(If your lazy see bottom for TL;DR) Hello, I am planning to build a new (prototype) project dealing with physical computing. Basically, I have wires. These wires all need to have their voltage read at the same time. More than a few hundred microseconds difference between the readings of each wire will completely screw it up. The Arduino...
I want to set data breakpoint for TCNT1 register of ATMega16 in AVR Studio 4.17 Build 666. I add breakpoint by specifing in the Location field of "Add data breakpoint" window the value IO@0x2C. But breakpoint seems not work. Can some one help me how to setup a data breakpoint for an IO reginster? ...
Hi People I saw a lot of infos about MMC/SD cards and I tried to make a lib to read this.. (modifying the Procyon Avrlib) But I have some problems here. I Don´t change the original code and tried here. My problem is about the init of SD card. I have 2 here, a 256mb and another 1GB. I send the init commands like this order: CMD0, CMD55...
I'm a first year Computer Science student looking to get started with development for micro-controllers. I'd like to use the 8051, as it's common as dirt, and is used frequently in the real world. During my junior or senior year, I'll be taking a PIC micro-controller based embedded design class, so I'd rather not do PIC now; otherwise,...
Original Atmel jtag programmer costs $300. http://www.atmel.com/dyn/products/tools_card_v2.asp?tool_id=3353 http://search.digikey.com/scripts/DkSearch/dksus.dll?site=us&lang=en&mpart=ATJTAGICE2 Which clone do you recommend me? Are they 100% clones? (work with avr studio, same fw etc.) thanks. ...
Hello, I want to connect ATMEGA32 microcontroller to a shift register using USART via TXD pin, the shift register then performs serial to parallel conversion on the received data. but as you know, the shift register needs clocking , this clocking is fed via the microcontroller at baud rate frequency via XCK pin (here the USART acts as...
The main() function in an avr-gcc program saves the register state on the stack, but when the runtime calls it I understand on a microcontroller there isn't anything to return to. Is this a waste of RAM? How can this state saving be prevented? ...
in PHP, I have something like function doStuff($in, $value) { $var = "V_" . $in; $$var = $value; } Is there a way to do something similar in C? Basically I'm trying to figure out how to make a sort of library to make working with IO pins on an AVR easier. So for example, there would be a function to set a particular pin ...
hey friends, Can i programm the atmega48pa with avrdude? I have problems with the signature ... % avrdude -pm48 -cavrisp2 -Pusb -V -U flash:w:main.hex avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.01s avrdude: Device signature = 0x1e920a avrdude...
Is there a clever/efficient algorithm for determining the hypotenuse of an angle (i.e. sqrt(a^2 + b^2)), using fixed point math on an embedded processor without hardware multiply? ...
Can someone please explain how the Arduino bootloader works? I'm not looking for a high level answer here, I've read the code and I get the gist of it. There's a bunch of protocol interaction that happens between the Arduino IDE and the bootloader code, ultimately resulting in a number of inline assembly instructions that self-program ...
This is actually part of a project I'm working on using an avr. I'm interfacing via twi with a DS1307 real-time clock IC. It reports information back as a series of 8 chars. It returns in the format: // Second : ds1307[0] // Minute : ds1307[1] // Hour : ds1307[2] // Day : ds1307[3] // Date : ds1307[4] // Month : ds1307[5] // Yea...
I've got some code that needs to run every 2 minutes which seems simple enough. The problem seems that triggering a long running process from within a timer causes the timers to go wobbly? any suggestions. My C knowledge is not that great so help me out with some basic ideas. The MCU is an Atmel Mega128L The long running process is an ...
Hi! All I've a Good Command over C++, But I've never done anything anything on device programming. I've some basic understanding on Digital Logic Design. But I am complete Noob in Electronics. Currently I am getting huge interest on microcontroller Programming. Where To Start ? I don't think one really needs to have huge amount of know...
Hey all i am looking to decrypt my HEX code file for an ATTiny chip and programming it using the AVRDude command line interface. Problem being, i do not want the user to be able to see what the HEX file is at any given time. Can the VB.net Cryptography crypt the HEX file before i put it onto the server and then decrypt it after the prog...
Possible Duplicate: What good technology podcasts are out there? Are there good CS programming and Eletronics podcasts? Itunes U has a many classes turned into podcasts, but most of them are terrible to follow without video. ...
I have installed winAVR and AVR studio 4 for compiling code written in C for but i can't simulate it there is error"mega32.h-no such file or directory" ...
I'm working on a microcontroller DDS project in C and am having some trouble figuring out how to compute a linear interpolation to smooth the output values. The program as it stands now uses the top 8 bits of a 24 bit accumulator as an index to an array of 8 bit output values. I need to come up with a function that will take the middle...
I have inherited an application that links to a library which MAY HAVE been built with gcc3. Or maybe with the imagecraft compiler. That information has now vanished to the heavenly bitfield and I am left with a libXXX.a library against which to link my app. I cannot recompile the libXXX.a because it requires certain unknown headers from...