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Results tagged with avr
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user 1200
AVR is a 8- and 32-bit microcontroller core developed by Atmel. AVR was chosen as microcontroller for the first generations of the popular Arduino SBCs.
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AVR programmer with serial to USB converter
I am struggling with making a usb programmer for Atmega. I couldn't get my hands on a proper FT232L or something like that, but I did manage to find a serial to usb converter like this. This gets dete …
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How to calculate loop delay in avr based architectures
I am trying to do some high time precision work (well not that high, but more than normal) and would need calculate the time delay generated by a small loop. Can anyone help me with that? These are ju …
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Serial programmer not working, what are the possible problem sources?
I have been trying to make a serial programmer for AVR chips. I have been using this schematic as reference, http://www.elektronika.lt/_sys/storage/2004/05/06/avr_prog.gif. … rick2047@Sophiya:~$ avrdude -p atmega8 -P /dev/ttyS0 -c ponyser -V -U flash:w:test1.hex
avrdude: AVR device not responding
avrdude: initialization failed, rc=-1
Double check connections and …
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AVR external clock problem
The confusion I have is with the clock the arduino uses 16MHz external and avr has its internal will it cause a problem if I use them in the same circuit? …
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Macros V/S inline functions while programming for avr-gcc
I have been doing my first serious work of programming these days. I have been exposed to a lot of code by different developers. One thing I find confusing is how do these developers decide when to us …
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MAX485 half duplex Atmega communication problem
I want two atmega32s to communicate over a range of 1000ft, so I decided to use a serial wire for it. I know rs232 is not a good way to communicate over this large range, so I decided to use RS485 whi …
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Resources to learn about the AVR/RISC architecture
I think I have used enough of the AVR series by atmel to say that I understand how to use it. I know somethings about how it actually works, but I would like to know more. …
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Start off with embedded C with ATmega32 (ATmega AVR series)
Now I have two questions:
What is the best free resource to start off with C for the avr series. I know of AVR-GCC but was looking for some tutorials or free books to start me off. …
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CharliePlexing on a breadboard
I was making a breadboard demo for a Microcontroller class. Basically my project is to make a score keeping device. I want to drive 4 seven segment displays using an atmega8. I read about charlie plex …
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