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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 1271 threads matching "spi"
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The most relevant threads are listed first
Re: Stack size calculation - tool support?
WangoTango - 2009-11-17 10:58:00
In article ,
nospam@nowhere.com says...
>
>
> robertwessel2@yahoo.com wrote:
>
> > On Nov 16, 6:23 pm, Tim Wescott wrote:
> > > On Mon, 16 Nov 2009 16:37:47 -0600, Vladimir Vassilevsky wrote:
> > >
> > > > Gerd wrote:
> > >
> > > > > I need to allocate the stack for ...
NXP give price points for their M0 LPC1xxx variants
-jg - 2009-11-17 01:58:00
NXP Cortex M0 cores - an opcode-pruned subset of M3.
Needs custom tool flows.
http://www.nxp.com/news/content/file_1642.html
8KF/2KR 33pins : LPC1111FHN33/101 US$0.65/10K
16KF/2KR 33pins : LPC1112FHN33/101 $0.75
24KF/4KR 33pins : LPC1113FHN33/201 $0.85
32KF/4KR 33pins : LPC1114FHN33/...Re: PID autotuning - not working for heating application
RRogers - 2009-11-14 10:44:00
On Nov 13, 11:45=A0am, pnachtwey wrote:
> On Nov 13, 6:44=A0am, RRogers wrote:
>
> > On Nov 12, 8:43=A0pm, pnachtwey wrote:
>
> > > On Nov 11, 10:18=A0am, RRogers wrote:
>
> > > > On Nov 10, 11:54=A0am, Tim Wescott wrote:
>
> > > > > On Tue, 10 Nov 2009 11:...Re: auto-detecting the resolution of HD44780-based LCD modules ?
whygee - 2009-11-13 10:36:00
Hello,
D Yuniskis wrote:
> whygee wrote:
> > Another post on Usenet pointed me to the fact that the
> > LCD controller has 125uA pull-ups. I knew I missed a fact or two :-)
> >
> > This makes my system a bit more power-hungry.
> > There is the LCD pull-up (equivalent to 40K), then
> ...Re: va_args (va_start, va_end, va_list ) souce?
Jon Kirwan - 2009-11-11 19:34:00
On Wed, 11 Nov 2009 15:28:14 -0800 (PST), vladitx
wrote:
> On Nov 11, 4:42 pm, "Not Really Me"
> wrote:
>
> > Thanks. It could be real useful in the future. My current project is using
> > Wind River Compiler for PPC and it uses registers for the first seven
> > arguments.
> > ...Re: XPLA3 coolrunner programming tool?
-jg - 2009-11-11 16:59:00
On Nov 12, 10:41=A0am, Didi wrote:
> On Nov 11, 11:13=A0am, -jg wrote:
>
> > ....
> > I've sent Dimiter a disk image of an .ABL project compiled into a
> > XCR3128, so he can check what has changed....
>
> While having my morning coffee at 11 PM (still half full) I tried
> t...Time
D Yuniskis - 2009-11-08 01:16:00
Hi,
In keeping with the spirit of posing challenging
(interesting?) questions...
Expressing (calendar) *time* to the user presents
a dilemma. Most devices that are aware of calendar
time also include provisions for *setting* (i.e.,
altering!) the time. And, there are few restrictions
a...Re: What coding standard are you using for C?
D Yuniskis - 2009-11-08 00:55:00
DJ Delorie wrote:
> D Yuniskis writes:
> > I suspect you use a small-ish font?
>
> 7x13 pixels, about 11 point, bold. White on black for terminals,
> black on beige for editing. Black on grey90 for web browsing.
I'm 9x15 -- probably about 12 point. But, it's nice and
"clean" (we...HOW TO PRODUCE LIGHT {Noor(Divine Energy)} IN YOUR HEART.
shariq mangrio - 2009-11-07 17:22:00
The method of producing light.{NOOR}
NO MATTER ANY RELIGION - ALLAH(GOD) IS FOR EVERY ONE.
In prehistoric times stones would be rubbed together to make
fire.
Whereas a spark can also be produced by rubbing two metals
together.
In a similar way electricity is made from water. Similarly by t...Re: Micro SD card / MSP430 interface: write problem
Mark Borgerson - 2009-11-07 13:41:00
In article ,=20
christophe.braillon@free.fr says...
> Hi everyone,
> =20
> I have interfaced a Micro SD card to a MSP430 microcontroller using the=
=20
> SPI mode. Everything worked perfectly fine but I recently had problems=20
> when writing too often into my files.
> =20
> Here is ...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...Re: Progress indicators
Paul E Bennett - 2009-10-30 15:25:00
D Yuniskis wrote:
> I think that windows offloads (?) things like animated
> hourglasses to the "OS" (?). E.g., I suspect the
> application can HALT and the hourglass will keep chugging
> along (Disclaimer: I don't write windows aps so I
> have no idea about the API).
>
> But, tha...Re: Statechart tool to generate C
Cesar Rabak - 2009-10-28 19:40:00
Jim Jackson escreveu:
> Cesar Rabak wrote:
> > Marco escreveu:
> > > On Oct 15, 1:53 am, "Marc Hillman" wrote:
> > > > I'm looking for a Statechart (Harel) tool that supports C code generation,
> > > > and is free (not trial copies). Any suggestions?
> > > http://www.intelliwizard....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: M25P32 failure
Tom - 2009-10-21 00:04:00
In article , Vladimir Vassilevsky wrote:
>
> We are using M25P32 flash memory in one of the projects. It is used as
> a boot memory; normally, it is written only once or twice. However,
> there is a significant percent of failures; almost 25% of parts quit
> working after several wee...AT91RM9200 and SPI Dataflash on CS0 - Linux Kernel
Pelos @ Home - 2009-10-18 15:16:00
Hello,
Does somebody have working Linux drivers atmel_spi and mtd_dataflash ?
I have AT91RM9200 with 8MB spi dataflash connetcted to SPI CS0.
Before I was using at91_spi and at91_dataflash in kernel 2.6.23 (patched
from maxim) and it was workinf fine. When I switched to the atmel_spi
and mtd_...PC104 to QVGA TFT LCD via SPI
Fizzboom - 2009-10-13 06:08:00
I am looking for a very low cost solution to interfacing a single board
computer ,such as a PC-104, running an operating system, that gives it
functional PC capabilites specifically for driving a QVGA TFT LCD and
associated audio channels.
I am currently looking at the Crystalfontz CFAF320240F-T ...Altera USB blasters as USB-SPI interface with ponyprog
Antti - 2009-10-12 03:08:00
hi
a first version of the solution is available from its temporary home
at my brains download area
http://groups.google.com/group/antti-brain/files?hl=en
it does allow unmodified PonyProg 2.07c to use Altera USB blaster to
program SPI devices,
instrucions are in the download archive
its v...Mensuration device parameterization scheme [VERY long]
D Yuniskis - 2009-10-08 15:58:00
Hi,
Apologies in advance for the length of this post. : <
But, it's probably an unusual design issue for most
of the designs that are likely encountered here.
Basically, what I am trying to do is come up with a
*generic*, *extensible* means for configuring "devices"
AT RUN TIME without a ...Re: Experience with Star Quad cable for CAN bus
John B - 2009-10-07 11:31:00
Stef scrobe on the papyrus:
.
.
> But things get a little weirder now. The cable assembly manufacturer
> sent us a cable datasheet which says the cable is 4x1x0.22mm^2 in
> "sternvierer" (german for star quad). Today I searched that cable
> manufacturer's website and found only one cable...Re: [PIC] 16F688 USART ISSUES
Andrew Smallshaw - 2009-10-04 15:44:00
On 2009-10-01, Grene wrote:
> I?m trying to get some PIC to PC communication going using the 16F688,
> but I am not having much luck.
> I grabbed the code below off the internet somewhere. Nothing hooked
> up to the ADC but that?s fine, I don?t mind it spitting out random
> data, as ...Re: USB Host Implementation via device hardware
Bill Davy - 2009-09-30 06:32:00
"sau_sol" wrote in message
news:kqGdnfOwvJN7SF_XnZ2dnUVZ_iydnZ2d@giganews.com...
> >
> >
> > "sau_sol" wrote in message
> > news:W5adnVclzdSZ-CLXnZ2dnUVZ_gCdnZ2d@giganews.com...
> > > Hi all
> > >
> > > I am currently using LPC2138 for my designs.
> > >
> > > now I got a sim...Re: Anyone for a cardboard PC?
ChrisQ - 2009-09-28 06:58:00
Mark Borgerson wrote:
> > Only with the RR Merlin, the Mustang became legendary.
>
> Wasn't the engine on the Mustang water cooled? If the first
> engine overheated, I doubt that the chrome plating had much
> to do with the problem. The problem was more likely due to
> inadequate co...Re: Windows tcp Rx hanging
Paul Carpenter - 2009-09-21 18:05:00
In article , dp@tgi-sci.com says...
> On Sep 14, 9:30=A0am, Dimiter Popoff wrote:
> > On Sep 14, 8:40=A0am, Nobody wrote:
> >
> > > ....
> > > OTOH, the sender should always be able to handle the receiver failing=
to
> > > handle its advertised window size (i.e. window ...Re: Developing/compiling software
ChrisQ - 2009-09-17 06:04:00
David Brown wrote:
> Grant Edwards wrote:
> > 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. I...Re: Selection of Microcontroller
Bill Davy - 2009-09-10 07:20:00
"ChrisQ" wrote in message
news:0g5qm.90530$bU2.55997@newsfe29.ams2...
> Chris Stratton wrote:
> > On Sep 8, 11:43 am, ChrisQ wrote:
> >
> > > > I want to make a Project in which i want to communicate b/w two USB
> > > > Flash
> > > > Drive.
> >
> > > http://www.silabs.com
>...Atmega 128 and AT25F512A flash memory problems
Tumke - 2009-09-10 07:01:00
Heya guys,
I'm trying to get the AT25F512A 512kb flash chip working with an
Atmega128, but unfortunately without any success thus far.
I'm using the AVRlib SPI and SPIFlash .c and .h files to get it going,
however I had to change the SPIByte function in SPIFlash.c into
SpiTransferByte and SpiS...Re: How to read SPI data with FTDI chip FT232R?
Paul Carpenter - 2009-09-09 17:49:00
[This followup was posted to comp.arch.embedded and a copy was sent to
the cited author.]
In article , sven@sven.se
says...
> Hello again.
>
> I'm looking more (intensively) at application note AN232R-01 now.
>
> http://www.ftdichip.com/Documents/AppNotes/AN232R-01_FT232RBitBang...Re: 16-bit SPI trying to read from 22-clock cycle ADC
MK - 2009-09-08 11:04:00
"Bill" wrote in message
news:5gnca5d000ql2jlabkd42od9tv1mcgr9b0@4ax.com...
> Hi,
>
> I'm trying to pull out data from the ADS8320 (a 16-bit ADC by Analog
> Devices. See bottom of page 10 in
> http://focus.ti.com/lit/ds/symlink/ads8320.pdf ) using the SPI in an
> AT91SAM7S256. The ...Re: Flash File System for Dataflash
heindekock - 2009-09-07 15:54:00
Hi Stefan
Before this get totally out of hand, let me just give you a quick
rundown.
The basic Idea is not to tie a File Allocation table to a specific aria
where it will wear out the flash. Rather to consider the file object as a
piece of memory like you would in a linked list. This means you...Re: ADC channels readings
D Yuniskis - 2009-09-01 10:31:00
Hi Boni,
manohar2008 wrote:
> Below is my sample code, through which I am reading voltages on four ADC
> channels, but in all cases I am getting the same voltage levels on all
> channels, that is one channel reading on the other channels.
(reformatted)
> Initiation :
> ADC10CTL1 = ...Re: Sampled Data and Frequency Rejection RC Filter Question
=?ISO-8859-1?Q?Hans-Bernhard_Br=F6ker?= - 2009-08-12 15:30:00
Datesfat Chicks wrote:
> "Tauno Voipio" wrote in message
> news:sFAgm.92$a02.64@read4.inet.fi...
> > The Nyqvist rule states that you have to get rid of
> > all frequency components at and above fs/2 (500 Hz).
> This doesn't immediately make sense to me in our application. If we
...Re: TFT LCD controller
news.tin.it - 2009-08-11 13:25:00
Scriveva Bob martedì, 11/08/2009:
>
> You and the OP have different concepts of controller. The panel linked above
> has a 40 pin connector. It's a pretty typical 6 bit/color interface. 500+
> pins would be a bit of overkill.
I think so.
I don't need to tie 500+ pins, as that display ha...Re: Most powerful microcontroller in a DIP package?
RevAaron - 2009-08-04 11:55:00
Apologies for the necromancy, but what the hell!
> What are the biggest flash microcontrollers available in a DIP format
> in terms of mips, flash size, and ram size? This is for a small
> quantity of devices built on prototype boards.
Have you looked at Parallax's Propeller? No clue if it's...Re: Best Value for Schematic Capture & Layout Software ???
Grant Edwards - 2009-07-29 12:27:00
On 2009-07-29, Peter Keller wrote:
> I used gEDA from the point of view of a hobbiest and I must
> say the pipeline from schematics to a printable PCB board is
> quite complex--but it worked.
That's what discouraged me from using gEDA for a small "hobby"
board: the workflow wasn't at ...Re: IEEE 1284 (parallel port) slave to USB
2009-07-28 14:57:00
On Jul 28, 2:49=A0pm, "delario" wrote:
> i need to find a chipset that converts from parallel slave port protocol
> to USB. does this exist?
You need to clearly specify what you want to do.
For example,
1) PC with a USB port controlling a parallel printer (buy it off the
shelf).
...Re: RS485 - MODBUS or PROFIBUS or ....
Not Really Me - 2009-07-23 10:37:00
Vladimir Vassilevsky wrote:
> eeboarder wrote:
> > I am going to work on a project involving multiple devices on the
> > same network(3 or more). One device will have user input and
> > display(master). The other devices(slaves) will just collect sensory
> > data and possibly process PID c...Re: BIOS vs bootloader
larwe - 2009-07-23 08:11:00
On Jul 23, 7:48=A0am, "shani" wrote:
> I am trying to understand the difference between a BIOS and bootloader
> from an embedded system's perspective. In particular, the system we are
Semantically the difference is - a BIOS is code that remains resident
after boot time, and can be used ...Denx Linux 2.6.19.2 and MicroSys CR825/PM827
gchauvet - 2009-07-21 10:38:00
Hi all,
I use BuildRoot and Linux 2.6.19.2 (Denx kernel) on a MicroSys CR825/
PM827 board, but Linux didn't recognize my 32M flash (4 Intel
28F640C3). I have also tried the pm82x_defconfig profile but Linux
crash after line "NFTL driver: nftlcore.c $Revision: 1.98 $,
nftlmount.c $Revision: 1....Re: Toggling GPIO Pins very quickly
larwe - 2009-07-20 09:24:00
On Jul 20, 8:05=A0am, "TheJokerV" wrote:
> Hey everyone, I'm working with an MSP430f2012 chip and am tryign to
> generate a delta sigma bitstream using a gpio pin. Unfortunatly whenever =
I
> try to toggle the pin at a rate faster than 10kHz, the pin appears to not
> be able to fully ris...