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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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Adafruit Feather M0 Basic update bootloader

I bought a Feather M0 Basic from a reseller Lawicel however I'm missing the UF2 boot feature. When I press the reset button two times I just get a serial and have to program circuitpython using Bossa....
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47 views

nodemcu esp8266 does not boot up when 5V pin is connected as a VIN source

Whenever I boot up the esp8266 or flash code via usb ,I have to remove vin pin otherwise it does not boot up. If I remove vin pin then flash and boot up happens and then i am able connect vin with 5 ...
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28 views

Setting Fuse Bits From Arduino IDE?

I've come to understand fuse bits in the last few weeks. I'm working on a bitbanging project on an Arduino Pro Micro, and the signals I'm working with are around 30uS each. For this reason, I think I'...
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2answers
64 views

32u4 using internal clock on custom PCB - loading sketch

I have a custom PCB with a 32u4 running fine with an 8MHz external oscillator. I burned the bootloader and loaded my sketch with an UNO using Arduino as ISP. I have no USB on my PCB nor do I need ...
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3answers
72 views

How can I get my (Arduino) Pro Micro schematic to allow me to program it through GPIO instead of USB

I'm trying this project so far I've got the schematic of a Pro Micro, which is powered through GPIO from a Raspberry Pi Zero, and want to remove the micro usb connection and able to flash it using an ...
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1answer
33 views

Problem with Arduuino to breadboard Mega8

I am trying to make an arduino using mega8 mcu. After so much struggling with sync/response/signature problems and reading the previous questions, finally managed to do it (almost). However I still ...
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2answers
64 views

How to burn bootloader into arduino uno without using another arduino

I need to bootload my Uno board but I do not have another Arduino at my disposal so how do I bootload without another Arduino board
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1answer
44 views

Arduino Pro Micro bricked?

I have a Pro Micro board at which tried to upload a sketch with sparkfun's Pro Micro 3.3v processor selected. After the upload completed successfully the board did not run again and is not even ...
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1answer
40 views

using esp8266 feather to burn bootloader on redboard

Is it possible to burn the bootloader of an arduino redboard using an esp8266 feather? whenever i connect my redboard to my pc the ports list on the ide would just be greyed out. I've looked around ...
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1answer
89 views

Standalone 328P Arduino

I am creating a standalone Arduino using Atmega328P. The circuit is below. However, I'm seeing avrdude: Device signature = 0x000000 error whenever I try to burn the Arduino Uno bootloader. I'm ...
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3answers
229 views

Atmega328p - Going low power 1.8V using 4Mhz oscillator - Bootloader flash

I would like to use an Atmega328p micro-controller with a 4 Mhz oscillator in order get some low power consumptions. I am using an Arduino board to flash the bootloader into the Atmega. EDIT In ...
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3answers
377 views

Can't burn Bootloader on Atmega328P Using Arduino Uno

I'm trying to create an Arduino Uno following the circuit described in the diagram below which I'd based from here. I'd tried this circuit on an Atmega328 PDIP version (with the correct connections ...
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2answers
234 views

Can't upload to arduino boards anymore

I have been working on several projects recently an made hundreds of uploads to several different boards. I haven't had any issues to speak of. Now I cannot upload. I have tried: Disconnect all ...
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1answer
176 views

Atmel atmega32u4 not recognized when connected by usb after attempting to flash new bootloader

I am making a mechanical keyboard using Atmel's pro micro as the controller. I decided I would try to replace it's bootloader, as the one it ships with doesn't seem compatible with QMK's RESET ...
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1answer
380 views

Avrdude verification error

I use an Arduino UNO with IDE 1.8.5 and for the last few days it doesn't let me upload any code. When I try, it pops up with the following error: avrdude: verification error, first mismatch at byte ...
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1answer
168 views

add ID number to the feather m0 bootloader (flash)

I'm trying to add a serial number to the bootloader's flash area of Adafruit Feather m0 board. Seems like feather m0 0-0x2000 area on the flash is non writable by the arduino sketch. i wanted to add a ...
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1answer
110 views

Compiling with -flto and -nostartfiles results in no program at all

Towards developing my own bootloader I've stumbled over an issue with avr-gcc. I am trying to compile my code with the compiler flags -flto #to enable link time optimization -nostartfiles #...
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2answers
66 views

Fio Keyboard program out of control, how to reset?

My question involves a Sparkfun Fio v3, similar to the Arduino Fio. I had a student who was testing his understanding of the Keyboard library. He uploaded a sketch that continuously sends output, ...
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1answer
5k views

Arduino Nano ATmega328P bootloader difference

There are two ATmega328P bootloaders, old and current. What is the difference between these bootloaders? I'm aware that Nanos sold by Arduino use the new bootloaders but I haven't been able to find ...
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1answer
261 views

Use ESP8266 GPIOs after Flash Startup

I'm a bit confused about the ESP8266 launching and GPIO behaviour. When I'm programming the ESP8266 I have to set GPIO2 high and GPIO0 low. But when I want to use the ESP8266 in my project I have to ...
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0answers
44 views

Set up mesh network with RF Transceivers

I would like to set up a mesh network of Arduinos with the following features/capabilities: No master node Arduinos capable of bootloading other Arduinos through RFs Capable of communicating over TCP/...
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1answer
61 views

Problem in bootloading 328p using Arduino as ISP. Please help me in figuring out the problem.I have uploaded the verbose below

Arduino: 1.8.3 (Windows 10), Board: "Arduino/Genuino Uno" C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -...
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216 views

failure to burn bootloader in ATMEGA328P on breadboard

As a novice to ATMEGA I try to use the arduino UNO (original) to burn a bootloader in a new ATMEGA328P on a breadboard. It is clear to me that SPI is used for this task and all connections have been ...
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1answer
99 views

Problem uploading to ATMega using ArduinoIDE (“unbricking” “bricked” microcontroller?)

I've a SparkFun Pro Micro which is an Arduino Leonardo clone. Unfortunately my attempts to upload programs failed. I did some research in the internet and found you have to use SparkFun's ...
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2answers
417 views

Using Due (SAM3X8E) native USB port for programming?

I would like to make my own version of the Arduino Due. What I can't find the answer to is; Can I program a blank SAM3X8E using the native USB port from within the Arduino IDE, or do I first need to ...
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1answer
1k views

arduino leonardo avrdude: butterfly_recv(): programmer is not responding

I am having issues uploading new code to an Arduino Leonardo board. This happens after uploading a previous buggy code (e.g. array out of range indexing error). Once I fixed the buggy code, I can ...
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1answer
114 views

Burn hex with optiLoader

Can optiLoader be used to burn custom hex? For example, there's hex representation stored in optiLoader.ino in image_328, if that value is replaced with content of my pre-compiled hex, should that ...
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1answer
55 views

Missing arduino bootloader problem?

I have a arduino clone that is not being assigned a /dev/tty by Debian Stretch (Stable). It does have the ch340g chip. I have tried the driver from the manufactures site with no joy. Would the lack ...
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0answers
93 views

Installing Optiboot loader for pro mini 3.3V 8MHz

I have tried to install a better bootloader in some chinese Arduino pro mini boards. I have tried the OptiLoader application via an ArduinoAsISP. I failed in some way. The boards got unstable, I can ...
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2answers
277 views

ATtiny85 serial communication, bootloader and setting up fuses

I have been reading some articles about ATtiny and how to burn the bootloader. And I have two questions which I can't figure out. Do I need to manually setup fuses to run 8 MHz on my ATtiny when I'm ...
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2answers
1k views

ino.hex vs ino.with_bootloader.hex

I'm working on a Android App able to update the content of my Arduinos. Start to work (reset the Arduino, communicate with STK500 protocol, get id of ATmega and so on). But I face a question about the ...
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1answer
192 views

How to create custom bootloader with accompanying program loader for ATMega2560

Just for some context, I have created a custom board based on the ATMega2560. I currently have the original Arduino Bootloader for the ATMega2560 and have no problems uploading code via the USB Port ...
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1answer
131 views

Arduino Burn the code programmatically

Is it possible to burn arduino code programmatically? I was thinking of one way and that is to download hex file from my online server. Store contents of the hex file in a string, and write that ...
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55 views

ISSUE with USING WINUSB Driver & Arduino AS USB &LUFA/ CATERINA boatloader

Project Goal: Create a custom USBDevice. Name of device : "CapiaZ" Board used: Arduino MICRO summary: I was able to modify the Caterina boatloader for my CapiaZ board, to have a specific VID & ...
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215 views

Will avrdude overwrite the bootloader on my Nano?

I bought an arduino nano (knockoff from Elegoo) and according to the Amazon description it comes with a bootloader. From what I've read, this means that programming can occur over the usb connection ...
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2answers
106 views

Burn bootloader to Arduino Uno using ARM-USB-OCD

I have ARM-USB-OCD created by OLIMEX. I am interested in can I use this to burn a bootloader to Arduino Uno. As I know Atmega 328P can be programmed using JTAG protocol which has also ARM-USB-ODC, so ...
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1answer
137 views

Purpose of USB (FTDI) and ICSP connectors

As an Arduino newbie I am a little bit confused about possible ways of programming and communicating with this device. I have done some research and it seems that: ICSP is used for programming with a ...
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2answers
1k views

ATTiny85 Digispark clones failing USB handshake - how to program them?

I've recently bought a batch of ATTiny85 modules (Digispark clones) from China, and tried to write a first test program into them now. I noticed that they do seem to have some bootloader already ...
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187 views

Is my Arduino Micro bricked?

A few weeks ago I built my own Arduino Micro. Everything worked fine and it connects every time. I have built a second one, with the exact same processor schematic as the first one. It turns on, and I ...
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60 views

Bootloader fails when two Arduinos are connected over serial port

I’d like to connect two Arduinos over serial port so that they can communicate with each other. Initially, I put all necessary code onto one device and now connected another via serial port. As soon ...
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1answer
112 views

Getting boot mode 1.6 error

When I try to upload my script I get this in my serial monitor: ets Jan 8 2013,rst cause:4, boot mode:(1,6) wdt reset The board I am using is Uno + Wifi And this is my sketch: /* * Arduino ...
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2answers
367 views

Error when trying flash bootloader into Arduino Pro Mini 328P 8MHz 3.3V

I tried flash bootloader into Arduino Pro Mini 328P 8MHz/3.3V clone, but got error. First I did test: ~$ avrdude -c usbasp -p m328p avrdude: AVR device initialized and ready to accept instructions ...
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56 views

Bootloader atmel328P-PU Arduino

I have been trying to bootload a fresh ATmel328P-PU micro-controller with Arduino but it keeps on failing, giving this error: avrdude: Device signature = 0xff00ff avrdude: Expected signature for ...
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1answer
161 views

Running Atmega1284P at 3.3 and 8Mhz

can i run Atmega1284P at 3.3V and 8Mhz speed.? can i burn Nick Gammon Arduino bootloaders into the chip.? Thank You
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277 views

Leonardo clone being recognized by Windows as a broken Linino One - wtf?

I'm running a Velleman VMA103, which is advertised as a clone of the Leonardo. Both use the 32u4 chip, and the pinout is exactly the same. However, when I plug it in, the drivers do something weird. ...
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136 views

How do I know the size of the bootloader of ATtiny? Is it the same as ATMega328P?

I burned the bootloader in ATtiny45 with the Arduino tool. I want to know how much memory it has taken. Is this bootloader the same code of a bootloader used in the 328P or other chips? Can I see ...
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271 views

Burn Bootloader to Chinese Arduino 2560 with AVR ISP programmer

I got my hands on one of these ISP programmer for Atmel AVR microcontroller in USB stick design: Then I selected Progammer > AVR ISP and clicked on Burn Bootloader but it says stk500_recv(): ...
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38 views

COM port problem when uploading bootloader to SAMD21G

I use an ATSAMD21E16B-AU in my circuit and I want to upload the bootloader with the SAM-BA flash programming tool in this official link: http://www.atmel.com/Images/Atmel-42366-SAM-BA-Bootloader-for-...
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473 views

Cannot upload sketches, and loopback test fails, but bootloader is intact and correct

I was using an Arduino Uno for a project, when suddenly it stopped allowing me to upload sketches. I kept getting the error message: avrdude: stk500_recv(): programmer is not responding avrdude: ...
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97 views

How is interaction with CDC device with no interface endpoints working?

I'm working on uploading to Digispark board. It uses micronucleus bootloader and i can see uploader code. I've modified it a bit to see interfaces and endpoints count: nucleus->device = ...