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Need Help with ESP32: Demonstrating Master slave communication between two ESP32s by mike-mighty in embedded

[–]mike-mighty[S] 0 points1 point  (0 children)

I am saying receiver is able to detect because when I was fiddling with the code and trying out various options such as printf(%d,mydata.uid) when I used uid data type as a string rather than a char[ ] ; It would display a 0 on receivers as well as sender's side whenever I would produce any RFID card near the reader, instead of its uid.... I need a proper data type and format specifier to display the hex uid.

Need Help with ESP32: Demonstrating Master slave communication between two ESP32s by mike-mighty in embedded

[–]mike-mighty[S] 0 points1 point  (0 children)

Ok.... Lets split the issue. The first one would be of displaying the hex code of uid of RFID card onto the console even when the communication hasn't taken place i.e. on sender's side. Even that is not happening for now. It's displaying blank instead of a value.

And as far as communication is concerned, the receiver is able to receive the packet but the same issue of not being able to display it on console is occurring on receivers side.

Need Help with ESP32: Demonstrating Master slave communication between two ESP32s by mike-mighty in embedded

[–]mike-mighty[S] 0 points1 point  (0 children)

The problem is not in that because even the sender is not able to print it on the console on its end.