All Questions
Tagged with arduino-uno bootloader
69 questions
0
votes
1
answer
219
views
Questions about ATMega8A including burning my hex files
I wrote a small blink program for an ATMega8U-DIP I bought recently. The source is this,
#ifndef F_CPU
#define F_CPU 16000000
#endif
#include <avr/io.h>
#include <util/delay.h>
int main(...
- 121
4
votes
3
answers
621
views
How to compile without adding the bootloader?
I'm using a standalone atmega328p with a 16MHz crystal.
I'm programming it via avrdude on a raspberry pi, using the SPI and RESET pins.
When I compile my program, this is what I see at the end of the ...
- 223
1
vote
1
answer
103
views
Why Did I Have To Program Duemilanove Bootloader?
As a volunteer for Public Invention, I have developed an Atmega328 based design in which I thought I was largely duplicating the Arduino UNO.
Unlike the UNO, I did choose a CH340 USB to UART chip as ...
- 111
2
votes
1
answer
277
views
How does the compiler/assembler work wrt bootloader?
I realized that on the atmega boards the bootloader is programmed into the chip.
I'm curious, when compiling a sketch how does the compiler/assembler differ from compiling a standard C program for a ...
- 161
0
votes
2
answers
2k
views
Standalone ATMega328 - do I need to burn the bootloader?
I want to get an ATMega328 off of the Digi-Key, and use it like an Arduino (without requiring the whole Arduino board).
When it comes to programming, do I need to do anything special like burn the ...
- 111
1
vote
4
answers
6k
views
What does avrdude: Device signature = 0x000000 mean? Faulty wiring? Software issue? Incorrect tutorial?
I followed this tutorial a couple of times and when I clicked on bootloader I get this error:
avrdude: Device signature = 0x000000
To see the configuration file click here.
Why do I get this error (...
- 139
1
vote
1
answer
4k
views
Error while burning bootloader
I am trying to burn bootloader on Arduino UNO using MEGA2560 as the programmer,
I followed the steps stated here but still get the error below:
avrdude: Version 6.3-20190619
Copyright (c) ...
- 15
2
votes
1
answer
762
views
what happens on Arduino power-on, and how long does it all take?
Here's what I think happens and how long it takes (FIXME means I don't know). I'd like to end up with solid max times for everything if possible.
Power-on, input caps to the 328P begin charging and ...
- 121
0
votes
2
answers
767
views
Run HEX program from SD with another program
I want to write a program in which I can select a HEX file recorded on a SD card (via a LED screen, etc.) and run it, i.e. transfer control to it, like launching programs on a PC. Is this possible and ...
1
vote
1
answer
4k
views
Digispark ATtiny85 not recognized (bootloader problem)
I recently bought an ATtiny85 based development board. (picture below)
I managed to install it correctly following the official guides, without a problem.
Drivers are installed correctly, and I used ...
- 111
5
votes
2
answers
3k
views
Jumping to bootloader from application code in atmega328p
I'm trying to program an Arduino Uno (atmega328p) using only the serial Tx/Rx lines (no DTR, so no automatic reset). This is so I can upload code via WiFi/TCP using an ESP-01.
To achieve this, I need ...
- 63
1
vote
0
answers
100
views
Bootloader problem on Arduino Uno?
Since today, my Arduino Uno (using Arduino IDE version 1.8.13) lost the capacity to store a sketch upon physical disconnection (does not include button reset).
This means, the sketch works properly ...
- 47
0
votes
1
answer
712
views
Bootloader onto an ATmega328p (3.3V/8MHz), the dude won't finish his business
Hi and thank you reading my question !
I need for my projects to design as small as i can. Both the skills, and the hardware counts. So i can't use a DIP package for them, and i have gone for a TQFP ...
0
votes
1
answer
2k
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Burn bootloader finishes with "avrdude done. Thank you." but bootloader didn't actually get flashed
I've built a a stripped down version of the Arduino Nano that has some peripherals removed and three connectors for analog sensors I want to use. I'm trying to burn the Arduino Nano bootloader onto ...
- 103
0
votes
2
answers
619
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Bootloader difference between Atmel328p(through hole) and Atmel328p au(smd)
It’s been bugging me lot that Can’t we burn the same bootloader for both 328p and 328p au?
I got confused when I see this linksmd 328p au bootloader burn.
Will there be any impact on performance or ...
- 113