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I am wondering if anyone has ever flashed a ATMEGA2560 utilizing a WIZnet 5500? I have looked at this bootloader package but it only supports the 5100. I may have to do it myself but am a little worried as there doesn't seem to be any support/documentation online and I am not the best programmer. Any help would be greatly appreciated.

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The latest Ariadne bootloader from 'codebender' is in his 'personal' GitHub repository. It has W5500 support. Per created his fork with better documentation and a hardware package earlier. The loathingKernel's repo still lacks good documentation.

I installed Per's Ariadne package over Board Manager and then I replaced the files in Per's package with files from loathingKernel's repo. The I flashed the bootloader to Mega without problems and the Ariadne bootloader worked for me over W5500.

I configured the upload from IDE too.

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  • i trying to do same, but use arduino nano + wiznet5500 board. Default configuration with tftp server on 192.168.1.128 is started, but not responing for my tftp client. And I suspect 7KB of memory for the Ariadne bootloader and 26KB for the main firmware will overflow flash-memory microcontroller memory, since there is only 30KB. I'll try Mega, like you – hwak May 17 at 16:02
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    @hwak, did you reset to bootloader. for Mega there is a better library now github.com/jandrassy/ArduinoOTA – Juraj May 17 at 16:31
  • thank you. It’s a pity that Mega is very large. I would like something smaller so that it fits into standard electrical sealed boxes 100х100 millimeters – hwak May 17 at 18:33
  • @hwak, Nano Every is good, but it has no OTA solution yet. I plan to try to make one over SD card and SD bootloader. but I have too many Arduino plans and not enough free time for it. – Juraj May 17 at 18:39

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