March 2020 was the month when all Arm training suddenly had to go virtual. With the outbreak of Covid-19, global lock downs and remote working for all those that could, classroom training from Arm had to adapt and had to do it quickly.
We'd already been…
Dear all,
I am an engineer who is doing signal processing on xilinx FPGAs. I am familiar with C/VHDL/MATLAB. However I want to learn ARM based micro-processors. I know very little about processors and their architecture. Absolutely no practical experience…
Dear All,
I am new to Arm Processors, I don't know how to start Arm Programming and Application development, can anybody help me? I have working experience on DSP Processor, and Microcontroller, which is the best low cost Arm Processor for personal…
hello !
i am houssam an electrical engineering student, i am new to this forum and new for ARM processore i want to make my own PLC (programable logic controler), and i need a processore for to build this PLC, i find a lot of type of ARM processore (cortex…
Hi everyone,
I want to start learning microcontrollers and embedded linux? I want to ask what is differene between A, R and M series of ARM microcontroller? Kindly also suggest me a good book to start learning ARM microcontroller? Which board should I…
in arm7tdmi, suppose instruction is being executed and at same time FIQ and IRQ both occur at same time.now according to priority FIQ will be handled then IRQ but my question is that how it will handled IRQ after return from FIQ
i means…
Hi Experts,
Is there any document on general software guidelines in reducing the cache miss rate in the system for ARMV7 architectures ?
If it is more specific to A/R/M then its great..
I'm working an a project on a Texas Instruments AM3517 Cortex-A8 processor. I was seeing less than expected performance, and did a simple comparison with a Cortex-M3 processor. The M3 performance was more than twice as good as the A8(?!).
The test…
Hi, Sorry if this is a long thread but i'm really confused.
I program for AVR MCUs and also know about Arduino, I can program for different ATMEL MCUs with looking at datasheets, And i also programmed a few basic stuff on Cortex-M3 LPC1768, without…
greetings,
as i know the boot loader is the start-up for most of controllers today. till now i just used the boot loader written by someone but i don't have any idea about it how to write it what are the things we have to include and what…
Hi Experts,
How to derive the cache memory requirement for the working of the software ?
I could understand that each of the A/M/R processors have its own applications and build with its own Cache size MPU/MMU configurations but how this is derived with…
as we know supervisor mode is priviliged and user is not. at reset time in debugging mode, i read the cpsr it is 0x1d3 means in supervisor mode, so i can change CPSR so i changed it to 0x1d0 which is user mode, since user mode is unpriviliged so i must…
what are the minimum hardware requirements to setup wifi on arm-7 processors.
Hi Experts,
As the general discussions seen in the community, it would be great if there is a general guidelines on the list of criteria or guidelines involved in the selection of Cortex A/R/M series Processors ?
Rather than application specific some other…
Hi everyone!!
I am looking to work on some projects using ARM. I have completed a basic course on ARM M3/M4 (UT Austin 6.01x by Jon Valvano and Ramesh Yerraballi) online. Now, I want to learn advanced things, especially real-time applications. How should…
Hello experts,
I would like to ask the reason why the exception frame forms on PSP in the Cortex-M architecture.
My understanding is that MSP (Main Stack Pointer) is the interrupt stack pointer and PSP (Porcess Stack Pointer) is the normal (user) stack…
Hi, I make a software for Cortex-A9 and Cortex-M4 (both uni-processor system).
Question.
Is 64bit-aligned STRD(64bit memory access) atomic ?
(I know tha It is not atomic, but i don't know behavior.)
For example:
LDR R2,=buff
mov R0, #1
mov R1, #2
STRD R0…
What's the difference between core, processor,cluster and CPU?
Hi experts!
I want to use ldr/str or ldm/stm to copy memory not aligned 4bytes.
I know their input address should be aligned by 4 bytes.
but is there any solution to use ldr/str or ldm/stm though src or dst isn't aliged 4byte by modifing following code?…
We live in a world where voice-based products have significantly changed the way we communicate with technology. It is predicted that smart assistant devices in the home will grow by 1.6 billion units in 2022 in the US alone. Soon, you will be able to…
Picture your smart assistant at home: you say a command, and it recognizes your voice, processes what you’re saying and responds. This is an example of a multi-sensor device that requires signal processing. Designers of compelling voice communication…
I'm searching for microcontrollers for a real-time motor control application. I see a lot of Cortex-M solutions for handling this, but why don't we see a lot of Cortex-A solutions specifically targeted for this?
Is there something inherent to the…
Howdy, I was trying to find some basic performance benchmarks for a couple of different ARM cores: The Arm 926EJ-S, Cortex A9, and the Cortex M7.
I am looking for primarily DMIPS (per MHz or a form that requires me scaling to my specific chip is fine…
There’s no denying that Embedded World (EW) is a whirlwind – 1000 exhibits, 35,000 visitors and over 2,000 industry participants – but now that it’s all over and the dust has settled, I wanted to take a moment to reflect on its impact, and consider the…
