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2005-02-08 by lpc2100_fan
Hi, did not realize that you needed the port toggle and I agree that is a significant weekness of ARM-peripheral bus. Most devices in the market have the ports connected to the peripheral bus, ergo, some slow toggle. Exception (although I am biased ;-)) the Atmel SAM7. This devic
2005-02-08 by Zack Widup
74HC574 is an octal D-type flip-flop. D1 through D8 are the inputs and Q1 through Q8 are the outputs of the flip-flops. They are being used here in a standard R-2R ladder network D/A converter scheme. Zack On Tue, 8 Feb 2005, Luke.Wei(ºa¥úªº¸¨¤é-Honor of Sun-Down) wrote: > > ---
2005-02-08 by Paul Maddox
Luke, > Excuse to engilsh . > Because i want buy electronics to try . ahh, the squares on the right of the 74hc574s? Those are resistors, with different values (shown to the right) . Paul
2005-02-08 by Luke.Wei
--- In AVR-Chat@yahoogroups.com, "Paul Maddox" wrote: > Luke, > > > Please tell me connect 74HC574 Q1-Q8 pin's parts is what ? > > sorry, I don't understand the question, > the 'Q' number insdie the device refers to the latch number inside the > device.. > the 'Q' number on outpu
2005-02-08 by Jon Hylands
On Tue, 8 Feb 2005 12:18:21 -0000, "Paul Maddox" wrote: > after some conversations and digging, > its not a problem withthe ARM7 core, but it is a problem with the glue > logic, philips has this problems, others may also, so its 'suck it and see'. > What really annoyed me was I c
2005-02-08 by Paul Maddox
Jon, > Have you looked at some of the products Randy sells at www.newmicros.com ? > > He's got a few ARM7 boards, and a bunch of Iso-whatever boards that run on > 40 MIPS Motorola MCUs. thanks, some interesting looking stuff, I'll have a look. Paul
2005-02-08 by leon_heller
--- In AVR-Chat@yahoogroups.com, Jon Hylands wrote: > On Tue, 8 Feb 2005 09:05:18 -0000, "Paul Maddox" > wrote: > > > Its a really BIG shame as I had several uses for it, but I'm sorry the IO is > > just absurdly slow. > > A waste of, potentially, a great chip! > > Is that a gene
2005-02-08 by Jon Hylands
On Tue, 8 Feb 2005 09:05:18 -0000, "Paul Maddox" wrote: > Its a really BIG shame as I had several uses for it, but I'm sorry the IO is > just absurdly slow. > A waste of, potentially, a great chip! Is that a general property of the ARM7 chips, or something specific for that Phili
2005-02-08 by Paul Maddox
Jon, > Is that a general property of the ARM7 chips, or something specific for > that Philips board? after some conversations and digging, its not a problem withthe ARM7 core, but it is a problem with the glue logic, philips has this problems, others may also, so its 'suck it and
2005-02-08 by Paul Maddox
Luke, > Please tell me connect 74HC574 Q1-Q8 pin's parts is what ? sorry, I don't understand the question, the 'Q' number insdie the device refers to the latch number inside the device.. the 'Q' number on output refers to the 'bit' value where Q15 is the biggest and Q0 is the sma
2005-02-08 by Paul Maddox
Hi, > my name indicates that I am a little biased ;-) thats ok :-) > For floating point it helps a lot to have a 32-bit architecture at a > similar price. Hope I won'y get banned for helping somebody out here. yep, I agree 32 bit would be lovelly. > A little faster could be an AR
2005-02-08 by Luke.Wei(ºa¥úªº¸¨¤é-Honor of S un-Down)
--- In AVR-Chat@yahoogroups.com, "Paul Maddox" wrote: > All, > > as we're on the subject (my favourite), I thought I'd forward this link for > a website I setup on my server ;- > Www.Jarek.Synth.Net > > he's build a complete MIDI synth on a single 90s8535.. I'm trying to get the
2005-02-08 by wbounce
>From the help of AVR studio -- quote Sometimes you may experience problems when loading AVR Studio 4 projects. Close AVR Studio and remove the project file (.aps). Then startup AVR Studio and try again by creating a new project. Usually the initialized EEPROM data or SRAM is aut
2005-02-08 by wbounce
First, volatile const uint8_t * TargetPointer; is declared that way because unless I added the const gcc complains I think what I am supposed to be doing there is declaring TargetPointer to be a pointer to a constant unsigned byte (ie uint8_t) The array Room1 is an array of const
2005-02-07 by Mike Murphree
Jim Wagner said: > > Javier - > > Doing what you suggest is difficult. It is not difficult to > measure signal strength (of many signals, including radio). > The problem is that, at almost all frequencies (from audio > to light) there are reflections that result in constructive >
2005-02-07 by lpc2100_fan
Hi Paul, my name indicates that I am a little biased ;-) For floating point it helps a lot to have a 32-bit architecture at a similar price. Hope I won'y get banned for helping somebody out here. A little faster could be an ARM7 running at up to 60 MHz like the LPC2000 family fro
2005-02-07 by Jim Wagner
Javier - Doing what you suggest is difficult. It is not difficult to measure signal strength (of many signals, including radio). The problem is that, at almost all frequencies (from audio to light) there are reflections that result in constructive or destructive interferance. Lig
2005-02-07 by sahand_niche
salam be doostdarane microcontroller biayn in group ozv shin: http://groups.yahoo.com/group/iran_microcontroller
2005-02-07 by Dave VanHorn
At 10:46 AM 2/7/2005, Paul Maddox wrote: >Hi, > > well, I've found these 8051 based ones from Maxim/Dallas, >http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4078/ln/ > > not as well designed as the AVRs, but I've ordered one as a sample to try >and compare the speed, tey're faster
2005-02-07 by Jose Fuentes
Some comments: //why do you declare TargetPointer as const? volatile const uint8_t * TargetPointer; //try this instead of using TempPointer, TargetPointer switch (Room1[0]) //also, don't forget the 'break' sentence after //every case block Regards Jose --- wbounce escribió: > > I
2005-02-07 by Paul Maddox
Hi, well, I've found these 8051 based ones from Maxim/Dallas, http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4078/ln/ not as well designed as the AVRs, but I've ordered one as a sample to try and compare the speed, tey're faster (33MIPs) but don't have things like a hardware multi
2005-02-07 by Mike Murphree
Russell Shaw said: > > I've thought of resurrecting the adsp gnu tools because > the sources are still around and i have a copy (i've used > adsp-2181 years ago). It's a bit high up on the project stack tho:( > There was a company selling a CD containing the compiled version of t
2005-02-07 by Leon Heller
----- Original Message ----- From: Tzif To: AVR-Chat@yahoogroups.com Sent: Monday, February 07, 2005 1:12 PM Subject: RE: [AVR-Chat] AVR Music Hi Leon I have some samples of the AT908535 I can sell you some if you like Please let me know It wasn't I who needed them. I've got plen
2005-02-07 by Tzif
Hi Leon I have some samples of the AT908535 I can sell you some if you like Please let me know Tzif -----Original Message----- From: Leon Heller [mailto:leon.heller@dsl.pipex.com] Sent: Monday, February 07, 2005 3:07 PM To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] AVR Mus
2005-02-07 by Dingo
That is pretty cool, any photos and / or wav files of the output? ----- Original Message ----- From: Paul Maddox To: AVR-Chat@yahoogroups.com Sent: Monday, February 07, 2005 9:55 PM Subject: [AVR-Chat] AVR Music All, as we're on the subject (my favourite), I thought I'd forward t
2005-02-07 by Paul Maddox
Hi, Thanks, but I'd like to try and improve on the project aswell. perhaps adding an extra oscillator or maybe a couple of extra features. so the added speed from the mega device (and space in the Mega16) would be a great help for this. Paul ----- Original Message ----- From: "Tz
2005-02-07 by Paul Maddox
Leon, > How about the Mega8535? yep, but I only have some MEGA16s at home :-) Paul
2005-02-07 by Leon Heller
----- Original Message ----- From: Paul Maddox To: AVR-Chat@yahoogroups.com Sent: Monday, February 07, 2005 12:43 PM Subject: Re: [AVR-Chat] AVR Music Dingo, Last time I asked Jarek, he said he didn't have any samples. As the 8535 is now obsolete, I plan to 'port' the code to a M
2005-02-07 by Paul Maddox
Dingo, Last time I asked Jarek, he said he didn't have any samples. As the 8535 is now obsolete, I plan to 'port' the code to a MEGA16, I'll then pass it to Jarek to publish. It should be a very simple job. Anyway, once I've done that I'll send him some samples to put up. Paul --
2005-02-07 by Stefan Trethan
On Mon, 07 Feb 2005 22:16:12 +1100, Russell Shaw wrote: > > I've thought of resurrecting the adsp gnu tools because > the sources are still around and i have a copy (i've used > adsp-2181 years ago). It's a bit high up on the project stack tho:( > I've used the 2181 before for a
2005-02-07 by Russell Shaw
Leon Heller wrote: > ----- Original Message ----- > From: Paul Maddox > To: AVR-Chat@yahoogroups.com > Sent: Monday, February 07, 2005 10:37 AM > Subject: Re: [AVR-Chat] Re: something a bit faster > > Russell, > >>Because it's a musical thing, it would be hard to make shortcuts.
2005-02-07 by Paul Maddox
All, as we're on the subject (my favourite), I thought I'd forward this link for a website I setup on my server ;- Www.Jarek.Synth.Net he's build a complete MIDI synth on a single 90s8535.. I'm trying to get the parts to build one and do some samples, its dinky! Paul
2005-02-07 by Leon Heller
----- Original Message ----- From: Paul Maddox To: AVR-Chat@yahoogroups.com Sent: Monday, February 07, 2005 10:37 AM Subject: Re: [AVR-Chat] Re: something a bit faster Russell, > Because it's a musical thing, it would be hard to make shortcuts. yeah, I've done what I can, its 'ok
2005-02-07 by Russell Shaw
Paul Maddox wrote: > Russell, > >>But that's still not answering the Q;) > > hehe, fair point. > >>If you're doing unneccessary averaging or something, you could do it once >>every 10th time around the superloop or whatever. I do a ton of realtime >>dsp control stuff with floatin
2005-02-07 by Paul Maddox
Russell, > Because it's a musical thing, it would be hard to make shortcuts. yeah, I've done what I can, its 'ok' now, but I'm still looking. Renesas have a Starterkit, but unfortunatly it seems only to be a US product, and the FAE is not returning any calls.. > An alesis dsp wou
2005-02-07 by Paul Maddox
Russell, > But that's still not answering the Q;) hehe, fair point. > If you're doing unneccessary averaging or something, you could do it once > every 10th time around the superloop or whatever. I do a ton of realtime > dsp control stuff with floating point on an at90s8535. its
2005-02-07 by Lee Leathers
ahh..nm.. I figured out how to write my own makefiles :)) Let me test out your code. thanks!!! Lee ----- Original Message ----- From: Brian Dean To: AVR-Chat@yahoogroups.com Sent: Sunday, February 06, 2005 6:01 PM Subject: Re: [AVR-Chat] Re: Hardware i2c with atmega 32 Hi Lee, On
2005-02-07 by Dave Hylands
Hi Lee, This library: http://hubbard.engr.scu.edu/embedded/avr/avrlib/ has some i2c routines to support both interrupt driven and non-interrupt driven hardware TWI. I was able to get it up and working fairly easily. -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com
2005-02-07 by John Samperi
At 09:42 AM 7/02/2005, you wrote: >Hi, > >I've got > AVR Studio 4.05 > STK500 Studio 4.11 has been out for a few weeks if you would like to update. Regards John Samperi ****************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hill
2005-02-07 by wbounce
I am having trouble debugging a piece of code that used to work. I using avr-gcc (GCC) 3.4.1 with AVR Studio 4.10.356 as my debugging tool dwarf-2. I have the following code which is not working. The listing shows Room1 as it should but in AVR Sutdio it does not show up correctly
2005-02-07 by Lee Leathers
hmm. .actually it looks like the hole make file is written for use with linux :/ man.. the i2cscan looks sooo promosing too :) thanks though Lee ----- Original Message ----- From: Brian Dean To: AVR-Chat@yahoogroups.com Sent: Sunday, February 06, 2005 6:01 PM Subject: Re: [AVR-Ch
2005-02-07 by Lee Leathers
hmm.. I am on a windows computer.. so the make file doesn't exacully work.. It says it cannot find awk ref in the makefile: @awk '/# .Id/,/^# DO NOT DELETE/' Makefile > Makefile.new What should this be then? thanks! Lee ----- Original Message ----- From: Brian Dean To: AVR-Chat@y
2005-02-07 by wbounce
This turns out to have been a header pin with a bad connection of the PWM pin. This meant the left side was getting 100% because the pwm pin was pulled high with pull up resistors. -----Original Message----- From: Brian Dean [mailto:bsd@bdmicro.com] Sent: Friday, January 28, 2005
2005-02-07 by James Washer
Often, when you load a newer version of Studio, it loads new "firmware" down to the STK500, iirc - jim On Sun, 6 Feb 2005 15:42:10 -0700 "Jim McGinn" wrote: > Hi, > > I've got > AVR Studio 4.05 > STK500 > hardware Rev. C-2 > firmware revsion 1.30 > > A friend of mine has > AVR St
2005-02-06 by Brian Dean
Hi Lee, On Sun, Feb 06, 2005 at 02:36:14PM -0500, Lee Leathers wrote: > I really needed C code. I think I've come to this thread late, so I'm not sure exactly what you are doing, Lee, but I have some sample code on my web site for talking to several different I2C devices using my
2005-02-06 by Jim McGinn
Hi, I've got AVR Studio 4.05 STK500 hardware Rev. C-2 firmware revsion 1.30 A friend of mine has AVR Studio 4.06 STK500 hardware Rev. C-2 firmware revsion 1.40 His computer works with his STK500, and my computer works with mine, but my computer cannot talk to an ATmega8 in his ST
2005-02-06 by sami saqqa
try this link it has alot if projects there is an IR radar system that display the poistion on a TV and some stepper motor projects and much more http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/ Do you Yahoo!? Yahoo! Search presents - Jib Jab's 'Second Term'
2005-02-06 by Lee Leathers
I really needed C code. I will still check that link out. thanks! Lee ----- Original Message ----- From: Joe To: AVR-Chat@yahoogroups.com Sent: Sunday, February 06, 2005 1:39 PM Subject: [AVR-Chat] Re: Hardware i2c with atmega 32 The is some code on the Bascom list. http://groups
2005-02-06 by Stefan Trethan
On Sun, 06 Feb 2005 12:30:34 -0500, Dave VanHorn wrote: > > This is not necessarily the fastest approach, but it's simple. > During moving, if you hit the end of the accel table, then you just stay > at > that max speed, until you're N steps from your destination, where N is > th
2005-02-06 by Joe
The is some code on the Bascom list. http://groups.yahoo.com/group/bascomlist/files/ look for TWI --- In AVR-Chat@yahoogroups.com, "Lee Leathers" wrote: > Hello, I am toying around with an mcp23016 (i2c port expander) with my atmega 32. > > I have everything hooked up right.. but