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2007-11-27 by Jim Wagner
The internal oscillator is a simple RC oscillator. It is not a very good oscillator. The frequency changes with the power supply voltage and with temperature but it does stay within the limits given in the data sheet. The data sheet tells how to change OSCAL. Normally, changes wi
2007-11-27 by Jim Wagner
This register is factory calibrated. From the factory, the accuracy is according to the value in the specification sheet. You only need to do something with it if factory accuracy is not good enough. However, there is quite a bit of variation with temperature and power supply vol
2007-11-27 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "Jim Wagner" > This is incorrect. You can read an infinite > number of times. Only writes are limited. This is also not really correct. You can write all you want to, although only writing bits from one to zero will succeed. The write/erase cycle
2007-11-26 by Jim Wagner
This is incorrect. You can read an infinite number of times. Only writes are limited. Jim On Mon, 26 Nov 2007 05:58:37 -0800 (PST) alex levenie wrote: > > > top_speed_2006 wrote: > Dear all; > Anyone can explain to me :::: > The ATmega8535 > -8K Bytes of In-System Self-Programmab
2007-11-26 by mido glgl
thanks for all . and i will think about u say ----- Original Message ---- From: David Kelly To: AVR-Chat@yahoogroups.com Sent: Monday, November 26, 2007 4:52:24 PM Subject: Re: [AVR-Chat] Begginer On Mon, Nov 26, 2007 at 05:07:50AM -0000, top_speed_2006 wrote: > Dear all; > Anyon
2007-11-26 by David Kelly
On Mon, Nov 26, 2007 at 05:07:50AM -0000, top_speed_2006 wrote: > Dear all; > Anyone can explain to me :::: > The ATmega8535 > -8K Bytes of In-System Self-Programmable Flash > Endurance: 10,000 Write/Erase Cycles > ? Optional Boot Code Section with Independent Lock Bits > In-Syst
2007-11-26 by alex levenie
top_speed_2006 wrote: Dear all; Anyone can explain to me :::: The ATmega8535 -8K Bytes of In-System Self-Programmable Flash Endurance: 10,000 Write/Erase Cycles Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-W
2007-11-26 by top_speed_2006
Dear all; Anyone can explain to me :::: The ATmega8535 -8K Bytes of In-System Self-Programmable Flash Endurance: 10,000 Write/Erase Cycles Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation
2007-11-25 by Jim Wagner
What do you need explained? There is a data sheet on the Atmel web site that explains "everything". Jim On Mon, 26 Nov 2007 05:07:50 -0000 "top_speed_2006" wrote: > Dear all; > Anyone can explain to me :::: > The ATmega8535 > -8K Bytes of In-System Self-Programmable Flash > Endur
2007-11-24 by Michael Haisley
Then again, I'd much rather them kill non essential AC/water heaters vs an entire power circuit /neighborhood/etc in a rolling blackout situation. Much less collateral damage when you take out the AC for two neighborhoods, than when you shut off granny's oxygen generator. On Nov
2007-11-24 by Bob Gardner
Thanks for the idea - it's not be a stupid idea at all I'll make a board in the next couple of days and try it out. I'll let you know how it works. Thanks again, Bob --- In AVR-Chat@yahoogroups.com, Reza wrote: > > > --- Bob Gardner wrote: > > > I'm looking for a reasonably inexp
2007-11-24 by Philippe Habib
In this case, the utility pays the consumer if they volunteer to participate. On Nov 23, 2007, at 7:48 PM, David Kelly wrote: > > On Nov 23, 2007, at 1:56 PM, David VanHorn wrote: > >>> There is also a program in >>> place that installs a thermostat that can be remotely set by th
2007-11-24 by Reza
--- Bob Gardner wrote: > I'm looking for a reasonably inexpensive way to > program a bootloader > into some ATmega324p chips in a TQFP package before > I put them on > boards since I would prefer not to put a programming > adapter on the > boards. All the sockets I've seen seem t
2007-11-24 by David Kelly
On Nov 23, 2007, at 1:56 PM, David VanHorn wrote: >> There is also a program in >> place that installs a thermostat that can be remotely set by the >> utility so that on hot days they'll turn off your AC for a short time >> to save power. I think we'll see a whole lot of this stu
2007-11-23 by Philippe Habib
$60 a year is a lot better than PG&E is offering. They will send someone to install the special thermostat and pay you a one time $25 for signing up. -----Original Message----- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of Tom Becker Sent: Friday,
2007-11-23 by David VanHorn
On Nov 23, 2007 3:07 PM, Roy E. Burrage wrote: > I wonder if Malibu, Santa Barbara, and Sacramento will secede. Last time I saw it, they were drawing the line at I-80 with a job upward at the end so that Socal could keep Marin.
2007-11-23 by Roy E. Burrage
I wonder if Malibu, Santa Barbara, and Sacramento will secede. REB David VanHorn wrote: >>There is also a program in >>place that installs a thermostat that can be remotely set by the >>utility so that on hot days they'll turn off your AC for a short time >>to save power. I think
2007-11-23 by David VanHorn
> There is also a program in > place that installs a thermostat that can be remotely set by the > utility so that on hot days they'll turn off your AC for a short time > to save power. I think we'll see a whole lot of this stuff in the > next few years. Another reason not to live
2007-11-23 by Tom Becker
> ... on hot days they'll turn off your AC for a short time... I'm surprised to hear that California is only now getting around to load shedding. We have had a load shedding program in southwest Florida for >15 years. In my home, we have two ~160MHz receivers which can cycle the
2007-11-23 by Philippe Habib
California has mandated that all power meters be switched to remote reading. Right now there are 2 pilot projects and the full rollout should happen within a couple of years. There is also a program in place that installs a thermostat that can be remotely set by the utility so th
2007-11-23 by David VanHorn
On Nov 23, 2007 12:27 PM, Bob Gardner wrote: > I'm looking for a reasonably inexpensive way to program a bootloader > into some ATmega324p chips in a TQFP package before I put them on > boards since I would prefer not to put a programming adapter on the > boards. All the sockets
2007-11-23 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, "Bob Gardner" wrote: > All the sockets I've seen seem to be in the $100+ range. I've purchased several TQFP ZIF sockets from http://test-socket.com, mostly the Yamaichi brand. They run about $70 and seem to be good quality. Don Kinzer ZBasic Micro
2007-11-23 by Bob Gardner
I'm looking for a reasonably inexpensive way to program a bootloader into some ATmega324p chips in a TQFP package before I put them on boards since I would prefer not to put a programming adapter on the boards. All the sockets I've seen seem to be in the $100+ range. Anything out
2007-11-23 by John Samperi
At 06:21 AM 22/11/2007, you wrote: >operand 2 out of range and gives me the address of the counter registers > >in r6,TCNT1L >in r7,TCNT1H Depending on which processor you are using, TCNT1 could be memory mapped and therefore you need to use LDS and STS instead of IN/OUT. You can
2007-11-23 by John Samperi
At 04:45 PM 16/11/2007, you wrote: >A good place to get started is one of the boards packaged with a >compiler and experiment kit. If you are into C then you can't go wrong with a Butterfly and a C book from: http://www.smileymicros.com/ Regards John Samperi *********************
2007-11-23 by David Kelly
On Nov 21, 2007, at 1:21 PM, twrokspit wrote: > I have an error reading the TCNT1L, TCNT1H from the 16-bit counter, im > using the ICP1 and when this causes an interruption the High and Low > bits of the counter must be read. > > When i try to assemble the project i got i message
2007-11-23 by David Kelly
On Nov 22, 2007, at 11:36 AM, Clark wrote: > Hi > > I'm new to the group & to micro controllers. > > I work for an electric utility (in the elect meter shop). > > Is any one on this list aware of projects related to AVR's & electric > utilities ? Couple of years ago I put one und
2007-11-22 by Jim Wagner
On Fri, 16 Nov 2007 05:54:37 -0000 "Clark" wrote: > Hi all > > My nane is Clark. I'm a beginner as to microcontrollers. > > I work for a small electric utility in Southern Calif > (municipal). I > work in the substations & with energy meters. > > Just wanting to see what others a
2007-11-22 by Clark
Hi I'm new to the group & to micro controllers. I work for an electric utility (in the elect meter shop). Is any one on this list aware of projects related to AVR's & electric utilities ? Just want to see whats out there :-) Clark
2007-11-21 by twrokspit
Hi. Everyone I have an error reading the TCNT1L, TCNT1H from the 16-bit counter, im using the ICP1 and when this causes an interruption the High and Low bits of the counter must be read. When i try to assemble the project i got i message which says operand 2 out of range and give
2007-11-19 by Zack Widup
From the looks of it, you've gone way beyond simply trying to get the LCD to display something. How much microcontroller experience have you had? I know there are people here who believe writing in higher-level languages than assembler is not the way to go, but at least to start
2007-11-19 by Ben Zijlstra
Omid Perhaps you can give us the email address of your teacher and we can mail direct to him. >Dear all >Thanks for your reply to my pervious E-mail about LCD ( character ) . unfortunately my problem still exists. >My controller LCD is on my LCD chip and is not a separate chip. I
2007-11-19 by John Samperi
At 04:31 PM 19/11/2007, you wrote: > My LCD is 20*4 please give me code file too show this words: > > Distarnse: > Position: > Mode: > Time: > > Please help me as soon as possible. So what will you be doing if we do the work for you? Regards John Samperi *************************
2007-11-19 by Omid Station
Dear all Thanks for your reply to my pervious E-mail about LCD ( character ) . unfortunately my problem still exists. My controller LCD is on my LCD chip and is not a separate chip. I think it woks properly. It is possible header file lcd.h does not work properly. Can you send me
2007-11-18 by John Samperi
At 12:44 PM 18/11/2007, you wrote: >If I am reading the documentation correctly, applying 12v with a pull >up resistor (> 4.7k) is required. Not really, only a few small chips will need the 12V, but you let the programmer do that. The vast majority of AVR do no need that. >I am l
2007-11-18 by warp_kez
--- In AVR-Chat@yahoogroups.com, John Samperi wrote: > > Almost correct except for the reset pin. Have a look at the STK500 > docs in Studio, it shows how to wire up the connector. If I am reading the documentation correctly, applying 12v with a pull up resistor (> 4.7k) is requi
2007-11-17 by dpalu2
--- In AVR-Chat@yahoogroups.com, John Samperi wrote: > > At 01:34 AM 15/11/2007, you wrote: > > >This would be the easiest solution. I checked out avrfreaks.net and > >couldnt find anything. Is it just a matter of finding the *.c or > >*.asm and adding the device code? > > This t
2007-11-16 by eko_saja
hello guy,,, i`ve problem with my usbasp. it work well on my PC but don`t work on my Aspire 4710. do you have a solution?? thanks for your answer.
2007-11-16 by Ralph Hilton
On Tue, 13 Nov 2007 23:27:50 -0000 you ("top_speed_2006" ) wrote: >I started to study AVR >Specially ATmega8535 >but i have many troubles >Anyone can helo me?????? Quite possibly. What specific problems are you having? -- Ralph Hilton http://www.ralphhilton.org C-Meter: http://ww
2007-11-16 by Philippe Habib
Its not quite that simple. A good book that takes you through all of this kind of stuff is Designing Embedded Hardware by Catsoulis. He talks about the main pins on a uC and has several sample hardware designs that he explains along with the software to drive them. A good place t
2007-11-16 by Clark
Hi all My nane is Clark. I'm a beginner as to microcontrollers. I work for a small electric utility in Southern Calif (municipal). I work in the substations & with energy meters. Just wanting to see what others are doing along these lines :-) Thanks
2007-11-16 by John Samperi
At 02:32 PM 15/11/2007, you wrote: >The side that confuses me the most, is the wiring of the pin to the uC >- is it as straight forward as MOSI to MOSI, MISO to MISO, SKT to SKT, >and RST to RST, or is there more to it? Almost correct except for the reset pin. Have a look at the
2007-11-16 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, "warp_kez" wrote: > - is it as straight forward as MOSI to MOSI, MISO to MISO, > SKT to SKT, and RST to RST, or is there more to it? In a word, yes. This is an SPI interface that has a master (the programmer) and a slave (the device being programm
2007-11-15 by Jim Wagner
It depends on the processor, even within the AVR family. Some share programming with the SPI port. Some have a separate set of pins for programming. You have to look at the data sheet. Normally, it is under "Memory Programming". A few of the really low pin count devices ONLY have
2007-11-15 by warp_kez
I apologise upfront if this has been asked before - again and again etc. I am a little confused about programming the target uC, as I have only been working in simulators and the likes and in general just playing around. The side that confuses me the most, is the wiring of the pi
2007-11-15 by John Samperi
At 01:34 AM 15/11/2007, you wrote: >This would be the easiest solution. I checked out avrfreaks.net and >couldnt find anything. Is it just a matter of finding the *.c or >*.asm and adding the device code? This thread may help. http://www.avrfreaks.net/index.php?name=PNphpBB2&file
2007-11-14 by Richard Reeves
> version of my Proteus is 6.9 (full). Is your full version of Proteus legal or cracked? Richard --- "Sve je bilo tako tiho a nemirno..." http://www.musicvangogh.com/
2007-11-14 by David VanHorn
> Of course, it's the only industry I can think of that charges extra if you want them to build it right! Can you imagine ordering a pepperoni pizza; finding onions instead of pepperoni; and the waiter says "you didn't pay for 'ingredient inspection'"! DONT give them any ideas! F
2007-11-14 by Richard Cooke
Hi Tim, I doubled checked the files and the short is there. Since this was a prototype I didn't feel that I needed to spend the extra money on having the board house do electrical testing. Most of my designs aren't "bleeding edge" so they have pretty wide gaps between components
2007-11-14 by Tim Gilbert
Richard, Are you sure the short is in the design files? I've had numerous boards (usually production boards), that come back with unexpected shorts between traces. These result from "under etching" at the board house, which is why they offer electrical testing. Of course, it's th