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Questions tagged [arm]

32-bit microcontroller IP. The ARM company which designs the ARM cores doesn't make controllers itself, but licences the IP to other manufacturers. ARM is the leading 32-bit controller and is available from tens of suppliers.

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What's so great about ARM?

In a comment to this answer Kortuk asks what the ARM advantage is. I first added some arguments in my answer, but I think the question is interesting enough to be a question in itself, so that more answers are possible.
stevenvh
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CMSIS vs HAL vs Standard Peripherals Library

So I'm switching from PICs to ARM and I bought an STM32F4 discovery board. So far I understand that to program it you can either access all registers directly in memory (obvious way) and also there are 3 main libraries you can use to make your life…
John
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Why is AVR used in Arduino?

Why is Arduino using AVR? I understand that they are the official processor but there isn't a reason the code couldn't be ported to an ARM or a Freescale architecture other than cost, right? As long as there is onboard memory, I figured there could…
Chris Gammell
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How do I design my very own ARM based processors?

I have several questions about how I would design my own ARM-based CPU? How does one start with an ARM license and end up with a package ready to be soldered on to a board? What do I get from ARM (I am sure they have multiple license options to…
Lord Loh.
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ARM Cortex-M3 development tools?

I am planning to migrate to the NXP Cortex M3 architecture and I'm a little lost between the existant development tools. Keil is expensive and I don't know if it's worth it. Anyone who has tried some compiler can give any advice? I found this…
mba7
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What exactly does ARM sell to vendors?

Assumptions: Computer architecture: Describes how the different modules of a processor interact with each other. A computer architecture is defined using vhdl files Computer Organization: Describes the physical layout of the processor modules on…
aiao
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Linux on ARM Cortex-M3 series

I'm new to ARM and a bit confused with all the diferent series. I need to build a low power gateway (ethernet, wifi...), so I guess a cortex-M or cortex-R will be the good starting point. But it didn't find any dev board with say a cortex-m3 (wich…
jojo l'abricot
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What microprocessor for experimentation?

I harbor a secret fantasy (oops, not so secret anymore) to build a simple computer from scratch. I'm looking for an easy-to-use microprocessor to start with. I know about the usual suspects such as the 6502, 68000, 8086, Z80, etc. But I'm wondering…
Barry Brown
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How to choose an ARM Cortex M3 microcontroller?

Based on my rough requirements of being in the 36 to 72 MHz range, having 16kb+ SRAM, 128kb+ flash, being programmable in C, I have decided that for my application I want to use an ARM Cortex M3 MCU. The question is, what criteria do people use to…
JDS
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What's really the difference between the Cortex-M series and the Cortex-R series?

It's interesting! I searched for find a clear article, but I couldn't find a clear article for this. Also I found this link: ARM Cortex-R and this link: Cortex-R Series but they are not exactly clear. in the wiki page wrote: The cores are intended…
Roh
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Good beginner book on ARM

I'm looking for a good beginner book for ARM microcontrollers. It should cover the CPU architecture and the boot sequence and ideally also assembler, C and peripherals. I have a book like this for AVRs and there seem to be several good choices for…
kwo
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STM32F4 and HAL

So I've been experimenting a while with the STM32F407 (I'm new to ARM) and decided to write a simple app using the HAL libraries since it seems ST has discontinued the Standard Peripherals Libraries. So my question is, what is the point in HAL?…
John
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How to Transition from "Basic" Microcontrollers to ARM Cortex?

I have many years of experience with 8-bit cores from various manufacturers - namely 8051, PIC, and AVR - and I now have a Cortex M0 to figure out. Specifically this one, but I hope we can be more general than that. It's turning out to be a bit…
AaronD
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Cheapest ARM with an MMU

What is the cheapest ARM processor with an MMU so I don't have to use uCLinux? Bonus for non-bga and integrated RAM/Flash
stbtra
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Soft core processors vs hard core processors

I am doing a study on FPGA interfacing with microprocessors such as ARM9. I found the concept of soft core processors and hard core processors in my study. May I know what is the comparison between these two types, the similarities and differences…
How Xing Quan
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