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I followed the guide from the following ST's video: https://www.youtube.com/watch?v=PsiFDHH87vo&t=407s In the guide, the A7 core is initiating the communication. I have been playing with the code to make M4 the one to initiate the communication, but ...
I am following the instructions of a video on ST's official Youtube page:https://www.youtube.com/watch?v=I9KDN1o6924picture: https://imgur.com/a/bN5oR3p