![]() ![]() At least for me, so I share my experience, just in case someone have similar problem. Obviously, the fact that this post appeared means, I was successful. I am not a big fan of Arduino, but I have few Digispark boards, so I decided to give it a try. Luckily for me, there is simple Arduino library, that bit-bangs the protocol. Unfortunately, I did not have any device that was confirmed successful and I did not want to experiment with low chance of success. It is however similar enough to SPI that some people were successful in talking to these EEPROMs on SPI bus. This means that flashrom is not an option here. In the meantime, I found that this thing talks Microwire protocol, which is quite similar, but not identical to SPI. So, to not break anything, I bought few similar memory chips from usual source. Fortunately I learned that chip it is connected to expect EEPROM from the 93C圆 series. It is quite obscure, as Google did not return anything useful (beside Taobao auctions). What I had to do, was to read contents of EEPROM, that I found on board, I am analyzing. For now I want to present a tool that I made while working on this big thing (as a side note, it’s not the first one, cc-factory was also created for that purpose). Of course this would be something almost unique, if finished. I hope, I will be able to present something on that in future. ![]() For some time already, I am working on a big reverse engineering topic.
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