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First release on github.
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‎README.md‎

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# chip45boot3
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AVR ATmega Xmega Bootloader and PC GUI Source Code.
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chip45boot3 was previously offered commercially by chip45.com and is now available as open-source under MIT License.
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## Description
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chip45boot3 is the successor of the popular chip45boot2 bootloader targeting professional applications with extended functionality. It supports almost any Atmel/Microchip AVR ATmega and Xmega microcontrollers. See [infosheet](docs/chip45boot3_Infosheet.pdf) for details.
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## Features
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chip45boot2 provides the following features:
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- faster transmission protocol
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- strong 16 bit CRC checksum
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- optional 128 bit XTAE encryption of data
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- programing and reading of flash and eeprom memory (including verification of programmed content)
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- bootloader can read out firmware version from flash and GUI warns, if an older version should be programmed
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- communication through USART (e.g. RS232, USB UART converter, optionally RS485)
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- support of the internal USB controller of the recent Xmega microcontrollers!
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- written in C with Atmel Studio 6.1
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- memory footprint highly configurable (e.g. ATmega/USART/just flash programming <2k, full functionality <4k, with USB controller <8k)
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- GUI written with Visual C# (2010 Express), full source code included
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- separate PC tool for encryption of hex files, full source code included
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## Overview
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The chip45boot3 bootloader is a highly customizeable bootloader for all ATmega and Xmega devices with bootloader support (i.e. separate bootblock in flash and boot reset vector).
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A fast binary protocol with strong 16 bit CRC checksum ensures a reliable communication with a host PC. Flash and EEPROM memory of the target can be written or read out and the written content is verified against the original data.
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The bootloader can read out a firmware version from the exisiting flash memory and compare it against the version of the new firmware hexfile. A warning is shown, if an older version should be programmed.
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Communication is performed through any UART of the target device with a host PC (e.g. USB UART converter, RS232, RS485). Other microcontroller interfaces can be adopted relatively easy due to the very modular design of
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the bootloader.
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Application firmware content can be XTAE encrypted optionally making it impossible for attackers to reverse engineer the firmware.
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Memory footprint starts at below 2k for small ATmega devices with just flash programming support.
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The bootloader is written in C with Atmel Studio 7 and the Windows PC GUI is written with Visual C# Express. Full source code is included of bootloader, PC GUI as well as an PC encryption tool for XTEA encryption of hex files.
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## Further Information
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- [chip45boot3 Infosheet](docs/chip45boot2_Infosheet.pdf)
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## PC Software
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The chip45boot3 GUI is a PC/Windows application with a graphical user interface for the bootloader, which simplifies flash and eeprom programming over a COM port.
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![chip45boot2 PC GUI](img/chip45boot3_gui_simple.jpg)
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![chip45boot2 PC GUI](img/chip45boot3_gui_expert.jpg)
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You can download Windows binaries under [releases](https://github.com/eriklins/chip45boot3/releases).
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The PC software was programmed with Visual Studio C#.
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## Contributing/Feedback
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Feedback / improvements / pull-requests / etc. are welcome.
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However, I decided to open-source the bootloader due to lack of time/resources available for supporting the bootloader anymore, hence I cannot guarantee working on issues/pull-requests in the short-term.
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## License
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Copyright (C) 2023 Erik Lins
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This project is released under the MIT License.

‎chip45boot3_target_code/ATmega_Example.componentinfo.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<Store xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="AtmelPackComponentManagement">
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<ProjectComponents>
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<ProjectComponent z:Id="i1" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/">
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<CApiVersion></CApiVersion>
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<CBundle></CBundle>
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<CClass>Device</CClass>
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<CGroup>Startup</CGroup>
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<CSub></CSub>
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<CVariant></CVariant>
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<CVendor>Atmel</CVendor>
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<CVersion>1.3.0</CVersion>
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<DefaultRepoPath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs</DefaultRepoPath>
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<DependentComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" />
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<Description></Description>
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<Files xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
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<d4p1:anyType i:type="FileInfo">
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<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.3.300\include</AbsolutePath>
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<Attribute></Attribute>
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<Category>include</Category>
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<Condition>C</Condition>
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<FileContentHash i:nil="true" />
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<FileVersion></FileVersion>
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<Name>include</Name>
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<SelectString></SelectString>
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<SourcePath></SourcePath>
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</d4p1:anyType>
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<d4p1:anyType i:type="FileInfo">
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<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.3.300\include\avr\iom2560.h</AbsolutePath>
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<Attribute></Attribute>
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<Category>header</Category>
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<Condition>C</Condition>
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<FileContentHash>MkwPezikXVtYA90mpLpFfA==</FileContentHash>
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<FileVersion></FileVersion>
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<Name>include/avr/iom2560.h</Name>
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<SelectString></SelectString>
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<SourcePath></SourcePath>
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</d4p1:anyType>
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<d4p1:anyType i:type="FileInfo">
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<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.3.300\templates\main.c</AbsolutePath>
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<Attribute>template</Attribute>
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<Category>source</Category>
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<Condition>C Exe</Condition>
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<FileContentHash>GD1k8YYhulqRs6FD1B2Hog==</FileContentHash>
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<FileVersion></FileVersion>
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<Name>templates/main.c</Name>
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<SelectString>Main file (.c)</SelectString>
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<SourcePath></SourcePath>
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</d4p1:anyType>
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<d4p1:anyType i:type="FileInfo">
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<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.3.300\templates\main.cpp</AbsolutePath>
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<Attribute>template</Attribute>
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<Category>source</Category>
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<Condition>C Exe</Condition>
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<FileContentHash>YXFphlh0CtZJU+ebktABgQ==</FileContentHash>
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<FileVersion></FileVersion>
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<Name>templates/main.cpp</Name>
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<SelectString>Main file (.cpp)</SelectString>
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<SourcePath></SourcePath>
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</d4p1:anyType>
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<d4p1:anyType i:type="FileInfo">
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<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.3.300\gcc\dev\atmega2560</AbsolutePath>
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<Attribute></Attribute>
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<Category>libraryPrefix</Category>
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<Condition>GCC</Condition>
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<FileContentHash i:nil="true" />
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<FileVersion></FileVersion>
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<Name>gcc/dev/atmega2560</Name>
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<SelectString></SelectString>
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<SourcePath></SourcePath>
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</d4p1:anyType>
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</Files>
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<PackName>ATmega_DFP</PackName>
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<PackPath>C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.3.300/Atmel.ATmega_DFP.pdsc</PackPath>
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<PackVersion>1.3.300</PackVersion>
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<PresentInProject>true</PresentInProject>
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<ReferenceConditionId>ATmega2560</ReferenceConditionId>
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<RteComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
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<d4p1:string></d4p1:string>
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</RteComponents>
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<Status>Resolved</Status>
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<VersionMode>Fixed</VersionMode>
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<IsComponentInAtProject>true</IsComponentInAtProject>
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</ProjectComponent>
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</ProjectComponents>
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</Store>

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