Questions tagged [arm]
ARM is a RISC architecture designed for low-power and embedded use, e.g. smart phones and microcontrollers.
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What are ARM64 system registers
I see in arm reference manuals they give info about certain configurations such as
HCR_EL2, Hypervisor Configuration Register (HCR_EL2), and what I read in books and reference manual is that ARM64 ...
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why do we need instructions set for processor or controller?
Why is it necessary to have an instruction set for processors and controllers? Can't we simply convert high-level language programs, like those written in C, directly into binaries without the need ...
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What is the benefit of equipping a computer or smartphone with multiple CPU cores that differ in clock speed? [closed]
I've bought a samsung galaxy s21 ultra about a year ago. Today i was looking at the specs again and i noticed that the Samsung Exynos 2100 processor consists out of 1 single CPU core of 2.9 GHz, three ...
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How to anticipate a software future where ARM (potentially) replaces x86 in server and PCs? [closed]
With the introduction of Apple M1 processor, ARM has stood up to be a capable competitor and an alternative to x86 processors. We can foresee a future where ARM captures considerable market share of ...
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Why will it take approximately 2 years for Apple to transition Mac to ARM? [closed]
Why will it take that long to transition all Mac software to ARM according to Apple? I thought all they would need to do is to recompile the source code of their apps and rewrite SIMD code from intel ...
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Executable VS. Software image
Need your help to clarify primitive concepts:
In an embedded system, when a program runs on the processor (ARM as an example), in my understanding that it is because the "code to be executed" is ...
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Is memory allocation hardware handled or OS?
I am currently working on a bare metal project with an arm processor using GCC arm compiler. If I call malloc, is the allocated memory tracked in the MMU? For some reason I had assumed an OS typically ...
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Endianess ARM Assembly Confusion
I'm writing code using arm assembly language for college and the I'm really confused about endianess.
The default should be little endian but I'm sure the test string has been stored big endian. The ...
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Writing at the start of a file something you only know at the end
Background: I'm writing micro controller C code to write an EBML file. EBML is like a binary XML with nested elements, but instead of start and end tags, there is a start ID, length, and then the data....
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mutex implementation in arm based embedded system
I have implemented a mutex on an embedded system that have armv7 processor and a basic scheduler
There are several instructions in armv7 instruction set that are used for power efficiency.
Two of ...
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What are microcontrollers programmed in most in industry? C or Assembly? [closed]
So recently in school we have started programming klm25z boards using ARM Assembly. I was wondering if in most industry jobs, microcontrollers are really programmed in assembly over C. It seems to ...
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Cross-compiling Java app to run directly on ARM
Please note: although I am using ARM SAM3X8E in this example, I'm just using that as a concrete example, and the answer to this question could easily be given using any other MCU such as AVR, etc.
I ...
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Compiling and deploying a C program to an MCU running an RTOS
Please note: Even though I'm specifically talking about an RTOS called Embox here, and even though I'm talking about AVR/ARm, I think this question can be answered by anybody whose ever done a fair ...
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Compiling and deploying RTOS to an MCU
Please note: Even though I'm specifically talking about an RTOS called Embox here, and even though I'm talking about AVR/ARm, I think this question can be answered by anybody whose ever done a fair ...
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Benefits of RTOS vs Bare Metal for MCU Programming?
Please note: This question specifically mentions two RTOSes but is more generic and can probably be answered by anybody who has written C code for embedded RTOSes before, and had their software run ...
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