's code for interpreting PostScript files, as these can be used to alter the behaviour of the raster image processor during testing.

As if that weren't enough, there's a beanshell interface to allow users to script the test system, but none of the users know Java well enough to feel confident writing interpreted Java scripts (and that's too close to JavaScript for my comfort). I once tried swapping this out for the Rhino JavaScript interpreter and got all the verbal support in the world but no developer time to design an API that'd work for all the departments.

The server isn't much better though. It's a tomcat based application that was written by someone who had never built a tomcat application before, or any web application for that matter and uses raw SQL strings instead of an orm, it doesn't use MVC in any way, and insane amount of functionality is dumped into the jsp files.

It too interacts with a raster image processor to create difference masks of the output, running PostScript as needed. It spawns off multiple threads and can spend days processing hundreds of gigabytes of image output (depending on the size of the tests).

We're stuck on Tomcat seven because we can't upgrade beyond Java 6, which brings a whole manner of security issues, but that eager little Java updated will break the tool chain if it gets its way.

Between these two components we have the Java RMI server (sometimes) working to help generate image data on the client side before all images are pulled across a UNC network path onto the server that processes test jobs (in PDF format), by reading into the xref table of said PDF, finding the embedded image data (for our server consumed test files are just flate encoded TIFF files wrapped around just enough PDF to make them valid) and uses a tool to create a difference mask of two images.

This tool is very error prone, it can't difference images of different sizes, colour spaces, orientations or pixel depths, but it's the best we have.

The tool is installed in both the client and server if the client can generate images it'll query from the server which ones it needs to and if it can't the server will use the tool itself.

Our shells have custom profiles for linking to a whole manner of third party tools and libraries, including a link to visual studio 2005 (more indirectly related build dependencies), the whole profile has to ensure that absolutely no operating system pollution gets into the shell, most of our apps are installed in our home directories and we have to ensure our paths are correct for every single application we add.

And... Fucking and!

Most of the tools are stored as source bundles in a version control system... Not got or mercurial, not perforce or svn, not even CVS... They use a custom built version control system that is built on top of RCS, it keeps a central database of locked files (using soft and hard locks along with write protecting the files in the file system) to ensure users can't get merge conflicts by preventing other users from writing to the files at all.

Branching is heavy weight and can take the best part of a day to create a new branch and populate the history.

Gathering the tools alone to build the Dev environment to build my project takes the best part of a week.

What should be a joy come hardware refresh year becomes a curse ("Well fuck, now I loose a week spending it setting up the Dev environment on ANOTHER machine").

Needless to say, I enjoy NOT working with Java. A lot of this isn't Javas fault, but there's a lot of things that Java (specifically the Java 6 version we're stuck on) does not make easy.

This is why I prefer to build my web apps in python or node, hell, I'd even take Lua... Just... Compiling web pages into executable Java classes, why? I mean I understand the implementation of how this happens, but why did my predecessor have to choose this? Why?

Random thoughts on more out of the box tools/environments.

Subject: Pharo

Some time ago I had shown one of my coworkers about Pharo and he quickly got the main idea behind it but mentioned how he didn't like the idea of leaving behind his text editor to deal with source code.

Some time last week I showed the dude some cool 3d animations you can do with Pharo while simultaneously manipulating the code to change them in real time. Now that caught his attention particularly and he decided he wanted to know more about the language but in particular the benefits of fucking around with an image based environment rather than a file based.

Both of us reached the conclusion that image based makes file based dev enviroments seem quaint in comparison, but estimated that it was nothing more than a sentiment rather than a fact.

We then considered what could be the advantage/disadvantages of such environments but I couldn't come up with anything other than the system not having something like Vim or VS Code or whatever which people love, but that it makes up for it with some of the craziest IDE tools I had ever seen. Plugins in this case act like source code repos that you can download and activate into your workflow in what feels something similar to VS Code being extended via plugins written in JS, and since the GUI is maleable as it is(because everything is basically just subsets of morp h windows) then extending functionality becomes so intuitive that its funny

Whereas with Emacs(for example) you have to really grind your gears with Elisp or Vimscript in Vim etc etc, with Pharo your plugin system is basicall you just adding classes that will convert your OS looking IDE into something else.

Because of how light the vm machine is, portability is a non issue, and passing pharo programs arround is not like installing Java in which you need the JVM.

Source code versioning, very important, already integrated into every live environment and can be extended to do pushes through simple key bindings with no hassle.

I dunno, I just feel that the tool is too good to be true. I keep trying to push limits into it but thus far I have found: data visualization and image modeling to work fine, web development with Teapot to be a cakewalk and work fine, therr are even packages for Arduino development.

I think its biggest con would be the image based system, but would really need to look into how this is bad by any reason other than "aww man I want vim!" since apparently some psychos already made Emacs and VS code packages for interfacing with Pharo source trees.

Embedded is certainly out of the question for any real project since its garbage collected and not the most performant cookie in the jar.

For Data science I can see some future, seems just as intuitive and interesting as a Jupyter Notebook actually, but the process can't and will not be the same since I still don't know of a way to save playground snippets unless you literally create classes for it, in which case every model you build gets saved inside of an object, sounds possible but, strange since it is not a the most common workflow in jupyter.

Some of the environment is sometimes glitchy, but it does have continuos development and have not found many hassles.

There is a biased factor from my side: I seem to be wired to understand the syntax and simple object model better than in other languages. To me this feels natural as if I was just writing ideas rather than code, mostly because I feel that there really ain't much in terms of syntax, the language gets out of my way and the IDE feels like the most intuitive environment in the world to me. I can see why some people would find it REALLY weird of counterintuitive tho.

Guess I really am a simple dude.

So I ran into a perplexing "issue" today at work and I'm hoping some of you here have had experience with this. I got a story-time from my coworker about the early days of my company's product that I work on and heard about why I was running into so much code that appeared to be written hastily (cause it was). Turns out during the hardware bring-up phase, they were moving so fast they had to turn on all sorts of low level drivers and get them working in the system within a matter of days, just to keep up with the hardware team. Now keep in mind, these aren't "trivial" peripherals like a UART. Apparently the Ethernet driver had a grand total of a week to go from nothing to something communicating. Now, I'm a completely self-taught embedded systems focused software engineer and got to where I am simply cause I freaking love embedded systems. It's the best. BUT, the path I took involved focusing on quality over quantity, simply because I learned very quickly that if I did not take the time to think about what I was doing, I would screw myself over. My entire motto in life is something to the effect of "If I'm going to do it, I'm going to do it to the best of my abilities." As such, I tend to be one of the more forward thinking engineers on my team despite relative to my very small amount of professional experience (essentially I screwed myself over on my projects waaaay too often in the past years and learned from it). But what I learned today slightly terrifies me and took me aback. I know full well that there is going to come a point in my career where I do not have the time to produce quality code and really think about what I am designing....and yet it STILL has to work. I'm even in the aerospace field where safety is critical! I had not even considered that to be a possibility. Ideally I would like to prepare now so that I can be effective when that time does come...Have any of you been on the other side of this? What was it like? How can I grow now to be better prepared and provide value to my company when those situations come about? I know this is going to be extremely uncomfortable for me, but c'est la vie.

TLDR: I'm personally driven to produce quality code, but heard a horror story today about having to produce tons of safety-critical code in a short time without time for design. Ensue existential crisis. Help! Suggestions for growth?!

Edit: Just so I'm clear, the code base is good. We do extensive testing (for lots of reasons), but it just wasn't up to my "personal standards".

I hate systemd, i hate it. Which idiot wrote that piece of crap? And it isn't that easy to replace it when it is so embedded in the distro.

Its commands can't even output text normally, which should the absolute basic functionality of every program. And it does things automatically i didn't tell it to do, for example setting the system time to some random date instead of leaving it at 1970-01-01.

Would you like a Raspberry Pi ? If yes, what kind of project would you like to do with ?

Opinions

Hello, I’m considering building a web framework.

My ideal features would be:
Customizable authentication system(considering using a jwt lib)
Embedded DB(bolt db)
ORM( writing my own)
REST api to DB (via code generator)
Code generator(generation of models and views via cli)
GUI to db(some admin dashboard)
CORS(web service right?)

Why?
Ease of development
Fast prototyping of small-medium web services.
Fun.

My question is, do i have to many things on my platter? Should i narrow it down into less featured framework? What feature should I focus on? How should i benchmark it? Should i write tests for absolutely everything or just for exported methods? What should i take into consideration when developing ORM API, Auth API...

The language is Go

Thank you for your input

So apparently changing the root password on my embedded linux system from the default to anything else breaks ssh. The only error i get is, that the password has "expired".
Dis is gonna take a long time to figure out, cuz no system logger and only serial access...

Considering using a node.js based library for a simple interface on an embedded ARM system. I have zero experience with node.js. At the very least I will use this as a test rig outside of the embedded system.

How much space will a minimal node.js server take?

Note: If its in the gigs my guess is this will be too large for our system.

TL;DR: Embedded software guy needs to create a multi-instance sandbox environment in Jenkins for testing and not sure what good solutions are out there. Looking for suggestions.

So at work, we have these really cool integration tests that validate our system for flight safety. What's not so cool is that due to factors outside of my control, each test has to be run serially and the entire test suite can take many many hours. This is mostly due to a hardware limitation (not enough physical NICs), but there are other SW factors as well.

What I would like to do is somehow be able to wrap up all the resources into a neat little package and then deploy that package into some kind of virtual environment that can be instantiated on a Jenkins job. The NIC issue would be replaced with a virtual one and *theoretically* I should be able to spawn as many instances of this virtual environment as my CPU and RAM can handle. In short, I want to pseudo parallelize our test suite and drive down our testing time. Somehow I would need to be able to control this entire thing from a script of some sort.

Does anyone know of something out there that would satisfy these kinds of requirements? Double internet points if it's open source.

Fuck sake, had to change the cooling system on my desktop, figured out the new cooling is too big(Noctua) to fit the GPU back, change the HDMI output to the motherboard(my CPU is an APU) and black screen all the time :(

It's fucking normal that as soon as the old GPU is lacking the system is not capable to switch to the embedded one? Fuck me.

I am working on an embedded system, a microcontroller-based design. The system has an Ethernet port. I am using NetX framework in the microcontroller firmware.
The DHCP Client is executed properly, an IP address is assigned correctly when connected to a router. I connect a laptop to the router using a LAN cable. Then TCP sockets behave the way they should, UDP broadcast behave the way they should. The only issue is, when I connect a Laptop over wireless to the same router UDP broadcast are received on application on Laptop, but data sent is not received on the embedded device.
Any idea why?

Platform:
Laptop is Windows
Embedded Device: Renesas S7G2, NetX framework.

Any c++ embedded system programmers here.what kind of work do you do ,what are your daily tasks etc.and what boards do you use