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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38 views

What killed my Arduino nano?

Yesterday evening everything worked well. Today morning I am trying to upload sketch to the Arduino (nano china, CH340) and get the following: Writing | avrdude: stk500_paged_write(): (a) protocol ...
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2k views

Can we burn Arduino bootloader into any microcontroller chip?

I am new to this Arduino community I noticed on youtube that while the prototype is complete people purchase new ATmega328p chips and flash bootloaders into them using in-system-programmers so that ...
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154 views

Usbasp Arduino Uno Bootloader Flash Error - Win 10

I'm trying to flash an Arduino Uno using usbasp but i'm getting the following error,I have checked all the connection and voltage using multimeter but still this error: Arduino: 1.8.8 (Windows 10), ...
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1answer
38 views

Bootloader vs. Programmer [closed]

I have just started using Arduino boards and I am not sure what the programmers are. I read that you can use a bootloader or a programmer to run your code on an Arduino board. I also read that running ...
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1answer
126 views

Error while reburning bootloader to atmega328p by usbasp in Arduino IDE

I have got the Bootloaded ATMega328P-PU from China and I want to reburn new bootloader into it. For this I use UsbAsp programmer. I want to do it in Arduino IDE. But when I try to flash, for example, ...
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19 views

Atmega168A won't be programmed via USB (Minicore) [duplicate]

I have designed a custom board based on a Atmega168A and a MCP2221 for the USB bridge. I successfully programmed the Atmega168A with an Arduino as ICSP with the following sketch (Minicore Atmega core):...
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3answers
3k 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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21 views

Programming Pro Micro over ISP, but keep bootloader [duplicate]

I want to program a Pro Micro over ISP from a hex file using avrdude, but I also want to have the bootloader after it is programmed so that I can program it over USB. Is this possible?
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2answers
57 views

Will bootloader communicate via TX0 / RX0

I'm fairly new to Arduino programming but have a good deal of experience with low-level programming early processors, having originally cut my teeth on Z80, 8088, etc. I'm looking at developing a ...
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2answers
47 views

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 ...
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1answer
32 views

Cannot write lock byte on Arduino Pro Micro

I have an Arduino Pro Micro, with atmega32u4 chip and a caterine bootloader. However, every time I (successfully) flash some program over the USB port, the /dev/ttyACM0 device disappears, and I cannot ...
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2answers
59 views

Is there some hardware that can be used to upload sketch source code via USB flash disk (Automatically By plugging it in)

Well am asking this basically to know if it is possible to create a bootable flash drive that automatically uploads any source code onto the arduino just like creating a bootable flash drive when ...
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21 views

How can I upload an arduino sketch by using a bootable flash drive plugged in [duplicate]

The only reason as to why I am thinking about this is that I want to improve on the level of customization that an embedded product can have? so Here I am asking whether it would be possible to ...
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1answer
91 views

How do I set up an ATTiny861A-PU for flashing with Arduino Uno?

I have found instructions for 8 pin Tiny but none for my 20 pin. How do I set this chip up on the breadboard for bootloading with Arduino?
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21 views

avrdude: stk500_recv(): programmer is not responding, bootloader problem [duplicate]

Yet another question with this title. I just bought an Arduino Uno R3, as part of a ARDX kit. When trying to upload the first sketch, I get this error message: avrdude: stk500_recv(): programmer is ...
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1answer
34 views

How to burn bootloader and upload sketches on custom arduino?

Ive turned a project I breadboarded with arduino and other modules into one pcb on EAGLE. The pcb includes the ATMEGA328p smt version that doesn't have the bootloader installed. My question is then ...
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48 views

ATMEGA32u4 Arduino Bootloader Issues

I've been struggling with this issue for a few days on and off now.  I made a custom PCB (schematic) for a smaller Arduino Pro Micro and it works - mostly.  The only issue I had was that the pins on ...
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1answer
87 views

No Data Received on Serial Port & Unable to DFU Reset. Advice?

Having a problem running my original code that I tested last week, which worked on multiple days last week. I tried to do a DFU reset and update the BootLoader, but it didn't work. I checked the ...
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1answer
3k 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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2answers
266 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
1k 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
51 views

Atmega328p Uploads via ISP but not bootloader

I'm trying to upload a bootloader to my atmega328p on a custom pcb containing external oscillator at 16MHz. It is possible to upload program via ICSP pins using Arduino as ISP (Official Arduino Uno) ...
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52 views

Cannot flash Arduino Bootloader on SAMD21G with STLink via SWD programming and openOCD

I'm trying to flash the Arduino Bootloader on a bare ATSAMD21G with STLink via SWD programming and OpenOCD. These are the steps that I took: Create *.hex file to flash with ArduinoCore-samd ...
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95 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
616 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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2answers
1k views

How Bootload an Lilypad Arduino USB using Arduino UNO

I recently bought two lilypads USB, one works perfectly (it's recognized in my computer, but the other one it's never recognized, I even try in different computers and the same scenario with both ...
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44 views

Problem burning bootloader to ATmega chip using nano/uno

I designed a custom PCB that has the chip, an oscillatorm, decoupling capacitors, and all other connections for the ATmega along with the rest of my circuit. I followed all steps in the tutorial for ...
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0answers
48 views

How to burn a bootloader to non-bootloaded(clean crystal) ATMEGA328P-PU with USBASP programmer via Avrdudess?

I'm trying to burn bootloader to my clean crystals, atmega328p-pu.For this I use the 16MHZ crystal with two ceramic capacitors and USBASP programmer, on Windows 10 Pro. As program for burning I tried: ...
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1answer
79 views

Can't use Arduino nano as ISP because it can't read the Device signature

I programmed the 8mhz internal oscillator Bootloader to a new Arduino Nano with another Arduino nano running the ISP Sketch, wich worked fine the first time(Arduino as ISP selected as programmer). (I ...
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1answer
168 views

Nano 33 IoT rescue from the dead: No USB. No upload mode

First of all: my board used to work fine. Now my Nano 33 IoT turns ON (green light) when connected to USB on Mac but: doesn't enter in upload mode after pressing twice on board button. doesn't shows ...
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3answers
23k 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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1answer
149 views

AVR-GCC can't call function located on fixed address

I wrote the following code: #include <avr/io.h> __attribute__((noinline, section(".app_start"))) void app_start() //app_start section starts at 0xFA0 { //register_packet_dispatch(...
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1answer
55 views

Is it possible to load both the arduino bootloader and a sketch onto an atmega328p via icsp?

i am familiar with uploading an arduino bootloader onto an atmega328p using another arduino via the arduino IDE. i have also installed software 'sketches' using that process which i believe leaves out ...
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1answer
178 views

Arduino IDE can't program my Arduino Pro Micro

I have a lot of Arduino Pro Micros that I can't program through the Arduino IDE. I'm on Windows. I'm using the SparkFun Pro Micro board information downloaded from SparkFun's website. I've tried ...
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0answers
25 views

Custom bootloader for battery level indicator

For a project I need to be able to read the battery level of the device regardless of the sketch currently running. For this I plan on adding a custom routine in the Arduino bootloader that reads the ...
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1answer
77 views

Is changing values in boards.txt and choosing Burn Bootloader enough to write fuses?

I am using Arduino IDE to program ATtiny84A connected to an Arduino Uno and Programmer set to Arduino as ISP. I would like to modify low and high fuse bits for ATtiny84A. As far I do not understand ...
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0answers
76 views

Nick Gammon Atmega bootload uploader, Why 5v is required instead of 3.3v?

I am trying to upload boot-loader to AtMega328p SMD chip. I want it to work with internal 8Mhz clock and 3.3v as VCC. By referring Nick Gammon's forum I have wired the connection but given VCC as 3.3v ...
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5answers
8k views

Why do I get avrdude: stk500v2_ReceiveMessage(): timeout error when uploading to Arduino Mega?

I have an Arduino Mega clone and I haven't used it for a while. I remember it not working so when I plugged it in and tried uploading the code to it and sure enough it didn't work. So I plugged in an ...
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0answers
48 views

Bootloader and AtmelStudio

I am having issues getting the main program to run after flashing via BOSSA with a bootloader. Jump to the bottom for my question and TL;DR. Here is my current situation: UF2 bootloader successfully ...
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0answers
39 views

AVR program upload overrides unrelated program area

I develope a new bus system (uartbus) which includes a host application that can handle new program uploads throught the bus. How it's work in short: The host application flashed to the AVR. This ...
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1answer
2k views

avrdude/stk500 protocol error

I'm running into a bizarre problem. I've got a custom board using an Atmega328P, running off the internal oscillator. From Atmel studio, I've successfully uploaded the standard optiboot bootloader (...
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2answers
147 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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4answers
5k views

Confusion with ATmega328P and 3.3V/8MHz

Firstly, I have tried to set the bootloader to be 8MHz internal oscillator. I have tried the board setup from here - https://github.com/oshlab/Breadboard-Arduino. And also the breadboard-1-6-x.zip ...
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2answers
170 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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0answers
122 views

Program uploads, but outputs flash reading error?

I'm new to Arduino, and I recently got 3 off-brand Nanos, and soldered pins for all three. Initially, none worked (I always received avrdude's errors when uploading). Based on my research, I ...
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1answer
56 views

Unable to burn bootloader with avrisp

I want to burn the arduino optiboot_atmega328.hex bootloader but it doesn't work. I remember that I was able to burn the BL using the arduino IDE which was quite easy, this time I'm having some ...
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0answers
107 views

Arduino not responding while trying to flash over BLE

I'm working on wireless uploader for Arduino from iOS devices. I'm using HM-10 BLE module which seems to work ok. PIO 2 is used as DTR for resetting (see A [0x41] T [0x54] + [0x2B] P [0x50] I [0x49] O ...
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0answers
46 views

Adding bootloader to Feather M0 Bluefruit LE

I want to make a custom Feather M0 Bluefruit LE. I know this means that I will have to add a bootloader to the ATSAMD21G18. I have seen that there are many useful articles in relation to adding ...
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0answers
252 views

How to enable auto reset in Arduino Leonardo?

I am trying to program an ATMega32u4 microcontroller through arduino IDE. I have added external oscillator(16Mhz) and capacitors and few other connections according to the Schematic. I had put a ...
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0answers
39 views

Error burning bootloader

I am trying to burn the bootloader of my cnc xpro controller board (ATmega328pb) using an arduino due as a programmer. I keep getting this error: Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), ...

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