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2009-11-20 by Leon
--- In AVR-Chat@yahoogroups.com, Luke Whitmore wrote: > > This is pretty interesting. I suppose intellectual property law is > bound to rear it's ugly head when FPGAs are considered. I wonder if > there's an open-source movement producing designs in the commons for > FPGA devices
2009-11-20 by Luke Whitmore
This is pretty interesting. I suppose intellectual property law is bound to rear it's ugly head when FPGAs are considered. I wonder if there's an open-source movement producing designs in the commons for FPGA devices? AFAIK, Atmel have always been very good to the open-source com
2009-11-20 by leon Heller
----- Original Message ----- From: To: Sent: Friday, November 20, 2009 12:20 PM Subject: [AVR-Chat] AVR8 virtual processor on FPGA - Hack a Day > http://hackaday.com/2009/11/19/avr8-virtual-processor-on-fpga/ There are several AVR soft cores on the Opencores site. Here's one of t
2009-11-20 by enkitec@gmail.com
http://hackaday.com/2009/11/19/avr8-virtual-processor-on-fpga/
2009-11-20 by Tim Mitchell
----Original Message---- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of enkitec@gmail.com Sent: 20 November 2009 12:21 To: undisclosed-recipients Subject: [AVR-Chat] AVR8 virtual processor on FPGA - Hack a Day > http://hackaday.com/2009/11/19/avr8-v
2009-11-18 by Brian Dean
Hi Donald, On Wed, Nov 11, 2009 at 05:22:10AM -0000, Donald H wrote: > We are currently using an ATmeaga16 relay board from Sparkfun. > > http://www.sparkfun.com/commerce/product_info.php?products_id=766 > > I am now looking for a similar board with 8-14 relays and 8-14 opto inpu
2009-11-16 by Russell Shaw
Hi, I just got a usb AVRISP. What permission should i fix? : strace avrdude -p m8535 -c avrispmkII -P usb -v -U flash:w:proj.hex open("/dev/bus/usb/007/001", O_RDWR) = -1 EACCES (Permission denied) ... dev/bus/usb/007/001 exists, but i don't know what to do about the permissions
2009-11-16 by Russell Shaw
Hi, I just got a usb AVRISP. What permission should i fix? : avrdude -p m8535 -c avrispmkII -P usb -U flash:w:proj.hex avrdude: usb_open(): cannot read serial number "error sending control message: Operation not permitted" avrdude: usb_open(): cannot read product name "error send
2009-11-12 by Dave McLaughlin
Quote from your website!!! "He also writes his own documentation using correct grammar, spelling and punctuation." Are you sure you are an engineer!! J Dave. From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of ecros_technology Sent: 11 November 2009 19:2
2009-11-11 by ecros_technology
--- In AVR-Chat@yahoogroups.com, "Donald H" wrote: > I am now looking for a ... board > with 8-14 relays and 8-14 opto inputs. This would be a very straightforward custom design. I have just finished up two projects and would be able to take this on. http://www.ecrostech.com/Serv
2009-11-11 by Donald H
We are currently using an ATmeaga16 relay board from Sparkfun. http://www.sparkfun.com/commerce/product_info.php?products_id=766 I am now looking for a similar board with 8-14 relays and 8-14 opto inputs. Any suggestions ? Thanks don
2009-11-10 by Donald H
--- In AVR-Chat@yahoogroups.com, Guido Helmstetter wrote: It looks like Guido needs to be wacked. This is a one strike list, isn't it. don
2009-11-09 by syberraith
You can get AT32UC3A0128-ALUT at Mouser for under $10 --- In AVR-Chat@yahoogroups.com, "leon Heller" wrote: > > ----- Original Message ----- > From: "syberraith" > To: > Sent: Monday, November 09, 2009 8:58 PM > Subject: [AVR-Chat] Re: Looking for the Right AVR for my Project > >
2009-11-09 by leon Heller
----- Original Message ----- From: "syberraith" To: Sent: Monday, November 09, 2009 8:58 PM Subject: [AVR-Chat] Re: Looking for the Right AVR for my Project > > > >> Fred, >> >> Look at what others have done, this will give you insight as to the >> problems others have fought. >>
2009-11-09 by syberraith
> Fred, > > Look at what others have done, this will give you insight as to the problems others have fought. > > http://www.circuitcellar.com/microchip2007/winners/DE/MT1518.html Excellent reference, thank you. > What do you mean by "excessive elaborate" ? Support for Ethernet, P
2009-11-09 by Roland Jollivet
If you don't need a DsPic, look at these low end devices; 18F23K20 series 28pin, 64MHz , about $1.60 or 18F14K50 series, 20pin 48MHz similar price I'm not saying they're suited to the app, but they're budget micros' with oomph Roland 2009/11/9 syberraith > > > > > --- In AVR-Chat
2009-11-09 by leon Heller
----- Original Message ----- From: "Roland Jollivet" To: Sent: Monday, November 09, 2009 6:25 PM Subject: Re: [AVR-Chat] Re: Looking for the Right AVR for my Project > If you don't need a DsPic, look at these low end devices; > 18F23K20 series 28pin, 64MHz , about $1.60 or > 18F1
2009-11-09 by Dave Hylands
Looks like an ad for cialis On Mon, Nov 9, 2009 at 9:11 AM, Zack Widup wrote: > Can someone tell me what this is? A virus? >> http://sites.google.com/site/srhvxyfape/gf8mhfnizr -- Dave Hylands Shuswap, BC, Canada http://www.DaveHylands.com/
2009-11-09 by Dennis Clark
> you can use a 74hc4053 switch , to switch between two micro controller Not necessary. The I2C bus can be multi-master, see here: http://www.i2c-bus.org/MultiMaster/ If you can dedicate a data line between the two processors then this can be used to explicitly share the bus rath
2009-11-09 by leon Heller
----- Original Message ----- From: "syberraith" To: Sent: Monday, November 09, 2009 6:03 PM Subject: [AVR-Chat] Re: Looking for the Right AVR for my Project > > I see I need to clarify some things. > > This is a compression only effect, It has two states, on an off. The > lookup
2009-11-09 by Zack Widup
Can someone tell me what this is? A virus? Zack On Mon, Nov 9, 2009 at 11:01 AM, Guido Helmstetter wrote: > > > http://sites.google.com/site/srhvxyfape/gf8mhfnizr > > __________________________________________________________ > Get more done like never before with Yahoo!7 Mail. >
2009-11-09 by syberraith
--- In AVR-Chat@yahoogroups.com, BobGardner@... wrote: > > Guitar amps aint real hifi. The speakers dont get much above 3.5KHz, so I think a 20MHz AVR might do a respectable job of a 10bit 9KHz transfer table lookup function and echo chorus type effects. > > > -----Original Messa
2009-11-09 by Guido Helmstetter
http://sites.google.com/site/srhvxyfape/gf8mhfnizr __________________________________________________________________________________ Get more done like never before with Yahoo!7 Mail. Learn more: http://au.overview.mail.yahoo.com/
2009-11-09 by BobGardner@aol.com
Guitar amps aint real hifi. The speakers dont get much above 3.5KHz, so I think a 20MHz AVR might do a respectable job of a 10bit 9KHz transfer table lookup function and echo chorus type effects. -----Original Message----- From: syberraith To: AVR-Chat@yahoogroups.com Sent: Sat,
2009-11-09 by hamidreza maddah
you can use a 74hc4053 switch , to switch between two micro controller --- On Mon, 11/9/09, Emerson Santos wrote: From: Emerson Santos Subject: [AVR-Chat] Share a memory 24C256 To: AVR-Chat@yahoogroups.com Date: Monday, November 9, 2009, 3:26 AM Hi !!! Is possible share a i2c 242
2009-11-09 by Emerson Santos
Hi !!! Is possible share a i2c 24256 with 2 AVRS ??? I have a dedicade PIN in both where when 1 the AVR Master iss writing then other AVR wait and vice versa when the pin is 0 Anyone make this circuit ? Thanks Emerson [Non-text portions of this message have been removed]
2009-11-08 by dlc
Hi all, I have a bootloader that I've used successfully on the MEGA168 that I modified slightly to work on a MEGA8535. This wasn't all that difficult since the original bootloader had tons of ifdefs for just about every bootloader capable AVR there was to start with. My issue is
2009-11-08 by ecros_technology
--- In AVR-Chat@yahoogroups.com, "Donald H" wrote: > Will any AVR do 30MIPS ?? This depends very much on what you mean by a MIP. http://www.ecrostech.com/Resources/Dhrystone.htm Graham.
2009-11-08 by Donald H
--- In AVR-Chat@yahoogroups.com, "Donald H" wrote: > > > > --- In AVR-Chat@yahoogroups.com, "syberraith" wrote: > > > > I am designing a guitar pedal effect and need a MCU to sample the signal, perform a non-linear function, then generate a control current. > > > > The project re
2009-11-08 by Donald H
--- In AVR-Chat@yahoogroups.com, "syberraith" wrote: > > I am designing a guitar pedal effect and need a MCU to sample the signal, perform a non-linear function, then generate a control current. > > The project requires one ADC and one DAC these can be separate devices. > > The n
2009-11-08 by Jim Hatley
Hello Fred, You might consider a atxmega32a4 ... it's available now ... has fast ADC and fast DAC ... will run 32Mhz on internal oscillator ... low power ... larger flash memory sizes will be available ... lots of other features and larger xmega processors available. Jim ----- Or
2009-11-08 by David Kelly
On Nov 7, 2009, at 11:46 AM, syberraith wrote: > I am designing a guitar pedal effect and need a MCU to sample the > signal, perform a non-linear function, then generate a control > current. > > The project requires one ADC and one DAC these can be separate > devices. > > The non
2009-11-08 by leon Heller
----- Original Message ----- From: "syberraith" To: Sent: Saturday, November 07, 2009 5:46 PM Subject: [AVR-Chat] Looking for the Right AVR for my Project >I am designing a guitar pedal effect and need a MCU to sample the signal, >perform a non-linear function, then generate a co
2009-11-07 by Steve Hodge
Thanks, Don. Do you mean failure as in smoke? Steve From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of DonaldK Sent: Saturday, November 07, 2009 2:38 PM To: AVR-Chat@yahoogroups.com Subject: [AVR-Chat] Re: reset & debugwire circuit --- In AVR-Chat@yahoo
2009-11-07 by Steve Hodge
I am designing a circuit to use a Mega328P, which has debugWire. When not using debugWire I want to enable RESET and use it as an on-board reset with a momentary push button switch. The circuit thus simply consists of a connection from the RESET pin (pin #1, PC6) on the uC to thi
2009-11-07 by DonaldK
--- In AVR-Chat@yahoogroups.com, "Steve Hodge" wrote: >It would seem to me that all I that needs to happen is that >I don't use this on-board reset switch when using debugWire. That is correct. Applying a reset from other sources while using debugWire will probably cause failure.
2009-11-07 by syberraith
I am designing a guitar pedal effect and need a MCU to sample the signal, perform a non-linear function, then generate a control current. The project requires one ADC and one DAC these can be separate devices. The non-linear function can be performed without a FPU using CORDIC ro
2009-11-04 by david Vanhorn
Nope, just feed it good vcc, clock, and reset, and don't zap the pins. -- Sent from my Palm Prē Marc R.J. Brevoort wrote: On Wed, 4 Nov 2009, Tim Mitchell wrote: > I presume you're talking about bootloaders here > where the flash is being modified by the software. No, actually it
2009-11-04 by Marc R.J. Brevoort
On Wed, 4 Nov 2009, Tim Mitchell wrote: > I presume you're talking about bootloaders here > where the flash is being modified by the software. No, actually it's just an ATtiny which will be programmed, fuses set, inserted into a circuit and shipped. From that point on, nothing is
2009-11-04 by Tim Mitchell
----Original Message---- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of David VanHorn Sent: 04 November 2009 15:25 To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] prevent attiny2313 flash corruption > Sorry! Insuficient caffiene errror. > I was
2009-11-04 by David VanHorn
Sorry! Insuficient caffiene errror. I was thinking EE, but still most of the same issues apply. Writing while the power is failing is a bad idea, as is writing while the power is coming up. Sometimes, a power supply can have a glitch in its rise, such that the power goes invalid
2009-11-04 by David VanHorn
You need to make sure that the write will complete before power goes out of spec. You also need to make sure that the address you're writing to is correct, and that the data is correct. Generally, when not actively using the EE, I leave the EEAR pointing at 0x00, so that a wild w
2009-11-04 by Tim Mitchell
----Original Message---- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of David VanHorn Sent: 04 November 2009 13:59 To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] prevent attiny2313 flash corruption > You need to make sure that the write will c
2009-11-04 by leon Heller
----- Original Message ----- From: "Marc R.J. Brevoort" To: Sent: Tuesday, November 03, 2009 10:54 PM Subject: [AVR-Chat] prevent attiny2313 flash corruption > Hi, > > Recently I heard of the possibility that flash memory of > AVRs might be corrupted due to voltage spikes (origin
2009-11-04 by wagnerj@proaxis.com
> Hi, > > Recently I heard of the possibility that flash memory of > AVRs might be corrupted due to voltage spikes (originating > in static or in-circuit). Is there any merit to that? If > so, how do I protect my AVRs from getting corrupted? > > Thanks, > Marc > Hello, Marc - It
2009-11-03 by Marc R.J. Brevoort
Hi, Recently I heard of the possibility that flash memory of AVRs might be corrupted due to voltage spikes (originating in static or in-circuit). Is there any merit to that? If so, how do I protect my AVRs from getting corrupted? Thanks, Marc
2009-11-03 by Dave Hylands
Hi Erik, > If someone could share a nice quadrature decoding routine? I have some over here (in C): -- Dave Hylands Shuswap, BC, Canada http://www.DaveHylands.com/
2009-11-03 by Peter Harrison
On 3 Nov 2009, at 14:24, erikc wrote: > I'm working one one right now. I just got started playing with AVRs > (professionally I work with Freescale parts) > > My personal goal is to create digital readouts for the little lathe > and mill I have out in the garage. I intend this to
2009-11-03 by Roland Jollivet
The best?? quadrature decoding I found is shown below, for a mouse. I don't know who the author was, since this is the only text I copied. It has to be translated into code though. _____________ First verify that you can read the two phases for each direction as digital inputs, d
2009-11-03 by erikc
I'm working one one right now. I just got started playing with AVRs (professionally I work with Freescale parts) My personal goal is to create digital readouts for the little lathe and mill I have out in the garage. I intend this to be a multiprocessor device, with a separte AT90