Help understanding structure behaviior in esp now example

[J-M-L]

@horace

struct __attribute__((packed)) Data {
  int16_t seq;  // sequence number
  int32_t distance;
  float voltage;
  char text[50];
} data = { 0, 56, 3.14159, "hello test" };  // sample data

this is flat in memory (consecutive bytes) so there is no problem
the issue is when you have a non trivial data type with the actual values not being stored in the same place.
Sending such structures requires serialising and unserializing the data