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2012-09-24 by Jim Wagner
There will be "problems" as new devices are introduced and definition files for 4.xx are not updated. Jim Wagner Oregon Research Electronics ----- Original Message ----- From: "Trevor Bryant" To: AVR-Chat@yahoogroups.com Sent: Monday, September 24, 2012 3:14:25 PM Subject: Re: [A
2012-09-24 by Trevor Bryant
I use AVR Studio 4.19 on two of my computers with no problems. Both are Intel quad-core, one is running Windows 7 Pro 64bit (4GB DDR3), the other Windows 7 Home Premium 64bit (8GB DDR3). I have no problems with either setup - in the code or in the programming of my micros. That's
2012-09-24 by John Samperi
At 07:42 AM 25/09/2012, you wrote: >AS 4.18 was a nice sharp knife but AS6 is like cutting butter with a >baseball bat. I still haven't even downloaded AS5/6, can't afford to be messed around with and not do any work. However with the upcoming demise of win XP and the possible ne
2012-09-24 by David Kelly
On Sep 24, 2012, at 4:25 PM, John Samperi wrote: > At 01:09 AM 25/09/2012, you wrote: >> What version of Studio do you feel is most reliable? > > Is there a POINT to this? Does it matter what we think or what > Atmel thinks is the future direction? I think its a useful way to sti
2012-09-24 by John Samperi
At 01:09 AM 25/09/2012, you wrote: >What version of Studio do you feel is most reliable? Is there a POINT to this? Does it matter what we think or what Atmel thinks is the future direction? I still use 4.18, AS5 should not even be considered as it was simply a bug ridden early re
2012-09-24 by AVR-Chat@yahoogroups.com
Enter your vote today! A new poll has been created for the AVR-Chat group: What version of Studio do you feel is most reliable? o 4.19 or earlier o 5.X o 6 To vote, please visit the following web page: http://groups.yahoo.com/group/AVR-Chat/surveys?id=13153903 Note: Please do not
2012-09-17 by Leon Heller
On 17/09/2012 03:01, Gerry wrote: > Subject: Xilinx CPLD & FPGA vintage software Request > > > Hi Folks, > > Fellow Electronics hobbyist here. > > I know this might be a bit off track from AVR components,but figured I'd > give you all a try regardless. > > I'm more of an Altera h
2012-09-17 by Gerry
Subject: Xilinx CPLD & FPGA vintage software Request Hi Folks, Fellow Electronics hobbyist here. I know this might be a bit off track from AVR components,but figured I'd give you all a try regardless. I'm more of an Altera hardware man myself and have gathered quite the archive o
2012-09-01 by John Samperi
At 12:24 PM 1/09/2012, you wrote: >My good old Tektronix 2232 proved your theory correct! Great. :-) Regards John Samperi ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA Tel. (02) 9674-6495 Web
2012-09-01 by englsprogeny1
My good old Tektronix 2232 proved your theory correct! And to think that was going to get rid of it... I guess that I need to be careful with PC based test equipment. Thanks again, John! --- In AVR-Chat@yahoogroups.com, "englsprogeny1" wrote: > > > John, you said "Not trying to t
2012-08-31 by englsprogeny1
John, you said "Not trying to teach you anything of course" I've been watching you in this group for years. You could teach me a lot! AND I would willingly learn! :) Anyways, I must have something wrong with my test equipment. I will try my (non-PC-based scope) tomorrow. Many tha
2012-08-31 by John Samperi
At 12:00 AM 1/09/2012, you wrote: >When I look at the signal, I get between 0.9 and 2.1ms (about)for a >call for 5ms. > >When I try 10ms delay, I get between 2 and 4ms delay. hmm something is fishy, maybe your test equipment? :-) As you have tried different boards and they were w
2012-08-31 by englsprogeny1
Steven, The previous Fuse values were from my ATMega8 Fuse settings for my ATMega16 board are: Low Byte: 0xFF High byte: 0x09 --- In AVR-Chat@yahoogroups.com, STEVEN HOLDER wrote: > > What are your fuse settings ? > > Regards > > > > ________________________________ > From: engls
2012-08-31 by STEVEN HOLDER
What are your fuse settings ? Regards ________________________________ From: englsprogeny1 To: AVR-Chat@yahoogroups.com Sent: Friday, 31 August 2012, 15:00 Subject: [AVR-Chat] Re: delay time is not reliable I have the same issue with a different board and build process. I've done
2012-08-31 by englsprogeny1
Fuse Settings: LOW Byte FF High Byte D9 I looked at an online fuse calculator: http://www.engbedded.com/fusecalc/ Everything looks ok. --- In AVR-Chat@yahoogroups.com, STEVEN HOLDER wrote: > > What are your fuse settings ? > > Regards > > > > ________________________________ > Fr
2012-08-31 by englsprogeny1
I have the same issue with a different board and build process. I've done this on my ATMega8 board now, building the HEX file using make. crystal 8Mhz I put the F_CPU value in the makefile as well as the global.h file. I program the ATMega8 board by way of ISP then unplug the pro
2012-08-31 by englsprogeny1
Hi John, I'm using an external makefile (my own). This means that I don't need to set processor speed in Project|Config Options Right? I see that processor speed is greyed out (in Config Options|General) Also, I see in Project Properties|Config Options|custom Options: [all files]
2012-08-31 by John Samperi
At 03:26 PM 31/08/2012, you wrote: >2. F_CPU is set correctly >#define F_CPU 7372800 But is this what you have in the project settings? _delay_ms is pretty accurate if it has the correct information. Are you using your own makefile or the Studio generated one? Regards John Samper
2012-08-31 by englsprogeny1
I'm doing a simple routine here. Output goes high output goes low for 5 ms output goes back to high. Problem is that when I scope the signal it is not low for exactly 5ms. It's 1.925 or 1.426 or 1.003ms (approximate times)(always less than 5 ms) Details: ATMeg16 JTAG interface to
2012-08-31 by Chuck Hackett
I am at our house in Tampa, Florida and I left my Dragon at our other house in Omaha. My wife will have it sent two-day UPS tomorrow (next-day-Saturday delivery was too much) so I'll have it on Monday but that doesn't help me over the weekend when I'm trying to update our rail cl
2012-08-24 by Philippe Habib
I once had a situation where I did not get a predictable POR because of the various paths from connected pins. Of course, you can't always avoid all of those. ----- Original Message ----- From: "John Samperi" To: AVR-Chat@yahoogroups.com Sent: Friday, August 24, 2012 2:27:17 PM S
2012-08-24 by John Samperi
At 12:32 AM 25/08/2012, you wrote: >So, what if GND as well as Vcc to the chip are both turned off, ..and what about the rest of the pins? Draw a box with as many I/O pins as the chip you are using has. Then draw 2 diodes, one to the ground pin and one to the VCC pin just like th
2012-08-24 by Cat C
You put it in a funny way, but sure it's better :-) It's (almost) like when people touch 400KV power lines and nothing bad happens because they are insulated from ground (it's actually a little more complicated but not far). Cat ---------------------------------------- > To: AVR-
2012-08-24 by Steven Hodge
So, what if GND as well as Vcc to the chip are both turned off, i.e., all uC power pins are isolated, but now from some other source a voltage is applied to an I/O pin (but is floating with respect to the uC)? Would that in and of itself be better than if GND were still connected
2012-08-24 by Clark Martin
On Aug 23, 2012, at 7:45 PM, Steven Hodge wrote: > So the chip can actually be powered on, eh? That explains a few > mysterious > things. Thanks, Steve Generally you can protect the chip and related circuitry by putting a resistor between the pin and power supplying circuitry. On
2012-08-24 by Steven Hodge
So the chip can actually be powered on, eh? That explains a few mysterious things. Thanks, Steve From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of John Samperi Sent: Thursday, August 23, 2012 2:30 PM To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat]
2012-08-23 by John Samperi
At 06:21 AM 24/08/2012, you wrote: >So what happens if there is no Vcc, i.e., there is no supply power >applied to the AVR, >but at the same time there happens to be Vcc on, say, a digital >input pin or a UART RX line? The chip will try and draw power from that line. It's VCC (an
2012-08-23 by Philippe Habib
Your talking about all the pulses (A and B) makes me think you may be reading quadrature scales. There are micros, such as the Rabbits or the Xmegas that have quadrature decoding built into the hardware. 200k pulses per second using the micro's built in quadrature decoding HW sho
2012-08-23 by Cat C
You may need a PID algorithm to decelerate before it reaches your needed position. ---------------------------------------- > To: AVR-Chat@yahoogroups.com > From: farshid32001@yahoo.com > Date: Thu, 23 Aug 2012 11:35:24 -0700 > Subject: Re: [AVR-Chat] Re: fast controller > > Sorr
2012-08-23 by Kasper Pedersen
On 08/23/2012 10:21 PM, Steven Hodge wrote: > > > I have a question which has been bugging me for some time. The data > sheet for an AVR, under absolute maximum ratings, usually says something > like “voltage on any pin…-0.5V to Vcc+0.5V”. So what happens if there is > no Vcc, i.
2012-08-23 by Steven Hodge
I have a question which has been bugging me for some time. The data sheet for an AVR, under absolute maximum ratings, usually says something like “voltage on any pin…-0.5V to Vcc+0.5V”. So what happens if there is no Vcc, i.e., there is no supply power applied to the AVR, but at
2012-08-23 by farshid alipour
Sorry I don’t understand “controlling each phase of the motor” I try to make a system for positioning control with accuracy about 10µm so I have to read all the pulses (A and B) so I can’t use overflow .11000rpm is not necessary for a servo motor for controlling an axis it is too
2012-08-23 by Alex Shepherd
I have used the libusb-win32 filter driver that lets the AvrDude libusb and the Atmel Jungo apps share the same AVRISP on USB one at a time which is conventient. Alex > -----Original Message----- > From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] > On Behalf Of Ph
2012-08-22 by David Kelly
On Aug 22, 2012, at 4:48 PM, Philippe Habib wrote: > That's 184 RPS, but he said he has 2048 points per rotation. I'm guessing a quadrature encoder that he has to read, determine direction and increment/decrement 374k times per second. I can see why he moved that part to hardware
2012-08-22 by Philippe Habib
That's 184 RPS, but he said he has 2048 points per rotation. I'm guessing a quadrature encoder that he has to read, determine direction and increment/decrement 374k times per second. I can see why he moved that part to hardware. ----- Original Message ----- From: enkitec@gmail.co
2012-08-22 by enkitec@gmail.com
On 22-Aug-12 17:12, farshid alipour wrote: > perhaps it is possible to use AVR i'll try it .i made a up/down counter by a mega16 for counting an encoder it was 2048 pulse when i rotate it slowly there was no any problem but when i rotate it over 500rpm it lost some pulses finally
2012-08-22 by Philippe Habib
I've been playing with the PSoC chips from Cypress which give you an 8051 or an ARM plus some CPLD like programmable hardware logic all on the same part and with a mesh to connect pretty much anything to anything. The supporting environment lets you have the HW portion generate i
2012-08-22 by farshid alipour
perhaps it is possible to use AVR i'll try it .i made a up/down counter by a mega16 for counting an encoder it was 2048 pulse when i rotate it slowly there was no any problem but when i rotate it over 500rpm it lost some pulses finally i made it by TTL ICs and now it work at 1100
2012-08-22 by farshid alipour
perhaps it is possible to use AVR i'll try it .i made a up/down counter by a mega16 for counting an encoder it was 2048 pulse when i rotate it slowly there was no any problem but when i rotate it over 500rpm it lost some pulses finally i made it by TTL ICs and now it work at 1100
2012-08-22 by Philippe Habib
I'm looking at App Note AVR069, which mentions licensing and using the Jungo driver to talk to the AVRISP. Has anyone done this? Is there any sample code available? From the Jungo web site, it seems like WindDriver is what you would use to create a driver and DriverCore might be
2012-08-22 by Tim Mitchell
----Original Message---- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of bonzadog Sent: 22 August 2012 15:59 To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] Re: fast controller > Could you please give an example. I do find it hard to > believe a
2012-08-22 by bonzadog
Could you please give an example. I do find it hard to believe a 100Mhz system is being overperformed by a much lower speed 16Mhz. Perhaps the HW (UI,UART,CAN etc) on the 16Mhz is perhaps faster or offers more possibilities? BD Am 20.08.2012 15:21, schrieb Tim Mitchell: > > ----O
2012-08-21 by Jim Wagner
Many do far more complex multi-axis servo control with far less than what you propose. Jim Wagner Oregon Research Electronics ----- Original Message ----- From: "farshid alipour" To: AVR-Chat@yahoogroups.com Sent: Tuesday, August 21, 2012 12:09:59 PM Subject: Re: [AVR-Chat] Re: f
2012-08-21 by farshid alipour
Hi I want to control some processes together for example control 4 servo axises , checking encoders etc , if I use a microcontroler for each process as a slave controler , in the end I'll need a fast microcontroler as a master to link them together. --- On Mon, 8/20/12, bonzadog
2012-08-21 by Bernd Felsche
On Tue, 21 Aug 2012 12:59:01 Cat C wrote: > So how is something "ending" in an RC, using a FET as a high > voltage switch better than a rail to rail buffer/amplifier that > offers high/known impedance to an RC placed before it, and low > impedance to the unknown load after it? Mo
2012-08-21 by Jim Wagner
If you can find a real rail-rail buffer, then, fine. They do generally cost more than a FET. On the other hand, output impedance is a lot lower so it might drive a substantial load. As usual, its an engineering problem where you have to evaluate lots of things and figure the trad
2012-08-21 by Cat C
So how is something "ending" in an RC, using a FET as a high voltage switch better than a rail to rail buffer/amplifier that offers high/known impedance to an RC placed before it, and low impedance to the unknown load after it? Cat > To: AVR-Chat@yahoogroups.com > From: wagnejam9
2012-08-21 by Riccardo Castellani
I'd like create my OpenSprinkler with my At-Mega8535 but I have no Arduino suite. I have simpl avr isp programmer MKII Suggestions ? Can I rebuild my library starting from Arduino library ? openSprinkler wit At-Mega8535 ----- Original Message ----- From: Mauro Zanin To: AVR-Chat@
2012-08-21 by Bernd Felsche
On Tue, 21 Aug 2012 06:14:40 Don Kinzer wrote: > --- In AVR-Chat@yahoogroups.com, Philippe Habib wrote: > > Can someone provide some guidance about how to size the capacitor > > and what type of capacitor is best suited for this type of thing? > You need a resistor in addition to
2012-08-21 by Jim Wagner
You did not say four channels, earlier. I think I would still do: FET: gate to PWM port pin, source ground, drain through pull-up resistor to higher voltage. Pull-up resistor could be as small as 1K ohms (10ma when FET is on if powered from 10V). Maybe smaller. If supply voltage