Yahoo Groups archive
Messages
Page 270 of 307 · 15341 messages matched
2004-09-07 by Kathy Andrea Quinlan
--- In AVR-Chat@yahoogroups.com, Dave VanHorn wrote: > At 11:27 PM 9/6/2004, stevech wrote: > I was just surprised that I hadn't made the connection before. Dave, you just needed to realise that you had teenagers first ;) Kat.
2004-09-07 by Reza
Hi; I am no hardware designer, but I tried long before using Xilinx XC95144XL CPLD's. the only thing you need to start using it, is a xilinx cable programmer, which is something like AVR ISP cable, the ISE WebPack synthesys tool (which can be freely downloaded from Xilinx web sit
2004-09-07 by Ken Holt
Digilent is the maker of the Spartan-3 development board that I use. tfcsd wrote: > try > http://www.digilentinc.com/ > > Kathy Andrea Quinlan wrote: > >>--- In AVR-Chat@yahoogroups.com, "Kathy Andrea Quinlan" >> wrote: >> >> >>>Hi all, >>> >>>I want to play with FPGA's, so I am
2004-09-06 by Mike Murphree
On Sep 6, 2004, at 11:11 AM, Kathy Andrea Quinlan wrote: > --- In AVR-Chat@yahoogroups.com, "Kathy Andrea Quinlan" > wrote: >> Hi all, >> >> I want to play with FPGA's, so I am looking for a dev kit. I do not >> want to spend $1,000's but want something that will let me learn. >>
2004-09-06 by Dave VanHorn
I just had one of those moments... :) I came to the realization that the cooperative multitasking model that I've used as the core of my applications for years, is nothing more than how a teenager behaves. When any chore is due: (system call to transmit a byte) First, find any po
2004-09-06 by tfcsd
try http://www.digilentinc.com/ Kathy Andrea Quinlan wrote: --- In AVR-Chat@yahoogroups.com , "Kathy Andrea Quinlan" wrote: Hi all, I want to play with FPGA's, so I am looking for a dev kit. I do not want to spend $1,000's but want something that will let me learn. any recomendat
2004-09-06 by Ken Holt
RE FPGA development - we just bought the Spartan-3 Starter Kit (Xilinx) for about $100 and it is a great part, and cheap, and you can get going on it fairly quickly. The development board comes with a BGA 256 part, but we'll be using a PQ208. PCI and many other cores are free, an
2004-09-06 by Mike Murphree
On Sep 6, 2004, at 9:38 AM, wrote: > I don't know much about them, but we use Xilinx dev boards to teach > VHDL etc at work (a uni, but I do the analogue labs.) I had a quick > look at their website and found the Spartan II PCI development system. > It's 250USD on their site. Sof
2004-09-06 by Cosmin Buhu
Try here http://www.fpga4fun.com/ . Site not working (at least from here), I remember they have a board with PCI too. See the Google cache: http://216.239.59.104/search?q=cache:fPdIzq_htsoJ:www.fpga4fun.com/+&hl=en Cosmin ----- Original Message ----- From: "Kathy Andrea Quinlan"
2004-09-06 by r_reeves@blueyonder.co.uk
I don't know much about them, but we use Xilinx dev boards to teach VHDL etc at work (a uni, but I do the analogue labs.) I had a quick look at their website and found the Spartan II PCI development system. It's 250USD on their site. Software I don't know about, but I *think* the
2004-09-06 by Brian Fairchild
try http://www.burched.biz/ , based in .au -----Original Message----- From: Kathy Andrea Quinlan [mailto:kat-yahoo@kaqelectronics.dyndns.org] Sent: 06 September 2004 15:17 To: AVR-Chat@yahoogroups.com Subject: [AVR-Chat] FPGA's Hi all, I want to play with FPGA's, so I am looking
2004-09-06 by Steven Chang-Lin Yu
unh, i think FPGA is never cheaper then 1000, are you a uni student? perhaps you can borrow one of the development kit from your uni to play with it?
2004-09-06 by Kathy Andrea Quinlan
--- In AVR-Chat@yahoogroups.com, "Kathy Andrea Quinlan" wrote: > Hi all, > > I want to play with FPGA's, so I am looking for a dev kit. I do not > want to spend $1,000's but want something that will let me learn. > > any recomendations ? OK after looking at the sugestions and doi
2004-09-06 by erikc
----- Original Message ----- From: "Kathy Andrea Quinlan" To: Sent: Monday, September 06, 2004 15:17 Subject: [AVR-Chat] FPGA's > Hi all, > > I want to play with FPGA's, so I am looking for a dev kit. I do not > want to spend $1,000's but want something that will let me learn. >
2004-09-06 by Kathy Andrea Quinlan
Hi all, I want to play with FPGA's, so I am looking for a dev kit. I do not want to spend $1,000's but want something that will let me learn. any recomendations ? Things I would like: Ability to do designs with PCI. Ability to impliment IP cores. Any sugestions ? Pref australian
2004-09-05 by kk5vh
--- In AVR-Chat@yahoogroups.com, Alex Gibson wrote: > Does bascom support the atmega169 yet ? > > Alex Bascom supports the atmega169 in beta version 1.11.7.5 . But I get a butterfly to hang on the hardware SPI initialize command. I keep wondering if I am doing something wrong and
2004-09-05 by Alex Gibson
kk5vh wrote: > Has anybody gotten the dataflash to work using Bascom on the > butterfly? > > How about using Assy or C? > > I would think it was simple but that has not yet been proven. > > Thanks > John KK5VH Does bascom support the atmega169 yet ? Alex
2004-09-03 by James Wagner
Quite a few use C or assy. Have not heard of any Bascom users. Jim, KA7EHK On Fri, 03 Sep 2004 23:24:04 -0000 "kk5vh" wrote: > > > > > Has anybody gotten the dataflash to work using Bascom on > the > butterfly? > > How about using Assy or C? > > I would think it was simple but th
2004-09-03 by kk5vh
Has anybody gotten the dataflash to work using Bascom on the butterfly? How about using Assy or C? I would think it was simple but that has not yet been proven. Thanks John KK5VH
2004-09-02 by John Samperi
At 11:52 PM 9/1/04 -0500, you wrote: >That's the fun part. >Atmel gives us no guidance here. >What worries me, is that you might get one result on one chip, and another on another chip, with a different date code. Or, it might be consistent.. > How's the raging headache going Dav
2004-09-02 by James Wagner
My hunch, and its JUST that, is that a prescale of 2 with a 16MHz processor clock, would be a major problem. Again, a hunch, I would not expect much better than a few bits "accuracy" if that. The rule I have used, without any substantiation or validation, is that every doubling o
2004-09-02 by Graham Davies
--- In AVR-Chat@yahoogroups.com, Craig Limber wrote: > ... how much accuracy do I lose? > ... with an 8 MHz clock and a > prescale of 2? I ... am only > interested in 8 bit readings but > want a high sample rate. I don't have the ATmega128 data sheet with me, but this is fairly w
2004-09-02 by Brian Dean
On Wed, Sep 01, 2004 at 05:14:11AM -0000, Yang Wang wrote: > Thanks for the reply. Do we have to pull up the PEN pin? I didn't > connect it to anything, and it was high as I measured when the > program was running, so it looks like it has an internal pull-up. But > I think this i
2004-09-02 by Dave VanHorn
At 03:23 PM 9/1/2004, Craig Limber wrote: >> If its too fast, you will loose accuracy. > >Thanks for the quick responses! I guess the next question is how >much accuracy do I lose? For example, what kind of variation could >I expect with an 8 MHz clock and a prescale of 2? I have
2004-09-01 by Craig Limber
> If its too fast, you will loose accuracy. Thanks for the quick responses! I guess the next question is how much accuracy do I lose? For example, what kind of variation could I expect with an 8 MHz clock and a prescale of 2? I have the results left justified and am only interest
2004-09-01 by Dave VanHorn
At 01:21 PM 9/1/2004, Erik Loose wrote: >Not to be too picky, but since my last name is Loose, I like to see the word >used correctly. You "lose" accuracy - "loose" is an adjective. ;) Sorry, I'm fighting a screaming headache today.
2004-09-01 by James Wagner
The ADC clock needs to be in a fairly narrow range if the accuracy specs are to be met. If its too slow, the sample-hold cap will loose some of its charge and the converter won't work right. If its too fast, you will loose accuracy. But, since the processor clock can vary over a
2004-09-01 by Erik Loose
Not to be too picky, but since my last name is Loose, I like to see the word used correctly. You "lose" accuracy - "loose" is an adjective. ;) Erik -----Original Message----- From: Dave VanHorn [mailto:dvanhorn@dvanhorn.org] Sent: Wednesday, September 01, 2004 11:04 To: AVR-Chat@
2004-09-01 by Dave VanHorn
At 11:56 AM 9/1/2004, Craig Limber wrote: >Hi there; > >I was just browsing the docs on the AVR ADC. I was wondering if anyone >could tell me why I would want to use a ADC prescalar other than 2 >(the mimimum)? Does it affect the accuracy or noise? Thanks. The adc clock has to be
2004-09-01 by Craig Limber
Hi there; I was just browsing the docs on the AVR ADC. I was wondering if anyone could tell me why I would want to use a ADC prescalar other than 2 (the mimimum)? Does it affect the accuracy or noise? Thanks. Craig
2004-09-01 by Yang Wang
Thanks for the reply. Do we have to pull up the PEN pin? I didn't connect it to anything, and it was high as I measured when the program was running, so it looks like it has an internal pull-up. But I think this is probably going to be worth of a try. This is what I found on the
2004-08-30 by Mark Jordan
I'm dealing with two-complement math using 16bit registers. Please take a look at my routines and tell me if I'm doing anything wrong or if there is a better way of doing it: --------- Adding two signed numbers is: add numl, fatl adc numh, fath --------- For subtracting two signe
2004-08-30 by James Wagner
There are several Atmel app notes on multi-byte math. I think there are examples in both assy and C. Jim On Mon, 30 Aug 2004 12:31:12 -0300 "Mark Jordan" wrote: > > > > > > I'm dealing with > two-complement math using 16bit registers. >
2004-08-28 by Jack Valmadre
Replaced the chip with a new one and everything worked fine. Sorry about that. Jack. ----- Original Message ----- From: Dave VanHorn To: AVR-Chat@yahoogroups.com ; AVR-Chat@yahoogroups.com Sent: Saturday, August 28, 2004 2:24 PM Subject: Re: [AVR-Chat] PORTA input problems At 06:
2004-08-28 by Lee
I'm using Studio4.9, but that appears to be the answer. Thanks for the help. Lee --- In AVR-Chat@yahoogroups.com, "Astria Nur Irfansyah" wrote: > Maybe you havent set the assembler options. You are using > AVR Studio 3 right? Just set the options from the > [Project] [Project Set
2004-08-28 by Astria Nur Irfansyah
Maybe you havent set the assembler options. You are using AVR Studio 3 right? Just set the options from the [Project] [Project Settings...] menu, and change the code generation output file format from "Object format for AVR Studio" to "Intel HEX". A HEX file will be created upon
2004-08-28 by Ivan Vernot
The pull-up should be fine. Personally I would still use a 'reset chip' (like the MC34064) to give a bit more margin for noise etc, but the 1K should still work. Something to check though is that Pin 1 (PEN) should be pulled up also. HTH Ivan Vernot realtimedesigns ----- Original
2004-08-28 by Dave VanHorn
At 06:41 PM 8/27/2004, Jack Valmadre wrote: >I checked the voltage on the pins and they were all 4.87-4.98V, the same as >the outputs. >Activating pull-ups didn't make any difference. >This code: > sensors = PINA; > sensors &= 0xF0; >didn't compile any differently to: > sensors =
2004-08-28 by Brian Dean
On Fri, Aug 27, 2004 at 06:24:37PM -0000, Yang Wang wrote: > Can we connect the reset line and +5V line with a 1k pull-up > resistor, to keep the reset line high? Yes, that should be fine. I normally use a 10K pull-up, but 1K should work. You don't usually want to to tie the line
2004-08-28 by John Samperi
At 10:04 PM 27/08/04 -0000, you wrote: > >Hi all. I've finally got AVRStudio working Glad it works now. What was the problem? >What file type is usually generated by the AVR >assembler in AVRStudio that can be used by PonyProg? I guess it would be the .hex file which is generated
2004-08-27 by Jack Valmadre
I checked the voltage on the pins and they were all 4.87-4.98V, the same as the outputs. Activating pull-ups didn't make any difference. This code: sensors = PINA; sensors &= 0xF0; didn't compile any differently to: sensors = PINA & 0xF0; Jack. ----- Original Message ----- From:
2004-08-27 by Larry Barello
I used the basic ideas for a large robot built for a high school competition, last year. WOrks great. I wrote my functions all in C. I only used his flow chart and math. -----Original Message----- From: Dave Mucha [mailto:dave_mucha@yahoo.com] Sent: Friday, August 27, 2004 10:09
2004-08-27 by Dave VanHorn
At 04:46 PM 8/27/2004, Jack Valmadre wrote: >I forgot to mention that I tested pins 0-3 on PORT A as outputs and they >worked fine. >I have also tried connecting an LED to the output of the comparator where it >would usually be connected to the Atmel and it went on/off as expecte
2004-08-27 by Jack Valmadre
I forgot to mention that I tested pins 0-3 on PORT A as outputs and they worked fine. I have also tried connecting an LED to the output of the comparator where it would usually be connected to the Atmel and it went on/off as expected. Jack. ----- Original Message ----- From: Jack
2004-08-27 by Jack Valmadre
Hi, I have the outputs of a quad comparator (LM339) connected to PORT A of an AT90S8535 on pins 0-3. I can read pins 0 and 1 fine, but 2 and 3 are constantly read as low. I tried moving this to pins 4-7 and the opposite happened, so I could read from pins 6 and 7 but not 4 and 5.
2004-08-27 by Lee
Hi all. I've finally got AVRStudio working and I'm planning on using PonyProg to download the code into an ATMEga32 using a parallel interface. i didn't see any files in my target directory with the extensions that are listed in PonyProg. What file type is usually generated by th
2004-08-27 by amr elnady
please unsubscribe me from this group --- Jose wrote: > If I use the internal 2.56V reference, how the AREF > pin should be > connected? Can connect a capacitor between AREF and > GND? > Thanks in advance. > > Jose > > > __________________________________ Do you Yahoo!? New and I
2004-08-27 by Lasse Madsen
Hi Yang .. If you look at the ATm128 datasheet over the Reset line you will find no reason why the mentioned thing should occur… A badly designed power supply comes to mind … try adding a large capacitor to your +5V and at least 100nF to Reset .. Regards Lasse Madsen -----Origina
2004-08-27 by Yang Wang
Hi all, Can we connect the reset line and +5V line with a 1k pull-up resistor, to keep the reset line high? Out of the 8 circuit boards with the same schematics I am building, 6 of them work in this way, while the other two do not. For these two problematic ones, the reset line i
2004-08-27 by Dave Mucha
Hi Guys, very interesting site. Makes me think motor control is super simple as the program is so short. Has anyone actually made something from those schematics and software ? Dave --- In AVR-Chat@yahoogroups.com, "Charlie Heath" wrote: > Try this link: http://elm-chan.org/works