How to write a simple driver in bare metal systems: volatile, memory barrier, critical sections and so on

Started by pozz in comp.arch.embedded3 hours ago 9 replies

Even I write software for embedded systems for more than 10 years, there's an argument that from time to time let me think for hours and leave...

Even I write software for embedded systems for more than 10 years, there's an argument that from time to time let me think for hours and leave me with many doubts. Consider a simple embedded system based on a MCU (AVR8 or Cortex-Mx). The software is bare metal, without any OS. The main pattern is the well known mainloop (background code) that is interrupted by ISR. Interrupts are use...


CfC 26th Ada-Europe Int. Conf. Reliable Software Technologies

Started by Dirk Craeynest in comp.arch.embedded4 days ago

----------------------------------------------------------------------- Call for Contributions 26th...

----------------------------------------------------------------------- Call for Contributions 26th Ada-Europe International Conference on Reliable Software Technologies (AEiC 2022) 14-17 June 2022, Ghent, Belgium www.ada-europe.org/conference2022 Organized by Ada-Eu...


Multithreaded disk access

Started by Don Y in comp.arch.embedded6 days ago 17 replies

As a *rough* figure, what would you expect the bandwidth of a disk drive (spinning rust) to do as a function of number of discrete files being...

As a *rough* figure, what would you expect the bandwidth of a disk drive (spinning rust) to do as a function of number of discrete files being accessed, concurrently? E.g., if you can monitor the rough throughput of each stream and sum them, will they sum to 100% of the drive's bandwidth? 90%? 110? etc. [Note that drives have read-ahead and write caches so the speed of the media migh...


Convert 16x2 chars display to big TFT display

Started by pozz in comp.arch.embedded3 weeks ago 12 replies

I have a CPU board that interfaces to a standard 16x2 chars display, based on HD44780 controller. I'd like to replace this display with a...

I have a CPU board that interfaces to a standard 16x2 chars display, based on HD44780 controller. I'd like to replace this display with a full-color big TFT display, maybe 10", but I can't change the firmware of the CPU (because I don't have the source code and I can't rewrite it, because of cost and time). The simple idea is to create an interface between the current CPU board and t...


Sr Java Backend Developer - Ashburn VA / Piscataway NJ / Alpharetta GA / Dallas TX / Tampa FL

Started by Ram Vardhan in comp.arch.embedded2 months ago

Hi We have an immediate Openings with Our Client for a long term contract position Position #1 Job Title: Sr Java Backend Developer...

Hi We have an immediate Openings with Our Client for a long term contract position Position #1 Job Title: Sr Java Backend Developer Location: Ashburn VA / Piscataway NJ / Alpharetta GA / Dallas TX / Tampa FL Duration: 12 months Skills Required • Senior Java developer with strong technical background • Core Java, Spring boot & Microservice • Da


Stack analysis tool that really work?

Started by pozz in comp.arch.embedded2 months ago 42 replies

arm gcc and Cortex-Mx MCUs embedded systems. Is there a compilation-time (static) tool for stack analysis that really works? The best I...

arm gcc and Cortex-Mx MCUs embedded systems. Is there a compilation-time (static) tool for stack analysis that really works? The best I could find is -fstack-usage and avstack.pl Perl script, but I guess there's another and better way.


Shutdown behavior and flash storage devices

Started by Dave Nadler in comp.arch.embedded3 months ago 14 replies

Hi All - I'm wondering what other folks do about this issue... Consumer flash storage devices (USB memory stick, SD card, etc) have a nice...

Hi All - I'm wondering what other folks do about this issue... Consumer flash storage devices (USB memory stick, SD card, etc) have a nice internal wear-leveling controller. When one does a write operation, lots of sectors may be internally rejiggered to provide uniform wear (so things that are never rewritten from the application point of view are actually moved around and rewritten). T...


Books on LoRa(WAN)?

Started by Philipp Klaus Krause in comp.arch.embedded3 months ago 1 reply

Hello, I'm looking for a book to get a bit into LoRa and LoRaWAN. Should be in French, English or German. Any recommendations?

Hello, I'm looking for a book to get a bit into LoRa and LoRaWAN. Should be in French, English or German. Any recommendations?


64-bit embedded computing is here and now

Started by James Brakefield in comp.arch.embedded4 months ago 58 replies

Sometimes things move faster than expected. As someone with an embedded background this caught me by surprise: Tera-Byte microSD cards are...

Sometimes things move faster than expected. As someone with an embedded background this caught me by surprise: Tera-Byte microSD cards are readily available and getting cheaper. Heck, you can carry ten of them in a credit card pouch. Likely to move to the same price range as hard disks ($20/TB). That means that a 2+ square inch PCB can hold a 64-bit processor and enough storage for memo...


(Semi-) formal methods

Started by Don Y in comp.arch.embedded5 months ago 26 replies

How prevalent are (semi-) formal design methods employed? Which? [I don't have first-hand knowledge of *anyone* using them]

How prevalent are (semi-) formal design methods employed? Which? [I don't have first-hand knowledge of *anyone* using them]


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