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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 1111 threads matching "spi"
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The most relevant threads are listed first
Re: internet capable PIC
Neil - 01:03 11-10-08
2Penny wrote:
>
> Hey Folks -
>
> I thought I saw a PIC 18 processor that had been particularly
> groomed for a role providing internet capability for small
> home appliances and embedded systems. Is this a real
> processor ? If it's just some software I can put...
Re: Fate of PIC32 If Microchip buys Atmel MPU business.
-jg - 05:00 09-10-08
Ulf Samuelsson wrote:
> "Jim Granville" skrev i meddelandet
> news:48ea5a43@clear.net.nz...
> > 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 bough...Re: Microchip & OnSemi want to buy Atmel?
linnix - 18:35 06-10-08
On Oct 6, 2:39 pm, lowcost wrote:
> Ulf Samuelsson ha scritto:
I didn't see your original post, but you (Ulf) should take a look at
Atmel's example for the USB162 composite device (Mouse, Keyboard and
Mass Storage):
>
> > Funny, I got a ~700 byte ATtiny13 assembler program
> > fr...ISR in SoC
stararvigu@gmail.com - 04:48 03-10-08
Hi all,
My name is Ravi. I am working on system integration and testing.
I am using SDCC compiler for my C code compilation. I have different
peripheral module like i2c, spi, uart, memory controller, lcd.
Inside ISR, based on status of interrupt controller i am setting
flags, and based on these...Re: Need good quality Audio output through LPC21xx controller
11:04 01-10-08
On Sep 30, 11:00=A0pm, "Ulf Samuelsson" wrote:
> skrev i meddelandetnews:0f148d36-bf58-48e7-9a34-1db=
113920ee2@v15g2000hsa.googlegroups.com...
> On Sep 30, 6:56 pm, Vladimir Vassilevsky
> wrote:
>
>
>
> > angadd...@gmail.com wrote:
> > > We are working on a project base...Re: 40 core embeddified processor
13:53 30-09-08
On Sep 26, 4:47=A0pm, "Wilco Dijkstra"
wrote:
> The Propellor is pretty odd as well (2 operands, 9-bit direct memory addr=
ess)
> and =A0also uses an unconventional programming language. Personally I'd p=
refer
> a fully featured core with single cycle instructions capable of running C=
...Best low cost uP for full Linux
m - 09:33 26-09-08
I am trying to select a uP to build into an embedded device. Here are
the requirements:
- Run full Linux with MMU support
- External bus support for more than 256MB of RAM, preferably DDR2
- Support for 64MB+ of NAND FLASH
- Support for 8MB of NOR FLASH
- I2C (2 ports ideal, one is OK)
- S...Re: Atmel
RumpelStiltSkin - 12:47 23-09-08
"Peter Keller" wrote in message
news:48d87934$0$9897$80265adb@spool.cs.wisc.edu...
> 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 b...Hardware I2C block on PXA (XScale): Hangup??
jasontiller - 17:47 22-09-08
Hello, All, :)
I'm having tons of trouble controlling some simple I2C peripherals via
a Marvell (nee Intel) PXA270 processor. This processor has a built-in
I2C controller, with simple configuration via a few bits in a single
register. When looking on a scope, I'm seeing the bus completely ha...Re: Which development board and LCD?
=?windows-1252?Q?Glenn_M=F8ller-Holst?= - 14:01 22-09-08
abcd12 wrote:
> Hi!
>
> I am building a simple monitoring system, that would read data from few
> sensors and display them on a colour 320x240 LCD. As far as the
> microcontroller goes, I'll probably go with ARM9 or ARM7. Do you have any
> suggestions about the development board and LCD...Re: Querys regarding Flash File system
ssubbarayan - 11:43 20-09-08
On Sep 20, 12:20=A0am, LittleAlex wrote:
> On Sep 19, 5:27 am, ssubbarayan wrote:
>
> > Dear all,
> > =A0 =A0 =A0 =A0 =A0I am new to flash file system.Can some one point me =
to some
> > basics regarding flash file system?I am not aware whats flash file
> > system and the need...Serial port problem on ARM board
peter_H - 21:37 18-09-08
Hi, I bought a ARM920T based dev. board from
http://www.developmentboard.net couple weeks ago. It came with a manual and
in these days I"m following the manual to test it, now I get a problem. I
am using Windows VISTA OS on Dell laptop which is not having a 9pin serial
port, after consulting the ven...Re: How to create a sine lookup table...
Spehro Pefhany - 09:25 12-09-08
On Fri, 12 Sep 2008 08:13:15 -0500, "kvrajasekar"
wrote:
> Hi,
>
> Can anyone guide me to create a sine lookup table according to the adc
> value.I am new to PIC.so plz help me.
>
> I am designin a UPS control with PID.here sine wave is generated according
> to the adc and triangle wa...Re: can u Help me?
Jim Granville - 06:01 11-09-08
kalakkumkarthikeyan wrote:
> Hi Dear all..
>
> Actually i have a doubt to configure a relaxation oscillator using
> simple inverter.
> Have u any idea.. ?
Ingredients: Google Spice HEF4541 HEF4060
For an 'A' explain how the 4060 Osc differs from the 4541 Osc,
and why might that ...SD card in 4-bit mode
Jookie - 06:14 09-09-08
Hello all,
I'm in a need for the higher transfer speeds with SD card, I'm running the
card at 25 MHz via SPI and it works well, but I still need higher transfer
speed.
I would like to use the 4-bit (parallel) mode of the communication with
the SD card, and I know that to do that one has to b...Re: 32-Bit Microcontroller for New Project
13:27 08-09-08
On Sep 8, 1:27=A0am, larwe wrote:
> I find this really hard to believe, but okay, fine:
Why is that so hard to believe? All of these microcontrollers are more
similar than different. They all come with 256-512K of Flash, 32-64K
of RAM, all have I2C, SPI, ADC, GPIO, timers, and other periph...ST semi RTC M41T94
Martin Griffith - 10:19 08-09-08
I'm waiting for a couple of M41T94 real time clock chips to arrive, so
I'm scribbling some 8052 C code in advance. It's an SPI ic.
Any gotchas on this RTC?
Thanks
martin
...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...Re: 68705U/R , misc register function
Mel - 10:04 16-08-08
k100abs@gmail.com wrote:
> I am studying mc68705R/U3 chip which has a miscellaneous register
> at address $00A (or 10).
>
> I could not find any info. about the function of each BIT of that
> register. even Motorolla old manual
> just give me the name and address of it.
>
> Co...Re: google maps street view
Don McKenzie - 16:54 12-08-08
> > Most curiously though, if you move one "frame" past the garage you can
> > clearly see the shots were taken at different times (different parked
> > cars etc).
> > http://www.google.com/maps?q=caltrain+station&f=l&near=&sll=37.444591,-122.154257&sspn=0.012436,0.027895&hl=en&layer=c&ie=U...Re: Micro Controller Advice/Help Needed
deanvesuvio - 13:26 12-08-08
Rich - It seems like the LPC2138 or LPC2136 might provide a very simple
solution. Correct me if I'm wrong, but it looks like with one of these
chips, all I'd need to do is get a UART RS232 interface chip to put in
between the LPC213X and my XE2422H. Add on a power adapter and an RJ-11
jack, and tha...Re: Can PIC/AVR serve as minimal USB host?
Bill Davy - 11:42 07-08-08
Or, if you have SPI already, the MAX3421E.
"MK" wrote in message
news:CeydneQUo5ALXwfVnZ2dnUVZ8uWdnZ2d@bt.com...
>
> wrote in message news:g7d640$j7n$1@aioe.org...
> > Is it possible to use either AVR or PIC uC with hardware USB to read
> > blocks
> > from say an optical drive ...Re: Best solution to count RPM
rickman - 23:13 04-08-08
Joerg wrote:
> Tim Wescott wrote:
> > N1 wrote:
> > > I'm working on a data acquisition system for byke/car engine.
> > > I'm trying to figure out which would be the best way to count RPM and
> > > I've thought to two different ways:
> > > 1- using an interrupt routine attached to a...Re: WinXP
11:48 04-08-08
On Aug 3, 3:56 pm, Dombo wrote:
> It depends on the nature of your device, but you will never be
> absolutely safe, certainly not with Windows XP, even if you do update
> regularly. But you could improve safety a lot when let your application
> run under a user account with minimum priv...Re: Looking for DAQ system, 0Hz to 1kHz
Joerg - 13:45 31-07-08
Jim Burke wrote:
> Jim Burke wrote:
>
> THanks to all who took the time to reply.
>
> Dataq's DI-71x series would work for this app.
> But Joerg's suggestion to use a LabJack U3 and a laptop wins because
> I happen to have both. Unfortunately my old U3
> doesn't support streamin...Re: Variable reluctance motor drive?
John Speth - 11:57 31-07-08
wrote in message
news:74a922b3-8485-4569-a99b-81517d94de63@34g2000hsf.googlegroups.com...
> On Jul 30, 8:36 am, "John Speth" wrote:
> > Hi group-
> >
> > I've been experimenting with various stepper motor samples for personal
> > education. One of my motor samples is what I'm pr...Re: Affordable PCB Layout Software ???
=?ISO-8859-15?Q?R=FCdiger?= Leibrandt - 11:35 30-07-08
Cadsoft: EAGLE
For free in use for private, noncommercial and with limited capabilites in
PCB-size and layers. I use it professionayl at work in a payed-for version
able to do bigger PCBs and more layers than the outer two.
Blackwater wrote:
> Um ... has there been some kind of conspirac...Re: Recommendations for a Quadrature Decoder IC or MicroController
Jonathan Kirwan - 04:22 30-07-08
On Tue, 29 Jul 2008 23:18:06 -0700 (PDT), 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 c...Re: computer-driven fans II
Stef - 18:12 28-07-08
In comp.arch.embedded,
John Speth wrote:
> > > > > Jeepers Mr Peabody, there's a whole bunch of interface circuitry
> > > > > information and motor specifics missing!
> > >
> > > > I have no idea what to even google for to find out more. Who said
> > > > "jeepers, mr. peabody," rocky ...OTT - Software Developer (Embedded Graphics)
Precision Recruiting Services - 11:51 25-07-08
What they will offer you:
Intellectually rewarding growth, through training and mentorship!
Entrepreneurial vision!
Really Cool Technology!
A Great Place to Succeed!
An extremely active social committee!
What they do:
This global organization has a spirit of innovation that allows
deve...Re: 32-bit Microcontroller for $1.00
CBFalconer - 20:16 23-07-08
Wilco Dijkstra wrote:
> "Jim Granville" wrote:
>
... snip ...
>
> > It does make very sound sense, when a customer demands it!
> > Automotive customers DO have clout :)
>
> Some may want it but it is hardly as important as you're trying
> to spin it. The fact is there are virtua...Re: Finding power - gnd shorts
rickman - 12:50 23-07-08
On Jul 23, 11:51 am, CBFalconer wrote:
> Paul Keinanen wrote:
> > Didi wrote:
>
> > > Yes, that's a clear advantage of the 110V (one can expect twice
> > > the current at 220 is needed to blow the fuses), but 220 is still
> > > more fun for this application - sparkles, smoke, ...Re: Micro-SD card initialisation-problem
Mark Borgerson - 00:52 18-07-08
In article ,
address@not.available says...
> Hello all,
>
> I've connected a Micro-SD card to my printerport (using very simple 5v to
> 3v voltage-step-down by three diodes and a resistor, signal step-down by a
> 1k8, 3k3 resistor combination), and am attempting to read from it.
> ...Good hobbyist VGA camera module?
larwe - 15:44 16-07-08
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 preference.
I need two of them, and perhaps two spares, to build a de...code for SPI test for MSP430
07:00 03-07-08
can anybody guide me to write SPI communication test code for MSP430?
...Re: Faster than TI C2000?
Jim Granville - 23:02 02-07-08
CC wrote:
> At present I am generating 1us resolution arbitrary pulse sequences
> using compare matches. There must be no jitter so HW compare match to
> generate the edges is essential. I might need to make a waveform like:
>
> START
> delay 4us
> high 15us
> low 12us
> hig...Serial Flash
Jack - 08:32 02-07-08
For an application I need to store a large amount of data (ca. 3MB). A
serial flash could be a good idea (I don't need to erase very often,
and if I erase, I will erase all the data at once).
I found Atmel's products. But there is a problem: Atmel produces 2
types of serial flash: Serial Flash...AC spike go pass XFRM and regulator to reset CPU [Part 2]: It is irradiated?
Rodo - 21:28 01-07-08
Hi all,
A while back I posted a problem I was having with a spike (see original text
below). Someone suggested that the spike would be in the ground line as
well. So I connected the scope probe and ground to the ground of the circuit
and yeap, there it was. I felt rather silly connecting th...Best buy linux comp. CPU ??
MMJ - 04:00 01-07-08
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 costsensitive. What we are looking for is an
embedded CPU bassed on a semi-standard core (ARM, MIPS,PPC.....Re: NAND flash misery
Dombo - 05:59 30-06-08
David Brown schreef:
> Didi wrote:
> > Dombo wrote:
> > > Didi schreef:
> > > > Vladimir Vassilevsky wrote:
> > > > > ...
> > > > >
> > > > > I was under impression that flash is more reliable then HDD; now I see
> > > > > that it is not so. Do you know how reliable are the IDE flash...