Help understanding structure behaviior in esp now example

Projects Programming
12

in ESP-NOW test I used a structure

uint8_t broadcastAddress[] = {0x24,0x62,0xAB,0xE0,0x64,0x54}; //{ 0x84, 0xCC, 0xA8, 0x7A, 0x56, 0x6C };  //{0x24,0x62,0xAB,0xE0,0x64,0x54};

esp_now_peer_info_t peerInfo;

// test structure
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

which was transmitted using

  esp_now_send(broadcastAddress, (uint8_t *)&data, sizeof(data));