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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: internet capable PIC

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: Fate of PIC32 If Microchip buys Atmel MPU business.

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...Re: Microchip & OnSemi want to buy Atmel?

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...ISR in SoC

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: Need good quality Audio output through LPC21xx controller

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= ...Re: 40 core embeddified processor

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...Best low cost uP for full Linux

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...Re: Atmel

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...Hardware I2C block on PXA (XScale): Hangup??

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: Which 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...Re: Querys regarding Flash File system

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...Serial port problem on ARM board

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: How to create a sine lookup table...

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 ...Re: can u Help me?

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...SD card in 4-bit mode

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...Re: 32-Bit Microcontroller for New Project

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 ...ST semi RTC M41T94

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: (New York) Trade ARM9 EVBs for ARM7

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: 68705U/R ,  misc  register function

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: google maps street view

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: Micro Controller Advice/Help Needed

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: Can PIC/AVR serve as minimal USB host?

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: Best solution to count RPM

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: WinXP

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: Looking for DAQ system, 0Hz to 1kHz

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: Variable reluctance motor drive?

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: Affordable PCB Layout Software ???

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: Recommendations for a Quadrature Decoder IC or MicroController

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 ...Re: computer-driven fans II

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...OTT - Software Developer (Embedded Graphics)

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: 32-bit Microcontroller for $1.00

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: Finding power - gnd shorts

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. > ...Re: Micro-SD card  initialisation-problem

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...Good hobbyist VGA camera module?

code for SPI test for MSP430

07:00 03-07-08
can anybody guide me to write SPI communication test code for MSP430? ...code for SPI test 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...Re: Faster than TI C2000?

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...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...AC spike go pass XFRM and regulator to reset CPU [Part 2]: It is irradiated?

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.....Best buy linux comp. CPU ??

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...Re: NAND flash misery
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