For example, I define a macro in my code, #define TX_MAILBOX_IDX 1 -> that means selected address offset?
If that is true, my address offset is 0090? or 0090 - 0080?
I ask this because, in my code sample, I was changing the message buffer index value(RX or TX, RX and TX) anything changed. I use an 8-byte payload.
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