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2007-03-13 by Richard Austin
You're using string1 ie.'i Good idea... i checked the execution and of the for loop and it didnt go with the summation. i checked again my for loop statement and i see a misplaced semicolon though far but was not commented out... HUHh... thus doing nothing on for loop:D > > thank
2007-03-13 by mago Umandam
Good you mention about CRC. for now, i just get the sum and 2's compliment. But i look forward on doing CRC in the future. never did that yet :) regards mago John Samperi wrote: At 04:10 PM 13/03/2007, you wrote: >i would like to get the sum of values of characters in a string. A
2007-03-13 by John Samperi
At 04:10 PM 13/03/2007, you wrote: >i would like to get the sum of values of characters in a string. Are you just going to sum all the values of the characters or will you need something a bit more robust like CRC16? Regards John Samperi ******************************************
2007-03-13 by mago Umandam
Good idea... i checked the execution and of the for loop and it didnt go with the summation. i checked again my for loop statement and i see a misplaced semicolon though far but was not commented out... HUHh... thus doing nothing on for loop:D thanks mago Jim Wagner wrote: Have y
2007-03-13 by Mat Tubb
Hello all, I am looking for an experienced programmer/designer to assist with a project we are working on. The project entails reading a NMEA string from a GPS and substituting certain non used fields with specific data for a telemetry system. If you are interested in this projec
2007-03-13 by Jim Wagner
Have you checked the exection of the "for" loop in the debugger? Jim On 12 Mar 2007 22:10:47 -0700,Tue, 13 Mar 2007 05:10:11 -0000 "magzky02" wrote: > i would like to get the sum of values of characters in a > string. I > use to get the checksum. > > ex. > strcopy(string1, "abcde
2007-03-13 by magzky02
i would like to get the sum of values of characters in a string. I use to get the checksum. ex. strcopy(string1, "abcdefghigklmnopqrstuvwxyz"); this does not work: sum=0; for (i = 0; i
2007-03-13 by dlc
I quote from an Atmel data sheet: The reference voltage for the ADC (VREF) indicates the conversion range for the ADC. Single ended channels that exceed VREF will result in codes close to 0x3FF. VREF can be selected as either AVCC, internal 2.56V reference, or external AREF pin.
2007-03-13 by enkitec@gmail.com
ATMega48 ADC using the 1.1V internal reference. What will be the ADC reading when its input is connected to 2.7V? - $03FF ? Before I try solving this question myself, maybe someone has the answer... Thanks. Mark Jordan
2007-03-12 by Les Grant
The biggest they seem to make is only 28 ways. Thanks. On 11 Mar 2007 at 12:17, Leon wrote: > ----- Original Message ----- > From: "Les Grant" > To: > Sent: Sunday, March 11, 2007 11:45 AM > Subject: Re: [AVR-Chat] 54 way 0.5mm pitch FFC/FPC connectors > > > > Hi Bob, > > > > Tha
2007-03-11 by kernels_nz
Hi David, I live in Auckland, so am well familiar with the issues you have. I have found the guys at Apex Electronics to be very helpful and they carry a pretty good range of processors. There is another company in Mt Wellington that sell some, but I cant remember their name righ
2007-03-11 by Les Grant
Hi Bob, Thanks for the pointer. But, the largest FPC connector (ZF5 series) Samtec admit to making is either 30, 43 or 50 ways depending on where you look... Regards, Les. On 10 Mar 2007 at 7:56, BobGardner@aol.com wrote: > Samtec Sudden Samples! > *******************************
2007-03-11 by Leon
----- Original Message ----- From: "Les Grant" To: Sent: Sunday, March 11, 2007 11:45 AM Subject: Re: [AVR-Chat] 54 way 0.5mm pitch FFC/FPC connectors > Hi Bob, > > Thanks for the pointer. But, the largest FPC connector (ZF5 series) > Samtec admit to making is either 30, 43 or 50
2007-03-11 by John Samperi
At 09:20 AM 11/03/2007, you wrote: >i heard that C language >will be more easier than assemply , It isn't if you just start from the beginning and haven't used C before. >but i can't find a site or a pdf to explain the C syntax for >atmega8515 , avrfreak.net has a GCC forum (one
2007-03-10 by David Appleton
OK.... I feel a real plonker..... I need to do this using a Null-Modem cable. I switched Rx and Tx on the Micro sided of the MAX232... but didn't think "Hey David.... they need to be switched on the PC-interface side of the MAX232."... I'll get a nullmodem cable.... or modify thi
2007-03-10 by David Appleton
A am using on "off the shelf" board. It has a MAX232. I attached a schematic AVR-P28 http://www.olimex.com/dev/images/avr-p28-sch.gif [Non-text portions of this message have been removed]
2007-03-10 by Mohammed
hi every body i want to develope a code for atmeg8515 . i used to write in assemply using avr . but this time the programme will be very big and also complicated . i heard that C language will be more easier than assemply , but i can't find a site or a pdf to explain the C syntax
2007-03-10 by Zack Widup
Heehee - that too! ;-) Zack On Fri, 9 Mar 2007, Ken Arck wrote: > At 08:05 AM 3/9/2007, you wrote: > > > >You don't say much about your circuit. Are you using a TTL-to-RS232 > >converter chip such as the 1488-1489 or MAX232? > > > >Some people overlook these and wonder why their
2007-03-10 by larry barello
Anyone have working C (preferably AVR) code to initialize and write some bits to the Crystalfontz 160x80 bit display? I have some code from the support forum that I ported, I have gone through the manual (which has several layers of typos) and I have gone through every single bit
2007-03-10 by BobGardner@aol.com
Samtec Sudden Samples! ************************************** AOL now offers free email to everyone. Find out more about what's free from AOL at http://www.aol.com. [Non-text portions of this message have been removed]
2007-03-10 by Les Grant
Hi All, I am looking for a small quantity (up to 50) of these connectors for a project using a small colour LCD panel. The LCDs are easy to get but the connectors seem to be 'as rare as hen's teeth'. I have found several vendors who stock them up to 50 ways. Does anyone know of a
2007-03-10 by Captain Impala
Hi Guys, Sorry to spam, but I would like to invite any interested parties to the St Louis Missouri Robotic Maze Solving Comp on April 28 2007 at 11am Located at the Winfield VFW Post #5517 on Hwy EE. This event is being hosted by The St Louis Area Robotic Society in cooperation w
2007-03-09 by John Clymer
Some things to check - how does your library implement outp() and inp() - do they hard code to assembler inp and outp instructions, or are they C macros that do the right thing when the address > 0x3F? (The machine instructions inp and outp only work on the lowest 64 bytes of the
2007-03-09 by Dennis Clark
Do you have RS232 level shifting hardware? DLC englsprogeny wrote: > Hi everyone. > > I am trying to get an ATMEGA8 to talk to a terminal app on my PC by > RS232. I have used the compiler [WinAVR] and programmer [PONY ISP] > to compile and run other programs so I know that these
2007-03-09 by Ken Arck
At 08:05 AM 3/9/2007, you wrote: >You don't say much about your circuit. Are you using a TTL-to-RS232 >converter chip such as the 1488-1489 or MAX232? > >Some people overlook these and wonder why their RS232 equipment isn't >decoding the TTL source.
2007-03-09 by Zack Widup
You don't say much about your circuit. Are you using a TTL-to-RS232 converter chip such as the 1488-1489 or MAX232? Some people overlook these and wonder why their RS232 equipment isn't decoding the TTL source. Zack On 9 Mar 2007, englsprogeny wrote: > Hi everyone. > > I am tryin
2007-03-09 by englsprogeny
Hi everyone. I am trying to get an ATMEGA8 to talk to a terminal app on my PC by RS232. I have used the compiler [WinAVR] and programmer [PONY ISP] to compile and run other programs so I know that these parts of the issue are OK. Here is the source.... Any ideas? I have an 8Mhz o
2007-03-08 by AVR Development
I've been very busy but with an hour here and an hour there I got it working. There were a few headaches but surprisingly there was very little drinking involved. I have the Micrium uC/OS-II Real-Time Operating System compiled under the ImageCraft Compiler (ICCV7) for the AVR ATm
2007-03-07 by Venkat Nagappan
hi come in yahoo chat me too doing projects on AVR, we shall help one other regards, Venkat Hariyanti Bt Mohd Saleh wrote: I am a beginner in AVR. Can I ask.. how much 'electrical current' needed to 'on' one port adc ATmega8535 avr? --------------------------------- Here's a new
2007-03-05 by David McNab
On Mon, 2007-03-05 at 08:17 +0000, Hariyanti Bt Mohd Saleh wrote: > I am a beginner in AVR. Can I ask.. how much 'electrical current' > needed to 'on' one port adc ATmega8535 avr? In the datasheet for ATmega8535, there should be sections toward the end which discuss the current u
2007-03-05 by Hariyanti Bt Mohd Saleh
I am a beginner in AVR. Can I ask.. how much 'electrical current' needed to 'on' one port adc ATmega8535 avr?
2007-03-02 by Alex Shepherd
Hi David, > Try https://www.soanarplus.com/default.jsp?xcid=1 I just got a catalogue from these guys arrive in the post just today. I had a quick look and they didn't have Tiny84/85. Alex
2007-03-02 by Roy
Hi David Try https://www.soanarplus.com/default.jsp?xcid=1 They sell direct to public at good prices, haven't checked for the actual parts but they do carry a good range of ATMEGA etc. What part of NZ are u in? _______________________________________ Roy Hopkins ZL2RJH Tauranga N
2007-03-02 by John Samperi
At 12:01 AM 28/02/2007, you wrote: >I'm an AVR newbie (converting from PIC), looking to get hold of some >ATtiny84/85 devices. Do you need BOTH of them (1 is a 20 pin device the other 8 pin) Do you need the 8K version? Farnell (oz) shows the 4k Tiny45 as awaiting delivery so it i
2007-03-02 by Ivan Vernot
Hi David, Welcome. Sorry I can't help you directly (I don't use the Time84/85) I am writing as your have the same name as a former colleague and I am curious as to how small the world can be ;-) Have you ever done software development in Oz? Specifically, working for a small comp
2007-03-02 by John Samperi
At 01:25 AM 28/02/2007, you wrote: >Flash rom is full. Make strings smaller, get AVR with bigger flash? Hey Bob, looks like you have found the niche AVR group also :) This is much more cozy like the old HC11 list. Regards John Samperi *********************************************
2007-03-01 by Mark Weston
Brian Dean (BDMicro) and Eddy Wright (WrightHobbies) have been working on an AVR solution to the serial master/slave scenario called MojoBus, and you can get details at mojobus.com. Mark Weston sweetrobotics.com --------------------------------- All new Yahoo! Mail - ------------
2007-03-01 by omid2007ir
THX for send to me that link but i need SmartCard reader/wirter that like is about MMC/SD card reader --- In AVR-Chat@yahoogroups.com, Ricardo Callejo wrote: > > The best documentation http://www.roland-riegel.de/sd-reader/doc/ > > > > Ricardo Callejo > > Argentina > > _____ > >
2007-03-01 by mago Umandam
Hi all thanks guys for suggestions.. seems everybody is talking about rs422/rs485. im doing some reading about this protocol and searching rs485 ic's.this is not long distance communication. they are actually near with each other about 2 feet max. somebody mentioned about address
2007-02-28 by Jim Wagner
Yes, have used both RS422 and RS485. The original post said nothing about that. Just UART with a number of slaves and some control lines. There was not enough information to answer his question(s). Jim On Wed, 28 Feb 2007 14:49:40 -0300 Ricardo Callejo wrote: > Jim, did you read
2007-02-28 by Ricardo Callejo
Jim, did you read something about RS485/RS422? They support 1200 meters, using resistors on each end line. 120 ohms between lines of the transceiver and 680 ohms to VCC from one wire and 680 ohms to ground from the other wire. Vcc 680ohms 1st Terminal 120 Ohms 2nd Terminal 680 oh
2007-02-28 by Ricardo Callejo
Jim, did you read something about RS485/RS422? They support 1200 meters, using resistors on each end line. 120 ohms between lines of the transceiver and 680 ohms to VCC from one wire and 680 ohms to ground from the other wire. Vcc 680ohms 1st Terminal 120 Ohms 2nd Terminal 680 oh
2007-02-28 by Ricardo Callejo
The best documentation http://www.roland-riegel.de/sd-reader/doc/ Ricardo Callejo Argentina _____ De: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] En nombre de omid2007ir Enviado el: Miércoles, 28 de Febrero de 2007 02:22 p.m. Para: AVR-Chat@yahoogroups.com Asunto:
2007-02-28 by Jim Wagner
Are you using any sort of interface (transmitter/receiver)? What is the distance from the host and the slaves? Do you have an enable line for every slave? Are those lines buffered? Jim On Wed, 28 Feb 2007 08:14:43 -0000 "magzky02" wrote: > > Hello guys > > my master controller is
2007-02-28 by Dennis Clark
I have used RS485 to do this as a master/slave half-duplex system with one master and 8 slaves. RS485 is nice in that all you need to use is two IO lines to any unit. Address arbitration is handled by using "9th bit" serial which all USARTs support, and many will interrupt on. Ch
2007-02-28 by omid2007ir
i need Smar Card Reader /Wirter with AVR,who can help to me?
2007-02-28 by Jim Wagner
Floating point will always create larger code and use more RAM than fixed point or integer. And, it is a LOT worse if you use transcendental functions. Jim On Wed, 28 Feb 2007 04:12:32 +0000 (GMT) murugesan kudiyarasu wrote: > really so sorry , i am working for a concern ,they do
2007-02-28 by Roy E. Burrage
I think if you look at their specifications you'll see that both are essentially the same as far as communication mechanism goes in that they're both designed for separate transmit and receive line pairs. National Semiconductor has a good application note, AN-759, that compares t
2007-02-28 by Tim Mitchell
Leon wrote: > ----- Original Message ----- > From: "Tim Mitchell" > To: > Sent: Wednesday, February 28, 2007 10:30 AM > Subject: RE: [AVR-Chat] When boyscouts say one for all, all for one > > >> Leon wrote: >>> >>> RS-485 is one way. You could also daisy-chain the slaves and use
2007-02-28 by Leon
----- Original Message ----- From: "Tim Mitchell" To: Sent: Wednesday, February 28, 2007 10:30 AM Subject: RE: [AVR-Chat] When boyscouts say one for all, all for one > Leon wrote: >> >> RS-485 is one way. You could also daisy-chain the slaves and use the >> UARTs, with each slave