High packet rate ethernet with LwIP

Started by Stef in comp.arch.embedded1 year ago 30 replies

For transportation of several high speed serial ports, we want to use a serial over ethernet approach. At a minimum I need to transfer four...

For transportation of several high speed serial ports, we want to use a serial over ethernet approach. At a minimum I need to transfer four ports with 512 byte packets that come in every 40 ms at 2 Mbps. Search for a ready to use (for test at least) device has turned up nothing. Standard devices usually go up to 230 kbps, some to 1 Mbps. Most faster ones are single port only. And it should ...


[Fully Funded Scholarship] Research Assistantship (Spring, 2020) at the Graduate School, School of Software, Hallym University, Korea

Started by jg.lee in comp.arch.embedded1 year ago

Research Assistantship (Spring, 2020) at the Graduate School, School of Software, Hallym University, Korea The [Advanced AI-Communication...

Research Assistantship (Spring, 2020) at the Graduate School, School of Software, Hallym University, Korea The [Advanced AI-Communication Lab] and [AI Accelerator Design Lab] of the Hallym University seek to recruit promising PhD and MSc or MSc-PhD research students. * [Advanced AI-Communication Lab] The selected students will conduct research in the AI based wireless communic


Low form-factor Raspberry Pi alternates

Started by Pankaj Jangid in comp.arch.embedded1 year ago 4 replies

Hi, I am currently experimenting with Pi Zero W, which is a Raspberry Pi board with minimal configuration and has a very small form factor...

Hi, I am currently experimenting with Pi Zero W, which is a Raspberry Pi board with minimal configuration and has a very small form factor and has wifi. Raspberry Pi is a good generic board. But for specific applications like Home Automation etc. we probably don't need a generic board. As of now we could think of only few functions that the board must support. Example, 1. Switch on...


IBM's PPC being open sourced .. what does this mean for embedded devices ?

Started by kristoff in comp.arch.embedded1 year ago 10 replies

HI all, I know is this kind-of old news by now, but -as far as I see- this has not been discussed here: IBM is open-sourcing their...

HI all, I know is this kind-of old news by now, but -as far as I see- this has not been discussed here: IBM is open-sourcing their PowerPC processor design. (E.g. see here and other links:) https://www.eejournal.com/article/ibm-gives-away-powerpc-goes-open-source/) As PowerPC processors do are used in embedded devices, anybody any idea what this would mean for the embedded-pro...


intel 386 et al

Started by Hul Tytus in comp.arch.embedded1 year ago 13 replies

Anyone know of a good handbook describing the machine code of Intel's 386's? A page describing each instruction along with some text about the...

Anyone know of a good handbook describing the machine code of Intel's 386's? A page describing each instruction along with some text about the various sequences caused by interupts and descriptions of the various tables and "descriptors" and special purpose registers and the effects of "protected mode" is the hope. An older text that didn't describe the 64 bit versions would be ok, mayb...


RISC-V Picking Up Steam

Started by Rick C in comp.arch.embedded1 year ago 11 replies

RISC-V is appearing in low cost MCUs and on low cost START boards. Just not documented in English. $11 simple...

RISC-V is appearing in low cost MCUs and on low cost START boards. Just not documented in English. $11 simple board... https://detail.tmall.com/item.htm?spm=a1z10.4-b-s.w5003-21978304610.1.48fa306cBtYGKJ&id=60102035 6481&skuId=4380996691920 $50 Full featured Eval board... https://detail.tmall.com/item.htm?spm=a1z10.4-b-s.w5003-21978304610.2.48fa306cBtYGKJ&id=60146141 8296&skuId=4210


Embedded Intel Optane?

Started by Rick C in comp.arch.embedded1 year ago 1 reply

I was asking about Optane memory in another group and it occurred to me that while it is to expensive to make a SSD from, is it affordable to use...

I was asking about Optane memory in another group and it occurred to me that while it is to expensive to make a SSD from, is it affordable to use at smaller scale? It is supposed to be cheaper, but slower than RAM, faster but more expensive than Flash. Would Optane be compatible enough with MCU processing that it could be included on chip instead of Flash? They have to play ga


No dynamic memory at all: newlib and sprintf

Started by pozz in comp.arch.embedded1 year ago 11 replies

I'd like to avoid using dynamic memory (heap) at all. I'm using gcc for ARM and newlib (really I'm using NXP MCUXpresso IDE, but I don't think...

I'd like to avoid using dynamic memory (heap) at all. I'm using gcc for ARM and newlib (really I'm using NXP MCUXpresso IDE, but I don't think this is important). When the code is minimal, I noticed heap related functions (malloc, free and so on) aren't included in the output binary file. However, as soon as I use sprintf-like functions, heap is used. I looked at the newlib source cod...


What is TI PRU-ICSS processor core?

Started by Dave Nadler in comp.arch.embedded1 year ago 6 replies

TI's web page is here, but doesn't explain origin of instruction set? http://processors.wiki.ti.com/index.php/PRU-ICSS Anybody here have...

TI's web page is here, but doesn't explain origin of instruction set? http://processors.wiki.ti.com/index.php/PRU-ICSS Anybody here have experience with these parts, or know where they're used? Thanks, Best Regards, Dave


Input-driven vs event-driven state machines in embedded software

Started by StateMachineCOM in comp.arch.embedded1 year ago 10 replies

There is a lot of confusion about state machines in embedded software. Some example of this is the recent discussion in this forum: "FSM - Mealy...

There is a lot of confusion about state machines in embedded software. Some example of this is the recent discussion in this forum: "FSM - Mealy vs Moore". It seems to me that the real question to ask is not Mealy vs Moore, but "input-driven" vs "event-driven" state machines. "Input-driven" state machines seem to be far more popular, and most examples published in various magazin


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