text: /*!
   * \file      RegionRU864.c
   *
   * \brief     Region implementation for RU864
   *
   * \copyright Revised BSD License, see section \ref LICENSE.
   *
   * \code
   *                ______                              _
   *               / _____)             _              | |
   *              ( (____  _____ ____ _| |_ _____  ____| |__
   *               \____ \| ___ |    (_   _) ___ |/ ___)  _ \
   *               _____) ) ____| | | || |_| ____( (___| | | |
   *              (______/|_____)_|_|_| \__)_____)\____)_| |_|
   *              (C)2013-2017 Semtech
   *
   *               ___ _____ _   ___ _  _____ ___  ___  ___ ___
   *              / __|_   _/_\ / __| |/ / __/ _ \| _ \/ __| __|
   *              \__ \ | |/ _ \ (__| ' <| _| (_) |   / (__| _|
   *              |___/ |_/_/ \_\___|_|\_\_| \___/|_|_\\___|___|
   *              embedded.connectivity.solutions===============
   *
   * \endcode
   *
   * \author    Miguel Luis ( Semtech )
   *
   * \author    Gregory Cristian ( Semtech )
   *
   * \author    Daniel Jaeckle ( STACKFORCE )
  */
  #include "utilities.h"
  
  #include "RegionCommon.h"
  #include "RegionRU864.h"
  #include "util_console.h"
  
  // Definitions
  #define CHANNELS_MASK_SIZE              1
  
  /*!
   * Region specific context
   */
  typedef struct sRegionRU864NvmCtx
  {
      /*!
       * LoRaMAC channels
       */
      ChannelParams_t Channels[ RU864_MAX_NB_CHANNELS ];
      /*!
       * LoRaMac bands
       */
      Band_t Bands[ RU864_MAX_NB_BANDS ];
      /*!
       * LoRaMac channels mask
       */
      uint16_t ChannelsMask[ CHANNELS_MASK_SIZE ];
      /*!
       * LoRaMac channels default mask
       */
      uint16_t ChannelsDefaultMask[ CHANNELS_MASK_SIZE ];
  }RegionRU864NvmCtx_t;
  
  /*
   * Non-volatile module context.
   */
  static RegionRU864NvmCtx_t NvmCtx;
  
  // Static functions
  static int8_t GetNextLowerTxDr( int8_t dr, int8_t minDr )
  {
      uint8_t nextLowerDr = 0;
  
      if( dr == minDr )
      {
          nextLowerDr = minDr;
      }
      else
      {
          nextLowerDr = dr - 1;
      }
      return nextLowerDr;
  }
  
  static uint32_t GetBandwidth( uint32_t drIndex )
  {
      switch( BandwidthsRU864[drIndex] )
      {
          default:
          case 125000:
              return 0;
          case 250000:
              return 1;
          case 500000:
              return 2;
      }
  }
  
  static int8_t LimitTxPower( int8_t txPower, int8_t maxBandTxPower, int8_t datarate, uint16_t* channelsMask )
  {
      int8_t txPowerResult = txPower;
  
      // Limit tx power to the band max
      txPowerResult =  MAX( txPower, maxBandTxPower );
  
      return txPowerResult;
  }
  
  static bool VerifyTxFreq( uint32_t freq, uint8_t *band )
  {
      // Check radio driver support
      if( Radio.CheckRfFrequency( freq ) == false )
      {
          return false;
      }
  
      // Check frequency bands
      if( ( freq >= 864000000 ) && ( freq <= 870000000 ) )
      {
          *band = 0;
      }
      else
      {
          return false;
      }
      return true;
  }
  
  static uint8_t CountNbOfEnabledChannels( bool joined, uint8_t datarate, uint16_t* channelsMask, ChannelParams_t* channels, Band_t* bands, uint8_t* enabledChannels, uint8_t* delayTx )
  {
      uint8_t nbEnabledChannels = 0;
      uint8_t delayTransmission = 0;
  
      for( uint8_t i = 0, k = 0; i < RU864_MAX_NB_CHANNELS; i += 16, k++ )
      {
          for( uint8_t j = 0; j < 16; j++ )
          {
              if( ( channelsMask[k] & ( 1 << j ) ) != 0 )
              {
                  if( channels[i + j].Frequency == 0 )
                  { // Check if the channel is enabled
                      continue;
                  }
                  if( joined == false )
                  {
                      if( ( RU864_JOIN_CHANNELS & ( 1 << j ) ) == 0 )
                      {
                          continue;
                      }
                  }
                  if( RegionCommonValueInRange( datarate, channels[i + j].DrRange.Fields.Min,
                                                channels[i + j].DrRange.Fields.Max ) == false )
                  { // Check if the current channel selection supports the given datarate
                      continue;
                  }
                  if( bands[channels[i + j].Band].TimeOff > 0 )
                  { // Check if the band is available for transmission
                      delayTransmission++;
                      continue;
                  }
                  enabledChannels[nbEnabledChannels++] = i + j;
              }
          }
      }
  
      *delayTx = delayTransmission;
      return nbEnabledChannels;
  }
  
  PhyParam_t RegionRU864GetPhyParam( GetPhyParams_t* getPhy )
  {
      PhyParam_t phyParam = { 0 };
  
      switch( getPhy->Attribute )
      {
          case PHY_MIN_RX_DR:
          {
              phyParam.Value = RU864_RX_MIN_DATARATE;
              break;
          }
          case PHY_MIN_TX_DR:
          {
              phyParam.Value = RU864_TX_MIN_DATARATE;
              break;
          }
          case PHY_DEF_TX_DR:
          {
              phyParam.Value = RU864_DEFAULT_DATARATE;
              break;
          }
          case PHY_NEXT_LOWER_TX_DR:
          {
              phyParam.Value = GetNextLowerTxDr( getPhy->Datarate, RU864_TX_MIN_DATARATE );
              break;
          }
          case PHY_DEF_TX_POWER:
          {
              phyParam.Value = RU864_DEFAULT_TX_POWER;
              break;
          }
          case PHY_DEF_ADR_ACK_LIMIT:
          {
              phyParam.Value = RU864_ADR_ACK_LIMIT;
              break;
          }
          case PHY_DEF_ADR_ACK_DELAY:
          {
              phyParam.Value = RU864_ADR_ACK_DELAY;
              break;
          }
          case PHY_MAX_PAYLOAD:
          {
              phyParam.Value = MaxPayloadOfDatarateRU864[getPhy->Datarate];
              break;
          }
          case PHY_MAX_PAYLOAD_REPEATER:
          {
              phyParam.Value = MaxPayloadOfDatarateRepeaterRU864[getPhy->Datarate];
              break;
          }
          case PHY_DUTY_CYCLE:
          {
              phyParam.Value = RU864_DUTY_CYCLE_ENABLED;
              break;
          }
          case PHY_MAX_RX_WINDOW:
          {
              phyParam.Value = RU864_MAX_RX_WINDOW;
              break;
          }
          case PHY_RECEIVE_DELAY1:
          {
              phyParam.Value = RU864_RECEIVE_DELAY1;
              break;
          }
          case PHY_RECEIVE_DELAY2:
          {
              phyParam.Value = RU864_RECEIVE_DELAY2;
              break;
          }
          case PHY_JOIN_ACCEPT_DELAY1:
          {
              phyParam.Value = RU864_JOIN_ACCEPT_DELAY1;
              break;
          }
          case PHY_JOIN_ACCEPT_DELAY2:
          {
              phyParam.Value = RU864_JOIN_ACCEPT_DELAY2;
              break;
          }
          case PHY_ACK_TIMEOUT:
          {
              phyParam.Value = ( RU864_ACKTIMEOUT + randr( -RU864_ACK_TIMEOUT_RND, RU864_ACK_TIMEOUT_RND ) );
              break;
          }
          case PHY_DEF_DR1_OFFSET:
          {
              phyParam.Value = RU864_DEFAULT_RX1_DR_OFFSET;
              break;
          }
          case PHY_DEF_RX2_FREQUENCY:
          {
              phyParam.Value = RU864_RX_WND_2_FREQ;
              break;
          }
          case PHY_DEF_RX2_DR:
          {
              phyParam.Value = RU864_RX_WND_2_DR;
              break;
          }
          case PHY_CHANNELS_MASK:
          {
              phyParam.ChannelsMask = NvmCtx.ChannelsMask;
              break;
          }
          case PHY_CHANNELS_DEFAULT_MASK:
          {
              phyParam.ChannelsMask = NvmCtx.ChannelsDefaultMask;
              break;
          }
          case PHY_MAX_NB_CHANNELS:
          {
              phyParam.Value = RU864_MAX_NB_CHANNELS;
              break;
          }
          case PHY_CHANNELS:
          {
              phyParam.Channels = NvmCtx.Channels;
              break;
          }
          case PHY_DEF_UPLINK_DWELL_TIME:
          case PHY_DEF_DOWNLINK_DWELL_TIME:
          {
              phyParam.Value = 0;
              break;
          }
          case PHY_DEF_MAX_EIRP:
          {
              phyParam.fValue = RU864_DEFAULT_MAX_EIRP;
              break;
          }
          case PHY_DEF_ANTENNA_GAIN:
          {
              phyParam.fValue = RU864_DEFAULT_ANTENNA_GAIN;
              break;
          }
          case PHY_BEACON_CHANNEL_FREQ:
          {
              phyParam.Value = RU864_BEACON_CHANNEL_FREQ;
              break;
          }
          case PHY_BEACON_FORMAT:
          {
              phyParam.BeaconFormat.BeaconSize = RU864_BEACON_SIZE;
              phyParam.BeaconFormat.Rfu1Size = RU864_RFU1_SIZE;
              phyParam.BeaconFormat.Rfu2Size = RU864_RFU2_SIZE;
              break;
          }
          case PHY_BEACON_CHANNEL_DR:
          {
              phyParam.Value = RU864_BEACON_CHANNEL_DR;
              break;
          }
          default:
          {
              break;
          }
      }
  
      return phyParam;
  }
  
  void RegionRU864SetBandTxDone( SetBandTxDoneParams_t* txDone )
  {
      RegionCommonSetBandTxDone( txDone->Joined, &NvmCtx.Bands[NvmCtx.Channels[txDone->Channel].Band], txDone->LastTxDoneTime );
  }
  
  void RegionRU864InitDefaults( InitDefaultsParams_t* params )
  {
      Band_t bands[RU864_MAX_NB_BANDS] =
      {
          RU864_BAND0
      };
  
      switch( params->Type )
      {
          case INIT_TYPE_INIT:
          {
              // Initialize bands
              memcpy1( ( uint8_t* )NvmCtx.Bands, ( uint8_t* )bands, sizeof( Band_t ) * RU864_MAX_NB_BANDS );
  
              // Channels
              NvmCtx.Channels[0] = ( ChannelParams_t ) RU864_LC1;
              NvmCtx.Channels[1] = ( ChannelParams_t ) RU864_LC2;
  
              // Initialize the channels default mask
              NvmCtx.ChannelsDefaultMask[0] = LC( 1 ) + LC( 2 );
              // Update the channels mask
              RegionCommonChanMaskCopy( NvmCtx.ChannelsMask, NvmCtx.ChannelsDefaultMask, 1 );
              break;
          }
          case INIT_TYPE_RESTORE_CTX:
          {
              if( params->NvmCtx != 0 )
              {
                  memcpy1( (uint8_t*) &NvmCtx, (uint8_t*) params->NvmCtx, sizeof( NvmCtx ) );
              }
              break;
          }
          case INIT_TYPE_RESTORE_DEFAULT_CHANNELS:
          {
              // Restore channels default mask
              NvmCtx.ChannelsMask[0] |= NvmCtx.ChannelsDefaultMask[0];
              break;
          }
          case INIT_TYPE_APP_DEFAULTS:
          {
              // Update the channels mask defaults
              RegionCommonChanMaskCopy( NvmCtx.ChannelsMask, NvmCtx.ChannelsDefaultMask, 1 );
              break;
          }
          default:
          {
              break;
          }
      }
  }
  
  void* RegionRU864GetNvmCtx( GetNvmCtxParams_t* params )
  {
      params->nvmCtxSize = sizeof( RegionRU864NvmCtx_t );
      return &NvmCtx;
  }
  
  bool RegionRU864Verify( VerifyParams_t* verify, PhyAttribute_t phyAttribute )
  {
      switch( phyAttribute )
      {
          case PHY_TX_DR:
          {
              return RegionCommonValueInRange( verify->DatarateParams.Datarate, RU864_TX_MIN_DATARATE, RU864_TX_MAX_DATARATE );
          }
          case PHY_DEF_TX_DR:
          {
              return RegionCommonValueInRange( verify->DatarateParams.Datarate, DR_0, DR_5 );
          }
          case PHY_RX_DR:
          {
              return RegionCommonValueInRange( verify->DatarateParams.Datarate, RU864_RX_MIN_DATARATE, RU864_RX_MAX_DATARATE );
          }
          case PHY_DEF_TX_POWER:
          case PHY_TX_POWER:
          {
              // Remark: switched min and max!
              return RegionCommonValueInRange( verify->TxPower, RU864_MAX_TX_POWER, RU864_MIN_TX_POWER );
          }
          case PHY_DUTY_CYCLE:
          {
              return RU864_DUTY_CYCLE_ENABLED;
          }
          default:
              return false;
      }
  }
  
  void RegionRU864ApplyCFList( ApplyCFListParams_t* applyCFList )
  {
      ChannelParams_t newChannel;
      ChannelAddParams_t channelAdd;
      ChannelRemoveParams_t channelRemove;
  
      // Setup default datarate range
      newChannel.DrRange.Value = ( DR_5 << 4 ) | DR_0;
  
      // Size of the optional CF list
      if( applyCFList->Size != 16 )
      {
          return;
      }
  
      // Last byte CFListType must be 0 to indicate the CFList contains a list of frequencies
      if( applyCFList->Payload[15] != 0 )
      {
          return;
      }
  
      // Last byte is RFU, don't take it into account
      for( uint8_t i = 0, chanIdx = RU864_NUMB_DEFAULT_CHANNELS; chanIdx < RU864_MAX_NB_CHANNELS; i+=3, chanIdx++ )
      {
          if( chanIdx < ( RU864_NUMB_CHANNELS_CF_LIST + RU864_NUMB_DEFAULT_CHANNELS ) )
          {
              // Channel frequency
              newChannel.Frequency = (uint32_t) applyCFList->Payload[i];
              newChannel.Frequency |= ( (uint32_t) applyCFList->Payload[i + 1] << 8 );
              newChannel.Frequency |= ( (uint32_t) applyCFList->Payload[i + 2] << 16 );
              newChannel.Frequency *= 100;
  
              // Initialize alternative frequency to 0
              newChannel.Rx1Frequency = 0;
          }
          else
          {
              newChannel.Frequency = 0;
              newChannel.DrRange.Value = 0;
              newChannel.Rx1Frequency = 0;
          }
  
          if( newChannel.Frequency != 0 )
          {
              channelAdd.NewChannel = &newChannel;
              channelAdd.ChannelId = chanIdx;
  
              // Try to add all channels
              RegionRU864ChannelAdd( &channelAdd );
          }
          else
          {
              channelRemove.ChannelId = chanIdx;
  
              RegionRU864ChannelsRemove( &channelRemove );
          }
      }
  }
  
  bool RegionRU864ChanMaskSet( ChanMaskSetParams_t* chanMaskSet )
  {
      switch( chanMaskSet->ChannelsMaskType )
      {
          case CHANNELS_MASK:
          {
              RegionCommonChanMaskCopy( NvmCtx.ChannelsMask, chanMaskSet->ChannelsMaskIn, 1 );
              break;
          }
          case CHANNELS_DEFAULT_MASK:
          {
              RegionCommonChanMaskCopy( NvmCtx.ChannelsDefaultMask, chanMaskSet->ChannelsMaskIn, 1 );
              break;
          }
          default:
              return false;
      }
      return true;
  }
  
  void RegionRU864ComputeRxWindowParameters( int8_t datarate, uint8_t minRxSymbols, uint32_t rxError, RxConfigParams_t *rxConfigParams )
  {
      double tSymbol = 0.0;
  
      // Get the datarate, perform a boundary check
      rxConfigParams->Datarate = MIN( datarate, RU864_RX_MAX_DATARATE );
      rxConfigParams->Bandwidth = GetBandwidth( rxConfigParams->Datarate );
  
      if( rxConfigParams->Datarate == DR_7 )
      { // FSK
          tSymbol = RegionCommonComputeSymbolTimeFsk( DataratesRU864[rxConfigParams->Datarate] );
      }
      else
      { // LoRa
          tSymbol = RegionCommonComputeSymbolTimeLoRa( DataratesRU864[rxConfigParams->Datarate], BandwidthsRU864[rxConfigParams->Datarate] );
      }
  
      RegionCommonComputeRxWindowParameters( tSymbol, minRxSymbols, rxError, Radio.GetWakeupTime( ), &rxConfigParams->WindowTimeout, &rxConfigParams->WindowOffset );
  }
  
  bool RegionRU864RxConfig( RxConfigParams_t* rxConfig, int8_t* datarate )
  {
      RadioModems_t modem;
      int8_t dr = rxConfig->Datarate;
      uint8_t maxPayload = 0;
      int8_t phyDr = 0;
      uint32_t frequency = rxConfig->Frequency;
  
      if( Radio.GetStatus( ) != RF_IDLE )
      {
          return false;
      }
  
      if( rxConfig->RxSlot == RX_SLOT_WIN_1 )
      {
          // Apply window 1 frequency
          frequency = NvmCtx.Channels[rxConfig->Channel].Frequency;
          // Apply the alternative RX 1 window frequency, if it is available
          if( NvmCtx.Channels[rxConfig->Channel].Rx1Frequency != 0 )
          {
              frequency = NvmCtx.Channels[rxConfig->Channel].Rx1Frequency;
          }
      }
  
      // Read the physical datarate from the datarates table
      phyDr = DataratesRU864[dr];
  
      Radio.SetChannel( frequency );
  
      // Radio configuration
      if( dr == DR_7 )
      {
          modem = MODEM_FSK;
          Radio.SetRxConfig( modem, 50000, phyDr * 1000, 0, 83333, 5, rxConfig->WindowTimeout, false, 0, true, 0, 0, false, rxConfig->RxContinuous );
      }
      else
      {
          modem = MODEM_LORA;
          Radio.SetRxConfig( modem, rxConfig->Bandwidth, phyDr, 1, 0, 8, rxConfig->WindowTimeout, false, 0, false, 0, 0, true, rxConfig->RxContinuous );
      }
  
      if( rxConfig->RepeaterSupport == true )
      {
          maxPayload = MaxPayloadOfDatarateRepeaterRU864[dr];
      }
      else
      {
          maxPayload = MaxPayloadOfDatarateRU864[dr];
      }
  
      Radio.SetMaxPayloadLength( modem, maxPayload + LORA_MAC_FRMPAYLOAD_OVERHEAD );
      TVL1( PRINTF( "RX on freq %d Hz at DR %d\n\r", frequency, dr );)
  
      *datarate = (uint8_t) dr;
      return true;
  }
  
  bool RegionRU864TxConfig( TxConfigParams_t* txConfig, int8_t* txPower, TimerTime_t* txTimeOnAir )
  {
      RadioModems_t modem;
      int8_t phyDr = DataratesRU864[txConfig->Datarate];
      int8_t txPowerLimited = LimitTxPower( txConfig->TxPower, NvmCtx.Bands[NvmCtx.Channels[txConfig->Channel].Band].TxMaxPower, txConfig->Datarate, NvmCtx.ChannelsMask );
      uint32_t bandwidth = GetBandwidth( txConfig->Datarate );
      int8_t phyTxPower = 0;
  
      // Calculate physical TX power
      phyTxPower = RegionCommonComputeTxPower( txPowerLimited, txConfig->MaxEirp, txConfig->AntennaGain );
  
      // Setup the radio frequency
      Radio.SetChannel( NvmCtx.Channels[txConfig->Channel].Frequency );
  
      if( txConfig->Datarate == DR_7 )
      { // High Speed FSK channel
          modem = MODEM_FSK;
          Radio.SetTxConfig( modem, phyTxPower, 25000, bandwidth, phyDr * 1000, 0, 5, false, true, 0, 0, false, 3000 );
      }
      else
      {
          modem = MODEM_LORA;
          Radio.SetTxConfig( modem, phyTxPower, 0, bandwidth, phyDr, 1, 8, false, true, 0, 0, false, 3000 );
      }
      TVL1( PRINTF( "TX on freq %d Hz at DR %d\n\r", NvmCtx.Channels[txConfig->Channel].Frequency, txConfig->Datarate );)
      // Setup maximum payload lenght of the radio driver
      Radio.SetMaxPayloadLength( modem, txConfig->PktLen );
      // Get the time-on-air of the next tx frame
      *txTimeOnAir = Radio.TimeOnAir( modem, txConfig->PktLen );
  
      *txPower = txPowerLimited;
      return true;
  }
  
  uint8_t RegionRU864LinkAdrReq( LinkAdrReqParams_t* linkAdrReq, int8_t* drOut, int8_t* txPowOut, uint8_t* nbRepOut, uint8_t* nbBytesParsed )
  {
      uint8_t status = 0x07;
      RegionCommonLinkAdrParams_t linkAdrParams;
      uint8_t nextIndex = 0;
      uint8_t bytesProcessed = 0;
      uint16_t chMask = 0;
      GetPhyParams_t getPhy;
      PhyParam_t phyParam;
      RegionCommonLinkAdrReqVerifyParams_t linkAdrVerifyParams;
  
      while( bytesProcessed < linkAdrReq->PayloadSize )
      {
          // Get ADR request parameters
          nextIndex = RegionCommonParseLinkAdrReq( &( linkAdrReq->Payload[bytesProcessed] ), &linkAdrParams );
  
          if( nextIndex == 0 )
              break; // break loop, since no more request has been found
  
          // Update bytes processed
          bytesProcessed += nextIndex;
  
          // Revert status, as we only check the last ADR request for the channel mask KO
          status = 0x07;
  
          // Setup temporary channels mask
          chMask = linkAdrParams.ChMask;
  
          // Verify channels mask
          if( ( linkAdrParams.ChMaskCtrl == 0 ) && ( chMask == 0 ) )
          {
              status &= 0xFE; // Channel mask KO
          }
          else if( ( ( linkAdrParams.ChMaskCtrl >= 1 ) && ( linkAdrParams.ChMaskCtrl <= 5 )) ||
                  ( linkAdrParams.ChMaskCtrl >= 7 ) )
          {
              // RFU
              status &= 0xFE; // Channel mask KO
          }
          else
          {
              for( uint8_t i = 0; i < RU864_MAX_NB_CHANNELS; i++ )
              {
                  if( linkAdrParams.ChMaskCtrl == 6 )
                  {
                      if( NvmCtx.Channels[i].Frequency != 0 )
                      {
                          chMask |= 1 << i;
                      }
                  }
                  else
                  {
                      if( ( ( chMask & ( 1 << i ) ) != 0 ) &&
                          ( NvmCtx.Channels[i].Frequency == 0 ) )
                      {// Trying to enable an undefined channel
                          status &= 0xFE; // Channel mask KO
                      }
                  }
              }
          }
      }
  
      // Get the minimum possible datarate
      getPhy.Attribute = PHY_MIN_TX_DR;
      getPhy.UplinkDwellTime = linkAdrReq->UplinkDwellTime;
      phyParam = RegionRU864GetPhyParam( &getPhy );
  
      linkAdrVerifyParams.Status = status;
      linkAdrVerifyParams.AdrEnabled = linkAdrReq->AdrEnabled;
      linkAdrVerifyParams.Datarate = linkAdrParams.Datarate;
      linkAdrVerifyParams.TxPower = linkAdrParams.TxPower;
      linkAdrVerifyParams.NbRep = linkAdrParams.NbRep;
      linkAdrVerifyParams.CurrentDatarate = linkAdrReq->CurrentDatarate;
      linkAdrVerifyParams.CurrentTxPower = linkAdrReq->CurrentTxPower;
      linkAdrVerifyParams.CurrentNbRep = linkAdrReq->CurrentNbRep;
      linkAdrVerifyParams.NbChannels = RU864_MAX_NB_CHANNELS;
      linkAdrVerifyParams.ChannelsMask = &chMask;
      linkAdrVerifyParams.MinDatarate = ( int8_t )phyParam.Value;
      linkAdrVerifyParams.MaxDatarate = RU864_TX_MAX_DATARATE;
      linkAdrVerifyParams.Channels = NvmCtx.Channels;
      linkAdrVerifyParams.MinTxPower = RU864_MIN_TX_POWER;
      linkAdrVerifyParams.MaxTxPower = RU864_MAX_TX_POWER;
      linkAdrVerifyParams.Version = linkAdrReq->Version;
  
      // Verify the parameters and update, if necessary
      status = RegionCommonLinkAdrReqVerifyParams( &linkAdrVerifyParams, &linkAdrParams.Datarate, &linkAdrParams.TxPower, &linkAdrParams.NbRep );
  
      // Update channelsMask if everything is correct
      if( status == 0x07 )
      {
          // Set the channels mask to a default value
          memset1( ( uint8_t* ) NvmCtx.ChannelsMask, 0, sizeof( NvmCtx.ChannelsMask ) );
          // Update the channels mask
          NvmCtx.ChannelsMask[0] = chMask;
      }
  
      // Update status variables
      *drOut = linkAdrParams.Datarate;
      *txPowOut = linkAdrParams.TxPower;
      *nbRepOut = linkAdrParams.NbRep;
      *nbBytesParsed = bytesProcessed;
  
      return status;
  }
  
  uint8_t RegionRU864RxParamSetupReq( RxParamSetupReqParams_t* rxParamSetupReq )
  {
      uint8_t status = 0x07;
  
      // Verify radio frequency
      if( Radio.CheckRfFrequency( rxParamSetupReq->Frequency ) == false )
      {
          status &= 0xFE; // Channel frequency KO
      }
  
      // Verify datarate
      if( RegionCommonValueInRange( rxParamSetupReq->Datarate, RU864_RX_MIN_DATARATE, RU864_RX_MAX_DATARATE ) == false )
      {
          status &= 0xFD; // Datarate KO
      }
  
      // Verify datarate offset
      if( RegionCommonValueInRange( rxParamSetupReq->DrOffset, RU864_MIN_RX1_DR_OFFSET, RU864_MAX_RX1_DR_OFFSET ) == false )
      {
          status &= 0xFB; // Rx1DrOffset range KO
      }
  
      return status;
  }
  
  uint8_t RegionRU864NewChannelReq( NewChannelReqParams_t* newChannelReq )
  {
      uint8_t status = 0x03;
      ChannelAddParams_t channelAdd;
      ChannelRemoveParams_t channelRemove;
  
      if( newChannelReq->NewChannel->Frequency == 0 )
      {
          channelRemove.ChannelId = newChannelReq->ChannelId;
  
          // Remove
          if( RegionRU864ChannelsRemove( &channelRemove ) == false )
          {
              status &= 0xFC;
          }
      }
      else
      {
          channelAdd.NewChannel = newChannelReq->NewChannel;
          channelAdd.ChannelId = newChannelReq->ChannelId;
  
          switch( RegionRU864ChannelAdd( &channelAdd ) )
          {
              case LORAMAC_STATUS_OK:
              {
                  break;
              }
              case LORAMAC_STATUS_FREQUENCY_INVALID:
              {
                  status &= 0xFE;
                  break;
              }
              case LORAMAC_STATUS_DATARATE_INVALID:
              {
                  status &= 0xFD;
                  break;
              }
              case LORAMAC_STATUS_FREQ_AND_DR_INVALID:
              {
                  status &= 0xFC;
                  break;
              }
              default:
              {
                  status &= 0xFC;
                  break;
              }
          }
      }
  
      return status;
  }
  
  int8_t RegionRU864TxParamSetupReq( TxParamSetupReqParams_t* txParamSetupReq )
  {
      return -1;
  }
  
  uint8_t RegionRU864DlChannelReq( DlChannelReqParams_t* dlChannelReq )
  {
      uint8_t status = 0x03;
      uint8_t band = 0;
  
      // Verify if the frequency is supported
      if( VerifyTxFreq( dlChannelReq->Rx1Frequency, &band ) == false )
      {
          status &= 0xFE;
      }
  
      // Verify if an uplink frequency exists
      if( NvmCtx.Channels[dlChannelReq->ChannelId].Frequency == 0 )
      {
          status &= 0xFD;
      }
  
      // Apply Rx1 frequency, if the status is OK
      if( status == 0x03 )
      {
          NvmCtx.Channels[dlChannelReq->ChannelId].Rx1Frequency = dlChannelReq->Rx1Frequency;
      }
  
      return status;
  }
  
  int8_t RegionRU864AlternateDr( int8_t currentDr )
  {
      return currentDr;
  }
  
  void RegionRU864CalcBackOff( CalcBackOffParams_t* calcBackOff )
  {
      RegionCommonCalcBackOffParams_t calcBackOffParams;
  
      calcBackOffParams.Channels = NvmCtx.Channels;
      calcBackOffParams.Bands = NvmCtx.Bands;
      calcBackOffParams.LastTxIsJoinRequest = calcBackOff->LastTxIsJoinRequest;
      calcBackOffParams.Joined = calcBackOff->Joined;
      calcBackOffParams.DutyCycleEnabled = calcBackOff->DutyCycleEnabled;
      calcBackOffParams.Channel = calcBackOff->Channel;
      calcBackOffParams.ElapsedTime = calcBackOff->ElapsedTime;
      calcBackOffParams.TxTimeOnAir = calcBackOff->TxTimeOnAir;
  
      RegionCommonCalcBackOff( &calcBackOffParams );
  }
  
  LoRaMacStatus_t RegionRU864NextChannel( NextChanParams_t* nextChanParams, uint8_t* channel, TimerTime_t* time, TimerTime_t* aggregatedTimeOff )
  {
      uint8_t nbEnabledChannels = 0;
      uint8_t delayTx = 0;
      uint8_t enabledChannels[RU864_MAX_NB_CHANNELS] = { 0 };
      TimerTime_t nextTxDelay = 0;
  
      if( RegionCommonCountChannels( NvmCtx.ChannelsMask, 0, 1 ) == 0 )
      { // Reactivate default channels
          NvmCtx.ChannelsMask[0] |= LC( 1 ) + LC( 2 );
      }
  
      if( nextChanParams->AggrTimeOff <= TimerGetElapsedTime( nextChanParams->LastAggrTx ) )
      {
          // Reset Aggregated time off
          *aggregatedTimeOff = 0;
  
          // Update bands Time OFF
          nextTxDelay = RegionCommonUpdateBandTimeOff( nextChanParams->Joined, nextChanParams->DutyCycleEnabled, NvmCtx.Bands, RU864_MAX_NB_BANDS );
  
          // Search how many channels are enabled
          nbEnabledChannels = CountNbOfEnabledChannels( nextChanParams->Joined, nextChanParams->Datarate,
                                                        NvmCtx.ChannelsMask, NvmCtx.Channels,
                                                        NvmCtx.Bands, enabledChannels, &delayTx );
      }
      else
      {
          delayTx++;
          nextTxDelay = nextChanParams->AggrTimeOff - TimerGetElapsedTime( nextChanParams->LastAggrTx );
      }
  
      if( nbEnabledChannels > 0 )
      {
          // We found a valid channel
          *channel = enabledChannels[randr( 0, nbEnabledChannels - 1 )];
  
          *time = 0;
          return LORAMAC_STATUS_OK;
      }
      else
      {
          if( delayTx > 0 )
          {
              // Delay transmission due to AggregatedTimeOff or to a band time off
              *time = nextTxDelay;
              return LORAMAC_STATUS_DUTYCYCLE_RESTRICTED;
          }
          // Datarate not supported by any channel, restore defaults
          NvmCtx.ChannelsMask[0] |= LC( 1 ) + LC( 2 );
          *time = 0;
          return LORAMAC_STATUS_NO_CHANNEL_FOUND;
      }
  }
  
  LoRaMacStatus_t RegionRU864ChannelAdd( ChannelAddParams_t* channelAdd )
  {
      uint8_t band = 0;
      bool drInvalid = false;
      bool freqInvalid = false;
      uint8_t id = channelAdd->ChannelId;
  
      if( id >= RU864_MAX_NB_CHANNELS )
      {
          return LORAMAC_STATUS_PARAMETER_INVALID;
      }
  
      // Validate the datarate range
      if( RegionCommonValueInRange( channelAdd->NewChannel->DrRange.Fields.Min, RU864_TX_MIN_DATARATE, RU864_TX_MAX_DATARATE ) == false )
      {
          drInvalid = true;
      }
      if( RegionCommonValueInRange( channelAdd->NewChannel->DrRange.Fields.Max, RU864_TX_MIN_DATARATE, RU864_TX_MAX_DATARATE ) == false )
      {
          drInvalid = true;
      }
      if( channelAdd->NewChannel->DrRange.Fields.Min > channelAdd->NewChannel->DrRange.Fields.Max )
      {
          drInvalid = true;
      }
  
      // Default channels don't accept all values
      if( id < RU864_NUMB_DEFAULT_CHANNELS )
      {
          // Validate the datarate range for min: must be DR_0
          if( channelAdd->NewChannel->DrRange.Fields.Min > DR_0 )
          {
              drInvalid = true;
          }
          // Validate the datarate range for max: must be DR_5 <= Max <= TX_MAX_DATARATE
          if( RegionCommonValueInRange( channelAdd->NewChannel->DrRange.Fields.Max, DR_5, RU864_TX_MAX_DATARATE ) == false )
          {
              drInvalid = true;
          }
          // We are not allowed to change the frequency
          if( channelAdd->NewChannel->Frequency != NvmCtx.Channels[id].Frequency )
          {
              freqInvalid = true;
          }
      }
  
      // Check frequency
      if( freqInvalid == false )
      {
          if( VerifyTxFreq( channelAdd->NewChannel->Frequency, &band ) == false )
          {
              freqInvalid = true;
          }
      }
  
      // Check status
      if( ( drInvalid == true ) && ( freqInvalid == true ) )
      {
          return LORAMAC_STATUS_FREQ_AND_DR_INVALID;
      }
      if( drInvalid == true )
      {
          return LORAMAC_STATUS_DATARATE_INVALID;
      }
      if( freqInvalid == true )
      {
          return LORAMAC_STATUS_FREQUENCY_INVALID;
      }
  
      memcpy1( ( uint8_t* ) &(NvmCtx.Channels[id]), ( uint8_t* ) channelAdd->NewChannel, sizeof( NvmCtx.Channels[id] ) );
      NvmCtx.Channels[id].Band = band;
      NvmCtx.ChannelsMask[0] |= ( 1 << id );
      return LORAMAC_STATUS_OK;
  }
  
  bool RegionRU864ChannelsRemove( ChannelRemoveParams_t* channelRemove  )
  {
      uint8_t id = channelRemove->ChannelId;
  
      if( id < RU864_NUMB_DEFAULT_CHANNELS )
      {
          return false;
      }
  
      // Remove the channel from the list of channels
      NvmCtx.Channels[id] = ( ChannelParams_t ){ 0, 0, { 0 }, 0 };
  
      return RegionCommonChanDisable( NvmCtx.ChannelsMask, id, RU864_MAX_NB_CHANNELS );
  }
  
  void RegionRU864SetContinuousWave( ContinuousWaveParams_t* continuousWave )
  {
      int8_t txPowerLimited = LimitTxPower( continuousWave->TxPower, NvmCtx.Bands[NvmCtx.Channels[continuousWave->Channel].Band].TxMaxPower, continuousWave->Datarate, NvmCtx.ChannelsMask );
      int8_t phyTxPower = 0;
      uint32_t frequency = NvmCtx.Channels[continuousWave->Channel].Frequency;
  
      // Calculate physical TX power
      phyTxPower = RegionCommonComputeTxPower( txPowerLimited, continuousWave->MaxEirp, continuousWave->AntennaGain );
  
      Radio.SetTxContinuousWave( frequency, phyTxPower, continuousWave->Timeout );
  }
  
  uint8_t RegionRU864ApplyDrOffset( uint8_t downlinkDwellTime, int8_t dr, int8_t drOffset )
  {
      int8_t datarate = dr - drOffset;
  
      if( datarate < 0 )
      {
          datarate = DR_0;
      }
      return datarate;
  }
  
  void RegionRU864RxBeaconSetup( RxBeaconSetup_t* rxBeaconSetup, uint8_t* outDr )
  {
      RegionCommonRxBeaconSetupParams_t regionCommonRxBeaconSetup;
  
      regionCommonRxBeaconSetup.Datarates = DataratesRU864;
      regionCommonRxBeaconSetup.Frequency = rxBeaconSetup->Frequency;
      regionCommonRxBeaconSetup.BeaconSize = RU864_BEACON_SIZE;
      regionCommonRxBeaconSetup.BeaconDatarate = RU864_BEACON_CHANNEL_DR;
      regionCommonRxBeaconSetup.BeaconChannelBW = RU864_BEACON_CHANNEL_BW;
      regionCommonRxBeaconSetup.RxTime = rxBeaconSetup->RxTime;
      regionCommonRxBeaconSetup.SymbolTimeout = rxBeaconSetup->SymbolTimeout;
  
      RegionCommonRxBeaconSetup( &regionCommonRxBeaconSetup );
  
      // Store downlink datarate
      *outDr = RU864_BEACON_CHANNEL_DR;
  }
  