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.

11
votes
4answers
7k views

Is it possible to drive TTL inputs from 3.3v microcontroller

I need a quick heads up on a problem I am trying to solve at work. I'm trying to connect to a parallel data port on an interface module we use to access smart cards. The port has an 8bit input and an ...
7
votes
4answers
4k views

What's the best bootloader for an embedded Linux board?

I'm designing an embedded Linux board for use as a web-based controller. It will be based around an Atmel AT91SAM9G20, which uses an ARM926EJ-S core. Anyone have particularly good or bad experiences ...
9
votes
8answers
10k views

Best way to install arm-elf-gcc onto a Linux machine

Hey folks, I'm working on a device using arm-elf-gcc to compile code for a MakingThings prototype board. My development machine is a Linux box running Ubuntu 9.10. On a different linux box using ...
7
votes
6answers
883 views

Is there a Cortex-M3 with external voltage regulators?

Does anyone know of an ARM Cortex-M3 microcontroller with both the 3.3V peripheral and 1.8V core voltages supplied by external sources? Everything I have found so far has an internal regulator for ...
7
votes
2answers
4k views

Best development board for ARM9? [closed]

I am looking for a cheap but powerful dev board for an ARM9 processor. It needs to be able to run linux. I am unsure about the exact specifications for RAM and such(thats partly why I'm posting this ...
5
votes
3answers
3k views

ARM watchdog reset

I have an MP3 development board I picked up from sparkfun that runs off the LPC2148 ARM processor. In looking through the code, I see a function to force a watchdog reset. My question is, how do you ...
37
votes
10answers
48k views

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 ...
35
votes
13answers
22k views

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 ...
6
votes
2answers
1k views

Relation between power consumed and MCPS (million cycles per second) consumed on a processor

I have been working on a ARM cortex A8 board on MP3 decoder. While doing this I have a requirement saying the MP3 decoder solution I am doing should consume 50 mW. This generated few questions in my ...
33
votes
15answers
1k views

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 ...