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Comp.Arch.Embedded is a worldwide Usenet news group that is used to discuss various aspects of Embedded Systems development.
We found 2137 threads matching "arm"
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Re: Bootloading from SD card
whygee - 2009-11-18 23:57:00
hi,
ArarghMail911NOSPAM@NOT.AT.Arargh.com wrote:
> It's not all that difficult for FAT12 or FAT16 if you restrict your
> file to the root directory. I wrote a routine that searches the root
> directory for a specific file, and reads it into memory via the FAT. I
> think it took less than...
Re: NIOS and ftoa()
Chris Burrows - 2009-11-18 19:34:00
"John Speth" wrote in message
news:he1ta9$1852$1@adenine.netfront.net...
> (I'm to OP)
>
> Thanks for all the good suggestions that have come forth so far. Some
> will be useful and some won't be. I can envision considerable execution
> savings if I use some sort of fixed point ma...OpenOCD+GDB (stepi. Unable to single step)
dwx - 2009-11-16 08:01:00
Hello,
I've a small "problem". I first describe the situation:::
I have a AT91 microcontroller connected with the host by a amontec JTAG...
I start OpenOCD and everithing run OK.
In the gdb script (to connect to openocd) i set a hardware breakpoint (with
hbreak main), and a continue command......Re: Superscalar embedded processors?
Nils - 2009-11-15 07:48:00
DJ Delorie wrote:
> Richard Flach writes:
> > I am wondering if there are now already the first superscalar
> > processors available for the embedded market?
>
> Have been for a while now. The Toshiba MeP with IVC2, for example,
> can run up to 3 different insns per cycle, and the M...TI E-tech Day November 17 - Live Webcasts and Q&A on MSP430, C2000, Stellaris
2009-11-14 10:46:00
eTech Day online Community & Training event on November 17, 2009
Time:10:00AM Tuesday, November 17th
Location:Online
Register here: http://bit.ly/TI_E-TechDay
Register in advance to test your browsers and to participate in the
forums
and IRC chat channels today.
Join the TI E2E online c...Re: Google releases new programing language.
krel - 2009-11-12 17:09:00
David Brown wrote:
> Currently limited to x86 and amd64.
Well they specifically mention that an incomplete port to ARM exists so
I guess it is not too far away.
...Re: va_args (va_start, va_end, va_list ) souce?
Arlet - 2009-11-12 06:35:00
On Thu, 12 Nov 2009 03:06:27 -0800, vladitx wrote:
> On Nov 12, 2:22 am, steve_schef...@hotmail.com wrote:
>
> > On Nov 11, 6:28 pm, vladitx wrote:
> >
> > > Functions with variable number of arguments receive all their variable
> > > arguments through stack.
> >
> > That's c...Re: PID autotuning - not working for heating application
Tim Wescott - 2009-11-10 17:59:00
On Tue, 10 Nov 2009 12:45:24 -0800, pnachtwey wrote:
> On Nov 5, 9:37Â am, "Frank W." wrote:
> > Is there a control engineering expert here?
> Yes.
> > Since all PID temperature controllers have Autotune, there must be a
> > solution for this problem.
> Some auto tuning algorithms a...XPLA3 coolrunner programming tool?
Didi - 2009-11-09 20:14:00
Some time ago I managed to get (under NDA) the programming info
from Xilinx so now I can program one of their coolrunners via JTAG
with my
toolchain (the CPLD on this design is reprogrammable over the net,
i.e. the
board CPU does its JTAG access etc.).
I am now getting to what should be the...Software real time clock using timer unit
alex99 - 2009-11-08 10:35:00
I am trying to implement a software real-time clock on ARM using
the timer module.
I am pretty much unable to do it at this point and was hoping that someone
could point me in the right direction -- perhaps even coded examples that
could serve as a way to better understand it. I C language but ...Re: CPLD + MCU SoC from Cypress, free samples too!
rickman - 2009-11-06 12:15:00
On Nov 6, 12:10=A0pm, Antti wrote:
> On Nov 6, 6:35=A0pm, rickman wrote:
>
>
>
> > On Nov 6, 4:47=A0am, -jg wrote:
>
> > > On Nov 6, 6:01=A0pm, Antti wrote:
>
> > > > ok some explanations: I was talking PSoC 3, yes, and it
> > > > HAS VERILOG programmable gen...FPGA Soft Core CPUs
Jack Klein - 2009-11-05 23:00:00
Parts obsolescence is biting again, and at least one of my EEs is
insisting that we spin replacement boards with soft-core processors in
FPGAs.
There are several things I don't like about that.
First, how robust are these systems. What if power is lost during
updating the configuration dev...Password Protecting SD-Card Data
benn - 2009-11-05 21:20:00
Anyone know how data on an "Secure" Digital Card can be secured?
I'm designing an embedded arm-based board that uses a standard SD/SDHC
Card for storage, and I'd like to secure certain partitions by
password protecting them from reading/writing.
The only built-in protection I've been able to...Re: embedded gcc linker issue--trying to build for m68000 cpu
Chris Burrows - 2009-11-03 17:41:00
"Jim" wrote in message
news:342fac09-113a-4a00-8576-6cfabce7d3f0@p8g2000yqb.googlegroups.com...
>
> I'm using the free Code Sourcery Lite gcc for m68k for a home project
> that involves a micro with 68000 cpu core.
...
...
>
> CodeSourcery is "for" Coldfire which (I think) has a ric...Re: Small Linux board
Theo Markettos - 2009-10-31 15:41:00
Piotr wrote:
> I've set about to do a SHOUTcast Internet Radio, so I'm looking for
> cheap (low than $100) and small board (ARM based, for example), which
> can run simple Linux distributions. It has to contain Ethernet
> Controller, Audio Codec and it will be very nice if it also prov...Re: Compilers on the MPC56xx? Recommendations, warnings?
42Bastian Schick - 2009-10-29 03:00:00
On Wed, 28 Oct 2009 13:47:04 -0700 (PDT), Mark Piffer
wrote:
> On 28 Okt., 21:21, bastia...@yahoo.com (42Bastian Schick) wrote:
> > On Wed, 28 Oct 2009 08:17:23 -0700 (PDT), Mark Piffer
> >
> I suppose with DIAB you are referring to the Wind River compiler? I
Yes, I still can't deal...RapidiTTy
Michael - 2009-10-28 14:06:00
On 7 Nov 2008, 19:18, helix wrote:
> Does any one understand Time Triggered systems? Or have used this
> tool? it only supports LPC2129 and 2294 at the moment
I've only just come across this.
There's nothing particularly complex about time-triggered (TT)
systems. What it means in prac...Looking for Full time position in Embedded Systems
Nripendra Singh - 2009-10-28 12:12:00
Hi,
I have completed Masters in Electrical Engineering from University of
North Carolina at Charlotte and currently I am looking for full time
position in the field of Embedded Systems and software Development.
I have an in-depth knowledge of C/C++, MATLAB and Core JAVA. During my
masters pro...Re: Squeezing bytes out of a struct
Chris Burrows - 2009-10-27 18:24:00
"D Yuniskis" wrote in message
news:hc76jv$n5q$1@aioe.org...
> Chris Burrows wrote:
> > Agreed. Not only working but also maintainable. The sample code posted
> > was anything but that.
>
> Perhaps you could suggest how this could be made *more*
> maintainable? (keeping in mind tha...Re: LPC2888 Flash programming using DFU.
Rich Webb - 2009-10-27 08:48:00
On Tue, 27 Oct 2009 06:06:29 -0500, "aprashant19"
wrote:
> Hi,
>
> I am new to LPC2888. I am using the Olimex development board.
>
> I tried to configure the board in USB download mode (pullup P2.3 to
> Vcc), but Windows is not recognizing it. However the test mode is working
> ...Re: OT: Good SVN How-To?
David Brown - 2009-10-27 04:27:00
Rob Gaddi wrote:
> On Mon, 26 Oct 2009 16:40:09 -0500
> Tim Wescott wrote:
>
> > A project I'm working on just shoved me over the threshold from RCS
> > to SVN -- I just have to track multiple branches on this one.
> >
> > But I'm not a version control maven, I'm a @#$% algorithm g...QVGA touchscreen UI design tools?
Spehro Pefhany - 2009-10-26 16:16:00
What tool options would the cognoscenti suggest for a UI design
incorporating a QVGA touchscreen?
Needs to have buttons, dynamic and static content etc., probably not
animation or video. Probably ARM based, but could be PIC32 or
something else.
Thanks for any suggestions.
...Re: Micro to drive a TFT LCD
Raddix - 2009-10-23 14:53:00
> I have yet to see a TFT display which needs more than 16 bits to show
> all it has. You'll certainly be fine at 16 bpp and likely OK for the
> purposes you state at 8 bpp (but there will be visible limitations
> at 8 bpp if you want to show photos or something, not huge on the
> tiny qvga you ...Re: Microcontroller Recommendations for School Project: Laser Tag
Paul Carpenter - 2009-10-23 05:24:00
In article , someone.pc@ntlworld.com
says...
> >
> > Why do you need wireless?
> >
> > People go round 'shooting each other', unit detects if it has been hit
> > and by which code. At end of game download the table of "been hit by"
> > even via serial links as the equipment is ...Re: Anyone know of a micro w/ these features?
ChrisQ - 2009-10-21 07:58:00
dawydiuk wrote:
> Hello,
>
> I'm looking for a micro-controller that has the following features, but I'm
> having a heck of a time finding one.
>
> -CAN bus
> -16 GPIO
> -8 ch 12-14 bit resolution ADC
> -Low cost
>
ST micro arm devices ?...
Regards,
Chris
...Re: Change names of variables and functions in multiple files?
Chris Burrows - 2009-10-15 20:51:00
"Geek" wrote in message
news:4ad757d3$0$288$14726298@news.sunsite.dk...
>
> I would like to have a program that allows me to change a word in multiple
> files.
>
> I need to change multiple variable and function names (to comply with a
> coding standard).
>
Check your develop...Please tell me what is the cheapest ARM with my request ip(100K annual)
rickee - 2009-10-11 09:41:00
Please tell me what is the cheapest ARM with my request ip.
Our company would like to change current audio application
to embedded system.
after my researching, only 2 way to realize, one is made ASIC Chip
(request very long develop time,and huge investment), another is
buy ARM with specify IP...ARM board features?
Hazard - 2009-10-07 07:52:00
Hello all, I am looking for a controller board using a 32 bit ARM
processor.
I have three different projects I would like to work on, and would like to
use the same base board for each.
I would like a board that would be suitable for all of the following, but
not all at the same time, each pro...Using ARM JTAG Instructions in Debug Mode to Read and Write Memory
Neil Jacobson - 2009-10-01 03:01:00
Hello Folks,
I am writing what I thought to be a simple application to read and
write memory using the ARM JTAG Scan Chain instructions. What I am
finding is that I can read and write registers without issue but whan
I try to use system speed instructions (as required) to do the memory
acces...installing GNU ARM TOOL Chain on Eclipse on a Linux Machine
aquibf - 2009-09-30 18:28:00
Hi,
I am trying to use Eclipse on a Linux machine for ARM development, but can'
get to understand how to install the arm tool chain on to Eclipse.
I am looking for docs, tutorials or direct help that will allow me
configure Eclipse to compile c code for the arm processor.
-----...Re: Encoder programming
Spehro Pefhany - 2009-09-24 11:28:00
On Thu, 24 Sep 2009 11:11:05 -0400, Rich Webb
wrote:
> On Thu, 24 Sep 2009 08:56:26 -0500, "vibz86" wrote:
>
> > Hi folks,
> > Im having great trouble in pic programming and hope someone can help me.Im
> > designing a motor controller circuit using pic 16f877a. Iv got a single
> > en...ARM: JTAG problem on developed ARM board
Mad I.D. - 2009-09-18 04:43:00
Hi.
I designed an ARM7 board with LPC2478 MCU. Unfortunately, JTAG doesn't
work like one would expect.
I can download code to FLASH, I can start debugging, BUT every time it
comes to the first STR instruction I get "Could not stop device"
ERROR. When I don't step the code it goes to some garb...Advice on an IPC mechanism
fatbald1 - 2009-09-17 09:49:00
Hi All,
I've been asked to look into one of our products, its an embedded
device running Linux on an Arm board. One of the major issues is that
of latency, there are many factors which account for this, but one
which I'm concerned about is the use of DBus. This is being used for
the sending...Re: Processor Selection for SoC
David Brown - 2009-09-17 05:21:00
moogyd wrote:
> Hi,
>
> I am looking at selecting a processor for our SoC platform. Currently
> we use an embedded 8051 core (small, low power, low performance,
> cheap).
>
> For our next project, we need more performance, and we are also trying
> to create a platform suitable for ...Re: Developing/compiling software
Grant Edwards - 2009-09-16 12:13:00
On 2009-09-16, FreeRTOS info wrote:
> > > Any suggestions of the compiler software you're using to
> > > write/compile your code and create hex files to upload to the
> > > ATMEL microcontrollers.
> >
> > I prefer gcc. It's the compiler I use for 8 other processors,
> > and I find ...IAR Embedded Workbench License Error
gbenga007 - 2009-09-14 08:48:00
I know this is not exactly a technical question but I'm at my wits end
here. I'm trying to use eval version of the IAR Embedded Workbench for ARM
v5.30. I'm able to install and everything by when I build my project, I get
the following error during linking. Any ideas???
Error[Lt023]: License fai...Re: Using infrared leds and transistors to make a keyboard
linnix - 2009-09-09 20:51:00
On Sep 10, 2:28=A0am, Paul Keinanen wrote:
> On Wed, 9 Sep 2009 01:22:22 -0700 (PDT), linnix
>
> wrote:
> > On Sep 9, 3:11=A0pm, Enrico wrote:
> > > Hi,
>
> > > > This is a confusing question, you cannot use led/trx as buttons ?
>
> > > yes, that's exactly what I would...Counting number of cycles
Ricardo Menotti - 2009-09-09 09:46:00
Dear all,
How can I count de exact number of cycles spent by processor during a
very small code execution?
I'm using an EDB9315A with ARM920T processor running Linux 2.6
Thanks in advance,
...Re: Selection of Microcontroller
Ian - 2009-09-08 04:35:00
On Sep 7, 10:13=A0pm, "manishfire" wrote:
> I want to make a Project in which i want to communicate b/w two USB Flash
> Drive.
>
> In this i want to transfer data form one that will act as Host to the
> Client USB Drive.
>
> Please tell me which Micro controller is best for doing th...Re: Which C dialect should I pick?
FreeRTOS info - 2009-09-08 04:17:00
"Anders Sørensen" wrote in message
news:f7f80fbd-425f-4e0a-8ac2-157d45abb225@k39g2000yqe.googlegroups.com...
> Hi,
>
> I'm looking to writing software for the NXT in either pure C or a
> dialect thereof. I had the option of choosing the Java Optimized
> Processor (JOP) instead of th...