/*
Struct Opções utilizando: define
Autor: Eng. Fabrício Ribeiro
19/05/2025

Byte MHDR

|      Mtype      |       RFU       |   Versão  |
|  7  |  6  |  5  |  4  |  3  |  2  |  1  |  0  |

*/

//Mtype
#define Join_Request 0
#define Join_Accept 1
#define Unconfirmed_Data_Up 2
#define Unconfirmed_Data_Down 3
#define Confirmed_Data_Up 4
#define Confirmed_Data_Down 5
#define Rejoin_Request 6
#define Proprietary 7

//RFU
#define Teste0 0
#define Teste1 1
#define Teste2 2
#define Teste3 3
#define Teste4 4
#define Teste5 5
#define Teste6 6
#define Teste7 7

//Versão
#define Version_0 0
#define Version_1 1
#define Version_2 2
#define Version_3 3

//Struct de 1 byte
struct _MHDR{
  byte Mtype:3; //3bit
  byte RFU:3; //3bit
  byte Version:2; //2bit
};

void setup(){

  Serial.begin(115200);

  _MHDR MHDR;

  MHDR.Mtype = Join_Accept;
  MHDR.RFU = Teste1;
  MHDR.Version = Version_1;

  Serial.print("MHDR = ");

  for(int i=2; i>=0; i--){
    Serial.print(bitRead(MHDR.Mtype,i));
  }

  for(int i=2; i>=0; i--){
    Serial.print(bitRead(MHDR.RFU,i));
  }

  for(int i=1; i>=0; i--){
    Serial.print(bitRead(MHDR.Version,i));
  }  

  Serial.println(" ");
}

void loop(){
  

}