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ARM

Comp.Arch.Embedded is a worldwide Usenet news group that is used to discuss various aspects of Embedded Systems development.

We found 1847 threads matching "arm"

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The most relevant threads are listed first

STR912 bitfield access to memory mapped peripherals

frikkiethirion - 11:17 25-07-08
Good day, I wonder if somebody has managed to create a structured way of accessing the memory mapped IO attached to the STR912 [ARM9] via bitfields. I can manipulate the members of a union that is declared in main(), bus as soon as I make a pointer type of my union and point it to the memory bu...STR912 bitfield access to memory mapped peripherals

reason for difference in MIPS between simulator and Board

swami.kmb - 10:09 24-07-08
Dear Friends, I am porting eAAC decoder in ARM926EJ-S (ARM9E core) The MIPS measurement in simulator and onboard are not same. MIPS onboard is higher than in simulator(4 to 6 MIPS) can anyone tell me what's the reason behind this? MIPS are measured onboard with cache disabled(at this point,will...reason for difference in MIPS between simulator and Board

Calculate Interrupt Latency of FreeRTOS with LPC23xx

lucians - 10:09 24-07-08
Hi guys, i'm a student of University of Genoa (Italy). I'm new on your website and i have already found some important information for my research. You are very cool and professional. Now i write here because i want to try to calculate the Interrupt Latency for freeRTOS using an ARM LPC23xx. ...Calculate Interrupt Latency of FreeRTOS with LPC23xx

Re: Virtualizing QNX 6.0

AZ Nomad - 09:06 24-07-08
On Thu, 24 Jul 2008 11:31:49 +0200, Dombo wrote: > AZ Nomad schreef: > > On Wed, 23 Jul 2008 17:17:11 +0200, Dombo wrote: > > > AZ Nomad schreef: > > > > On Wed, 23 Jul 2008 15:12:30 +0200, Dombo wrote: > > > > > AZ Nomad schreef: > > > > > > On Tue, 22 Jul 2008 22:07:49 -0500, J...Re: Virtualizing QNX 6.0

Re: Finding power - gnd shorts

JSprocket - 03:11 23-07-08
rickman wrote: > I have a small module that is shorted between the +12 volt plane and > ground. I am having a hard time finding where the short is so it can > be fixed. > I had this some years ago with my very first 4 layer PCB. Aaaargh! I took a board and sawed it in half: the short ...Re: Finding power - gnd shorts

Re: Cheapest USB microcontroller?

Neil - 00:38 23-07-08
Bob wrote: > Does anyone know the lowest cost microcontroller with a USB interface? > > I have done some Googling, and it seems there are quite a few USB > microcontrollers based on either ARM or 8051. Either is okay, but > they are not very cheap. They are all over $3 @ qty 1000. > ...Re: Cheapest USB microcontroller?

max. number of mapped spaces for ARM 926ES

Martinfnp - 10:43 22-07-08
Please, does anybody knows what's the limit of memory mapped regions for cache through CP15 in ARM 926EJ-S? Where do I find that info usually? I do not see that in user's manual and also I cannot read back that info or see it like in PowerPC through DBAT-IBAT registers. Thanks. ...max. number of mapped spaces for ARM 926ES

Re: computer-driven fans

Ron Ford - 21:44 21-07-08
On Mon, 21 Jul 2008 08:55:29 -0400, Rich Webb posted: > On Sun, 20 Jul 2008 21:55:10 -0600, Ron Ford wrote: > > > It would certainly seem that Atmel is the norm for AVR RISC controllers. > > The link didn't have any information about prices. While it looked like > > the chips themselve...Re: computer-driven fans

Re: Need RTOS & SSH for ARM-based remote terminal

JeffR - 20:11 21-07-08
> Processor is Atmel AT91SAM7XC256 connected by GSM modem. The client has > specified "encryption". I think it needs a formal RTOS and Secure Shell; > client says "get it working ASAP first and we'll add encryption later." > > Any recommendations? btw the eCosPro SSH middleware seems to be serv...Re: Need RTOS & SSH for ARM-based remote terminal

32-bit Microcontroller for $1.00 -Guy Macon

Guy Macon - 15:10 21-07-08
While researching something else, I ran into the following rather interesting opinions: Consolidating the MCU market around the ARM architecture ("It's inevitable. ARM's Cortex-M3 processor core is going dominate the MCU market.") http://www.embedded.com/columns/guest/207001013 Lum...32-bit Microcontroller for $1.00                                                                                   -Guy Macon

Re: powerPC linux boot sequence

JeffR - 08:38 21-07-08
> Any can help me to find the boot sequence of powerPC 83xx of linux > kernel after the bootloader transfer control to kernel.. > > Please please help me.... > > thanks, > Nabendu > mkimage is run as part of the kernel build process, and creates the image header that uboot (or whatever ...Re: powerPC linux boot sequence

Re: Good hobbyist VGA camera module?

Mike Harrison - 17:30 16-07-08
On Wed, 16 Jul 2008 12:44:06 -0700 (PDT), larwe wrote: > Can someone suggest a reasonably-priced monochrome camera module (I > can live with color but don't need it), VGA-resolution camera module > with some kind of buffer and low-speed interface; SPI, I2C, RS232, > etc. SPI would be my pre...Re: Good hobbyist VGA camera module?

MAX3421EUSB Peripheral enumerates as low speed

Bill Davy - 11:24 13-07-08
Good afternoon. I am trying to get a MAX3421E running as a peripheral and it keeps coming up in low-speed. I cannot see any bits I can use to change this. The device appears to work. It is a call to WinUsb_QueryDeviceInformation(usbHandle, DEVICE_SPEED, &length, &speed) which returns...MAX3421EUSB  Peripheral enumerates as low speed

build an arm board to run linux

manche - 16:07 11-07-08
I want to build an arm board to run linux. I'm not really interested in buying a board and messing around with it. I would go for a schematic though. Any pointers on how I could get started? I have heard mixed advice from people. Some say the atmel arm microcontrollers are pretty easy to hook up to ...build an arm board to run linux

Microcontroller Board

paul.angelin - 16:06 11-07-08
Dear friends, I am looking for a 32 bit Microcontroller Board for our project.The board must contain ADC & DAC.(If DAC is not there no problem).ROM- above 8 MB, RAM- above 20 MB and it should have CAN Controller.Please Help me by suggesting some boards that are not ARM based. Angelin ...Microcontroller Board

Re: Processors with remote programming / debugging

Stephen Pelc - 13:25 09-07-08
On Wed, 09 Jul 2008 08:25:44 -0500, "lucasvickers" wrote: > Hello, > I am looking into potential embedded microprocessors to use for a one time > project. About 2-3 units will be produced. A good software library and a > solid product are more important than volume pricing. > > - Remo...Re: Processors with remote programming / debugging

GNU LD fails to generate correct ARM Thumb veneer

adsouzp - 11:52 07-07-08
good day people: i have been using GNUARM/Cygwin for some time now and i have not encountered a problem like this before. BACKGROUND - target MCU is STR71x - CPU core is ARM7TDMI - toolchain is GNUARM 4.1.1 on Cygwin - source code - the first file to be linked is an ARM assembly .s fil...GNU LD fails to generate correct ARM Thumb veneer

Orthogonal matrix PS/2 kbd controller, low-power?

msg - 10:46 07-07-08
I need to make a wearable PS/2 keyboard (one-off) and would like some input to help me decide between some inconvenient alternatives. The device needs to be small enough to wear comfortably strapped to an arm, have keys with positive action and not too closely spaced so as to require a stylus to...Orthogonal matrix PS/2 kbd controller, low-power?

Embedded processor selection for long-life product

tns1 - 02:15 06-07-08
I am faced with selecting a replacement processor/uC for a re-design of some industrial controller/safety equipment. The technical requirements can be satisfied by just about any 32bit risc style uP/uC, but one key requirement is that since the product life is decades long, the particular pa...Embedded processor selection for long-life product

Re: Can You Guess Which Micro This Is?

linnix - 22:30 04-07-08
On Jul 4, 8:17 pm, donald wrote: > Scott in SoCal wrote: > > I just bought a small embedded device (an iPod adapter for a car > > stereo). Being the inquisitive type, I popped open the case to see > > what the board inside looked like. I immediately noticed that several > > of the c...Re: Can You Guess Which Micro This Is?

Faster than TI C2000?

Chris Carlen - 19:16 02-07-08
Hi: Even though I am able to do what I want with the existing 150MHz TMS320F2812 digital signal controller (DSC), I am always eager to have more speed, since applications that were otherwise inconceivable may become possible if more speed becomes available. Is it likely that there will b...Faster than TI C2000?

config for USB peripheral mode device

Dennis - 23:44 30-06-08
I am running 2.6.18 on a ARM board and I have a USB OTG device that I only need to run as a USB peripheral, not as a host USB device. I am having some problem getting it to work. Can someone see my config if it looks OK? Also I need to run usbnet on my FC5 laptop. I did a modprobe usbnet an...config for USB peripheral mode device

Re: a PC Based Oscilloscope?

msg - 01:19 26-06-08
CBFalconer wrote: > "Alex.Louie" wrote: > > > CBFalconer wrote: > > > > > Talal Itani wrote: > > > > > > > > > > I am sorry, I did not understand what you are telling me. > > > > > > Please do not remove attributions. Those are the initial lines > > > that say "Whozit wrote"....Re: a PC Based Oscilloscope?

AT91SAM7: C-startup

Roman Mashak - 19:40 23-06-08
Hello, I'm trying to understand the mechanism of remapping on AT91SAM7 chips and it's concerned the ARM assembly language. Basically what I wish to perceive is the way C-startup is implemented. As far as I understand, it strongly depends on a board involved and purpose of the firmware. B...AT91SAM7: C-startup

AT91SAM7: C-startup

Roman Mashak - 16:08 22-06-08
Hello, I'm trying to understand the mechanism of remapping on AT91SAM7 chips and it's concerned the ARM assembly language. Basically what I wish to perceive is the way C-startup is implemented. As far as I understand, it strongly depends on a board involved and purpose of the firmware. B...AT91SAM7: C-startup

Re: ckt for 8031 using 28c256(ROM) and 6264(RAM)

MK - 03:37 20-06-08
"arslan" wrote in message news:N8CdnT7xWMxQsMbVnZ2dnUVZ_v7inZ2d@giganews.com... > I am currently working on developing a 8031 based microcontroller system. I > am using 8031 x2, 28c256 and 6264. I am having some trouble making the ckt > can any body provide me with a ckt. It might hel...Re: ckt for 8031 using 28c256(ROM) and 6264(RAM)

How do I get 'gettext' in a embedded Linux target?

Steven Woody - 21:42 19-06-08
Hi, We are developing ARM/LInux applications and our program is using uclibc. The code which use 'gettext' as well as the Native-Language- Support can not linked and run until we copy a libintl.so to the cross- compilation enviroment and to the target. After that, however, even though the c...How do I get 'gettext' in a embedded Linux target?

Related to VXWORKS

A.P.Sundar - 07:07 19-06-08
1. Is there any free RTOS available which can be ported to ARM 7 and 9 controllers. 2. Can Vxworks be ported to VIA processors?. Sundar. ...Related to VXWORKS

Re: embedded system development environment

Freelance Embedded Systems Engineer - 19:20 18-06-08
guoliangqian@gmail.com wrote: > On Jun 18, 3:14 pm, "vinnie" wrote: > > > Hi All, > > > I am new to embedded system development and need your advice on my > > > upcoming project. I thank and appreciate your help in advance. > > > I'd like to setup a development environment that include...Re: embedded system development environment

Re: at91sam7: garbage on DBGU output

Roman Mashak - 18:38 18-06-08
Hello, Ulf! You wrote on Tue, 17 Jun 2008 06:19:43 +0200: US> Looks like a Linker problem to me. US> The program is linked to one place, but you are executing in another US> place, so position independent code will execute, but data (the string) US> is read from another location. ...Re: at91sam7: garbage on DBGU output

Difference between ARM9 and ARM11

zaheer031 - 09:26 18-06-08
Can anyone tell me the differences between the ARM9 and ARM11 specifically the L1 and L2 cache sizes in the two ...Difference between ARM9 and ARM11

Re: Please suggest USB to RS232 adapter that works 100% [ FTDI rocks... and tunnels a serial port through USB ]

Mel - 21:10 13-06-08
James Beck wrote: > The only BIG problem I have ever had was the fact that most of the > adapters we tested had some strange glitches occurring on the outputs at > very consistent intervals. Like 50KHz and ~100KHz on two I recall. I > presume this was some artifact introduced by the chipse...Re: Please suggest USB to RS232 adapter that works 100% [ FTDI rocks... and tunnels a serial port through USB ]

Re: Commercial Embedded Linux Vendors

andrew queisser - 15:17 11-06-08
"The Real Andy" wrote in message news:mp9v44db3sqanjlakga245api79j9c6es7@4ax.com... > I am trying hard to avoid embedded stuff these days, but potential > contract has come my way recently that needs some embeeded stuff. So > whilst I am nutting out requirements I also need to put though...Re: Commercial Embedded Linux Vendors

Re: Adding USB Interface to Low-Cost 8-Bit Microcontroller

Spehro Pefhany - 10:44 10-06-08
On Mon, 9 Jun 2008 21:13:19 -0400, "David T. Ashley" wrote: > Hi, > > I work for a company that produces low-cost consumer electronics that use > 8-bit microcontrollers. These have the standard 8-bit whistles, like SPI, > SCI, etc. > > We've kicked around the idea of allowing custo...Re: Adding USB Interface to Low-Cost 8-Bit Microcontroller

Programming AVR from ARM using CAN Bus interface

pidy - 06:20 09-06-08
Hello to all, I'm looking since many days something about my problem without find nothing interesting so I'm going to post it. I have a system of 4 different closed boxes: the Main box based on an Linux ARM9 processor with a static IP and the A, B and C boxes each one based on an AT90CAN128 mi...Programming AVR from ARM using CAN Bus interface

Newbie questions on ARM

08:54 08-06-08
I've never used ARM microprocessors, so i have questions about. For now, i have only used 8 bit micropoccessors and i have programmed only in C and asm language (i'm not expert in object oriented programming). I shoud use an ARM7 microprocessor. 1)What is the best ide for software development?An...Newbie questions on ARM

FPA in ARM

Neo - 23:38 05-06-08
What are th so called FPA registers in ARM? How are they used? ...FPA in ARM

Re: Development tools comments

Not Really Me - 10:17 05-06-08
wrote in message news:6cc6066d-1f23-4267-9911-628d5079c402@k13g2000hse.googlegroups.com... > Hi Experts, > > Let me start by providing some background. > > We have designed an ASIC: 8051 + non standard peripherals (timers etc) > + FLASH + RF frontent for a product used in wireless...Re: Development tools comments

Re: DSP recomendation

Chris Carlen - 17:23 02-06-08
Joel wrote: > I'm looking to create a portable stereo audio device. This system is > exactly what I am looking for: > > http://www.amis.com/products/dsp/belasigna_200.html > > However the evaluation and development tools are thousands of dollars > which puts it out of reach. Can so...Re: DSP recomendation

Re: ideas for a BASIC compiler

42Bastian Schick - 07:04 02-06-08
On Mon, 2 Jun 2008 00:42:24 +0200, Frank Buss wrote: > I've started a BASIC compiler, first for PICs, but later I plan to use this > for ARM platforms, too. This is an example source code: Why go for a compiler. The advantage of BASIC has been the trial'n error learning with an interpret...Re: ideas for a BASIC compiler
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