////////////////////////////////////////////////////////////////////////////////

  //Headers

  #include "mbed.h"

  #include "main.h"

  #include "sx1276-hal.h"

  #include "debug.h"

  ////////////////////////////////////////////////////////////////////////////////

  #define DEBUG_MESSAGE   1

  ////////////////////////////////////////////////////////////////////////////////

  //Modulation LoRa active

  #define USE_MODEM_LORA  1

  #define USE_MODEM_FSK   !USE_MODEM_LORA

  //Paramètres

  #define RF_FREQUENCY 868000000 //Hz : Fréquence de travail pour UE

  #define TX_OUTPUT_POWER 14     //dBm : puissance de sortie du signal

  #define LORA_BANDWIDTH 1         // 0:125 kHz de BP

  #define LORA_SPREADING_FACTOR 10 // [SF7..SF12] Portée du débit. grande portée inutile

  #define LORA_CODINGRATE 1

  #define LORA_PREAMBLE_LENGTH 8   // Same for Tx and Rx

  #define LORA_SYMBOL_TIMEOUT 5    // Symbols

  #define LORA_FIX_LENGTH_PAYLOAD_ON false

  #define LORA_FHSS_ENABLED true

  #define LORA_NB_SYMB_HOP 4

  #define LORA_IQ_INVERSION_ON false

  #define LORA_CRC_ENABLED true

  #define RX_TIMEOUT_VALUE 3500      // in ms

  #define BUFFER_SIZE 32        // Define the payload size here

  ////////////////////////////////////////////////////////////////////////////////

  

  ////////////////////////////////////////////////////////////////////////////////

  //Variables globales

  typedef enum

  {

      LOWPOWER = 0,

      IDLE,

      RX,

      RX_TIMEOUT,

      RX_ERROR,

      TX,

      TX_TIMEOUT,

      CAD,

      CAD_DONE

  }AppStates_t;

  

  volatile AppStates_t State = LOWPOWER;

  static RadioEvents_t RadioEvents;

  SX1276MB1xAS Radio( NULL );

  uint16_t BufferSize = BUFFER_SIZE;

  uint8_t Buffer[BUFFER_SIZE];

  int16_t RssiValue = 0.0;

  int8_t SnrValue = 0.0;

  const uint8_t TestMsg[] = "TEST";

  ////////////////////////////////////////////////////////////////////////////////

  

  ////////////////////////////////////////////////////////////////////////////////

  //Fonctions utiles

  //Debug pour savoir si le message a été transmis

  void OnTxDone( void )

  {

      Radio.SetChannel( HoppingFrequencies[0] );

      Radio.Sleep( );

      State = TX;

      debug_if( DEBUG_MESSAGE, "Envoye\n\r" );

  }

  //Time out de transmission. Échec de l'envoi

  void OnTxTimeout( void )

  {

      Radio.SetChannel(HoppingFrequencies[0]);

      Radio.Sleep( );

      State = TX_TIMEOUT;

      debug_if( DEBUG_MESSAGE, "Echec de l'envoi\n\r" );

  }

  

  //Modification du canal d'emission

  void OnFhssChangeChannel( uint8_t channelIndex )

  {

      Radio.SetChannel(HoppingFrequencies[channelIndex]);

      debug_if(DEBUG_MESSAGE, "F%d-", channelIndex);

  }

  ////////////////////////////////////////////////////////////////////////////////

  

  ////////////////////////////////////////////////////////////////////////////////

  //Main emission

  int main( void )

  {

      uint8_t i;

      debug("\n\n\rEmetteur SX1276\n\n\r");

  

      // Initialize Radio driver

      RadioEvents.TxDone = OnTxDone;

      RadioEvents.TxTimeout = OnTxTimeout;

      RadioEvents.FhssChangeChannel = OnFhssChangeChannel;

      Radio.Init(&RadioEvents);

      //Véification de la connexion avec la carte

      while(Radio.Read(REG_VERSION) == 0x00)

      {

          debug("Aucune radio detectee\n\r", NULL);

          wait(1);

      }

  

      //Checking du matériel connecté

      debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1276MB1LAS ) ), "\n\rMateriel detecte : SX1276MB1LAS < \n\r" );

      debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1276MB1MAS ) ), "\n\rMateriel detecte : SX1276MB1MAS < \n\r" );

      //Paramétrage du canal

      Radio.SetChannel( HoppingFrequencies[0] );

      #if USE_MODEM_LORA == 1

          debug_if( LORA_FHSS_ENABLED, "\n\n\rLORA FHSS Mode\n\n\r" );

          debug_if( !LORA_FHSS_ENABLED, "\n\n\rLORA Mode\n\n\r" );

          //Configuration du modem transmission

          Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,

                               LORA_SPREADING_FACTOR, LORA_CODINGRATE,

                               LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,

                               LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,

                               LORA_IQ_INVERSION_ON, 4000 );

      #else

          #error "Aucun modem defini"

      #endif

      debug_if( DEBUG_MESSAGE, "Procedure d'emission lancee\r\n" );

      //Boucle d'émission infinie

      while(1)

      {

         debug( "Tentative d'envoi :\r\n" );

         strcpy((char*)Buffer, (char*)TestMsg);

          // We fill the buffer with numbers for the payload

         for(i=4; i<BufferSize; i++)

         {

              Buffer[i] = i - 4;

         }

         debug( "Message envoye\r\n" );

         wait_ms(1000);

         Radio.Send(Buffer, BufferSize);

      }

  }