arduino - Can I download code source from board? -

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I uploaded the source code on the Arduino mega board using the sketch. After that, I modified the original code. And later I needed the original code which was not modified for the second board, but I did not return it.

Is there any way I can download source code from a previously uploaded board? Or is it possible to dump the original code from the board to another?

I have heard that there may be a way to use the ISP but I am not sure. First, note that source code is never uploaded, only compiled and linked binary. . This reduces the usefulness of the results of the download.

Uses Arduino IDE avrdude to upload compiled code to the board. The exact options that use this depend on the specific board that has been selected. If you have another identical board, you enable "Show Verbose Output during Upload" preference to see if the command line is used for avrdude; Once you have that you can replace "::::" with the ": w:" and the file name that immediately afterwards. Walking on the command line (using the correct path for avvdude executable) you will be allowed to download compiled code from the board.

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