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2005-09-01 by Lasse Madsen
Hi Don, I can agree on all counts! In my next life I want to be a handy man that only sweeps the walkway the reason being that even if a tornado had been raging war on the side walk I would always know, that when the clock goes 16:00 I'm out of there in an instant and people can
2005-09-01 by Don Ingram
> Sorry to keep the thread going I'm just so pissed off :/ > > Regards > Lasse Madsen > > Welcome to embedded development. I too had wondrous expectations when I started way too long ago. Pay good money, get reliable tools, chips always worked as in the data sheet. Reality was a
2005-08-31 by Ivan Vernot
Stefan, When you say '5V tolerant' I understand that a micro (@5V) can write to the Flash (@3.3v). But what do you do for the data coming OUT of the data flash? So you just use a pull-up resistor, or something else? Ivan. ----- Original Message ----- From: "Stefan Wimmer" To: Sen
2005-08-31 by Dennis
ECL was the high speed emitter coupled logic. Great speed, great amounts of heat. It was used quite a bit in military equipment for a period of time and supercomputers. Fell out of vogue. D ----- Original Message ----- From: "Don Kinzer" To: Sent: Wednesday, August 31, 2005 6:29
2005-08-31 by Dennis
Usually rely on the AVRFreaks or go to avr@atmel.com to ask a question. I was out of the processor realm for about 15 years and had to re-wet my feet. AVRFreaks tend to be a bit contentious at times but there is a wealth of knowledge and experience. No personal experience with th
2005-08-31 by Chuck Hackett
> From: Dennis > > Data sheet definitions are sometimes wrong as are manuals. I found that out > the hard way with the mega168. > .... Hmm, I'm a newbie and I'm starting a project on an mega169 (Butterfly). Does the 169 have the same problems? I'd hate to spend hours assuming I'm
2005-08-31 by Dennis
Data sheet definitions are sometimes wrong as are manuals. I found that out the hard way with the mega168. However, a logic 1 is presumed to be the "high" logic 1 and a logic 0 the "low". Remember ECL. Bassackwards. I'm working on a system where the ground is -5v dc generated by
2005-08-31 by John Samperi
At 04:15 AM 1/09/2005, you wrote: > > Ummm - a low voltage (0v) is a logic zero. A high voltage (5v) is a > > logic one. > > Not according to AVR data sheets, it's not. The convention of using logic 0 for 0 volts and logic 1 for a high (be it 5, 1, 3 12 or 100V) was established b
2005-08-31 by Don Kinzer
> The convention of using logic 0 for 0 volts and logic 1 for a high... Actually, there are several nested conventions. One is positive logic vs negative logic. In the former, the most positive voltage is a logic 1 while in the latter the most negative voltage is a logic 1. Once
2005-08-31 by James Washer
Perhaps the original poster is confusing 1=output 0=input for DDR On Wed, 31 Aug 2005 11:35:08 -0700 Dave Hylands wrote: > Hi Thomas, > > On 8/31/05, Thomas Keller wrote: > > On Wed, 2005-08-31 at 10:36 -0700, Dave Hylands wrote: > > > > Perhaps I am missing something, here. AVR
2005-08-31 by Lasse Madsen
So I purchased "The Cable AVR" and what a cable it is... finding out after plugging in the damn thing that it doesn't have a STK200 interface connector so my board power supply went straight where that damn cable was going - To hell if it doesn't get going soon After researching
2005-08-31 by Dave Hylands
Hi Thomas, On 8/31/05, Thomas Keller wrote: > On Wed, 2005-08-31 at 10:36 -0700, Dave Hylands wrote: > > > Perhaps I am missing something, here. AVR processors have > > selectable > > > pull UP resisotrs on each and every digital I/O pin. Since a low > > > voltage is a logic 1, y
2005-08-31 by Thomas Keller
On Wed, 2005-08-31 at 10:36 -0700, Dave Hylands wrote: > > Perhaps I am missing something, here. AVR processors have > selectable > > pull UP resisotrs on each and every digital I/O pin. Since a low > > voltage is a logic 1, you don't need "pull down" resistors on AVR > > inputs.
2005-08-31 by Dave Hylands
> Perhaps I am missing something, here. AVR processors have selectable > pull UP resisotrs on each and every digital I/O pin. Since a low > voltage is a logic 1, you don't need "pull down" resistors on AVR > inputs. Ummm - a low voltage (0v) is a logic zero. A high voltage (5v) i
2005-08-31 by David Kelly
On Wed, Aug 31, 2005 at 12:22:16PM -0500, Thomas Keller wrote: > > Perhaps I am missing something, here. AVR processors have > selectable pull UP resisotrs on each and every digital I/O pin. > Since a low voltage is a logic 1, you don't need "pull down" > resistors on AVR inputs.
2005-08-31 by Thomas Keller
On Tue, 2005-08-30 at 19:48 +0000, jdelgadillo66 wrote: > Hi > Sorry but Im a microcontroller beginner and I have a lot of > questions, > Its necesary put in my circuits pull down resistors, I have a low > input pin (atmega8) and expect receive a 1 logic, Is it posible have > tro
2005-08-31 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, Thomas Keller wrote: > > Ummm - a low voltage (0v) is a logic zero. A high voltage (5v) is a > > logic one. > > Not according to AVR data sheets, it's not. Every AVR datasheet that I've seen describes a positive logic system for the I/O pins where
2005-08-31 by Stefan Wimmer
--- In AVR-Chat@yahoogroups.com, "Arif YILMAZ" wrote: > hello dear members, > i need a high capacity serial flash chip and i will use the following > from ST , > > http://www.st.com/stonline/products/literature/ds/10980/m25pe40.htm > > but it is 3.3 V > > do you know any other al
2005-08-31 by Arif YILMAZ
hello dear members, i need a high capacity serial flash chip and i will use the following from ST , http://www.st.com/stonline/products/literature/ds/10980/m25pe40.htm but it is 3.3 V do you know any other alternative for this serial flash memory about 512K flash with SPI interfa
2005-08-31 by John Samperi
At 05:48 AM 31/08/2005, you wrote: >Is it posible have trouble >(noise) if I havent a resistor pull down?, Is best practice put a >resistor pull down? Yes you are asking for trouble as you input will float. Less of a problem if you enable the internal pull up resistors but then y
2005-08-30 by jdelgadillo66
Hi Sorry but Im a microcontroller beginner and I have a lot of questions, Its necesary put in my circuits pull down resistors, I have a low input pin (atmega8) and expect receive a 1 logic, Is it posible have trouble (noise) if I havent a resistor pull down?, Is best practice put
2005-08-30 by mon juliat
Hello ok I use this method by problem in receive data from i2c (only 255) plz if possible send me bascom or fastavr source code thanks Juliat __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://ma
2005-08-30 by mon juliat
Hello I connect tc3400 to atmega32 according datasheet but when receive data from i2c only value is 255 if possible help me how receive data from i2c in bascom or fastavr Thanks Juliat __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail ha
2005-08-30 by Don Ingram
> Tom Keller > > (apologies tothose who already know all this stuff. Many here don't, > and it behooves all of us to educate each other) > Behoove away Maestro ;-)
2005-08-30 by Thomas Keller
On Mon, 2005-08-29 at 23:44 +0000, thormj wrote: > Are these "Space Vector" PWM signals similar to Don Lancaster's > "Magic > Sinewaves" (http://www.tinaja.com/magsn01.asp)? > -Thor Johnson No, not the same thing at all. Space vectors involve complex vector algebra, to computer 6
2005-08-29 by Thomas Keller
On Mon, 2005-08-29 at 15:29 -0600, erikc wrote: > Can you provide a link to this file? > http://www.avrfreaks.net/index.php?module=FreaksAcademy&func=viewItem&item_id=73&item_type=project > > his is the project file on avrFreaks.net
2005-08-29 by Thomas Keller
On Mon, 2005-08-29 at 17:13 +0000, Don Kinzer wrote: > --- In AVR-Chat@yahoogroups.com, "jdelgadillo66" > wrote: > > I search on he Internet about information to correct fuse settigs > > for brown out detection, I do not know what is the difference > > between 2.7, 4.0v or BODEN?
2005-08-29 by thormj
Are these "Space Vector" PWM signals similar to Don Lancaster's "Magic Sinewaves" (http://www.tinaja.com/magsn01.asp)? -Thor Johnson
2005-08-29 by Ralph Hilton
>At 08:15 PM 29/08/2005, you wrote: >>Hello >>plz help me to connect tc3400 microchip to atmega32 >>and bascom code (tc3400 is a adc 16 bit i2c bus) > A quick google gives code that might be adapted- http://www.phanderson.com/bx24/TC34BX24.html -- Ralph Hilton http://www.ralphhil
2005-08-29 by John Samperi
At 08:15 PM 29/08/2005, you wrote: >Hello >plz help me to connect tc3400 microchip to atmega32 >and bascom code (tc3400 is a adc 16 bit i2c bus) HOW??? Regards John Samperi ****************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham
2005-08-29 by erikc
Can you provide a link to this file? Thomas Keller wrote: > For those pof you who may not know, Spave Vector Pulse Width > Modulation is the premiere means of controlling the speed of AC > induction motorts (specifically, three phase motors). The primary > reason for this is that
2005-08-29 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, "jdelgadillo66" wrote: > I search on he Internet about information to correct fuse settigs > for brown out detection, I do not know what is the difference > between 2.7, 4.0v or BODEN? The datasheet for each microcontroller the settings. To summar
2005-08-29 by jdelgadillo66
Hello I search on he Internet about information to correct fuse settigs for brown out detection, I do not know what is the difference between 2.7, 4v or BODEN?, I already read AVR180 document but dont have information about AVRStudio brown-Out fuse settings. Thanks for help
2005-08-29 by m_juliat
Hello plz help me to connect tc3400 microchip to atmega32 and bascom code (tc3400 is a adc 16 bit i2c bus) thanks
2005-08-29 by Thomas Keller
On Sun, 2005-08-28 at 21:31 -0300, Mark Jordan wrote: > I'm interested. Did they use fixed point math? Assembly? > Mark Jordan mark: no, no fixed point math. It is written with the same basic apporach I had planned to use when I still thought I would be able to do it myself, whic
2005-08-29 by Mark Jordan
I'm interested. Did they use fixed point math? Assembly? Mark Jordan On 28 Aug 2005 at 19:19, Thomas Keller wrote: > All this having been said, my question: Has anyone out there ever > coded and used SCPWM, and could either provide sample code, or would be > willing to work wiht
2005-08-29 by Thomas Keller
For those pof you who may not know, Spave Vector Pulse Width Modulation is the premiere means of controlling the speed of AC induction motorts (specifically, three phase motors). The primary reason for this is that they switch the power waveforms 33% less often, thereby inurring
2005-08-28 by Dennis
OK ace. did that. What about the timers. Set the T1 overflow bit and it just kept cycling. Lance at his best. Are the timers special. D ----- Original Message ----- From: "Bruce Parham" To: Sent: Friday, August 26, 2005 7:10 PM Subject: Re: [AVR-Chat] Sudio simulator > Dennis wro
2005-08-27 by Laurinyecz Zoltán
Hi, You have an other chance to simulate external interrupts. If you want simulate a keypress for instance you have to create a file based on fallowing structure 000000100:00 000000110:10 000000300:00 000000310:10 The number on the left hand side of the colon is the number of pro
2005-08-27 by Bruce Parham
Dennis wrote: > Is there a way to "induce" and external interrupt in the Studio simulator? > Dennis > Sure. Just stop the sim and set the port pin. I.E. INT0 is connected to port X, bit Y. Expand the I/O port X window and click pin Y. (The actual port# and bit# depend on what pro
2005-08-26 by Dennis
Is there a way to "induce" and external interrupt in the Studio simulator? Dennis
2005-08-26 by John Preller
Thanks Brian, yes h/w is all O.K. I got the answer from the 'AVR-Club' and thought everyone may like to know as it may help others starting out like me. Someone else has pointed out that the AT90S2313 has 1 x 8 bit port (Port B) and 1 x 7 bit port (Port D). My program (yeah the w
2005-08-25 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, Dennis Clark wrote: > j m g wrote: > ... you have to go through your local Atmel distributor to get > samples. I requested a sample of the Mega644 from the local Avnet office. I was pleasantly suprised to receive 5 of them. I don't know if this is
2005-08-25 by Dennis Clark
j m g wrote: > Folks, > Does Atmel have a chip sampling program akin to Microchips? > Not directly, you have to go through your local Atmel distributor to get samples. DLC -- --------------------------------------- Dennis Clark TTT Enterprises ------------------------------------
2005-08-25 by Brian Fairchild
Have you checked your hardware? Brian -----Original Message----- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of John Preller Sent: 25 August 2005 15:06 To: AVR-Chat@yahoogroups.com Subject: [AVR-Chat] Help with C program on ATmel AT90S2313 (beginner
2005-08-25 by j m g
Folks, Does Atmel have a chip sampling program akin to Microchips? -- -jmg Chaos often breeds life, when order breeds habit. Henry Brooks Adams [1838-1918]
2005-08-25 by John Preller
All, This is my first attempt at using C and using the AVR platform. I used the Codevision AVR C compiler to automatically produce the code below (as I have got a long road ahead of me before I can produce my own code from scratch). The code is supposed to light an LED when the c
2005-08-25 by Darren Worley
Heh, the ultimate N#1 adjusting tool that blue wrench(slash axe), sure beats the N#2 adjusting tool, the 4Lb lump hammer. Although I find the 80/20 rule certainly applies to them both.. -----Original Message----- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On
2005-08-25 by Zack Widup
Yeah but don't get me angry when I'm working with my "blue wrench" (oxyacetylene cutting torch). (No, I don't use it to solder AVR's). :-) Zack On Wed, 24 Aug 2005, Gwen wrote: > --- In AVR-Chat@yahoogroups.com, Kathy Quinlan wrote: > > > > > Before anyone complains, I have PMS a
2005-08-24 by Gwen
--- In AVR-Chat@yahoogroups.com, Kathy Quinlan wrote: > > Before anyone complains, I have PMS and a hot soldering iron ;) > > Kat. Very funny joke about the engineer in hell :-) BTW I have a big soldering gun... a girl with a soldering gun is a dangerous thing indeed ;-) ..Gwen..