Which arm7 dev board to buy?

Started by aravind in comp.arch.embedded9 years ago 8 replies

Hi i've decided start learning ARM7 microcontrollers planning to buy this board http://www.olimex.com/dev/sam7-p64.html is it worth it?? Are...

Hi i've decided start learning ARM7 microcontrollers planning to buy this board http://www.olimex.com/dev/sam7-p64.html is it worth it?? Are there any other good arm7 boards (ATMEL or phillips LPC)


How to program AVR or 8051 with Serial Port?

Started by xelon in comp.arch.embedded14 years ago 20 replies

Hi, I'm working on my final year project. I'm going to use AT89C51AC3 or ATmega1280. Last term in Embedded Systems course, we used an...

Hi, I'm working on my final year project. I'm going to use AT89C51AC3 or ATmega1280. Last term in Embedded Systems course, we used an evaluation board(uses MSC1200Y3) that can be programmed over USB. I searched web site of Texas Instruments and find a application note that explains how to make it(In-System Serially Programming). I'm wondering that can I make it too with Atmel's microcont...


SPI Serial EEPROM design

Started by GMM50 in comp.arch.embedded15 years ago 12 replies

Hello: I'm starting up a new desing using 4 Atmel AT25HP512 devices connected to a 4 wire SPI interface. My question is does anyone have an...

Hello: I'm starting up a new desing using 4 Atmel AT25HP512 devices connected to a 4 wire SPI interface. My question is does anyone have an over view (pseudo code) of hew to Initialize Read Write Enable Write These devices. I've got all the C code writen but I'm missing something Thanks In Advance. George


How PC parallel port Is connected internally?

Started by Ali in comp.arch.embedded14 years ago 25 replies

I want to know how PC parallel port [DB-25] is connected internally , Is it connected to ISA or PCI bus? Actually I have designed a...

I want to know how PC parallel port [DB-25] is connected internally , Is it connected to ISA or PCI bus? Actually I have designed a small device with Atmel chip and now I want to write its plug and play driver for windows but this question is halting my coding phase. Thanks for your time.


SAMM7 + Bootloader

Started by Herbert Demmel in comp.arch.embedded13 years ago 2 replies

Hi everybody, I have 2 questions regarding AT91SAM7S64: (1) Bootloader is the BL in some ROM-area or is it located in FLASH like in Atmel...

Hi everybody, I have 2 questions regarding AT91SAM7S64: (1) Bootloader is the BL in some ROM-area or is it located in FLASH like in Atmel AVR controllers? (2) Selfprogramming of flash is it possible to re-program (part of) the FLASH while some other part of the program is still running (something like continous readout of port pins with communication to a host)? Thanks in advan...


Re: Microchip & OnSemi want to buy Atmel?

Started by Rich Webb in comp.arch.embedded11 years ago 4 replies

On Thu, 09 Oct 2008 10:31:26 -0400, Phil Hobbs wrote: > Jasen Betts wrote: > > On 2008-10-06, Martin Brown wrote: > > > > > The...

On Thu, 09 Oct 2008 10:31:26 -0400, Phil Hobbs wrote: > Jasen Betts wrote: > > On 2008-10-06, Martin Brown wrote: > > > > > The most obvious way is not always the most efficient algorithm. Certain > > > C constructs are hell for optimising compilers. And without using lint > > > (or a similar tool) there are far too man


atmega128 date/time management

Started by Didrik Pinte in comp.arch.embedded13 years ago 9 replies

Hi, I'm a newbie into embedded programming. The project i'm working on is based on an Atmel avr atmega128 device (with a GSM device connected...

Hi, I'm a newbie into embedded programming. The project i'm working on is based on an Atmel avr atmega128 device (with a GSM device connected to it). The environment used is IAR EW with AVRStudio. Using the time.h library, i try to get the actual time with the following code : --------------------------------------------------- time_t now; time(&now); printf("Time is %s\r\n", ctime(...


Lantronix X-Port

Started by Brian Fairchild in comp.arch.embedded14 years ago 1 reply

I'm looking for a simple embedded web server solution to run alongside an 8-bit processor (Atmel AVR). The Lantronix Xport looks interesting, a...

I'm looking for a simple embedded web server solution to run alongside an 8-bit processor (Atmel AVR). The Lantronix Xport looks interesting, a number of people here seem to use it. However, so maybe I'm going blind, but nowhere on the Lantronix web site can I see how you can setup your own web pages to load onto the Xport to allow communications to the outside world. Brian


Help writing a USB driver

Started by Mercy in comp.arch.embedded13 years ago 19 replies

Hi all, Any advice/pointers or instructions would be most helpful. I am still a newbie at embedded design so please humor me. I have a...

Hi all, Any advice/pointers or instructions would be most helpful. I am still a newbie at embedded design so please humor me. I have a datalogger module written using an Atmel 8051. I want to add a USB port to it so I can simply plug in a USB flash drive and have the data automatically downloaded as a formatted text file. I have read www.usb.org... but I still don't know where to sta...


Help writing a USB driver

Started by Mercy in comp.arch.embedded13 years ago

Hi all, Any advice/pointers or instructions would be most helpful. I am still a newbie at embedded design so please humor me. I have a...

Hi all, Any advice/pointers or instructions would be most helpful. I am still a newbie at embedded design so please humor me. I have a datalogger module written using an Atmel 8051. I want to add a USB port to it so I can simply plug in a USB flash drive and have the data automatically downloaded as a formatted text file. I have read www.usb.org... but I still don't know where to sta...


RTL8019as - Specific info needed.

Started by R.Wieser in comp.arch.embedded11 years ago 6 replies

Hello All, Some time ago (years actually) I encountered an article named the '25$ webserver'. It was about connecting a microcontroller to...

Hello All, Some time ago (years actually) I encountered an article named the '25$ webserver'. It was about connecting a microcontroller to an NE2000 compatible ISA network card. Just recently I thought it would be a nice project to connect a RTL8019as NIC to an Atmel Mega32 microcontroller and using assembly as the language-of-choice. A further googling found me a site using BasCom,...


ATmega8515 power consumption

Started by Meindert Sprang in comp.arch.embedded14 years ago 16 replies

I am struggling to get the power consumption of sensor device down. According to the datasheet (page 208, top graph), the ATmega8515 I use,...

I am struggling to get the power consumption of sensor device down. According to the datasheet (page 208, top graph), the ATmega8515 I use, uses slightly less than 1mA @ 3.3V and 1MHz internal clock while active. But I measure around 2.3mA. Even when I stop all I/O and go into an endless loop, it still uses 2.1mA. Is Atmel showing off here or am I missing something? Meindert


Looking for an embedded processor

Started by News in comp.arch.embedded13 years ago 4 replies

We currently use a MCF5272. We are discussing moving to a faster processor. I did a quick search among the various processors available and I...

We currently use a MCF5272. We are discussing moving to a faster processor. I did a quick search among the various processors available and I have a few observations. - Average ARM (Atmel) Processors seem to run at 40-50MHz. The high end 200-400Mhz were very expensive compared to 5275 ($10). - Power QUICC (400MHz) seems to be power hungry. 6W consumption. 5...


Speed/power tradeoff in ARMs

Started by rickman in comp.arch.embedded13 years ago 2 replies

I am looking a a project for a portable device, not a lot different from a PDA in terms of design. I would like to compare some of the ARM9...

I am looking a a project for a portable device, not a lot different from a PDA in terms of design. I would like to compare some of the ARM9 processors for performance vs. battery life to see just how much horsepower is compatible with a moderate battery size. I see that Atmel and Philips have new parts out. The new TI parts don't look like they are optimized for power and I don't think the...


Software UART driver

Started by Daniel Doron in comp.arch.embedded5 years ago 22 replies

Hi all, I have tried to look an answer for this on the web, but I mainly got "no can do" (timing issue). Kernel: 2.6.3x MCU: atmel at91...

Hi all, I have tried to look an answer for this on the web, but I mainly got "no can do" (timing issue). Kernel: 2.6.3x MCU: atmel at91 (9263) I wish to get/write a driver to bitbang a couple of gpios to emulate a uart. the communication is with a remote PIC (PIC12F683) to which I have already wrote the software and checked with linux terminal. the communication does not have to be fas...


general questions regarding ARMs

Started by Michael J. Noone in comp.arch.embedded14 years ago 36 replies

Hi - I'm fairly certain I'm going to use an ARM in a project I'm working on. I have a good deal of experience with Atmel AVRs, but I have never...

Hi - I'm fairly certain I'm going to use an ARM in a project I'm working on. I have a good deal of experience with Atmel AVRs, but I have never used an ARM before. So I was wondering if you all could answer a couple basic questions regarding ARMs: 1. programming: My understanding of programming an ARM is that you do it with a JTAG cable. I was looking at this one, specifically: http://olim...


AVR or PIC for a beginner

Started by [Frank] in comp.arch.embedded13 years ago 20 replies

I'm new to microcontrollers world. I have only a little experience with Z80 based systems. I saw some Atmel AVR's sources and I loved it:...

I'm new to microcontrollers world. I have only a little experience with Z80 based systems. I saw some Atmel AVR's sources and I loved it: very clear. Someone suggest me to start with PIC, someone else with AVR. The net is full of doc/projects about PIC and give me a bit of confusione; AVR much less...instead. What do you think about? What's the best approach for a beginner? Than...


How to reset an Atmel AT90CAN128 from software?

Started by Anonymous in comp.arch.embedded11 years ago 1 reply

Hello all. I'm looking for a relatively clean way to code a software reset for an AT90CAN128 or ATMEGA128 microcontroller using C code (or C...

Hello all. I'm looking for a relatively clean way to code a software reset for an AT90CAN128 or ATMEGA128 microcontroller using C code (or C with assemby embedded) that will compile under the avr-gcc 3.4.6 compiler chain. Essentially, I want a function softReset() that I can call from my program when appropriate that will reset and reinitialize everything, just as if a POR had occurred or t...


beginning arm

Started by a_edwards in comp.arch.embedded12 years ago 4 replies

hi i would like to purchase an arm dev. board to learn arm architecture and assembler and to improve my career prospects. I have previous 8...

hi i would like to purchase an arm dev. board to learn arm architecture and assembler and to improve my career prospects. I have previous 8 bit avr experience. It seems that there are many suppliers and variants available from uk suppliers, atmel,nxp,farnell,etc. can someone recommend a good general board that has many users and projects available thru the web and will give me more skills ...


Cheap STK500?

Started by johannes m.r. in comp.arch.embedded15 years ago 2 replies

Hello, Because I am such a slow dumbass Digikey (de.digikey.com) meanwhile raises the price for the Atmel STK500 from around 64 Euro to...

Hello, Because I am such a slow dumbass Digikey (de.digikey.com) meanwhile raises the price for the Atmel STK500 from around 64 Euro to around 110 Euro. Does anyone know if/where I can still find an STK500 for something around 70 instead of 110? Thank you! Regards, johannes