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Questions tagged [bootloader]

Refers to the code burned on the Arduino flash memory that runs every time the board is powered up. It starts the execution of user-loaded programs and allows uploading sketches from a PC through the USB connection. This tag should be used for questions about modifying, changing, uploading the default bootloader.

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Creating a product with arduino bootloader

If you have a prototype with arduino and you wish to create a real product can you do it or the fact that it contains the arduino bootloader prevents you? BTW, i dont have a product ready. I am ...
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2answers
615 views

Finding arduino bootloader version?

I have problem with WDT reset. After reset the device goes on for a boot loop. from the following link https://code.google.com/p/arduino/issues/detail?id=181 It has been mentioned that there is ...
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1answer
206 views

Micro not detected, can't reset

I just picked up a new Arduino Micro for a project, but the first time I tried to upload to it, things went terribly wrong. The USB cable was loose, so the power light kept blinking on and off. When I ...
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2answers
294 views

Improvement security in a domotic project

I recently started with a domotic project, I began creating a lock opening with a RFID currently I'm trying improving the code (I took from http://forum.arduino.cc/index.php?topic=256260) but I have ...
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1answer
158 views

Arduino not responding [duplicate]

I have been using my arduino uno for many months and it worked very well even till today morning but an hour ago I tried to upload a sketch and arduino IDE showed my this "avrdude: stk500_getsysc(): ...
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1answer
376 views

Uploading bootloader on ATmega328P SMT package using Arduino Uno

I have been trying to upload bootloader on ATmega328P SMT package on a custom PCB using Arduino Uno as ISP, I was quite successful. I have Googled a lot and have tried numerous ways, sometimes I was ...
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2answers
5k views

How do I write an Arduino program to an AVR chip without the Arduino bootloader?

Is it possible to write an Arduino program to an AVR chip that does not have teh Arduino bootloader installed? What is the process to do so?
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1answer
728 views

Is it advisable to reload Pro Mini with the bootloader originally designed for UNO to save 1.5 KB flash space?

In order to allow bigger user program size, is it possible and advisable to reload Pro Mini with the boot loader originally designed for UNO. This will save 1.5 KB flash space (UNO boot loader is 0....
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2answers
2k views

Why bootloader sizes differs from 0.5 to 8 kilo bytes for different boards?

According to official web info bootloader sizes are 0.5, 2 and 8 kilo bytes for UNO, Pro mini and ATMega2560. I believe all three boot loaders do similar job of receiving serial link data and write to ...
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1answer
2k views

How to free up Flash space by removing the bootloader on UNO?

In order to fit maximum user program into the chip, how to free up Flash space (0.5 kilo bytes for UNO, 2 KB pro Mini, 8KB for ATMega2560) by removing the bootloader on Atmega328 (UNO, Pro Mini, or ...
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3answers
9k views

I bought USB > FT232RL, can I use it to program a bootloader onto an Arduino?

I bought this thing off of eBay: eBay Link Will it allow me to program an ATmega[xxx] (Arduino clone) with a bootloader? --> If so, how would I go about it? What should I do, and what should I ...
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2answers
3k views

Problem loading sketch to Leonardo

Today I got Arduino Leonardo to replace my Uno. I've tried running one of sketches I use on the Uno, but with no luck. When I start the upload, RX LED on the Leonardo flashes few times, and after ...
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5answers
2k views

Mega 2560 Doesn't Respond

When trying to upload to my Mega r2, it simply times out during uploading. avrdude: stk500v2_ReceiveMessage(): timeout avrdude: stk500v2_getsync(): timeout communicating with programmer I tried ...
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4answers
2k views

What's wrong with my undetected, unresponsive Arduino Robot?

I was wondering if someone could try and solve a major problem I've been having with a brand new Arduino Robot (similar to an Arduino Leonardo). Any input would be very much appreciated! I've been ...
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4answers
9k views

Arduino Nano not responding with yellow led blinking fast

Update: I started playing with a genuine Deumilanove and exactly same problem happened to it - d13 led blinking, but avrdude says stk500_recv(): programmer is not responding I uploaded a largish ...
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1answer
297 views

Disable Boot Flash completely on ATMega

I want to reclaim the space reserved for the bootloader on my ATMega32u4 (Leonardo chip). But the lowest boot flash size I can see is BOOTSZ=11 which is 256 words (512 bytes). Is it not possible to ...
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1answer
7k views

How do I install the firmware on an Arduino Mega clone?

I have a brand new board which is a clone of the Mega2560. I need to install the USB firmware on the 16U2 and the bootloader on the 2650 chip. I have Atmel Studio and a JTAGICE-3. Using those, I can ...
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1answer
746 views

How does RXD/TXD request signal look betwen 16u2 and 328p on oscilloscope?

I have a broken Arduino Uno. The man tells that he connected power supply and USB at the same time. I got the new 16u2 (empty) chip. then asked my friend to re-solder it. He was using an air ...
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0answers
28 views

Weirdest behaviour with arduino and bootloaders for GPS [duplicate]

I have an EM408 GPS and an Arduino Duemilanove with an ATMega328. I have the following code to talk to the GPS and get raw data: #include <SoftwareSerial.h> SoftwareSerial GPS = SoftwareSerial(...
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2answers
5k views

bootloader uploading into Atmega328

Here is mine circuit. Intially i used arduino UNO directly for programming. Now i am Using atmega 328 IC for programming. I am trying to connect 32 hall sensor via Mux circut. I wanted to How to ...
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1answer
2k views

How to program an empty Mega2560 with an Arduino sketch?

I am writing code on Arduino mega. My current code is working fine. However, I'm not using all the pins. My question is: I have the hex file for my code and I can purchase a Mega2560 MCU. Is there ...
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1answer
1k views

Can I load programs through the RS232 pins?

Can I upload new programs onto a MEGA2560 through a serial port connected to pins 2&3? (through the correct RS232<->TTL level shifters) I know the 16U2 chip acts as a USB->serial converter ...
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1answer
1k views

Can I speed up the Leonardo bootloader?

Inspired by an example question before beta, can I make the Leonardo bootloader take less that 8 seconds to run? It is very slow and I want to speed it up somehow.
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0answers
84 views

is it possible to backup an uploaded program? [duplicate]

I have a cute robot built on Arduino Uno and Ardumoto, and I am trying to reverse engineer it first, and to add some new sensors afterwards. I am stuck at how to deal with its program. I don't have ...
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1answer
112 views

SeeedDuino/Grove and the story of not being able to upload programs

I am new to the arduino world and wanted to start playing with the micro controllers, I am a .NET developer by trade so not completely new to this kind of world. I purchased a seeedduino v3 and a ...
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1answer
242 views

Why doesn't the master branch BOSSA work on Arduino Due?

I have downloaded BOSSA for Linux, and have run bossash->scan. I have also tried erasing and resetting the board before scanning. It does not work. According to the Arduino website, the native USB ...
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2answers
1k views

Changing pins used in ArduinoISP example

I have built my own ATTiny programmer, but made a bit of a mistake along the way - I didn't align the headers properly, and now instead of them plugging into pins 10, 11, 12 and 13 as per the ...
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1answer
5k views

How to reduce serial speed on Arduino bootloader (optiboot) and on the IDE?

I'm debugging a couple of RS232-to-TTL converter boards that I'm trying to use to program my Arduinos and one thing I would like to try would be to reduce the upload serial speed from 115200 to 19200. ...
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2answers
22k views

Arduino Mega timeout communication with programmer error

I have an Arduino Mega 2560 and it was working fine until about lunch time when I started getting this error: avrdude: stk500v2_ReceiveMessage(): timeout avrdude: stk500v2_getsync(): timeout ...
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3answers
9k views

What alternatives are there to the Optiboot bootloader?

Nearly all modern Arduino boards use the Optiboot bootloader. Compared to the ATmegaboot used before, this is smaller in flash terms (by about 1.5KB) and faster in upload speed (115.2k vs 57.6k) and ...
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2answers
23k views

How do I burn the bootloader?

I was instructed to "burn the bootloader" to my Arduino to fix an error I was getting. How can I do this? (And what exactly is the bootloader?)
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2answers
3k views

Yún boot from SD card

I have an Arduino Yún, and it only has 16mb flash onboard for the Linux. I was wondering of it is possible to put a bootloader on the flash that uses the sd card as a rootfs? i want to be able to do ...