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This is not a sketch but a code fragment. Don't waste our time by posting fragments.
Right now the Arduino is simply a brick I don't know what the problem is.
Does that mean you cannot upload code anymore?
I already tried here to get help without success (more details):
Controlling Automower - Device Hacking - Arduino Forum
Don't start a new topic, you should have posted the code (the complete) in the original topic. And post the exact output you get from that sketch.
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In this case close this topic, I'll answer in the original topic.