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2008-11-11 by Muhammad Amiruddin
i'm sorry before , but now i'm looking for a job, is there any job for microcontroller programmer especialy in Indonesia, if someone know please inform me. I have been searching on Internet but i haven't found it until now .. I need it so much. thanks before. --- On Sun, 11/9/08,
2008-11-11 by David VanHorn
On Mon, Nov 10, 2008 at 4:02 PM, Sander Pool wrote: > > This is probably obvious to the more experienced experimenters here but > when I worked with servos and a mega128 I had spurious problems with my > code that I traced back to the power supply getting 'hit' by the servos > wh
2008-11-11 by englsprogeny
Graham, Sorry about the lack of detail. Here's more: AVR Studio Version 4.14 Build 589 WinAVR GCC 20080610 ----------------code------------- #include void main(void) { volatile int count; volatile int marker; char readB; DDRB = 0x00; //all inputs PORTB = 0xff; //pullups DDRC = 0X
2008-11-10 by Sander Pool
This is probably obvious to the more experienced experimenters here but when I worked with servos and a mega128 I had spurious problems with my code that I traced back to the power supply getting 'hit' by the servos when they were being driven. Make sure you have separate power (
2008-11-10 by David VanHorn
>> The period between the pulses can be varied, shorter means more >> accurate control. I worked with this a while back on the 8515. With a longer delay between pulses, the servo wasn't active as much, and with extreme values, it turned into a "bang-bang-bang" kind of output, wit
2008-11-10 by David Kelly
On Mon, Nov 10, 2008 at 09:22:47AM -0500, David VanHorn wrote: > > Assuming you mean a radio-control type servo: > > You'll need to output pulses of the appropriate width, for each of the > servos that you are controlling. > You can probably find out the appropriate widths on goo
2008-11-10 by David VanHorn
On Sun, Nov 9, 2008 at 6:55 PM, wiyawan wrote: > hello, can you help me programing AVR to control servo motor ?, i > using atmega8535 and compiler use code vision. thx Assuming you mean a radio-control type servo: You'll need to output pulses of the appropriate width, for each of
2008-11-10 by Muhammad Amiruddin
i'm sorry mas, i can't help if you are using code vision, i used to playing avr with assembler language and use avr studio , so if you are using assembler language, you can change the registry per bit inside. to control servo motor so you can use the avr facilities timer as a PWM
2008-11-10 by David Appleton
There is an IC called: cp2102 This IC interfaces USB to the UART on your processor. [Non-text portions of this message have been removed]
2008-11-10 by Graham Davies
--- In AVR-Chat@yahoogroups.com, "englsprogeny" wrote: > Should I buy a better JTAG-ICE? > Should I use something else to debug > software? Thanks for your input. I don't think you've given us nearly enough information to do more than guess at your problem. What *version* of AVR
2008-11-10 by Eelco Jannink
Can it not be that your compiler does some optimizations ? Ik skips needless loops etc when optimized.... (is a compiler option) Eelco
2008-11-10 by bluesky_15_8
hi i am anew member to ur group i just want to ask about usb microcontroller and the programing of that kind is easy or what and thank u
2008-11-09 by wiyawan
hello, can you help me programing AVR to control servo motor ?, i using atmega8535 and compiler use code vision. thx
2008-11-09 by Cat
Try to disable all optimization in the compiler. -------------------------------------------------- From: "englsprogeny" Sent: Sunday, November 09, 2008 11:26 AM To: Subject: [AVR-Chat] Re: AVR Studio Update > Notes: > > 1. count and marker are both volatile > 2. I can get it to
2008-11-09 by englsprogeny
Notes: 1. count and marker are both volatile 2. I can get it to break with the following, as well. if(count >250){ marker = 0; [Breakpoint Here] count = 3; } It's almost like I need to have something set to zero before the breakpoint is triggered within an if statement. 4. I get
2008-11-09 by englsprogeny
I am playing with AvrStudio. I have a cheap JTAG-ICE debugger that I bought on ebay. Item number: 300240185362 The only way I can get this to hit a breakpoint [when in a loop] is to do the following: if(count >250) count = 0; [breakpoint here] Count is a loop counter. If I reset
2008-11-04 by Alexandre Guimarães
Hi, I have an application where using multimaster I2C would help me a lot, keeping time wasted in communication to a minimum. Searching for references I mostly have seen people that say that multimaster implementations using the TWI module is prone to problems, loosing bus arbitr
2008-10-28 by eric.rabinowitz@gmail.com
Sent from my Verizon Wireless BlackBerry -----Original Message----- From: "Don Kinzer" Date: Mon, 27 Oct 2008 15:15:01 To: Subject: [AVR-Chat] Re: Inductor at AVCC --- In AVR-Chat@yahoogroups.com, "Enki" wrote: >The current at that pin seems to be below 500uA, so a 10Ohm >inducto
2008-10-28 by Enki
On 27 Oct 2008 at 11:58, David VanHorn wrote: > On Mon, Oct 27, 2008 at 11:44 AM, Enki wrote: > > > > Considering I'm using the digital outputs to drive > MOSFETS > > and just two analog inputs, a 10Ohm (TEN OHM) inductor is not a > big > > deal. Will do some tests. > > Beware..
2008-10-27 by David VanHorn
On Mon, Oct 27, 2008 at 11:44 AM, Enki wrote: > > Considering I'm using the digital outputs to drive MOSFETS > and just two analog inputs, a 10Ohm (TEN OHM) inductor is not a big > deal. Will do some tests. Beware.. The static current drain is 0 into the gates, but you still have
2008-10-27 by Enki
Considering I'm using the digital outputs to drive MOSFETS and just two analog inputs, a 10Ohm (TEN OHM) inductor is not a big deal. Will do some tests. Thanks. Mark Jordan On 27 Oct 2008 at 15:15, Don Kinzer wrote: > --- In AVR-Chat@yahoogroups.com, "Enki" wrote: > >The current
2008-10-27 by David VanHorn
Generally speaking, more inductance is better. In reality, more inductance means also more resistance, and more interwinding capacitance. So, in a given system, over a range of similar type inductors, one particular inductor value will perform best. If you have a bulk supply avai
2008-10-27 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, "Enki" wrote: >The current at that pin seems to be below 500uA, so a 10Ohm >inductor (DC resistance) doesn't drop the voltage so much. Keep in mind that the AVcc pin provides all of the source current for the digital outputs that are on the same p
2008-10-27 by Enki
The ATMEGA48 datasheet shows a 10uH inductor connected to AVCC pin for filtering. Why 10uH? Could I use 220uH? The current at that pin seems to be below 500uA, so a 10Ohm inductor (DC resistance) doesn't drop the voltage so much. Mark Jordan
2008-10-27 by Tim Mitchell
----Original Message---- From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf Of leon Heller Sent: 27 October 2008 14:17 To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] Inductor at AVCC > ----- Original Message ----- > From: "Enki" > To: > Sent: Monday,
2008-10-27 by leon Heller
----- Original Message ----- From: "Enki" To: Sent: Monday, October 27, 2008 1:40 PM Subject: [AVR-Chat] Inductor at AVCC > > The ATMEGA48 datasheet shows a 10uH inductor connected to AVCC pin > for filtering. > > Why 10uH? Could I use 220uH? They probably use 10 uH because it wo
2008-10-26 by Alexandre Guimarães
Hi, I think I basically know the answer but decided to ask anyway ! I may be wrong :-) I am finishing a bootloader application for the ATMEGA324P and I will read the program from an external Flash and will not use any on-chip peripherals except for the SPI port. Do I have to init
2008-10-26 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, Alexandre Guimarães wrote: >I did not find any references about initial state of the >peripherals on the datasheet [...] In the datasheet, in every instance where a register is described in detail, showing the bit assignments for all 8 bits, you'l
2008-10-25 by John Samperi
At 05:52 PM 25/10/2008, you wrote: >What is an icp pin ? Surely this is a rhetorical question is it? :-) Because pretty much ANY AVR data sheet would be able to give you the answer. Just do a search for icp. Regards John Samperi ***************************************************
2008-10-25 by Rick B.
What is an icp pin ? --- On Fri, 10/24/08, ali valehi wrote: From: ali valehi Subject: [AVR-Chat] (unknown) To: AVR-Chat@yahoogroups.com Date: Friday, October 24, 2008, 2:59 AM I want to use icp pin in microcontroller to measure pwm I read avr135(atmel app note) and use it but it
2008-10-25 by ajajoom
--- In AVR-Chat@yahoogroups.com, "Rick B." wrote: > > What is an icp pin ? > > --- On Fri, 10/24/08, ali valehi wrote: > From: ali valehi > Subject: [AVR-Chat] (unknown) > To: AVR-Chat@yahoogroups.com > Date: Friday, October 24, 2008, 2:59 AM > input capture pin i think it use to
2008-10-25 by ajajoom
--- In AVR-Chat@yahoogroups.com, John Samperi wrote: > > At 05:52 PM 25/10/2008, you wrote: > >What is an icp pin ? > > Surely this is a rhetorical question is it? :-) > > Because pretty much ANY AVR data sheet would be able > to give you the answer. Just do a search for icp. > >
2008-10-24 by Jim Wagner
What do you mean by "it didn't work"? Jim Wagner Oregon Research Electronics On Oct 23, 2008, at 11:59 PM, ali valehi wrote: > I want to use icp pin in microcontroller to measure pwm > I read avr135(atmel app note) and use it but it didnt work > I want to get pwm from radio contr
2008-10-24 by ajajoom
--- In AVR-Chat@yahoogroups.com, Jim Wagner wrote: > > What do you mean by "it didn't work"? > > Jim Wagner > Oregon Research Electronics > > On Oct 23, 2008, at 11:59 PM, ali valehi wrote: > > > I want to use icp pin in microcontroller to measure pwm > > I read avr135(atmel app
2008-10-24 by ali valehi
I want to use icp pin in microcontroller to measure pwm I read avr135(atmel app note) and use it but it didnt work I want to get pwm from radio control reciver and after process use result to send another pwm to motor New Email addresses available on Yahoo! Get the Email name you
2008-10-23 by Julian Higginson
A crystal is only a part of a crystal oscillator circuit.. therefore crystals are specified to work in circuit in either a series or parallel mode, for a given load capacitance. Here's a bit of info on series vs parallel resonance. http://www.circuitcellar.com/library/print/0298/
2008-10-23 by Randy Glenn
The 18pF crystals are what's known as Parallel Resonant, and the Series ones are what's known as Series Resonant. It has to do with how you connect a load capacitance to the crystal to get it to oscillate. The important thing is, for microcontrollers, you want Parallel Resonant.
2008-10-23 by Eric Rabinowitz
crystals w/ caps are wired exactly the same as the resonator w/ capacitors, but the fuse settings will probably be different (ie: Settling time and low/high voltage). The base documentation is pretty good about describing it. There is also an app. note on the atmel website about
2008-10-22 by Don Kinzer
--- In AVR-Chat@yahoogroups.com, "Brian" wrote: > Under impedance is says 18pf and series. The specified impedance affects the size of the external load capacitors that you must use. There is a formula given in the crystal's datasheet that you can use to compute the size of the l
2008-10-22 by Brian
I was looking at Jameco for crystals. Under impedance is says 18pf and series. What is the difference on how they are hooked up to a uC? Brian
2008-10-22 by englsprogeny
I am thinking about playing with running an OS on my AVR projects. Any advice on the best ones? I see that the WinAVR manual lists many target operating systems: AvrX FreeRTOS TinyOS Contiki XMK pico OS uSmartX Super Simple Tasker (SST) ChibiOS/RT It doesn't appear that any of th
2008-10-18 by brewski922
Go to http://www.atmel.com/corporate/ and select "Oct 02, 2008 An Important Message from CEO Steven Laub" This is that . . . October 2, 2008 Dear Valued Customers and Business Partners, I am writing to update you on recent news about Atmel. This morning Atmel issued a release con
2008-10-18 by brewski922
Go to http://www.atmel.com/corporate/ and select "Oct 02, 2008 An Important Message from CEO Steven Laub" This is that . . . October 2, 2008 Dear Valued Customers and Business Partners, I am writing to update you on recent news about Atmel. This morning Atmel issued a release con
2008-10-17 by stevech11
You're talking about the simulator, not the assembler, right? --- In AVR-Chat@yahoogroups.com, "Dave VanHorn" wrote: > > For a long time now, I've maintained that studio is totally hosed. > > Atmel disagrees. > > I posted a pic (in the pictures area) which shows studio after > ex
2008-10-17 by stevech11
Keep an eye on avrfreaks.net. Much more there than here. --- In AVR-Chat@yahoogroups.com, Dave Miller wrote: > > Hello All, > > Since I have not been using AVR's for a couple years I have just stayed subscribed to this list because I wanted to make sure I keep up with the latest
2008-10-17 by John Samperi
At 05:22 AM 18/10/2008, you wrote: >At the point where we have executed the load of ZL, the value of ZH is >not $00.. David I have reported a fault with R30,R31 since Studio 3.x It is still there in V4.x but improving. It seems that there are in-fact 2 copies of R30,R31 and at ti
2008-10-17 by Dave Miller
Hello All, Since I have not been using AVR's for a couple years I have just stayed subscribed to this list because I wanted to make sure I keep up with the latest AVR info. I was following the thread about the Microchip takeover attempt with great interest. I am not a Microchip f
2008-10-17 by Dave VanHorn
For a long time now, I've maintained that studio is totally hosed. Atmel disagrees. I posted a pic (in the pictures area) which shows studio after executing the following code: clr ZH ldi ZL,01 At the point where we have executed the load of ZL, the value of ZH is not $00.. W T F
2008-10-08 by Gavin Dingley
Marxism in action comrade, capitalism eating it's self up, with nationalized banks as well! Gavin --- On Wed, 10/8/08, stevech11 wrote: From: stevech11 Subject: [AVR-Chat] Re: HOLY crap BATMAN! To: AVR-Chat@yahoogroups.com Date: Wednesday, October 8, 2008, 3:34 AM What I've read
2008-10-08 by Gavin Dingley
I think one of the main things about the AVR is that it's architecture lends it's self more to high level language constructs, such as pointers, making machine code compiled from C much more efficient. Gavin --- On Tue, 10/7/08, Zack Widup wrote: From: Zack Widup Subject: Re: [AV