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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 1201 threads matching "avr"
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The most relevant threads are listed first
Re: Fate of PIC32 If Microchip buys Atmel MPU business.
linnix - 12:43 06-10-08
On Oct 6, 8:51 am, Dan Ash wrote:
> Not that anyone can do anything but guess what might happen, but if
> Microchip buys Atmel's MPU business, what is the prognosis for the
> PIC32. I bought some PIC32 tools and invested time learning the
> family, and now it may go away or new variant d...
Re: Microchip & OnSemi want to buy Atmel?
Jim Granville - 17:20 02-10-08
Wim Lewis wrote:
> According to this, Microchip wants to buy Atmel (and split up its various
> lines, selling some of them to OnSemi) ---
> http://preview.tinyurl.com/4ltdbb
> http://blog.makezine.com/archive/2008/10/microchip_along_with_onse.html
>
> Atmel seems uninterested, t...Re: libjpeg + cortex m3
Ulf Samuelsson - 11:57 01-10-08
"michwolo" skrev i meddelandet
news:QcydncfiCdMPTH_VnZ2dnUVZ_vjinZ2d@giganews.com...
> Hello
> Does anyone make cross compile libjpeg to cortex m3 core. I trying but
> have a question. arm-elf-gcc or arm-none-ebai-gcc haven't library libc.a.
> When I compile whit options export CC=arm...Re: How connect PC Embedded to MDB (Vending Machine)
Rich Webb - 09:19 01-10-08
On Wed, 1 Oct 2008 15:45:14 +1000, "PhilW" wrote:
>
> "Rich Webb" wrote in message
> news:vlj5e4t6lqqprmagrakv9tp44joer11otm@4ax.com...
> > On Wed, 1 Oct 2008 09:42:46 +1000, "PhilW" wrote:
> >
> > >
> > > Ok, then you have no choice but to write low level code to fudge the 9b...Re: How connect PC Embedded to MDB (Vending Machine)
Rich Webb - 21:25 30-09-08
On Wed, 1 Oct 2008 09:42:46 +1000, "PhilW" wrote:
>
> Ok, then you have no choice but to write low level code to fudge the 9bit
> char by using the mark/space parity control.
Sorry for jumping in here so far down in the thread, but to throw out
another option for the OP: Add a microcon...Re: Need good quality Audio output through LPC21xx controller
Ulf Samuelsson - 14:00 30-09-08
skrev i meddelandet
news:0f148d36-bf58-48e7-9a34-1db113920ee2@v15g2000hsa.googlegroups.com...
On Sep 30, 6:56 pm, Vladimir Vassilevsky
wrote:
> angadd...@gmail.com wrote:
> > We are working on a project based on Vehicle tracking system.In one of
> > our module we are using audio(...Atmel
Peter Keller - 01:05 23-09-08
Hello,
I've done some PIC development before, with the PIC16F690, PIC18F4321,
etc. and I'm thinking about trying out the Atmel processors since I've
heard they have a flat memory space (no banks), a software stack, and
other things I am interested in. What would be a good entry level atmel
mi...Re: Network Processor
21:27 14-09-08
On Sep 14, 10:13 am, Frank Buss wrote:
> So looks like you are searching a general purpose CPU with embedded
> ethernet?
Atmel seems to be targeting some category of that with the AVR32;
their lower cost eval board has two separate ethernet interfaces and
is geared to bridging applicat...AVR tiny13 ADC0 syntax problem
Martin Griffith - 10:34 13-09-08
The ADC0 is shared with the external reset pin, and I'm utterly
confused by atmels documentation on now to change it over from rst to
ADC function.
I don't want to set the no external reset fuse
I'm using GCC + studio4. Been to avrfreaks, I found nothing there.
Any hints, anyone?
marti...Re: IPv6 vs. IPv4 for embedded devices
Andrew Smallshaw - 10:50 12-09-08
On 2008-09-12, Dirk Zabel wrote:
> Hi,
> I am just gathering informations on how to equip an existing device with
> an ethernet interface in order to enable remote tcp/ip access. Most of
> the available tcp/ip stacks as well as chips with built-in tcp/ip
> functionality I found so fa...Re: New sub-$2.00 60MHz Piccolo C2000 Family from Texas Instruments
Ulf Samuelsson - 00:06 11-09-08
"Bill Giovino" skrev i meddelandet
news:g6OdndLUw6W1YVrVnZ2dnUVZ_v_inZ2d@comcast.com...
> "MK" wrote...
> >
> > "Bill Giovino" wrote...
> > > Texas Instruments has introduced a new C2000 32-bit microcontroller
> > > family:
[snip]
> Mike, after reading your above comments tod...32-Bit Microcontroller for New Project
00:35 08-09-08
I'm about to embark on a new project that will require a 32-bit
microcontroller. I've spent the last month evaluating the merits of
the various choices architecturely, and have a pretty good idea of
what's out there. It's come down to development environments, and I'd
like to get some first-hand...TO ULF SAMUELSSON: Why "sigh" at uCLinux?
C. J. Clegg - 17:42 06-09-08
Good afternoon, Ulf.
Back in November of 2007, in comp.arch.embedded, you wrote:
"I see as many ARM9 users as ARM7 users today and neither the CM3 or
the uC3k will meet the performance of the ARM9 and neither will run
Linux/WinCE. - uCLinux? ...sigh!"
I've only started reading about ...Re: Used interrupts on both 68k & PIC, want 68k w/onboard memory & JTAG/BDM
larwe - 11:06 05-09-08
On Sep 5, 10:41=A0am, David Brown
wrote:
> That may be the impression *you* have got of the ColdFire, but it is
> totally at odds with reality. =A0The ColdFire is very much a major 32-bit
Mere availability of a wide range of devices is an orthogonal issue to
the matter of obsolescence....Re: Compiling code
Tim Wescott - 15:41 30-08-08
andersod2 wrote:
> The schematic shows a programmer port on there, so you might not need
> an eval board to do the programming...may just be able to plug the
> cable in and program the code right into it...PIC should have a lot of
> different tools you can download for compiling and programm...Re: (New York) Trade ARM9 EVBs for ARM7
linnix - 23:33 28-08-08
On Aug 28, 9:23 am, larwe wrote:
> On Aug 28, 3:28 am, "MK" wrote:
>
> > > question (STR912FW44X6) is at best casually documented and requires a
> > > full day of frustration just to get an LED blinking. So much for
>
> > I can understand that you might not like the board (I h...ARM9 & Wifi & webcam
Mariusz Koniarz - 06:00 21-08-08
Hello.
I just had bought computer board, processor AT91SAM9260, 64MB ram, 512
MB flash & 8Gb SD card (debian,custom build kernel 2.6.23 witch patches).
And I have crazy idea.....
question:
ndiswrapper work well under ARM9? is there any tutorial howto
cross-compile&config ndiswrapper f...Can PIC/AVR serve as minimal USB host?
17:46 06-08-08
Is it possible to use either AVR or PIC uC with hardware USB to read blocks
from say an optical drive or such ..? (implicit usb host)
Doesn't need to be standards compliant. Ugly hacks can be used ;)
...PIC/AVR PWM + RS232 simultaneously?
17:36 06-08-08
Are there any sub 10 USD AVR or PIC uC that can do hardware PWM at the same
time as hardware RS232 ..?
The source of my question is that I suspect that same timer is used both for
bitrate generation and for PWM frequency+duty cycle.
...Re: low pass digital filter on a fixed point microcontroller
14:44 05-08-08
On Aug 6, 5:14 am, Johnny Chang wrote:
> So I have a microphones that takes in sound and transmits them back to
> me, but I also perform analysis on them to find directionality on an
> AVR which uses fixed point arithmetic. Due to the spacing, I've found
> that I need to actually cut off...Re: porting FreeRtos to atmega2560
06:41 04-08-08
Hello,
I've had the same problem and after reading your post and ATMega2560's
datasheet
I changed pxPortInitializeStack() in port.c as follow:
usAddress = ( unsigned portLONG ) pxCode;
*pxTopOfStack = ( portSTACK_TYPE ) ( usAddress & ( unsigned
portLONG ) 0x000000ff );
pxTopOf...PC undefined for WINAVR???
espian - 01:06 03-08-08
I'm in the process of porting a graphics library downloaded from
avrfeaks.net from AVR Assembler to avr-as.
I'm now getting undefined references to PC. Does GAS not have a PC
symbol defined? Can anyone point me to something that I'm doing wrong
that would keep PC from not being defined? Can...Re: New Yahoo Group for Blackfin DSP/MCU
00:48 03-08-08
In article , Vladimir Vassilevsky wrote:
>
> problems@gmail wrote:
> > Vladimir Vassilevsky wrote:
> >
> > > I've been doing the designs with Blackfin since 2003 and still do,
> > > and I can tell you that Blackfin is same as crap as all other MCUs
> > > and CPUs.
> >
> >...Re: Affordable PCB Layout Software ???
Guy Macon - 10:58 31-07-08
Robert Lacoste wrote:
> Give a try to Proteus (www.labcenter.co.uk), we have switched
> to it from more expensive packages a couple of years ago and
> we are delighted. Especially with the mixed signal VSM simulator
> of course but the PCB design suite has all the features we
> need...Re: computer-driven fans II
Frank Buss - 22:00 30-07-08
Ron Ford wrote:
> It really helped me to see the pictures that come with these listings.
> Temperature sensors look like cockroaches with eight legs. The first pin
> is on the left as you read the name left to right, and it is symmetric
> about the axis that would be the length.
>
> ...Procyon Library for Atmel AVR MCU - =?ISO-8859-15?Q?I=B2C?= problems
=?ISO-8859-15?Q?R=FCdiger?= Leibrandt - 11:16 30-07-08
Hello!
I am new to programming and am struck with the Manual for the Procyon
Library for Atmel's ATMega MCUs. It basically provides functions for all
the interfaces and functions available on the Atmel MCUs.
Problem is as follows:
I have a Thermopile array sensor - TPA81 (
http://www.robo...Re: Recommendations for a Quadrature Decoder IC or MicroController
Peter Harrison - 04:58 30-07-08
benn wrote:
> I have an atmega16 that interfaces to a motor with a quadrature
> encoder sensor. Turns out the frequency of the pulses are much more
> than my little 4Mhz can handle (the micro does other things as well!)
> As a result, the motor control isn't very accurate, nor does it reac...AVR bootloaders
Martin Griffith - 18:09 28-07-08
Just spent an hour googling
I'm trying to find a reasonable BL for the enduser, preferably using
USB/FTDI or the silicon labs thingy/equivalent.
Just to update their AVR, nothing special, apart from "simple" and
probably a lot of Mac users
Using GCC Winavr, Ponyprog and atmel Studio4
...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: computer-driven fans
Ron Ford - 21:40 21-07-08
On Mon, 21 Jul 2008 10:40:51 +0200, Frank Buss posted:
> Ron Ford wrote:
>
> > My question is what is the minumum cost of entry? I saw other numbers that
> > were ten times as much.
>
> I didn't tried it (I have some AVRs, but no time so far to try it), but
> looks like this is a ...Re: 32-bit Microcontroller for $1.00 -Guy Macon
Jim Granville - 15:45 21-07-08
Guy Macon wrote:
> 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.")
No sales numbers on t...CompactFlash write speed
A.D. - 13:59 18-07-08
Hi all!
I'm designing a high speed datalogger that should store
a continuous data stream (about 2MB/s) for about 30
minutes. I'm using a Compact Flash card to store data
samples (no FAT, just raw data with a continuous
addressing, in order to keep all as fast as possible).
The CF I tested is r...8951 / AVR controller circuits
CCD - 09:51 17-07-08
Hi,check out an AVR interfacing example and 400hzsignal generation
using 89c2051 microcontroller, here:
http://dharmanitech.blogspot.com
...Re: Simple C question...entering binary
Walter Banks - 11:06 15-07-08
David Brown wrote:
> Walter Banks wrote:
> > Most of the embedded people did something similar
> >
> > #define b00000000 0
> > #define b00000001 1
> > . . .
> >
> > before 0b....
> >
> > was implemented as an extension in most compilers including ours.
> >
> ...AVR, polling INT0 IRQ bit - help?
larwe - 14:27 10-07-08
I'm porting some old code that uses a pin-change interrupt flag as an
edge detector. The new target micro is an AVR (ATmega169). I'm having
real trouble getting the INT0 logic to work like I think it should.
I set DDRD = 0xe5 (INT0 is on bit 1 of port D), PORTD = 0x20, and
EICRA = EICRA | ISC...Timer ticks occurring much more faster
ratemonotonic - 12:04 09-07-08
Hi All ,
I am implementing RTC code on an AVR Atmega2560 I have a 32Khz clock
crystal to TSOSC1 which is used by timer2 in async mode. I have
configured the clock divide to 8 so the clock to the timer is 32768/8
= 4096. It is a 8bit so a interrupt should be generated every 16hz
(4096/256).
...Re: Can You Guess Which Micro This Is?
donald - 22:20 04-07-08
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 chips, including the microcontroller, have had their ...Re: Faster than TI C2000?
Vladimir Vassilevsky - 00:00 03-07-08
"CC" wrote in message
news:N4Wak.10936$cW3.9354@nlpi064.nbdc.sbc.com...
> Vladimir Vassilevsky wrote:
> >
> > Chris Carlen wrote:
> >
> > > Even though I am able to do what I want with the existing 150MHz
> > > TMS320F2812 digital signal controller (DSC), I am always eager to ...Re: 24 bit math on 8 bit micros
Ulf Samuelsson - 04:34 02-07-08
aamer wrote:
> Hi Friends,
>
> I was trying to figure out some solution for multiplication of 24bit
> data with a 24 bit data on 8 bit microprocessor.
>
> I got the idea like multiplying first bytes of both data and then the
> next bytes taking care of carries and finally put it in to ...Re: Best buy linux comp. CPU ??
MikeWhy - 10:27 01-07-08
"MMJ" wrote in message
news:4869e41c$0$56794$edfadb0f@dtext02.news.tele.dk...
> Hello all,
>
> I am doing some preliminariy research on finding a suitable embedded CPU
> for our next project on my workplace. The product of the product is in the
> 25k-50k range and somewhat costsensi...