chore: update to latest STM32CubeWL 1.4.0

src/STM32CubeWL/LoRaWAN/Mac/LoRaMac.c

@@ -329,6 +329,19 @@ typedef struct sLoRaMacCtx
      * Buffer containing the MAC layer commands
      */
     uint8_t MacCommandsBuffer[LORA_MAC_COMMAND_MAX_LENGTH];
+    /*
+     * Stores the reference time at at 1st JoinReq or ReJoinReq.
+     *
+     * \remark Used for the BACKOFF_DC computation.
+     */
+    SysTime_t TxBackoffRefTime;
+    /*
+     * Indicates if \ref TxBackoffRefTime must be initialized or not.
+     * \ref TxBackoffRefTime must be initialized for 1st JoinReq or RejoinReq event.
+     *
+     * \remark Used for the BACKOFF_DC computation.
+     */
+    bool IsFirstJoinReqTx;
 }LoRaMacCtx_t;
 
 /*!
@@ -1076,7 +1089,7 @@ static void ProcessRadioTxDone( void )
     // Update last tx done time for the current channel
     txDone.Channel = MacCtx.Channel;
     txDone.LastTxDoneTime = TxDoneParams.CurTime;
-    txDone.ElapsedTimeSinceStartUp = SysTimeSub( SysTimeGetMcuTime( ), Nvm.MacGroup2.InitializationTime );
+    txDone.ElapsedTimeSinceTxBackoffRefTime = SysTimeSub( SysTimeGetMcuTime( ), MacCtx.TxBackoffRefTime );
     txDone.LastTxAirTime = MacCtx.TxTimeOnAir;
     txDone.Joined  = true;
     if( Nvm.MacGroup2.NetworkActivation == ACTIVATION_TYPE_NONE )
@@ -1398,6 +1411,9 @@ static void ProcessRadioRxDone( void )
                     ResetMacParameters( true );
                 }
 #endif /* LORAMAC_VERSION */
+                // Restarts the retransmission backoff algorithm by indicating that the next JoinReq or ReJoinReq
+                // is the first one.
+                MacCtx.IsFirstJoinReqTx = true;
             }
             else
             {
@@ -3471,6 +3487,13 @@ static LoRaMacStatus_t SendReJoinReq( JoinReqIdentifier_t joinReqType )
             break;
     }
 
+    if( MacCtx.IsFirstJoinReqTx == true )
+    {
+        MacCtx.IsFirstJoinReqTx = false;
+        // Store the current time as reference time for the retransmission backoff algorithm
+        MacCtx.TxBackoffRefTime = SysTimeGetMcuTime( );
+    }
+
     // Schedule frame
     status = ScheduleTx( allowDelayedTx );
     return status;
@@ -3618,7 +3641,7 @@ static LoRaMacStatus_t ScheduleTx( bool allowDelayedTx )
     nextChan.AggrTimeOff = Nvm.MacGroup1.AggregatedTimeOff;
     nextChan.Datarate = Nvm.MacGroup1.ChannelsDatarate;
     nextChan.DutyCycleEnabled = Nvm.MacGroup2.DutyCycleOn;
-    nextChan.ElapsedTimeSinceStartUp = SysTimeSub( SysTimeGetMcuTime( ), Nvm.MacGroup2.InitializationTime );
+    nextChan.ElapsedTimeSinceTxBackoffRefTime = SysTimeSub( SysTimeGetMcuTime( ), MacCtx.TxBackoffRefTime );
     nextChan.LastAggrTx = Nvm.MacGroup1.LastTxDoneTime;
     nextChan.LastTxIsJoinRequest = false;
     nextChan.Joined = true;
@@ -4698,8 +4721,8 @@ LoRaMacStatus_t LoRaMacInitialization( LoRaMacPrimitives_t* primitives, LoRaMacC
     TimerInit( &MacCtx.ForceRejoinReqCycleTimer, OnForceRejoinReqCycleTimerEvent );
 #endif /* LORAMAC_VERSION */
 
-    // Store the current initialization time
-    Nvm.MacGroup2.InitializationTime = SysTimeGetMcuTime( );
+    // At stack initialization no JoinReq has been transmitted yet
+    MacCtx.IsFirstJoinReqTx = true;
 
 #if (defined( LORAMAC_VERSION ) && (( LORAMAC_VERSION == 0x01000400 ) || ( LORAMAC_VERSION == 0x01010100 )))
     // Initialize MAC radio events

src/STM32CubeWL/LoRaWAN/Mac/LoRaMacInterfaces.h

@@ -1125,10 +1125,11 @@ typedef struct sLoRaMacNvmDataGroup2
      * Aggregated duty cycle management
      */
     uint16_t AggregatedDCycle;
-    /*!
+	/*!
      * Stores the time at LoRaMac initialization.
+	 * This value is no more used as defined by the LoRaWAN Specification v1.0.4.
      *
-     * \remark Used for the BACKOFF_DC computation.
+     * \remark Taken in the structure only for Backward compatibility.
      */
     SysTime_t InitializationTime;
     /*!

src/STM32CubeWL/LoRaWAN/Mac/Region/Region.h

@@ -466,7 +466,7 @@ typedef struct sSetBandTxDoneParams
     /*!
      * Elapsed time since initialization.
      */
-    SysTime_t ElapsedTimeSinceStartUp;
+    SysTime_t ElapsedTimeSinceTxBackoffRefTime;
 }SetBandTxDoneParams_t;
 
 /*!
@@ -814,7 +814,7 @@ typedef struct sNextChanParams
     /*!
      * Elapsed time since the start of the node.
      */
-    SysTime_t ElapsedTimeSinceStartUp;
+    SysTime_t ElapsedTimeSinceTxBackoffRefTime;
     /*!
      * Joined Set to true, if the last uplink was a join request
      */

src/STM32CubeWL/LoRaWAN/Mac/Region/RegionAS923.c

@@ -99,7 +99,7 @@
 #define AS923_MIN_RF_FREQUENCY            915000000
 #if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))
 #define AS923_MAX_RF_FREQUENCY            921000000
-#else
+#else 
 #define AS923_MAX_RF_FREQUENCY            928000000
 #endif
 
@@ -169,9 +169,6 @@
 #undef AS923_RX_MAX_DATARATE
 #define AS923_RX_MAX_DATARATE             DR_5
 
-#undef AS923_DEFAULT_MAX_EIRP
-#define AS923_DEFAULT_MAX_EIRP            13.0f
-
 /*!
  * STD-T108 Ver1.4 does not require dwell-time enforcement when using LBT on channels 28 to 38
  */
@@ -202,9 +199,6 @@
 #undef AS923_RX_MAX_DATARATE
 #define AS923_RX_MAX_DATARATE             DR_5
 
-#undef AS923_DEFAULT_MAX_EIRP
-#define AS923_DEFAULT_MAX_EIRP            13.0f
-
 /*!
  * STD-T108 Ver1.4 does not require dwell-time enforcement when using DC on channels 28 to 38
  */
@@ -217,19 +211,19 @@
 #undef AS923_DUTY_CYCLE_ENABLED
 #define AS923_DUTY_CYCLE_ENABLED          1
 
-#elif ( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP_CH37_CH61_LBT_DC )
+#elif ( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP_CH33_CH61_LBT_DC )
 
 /*
- * STD-T108 Ver1.4 allows the use of channels 37 to 61 with LBT and DC.
+ * STD-T108 Ver1.4 allows the use of channels 33 to 61 with LBT and DC.
  * However dwell time enforcement must be enabled
  */
 
-// Channel plan CHANNEL_PLAN_GROUP_AS923_1_JP_CH37_CH61_LBT_DC
+// Channel plan CHANNEL_PLAN_GROUP_AS923_1_JP_CH33_CH61_LBT_DC
 
 #define REGION_AS923_FREQ_OFFSET          0
 
 /*!
- * Restrict AS923 frequencies to channels 37 to 61
+ * Restrict AS923 frequencies to channels 33 to 61
  * Center frequencies 922.4 MHz to 928.0 MHz @ 200 kHz max bandwidth
  */
 #define AS923_MIN_RF_FREQUENCY            922400000
@@ -241,17 +235,14 @@
 #undef AS923_RX_MAX_DATARATE
 #define AS923_RX_MAX_DATARATE             DR_5
 
-#undef AS923_DEFAULT_MAX_EIRP
-#define AS923_DEFAULT_MAX_EIRP            13.0f
-
 /*!
  * Enable duty cycle enforcement
  */
 #undef AS923_DUTY_CYCLE_ENABLED
 #define AS923_DUTY_CYCLE_ENABLED          1
 
 /*!
- * STD-T108 Ver1.4 requires a carrier sense time of at least 128 us on channels 37 to 61
+ * STD-T108 Ver1.4 requires a carrier sense time of at least 128 us on channels 33 to 61
  */
 #undef AS923_CARRIER_SENSE_TIME
 #define AS923_CARRIER_SENSE_TIME          1
@@ -562,10 +553,10 @@ void RegionAS923SetBandTxDone( SetBandTxDoneParams_t* txDone )
 #if defined( REGION_AS923 )
 #if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x01010003 ))
     RegionCommonSetBandTxDone( &RegionNvmGroup1->Bands[RegionNvmGroup2->Channels[txDone->Channel].Band],
-                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceStartUp );
+                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceTxBackoffRefTime );
 #elif (defined( REGION_VERSION ) && (( REGION_VERSION == 0x02010001 ) || ( REGION_VERSION == 0x02010003 )))
     RegionCommonSetBandTxDone( &RegionBands[RegionNvmGroup2->Channels[txDone->Channel].Band],
-                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceStartUp );
+                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceTxBackoffRefTime );
 #endif /* REGION_VERSION */
 #endif /* REGION_AS923 */
 }
@@ -617,7 +608,7 @@ void RegionAS923InitDefaults( InitDefaultsParams_t* params )
 
 #if ( ( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP ) || \
 	( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP_CH24_CH38_LBT ) || \
-      ( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP_CH37_CH61_LBT_DC ) )
+      ( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP_CH33_CH61_LBT_DC ) )
             RegionNvmGroup2->RssiFreeThreshold = AS923_RSSI_FREE_TH;
             RegionNvmGroup2->CarrierSenseTime = AS923_CARRIER_SENSE_TIME;
 #endif
@@ -1023,7 +1014,6 @@ uint8_t RegionAS923RxParamSetupReq( RxParamSetupReqParams_t* rxParamSetupReq )
 {
     uint8_t status = 0x07;
 #if defined( REGION_AS923 )
-
     // Verify radio frequency
     if( VerifyRfFreq( rxParamSetupReq->Frequency ) == false )
     {
@@ -1181,7 +1171,7 @@ LoRaMacStatus_t RegionAS923NextChannel( NextChanParams_t* nextChanParams, uint8_
     identifyChannelsParam.DutyCycleEnabled = nextChanParams->DutyCycleEnabled;
     identifyChannelsParam.MaxBands = AS923_MAX_NB_BANDS;
 
-    identifyChannelsParam.ElapsedTimeSinceStartUp = nextChanParams->ElapsedTimeSinceStartUp;
+    identifyChannelsParam.ElapsedTimeSinceTxBackoffRefTime = nextChanParams->ElapsedTimeSinceTxBackoffRefTime;
     identifyChannelsParam.LastTxIsJoinRequest = nextChanParams->LastTxIsJoinRequest;
     identifyChannelsParam.ExpectedTimeOnAir = GetTimeOnAir( nextChanParams->Datarate, nextChanParams->PktLen );
 
@@ -1194,7 +1184,7 @@ LoRaMacStatus_t RegionAS923NextChannel( NextChanParams_t* nextChanParams, uint8_
     {
 #if (( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP ) || \
 	( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP_CH24_CH38_LBT ) || \
-      ( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP_CH37_CH61_LBT_DC ) )
+      ( REGION_AS923_DEFAULT_CHANNEL_PLAN == CHANNEL_PLAN_GROUP_AS923_1_JP_CH33_CH61_LBT_DC ) )
         // Executes the LBT algorithm when operating in Japan
         uint8_t channelNext = 0;
 

src/STM32CubeWL/LoRaWAN/Mac/Region/RegionAS923.h

@@ -99,10 +99,10 @@ extern "C"
 #define CHANNEL_PLAN_GROUP_AS923_1_JP_CH24_CH38_DC  6
 
 /*!
- * Channel plan group AS923-1 for Japan - channels 37 to 61 Listen Before Talk + Duty Cycle
+ * Channel plan group AS923-1 for Japan - channels 33 to 61 Listen Before Talk + Duty Cycle
  * AS923_FREQ_OFFSET = 0
  */
-#define CHANNEL_PLAN_GROUP_AS923_1_JP_CH37_CH61_LBT_DC 7
+#define CHANNEL_PLAN_GROUP_AS923_1_JP_CH33_CH61_LBT_DC 7
 #endif
 
 /*!

src/STM32CubeWL/LoRaWAN/Mac/Region/RegionAU915.c

@@ -376,10 +376,10 @@ void RegionAU915SetBandTxDone( SetBandTxDoneParams_t* txDone )
 #if defined( REGION_AU915 )
 #if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x01010003 ))
     RegionCommonSetBandTxDone( &RegionNvmGroup1->Bands[RegionNvmGroup2->Channels[txDone->Channel].Band],
-                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceStartUp );
+                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceTxBackoffRefTime );
 #elif (defined( REGION_VERSION ) && (( REGION_VERSION == 0x02010001 ) || ( REGION_VERSION == 0x02010003 )))
     RegionCommonSetBandTxDone( &RegionBands[RegionNvmGroup2->Channels[txDone->Channel].Band],
-                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceStartUp );
+                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceTxBackoffRefTime );
 #endif /* REGION_VERSION */
 #endif /* REGION_AU915 */
 }
@@ -976,7 +976,7 @@ LoRaMacStatus_t RegionAU915NextChannel( NextChanParams_t* nextChanParams, uint8_
     identifyChannelsParam.DutyCycleEnabled = nextChanParams->DutyCycleEnabled;
     identifyChannelsParam.MaxBands = AU915_MAX_NB_BANDS;
 
-    identifyChannelsParam.ElapsedTimeSinceStartUp = nextChanParams->ElapsedTimeSinceStartUp;
+    identifyChannelsParam.ElapsedTimeSinceTxBackoffRefTime = nextChanParams->ElapsedTimeSinceTxBackoffRefTime;
     identifyChannelsParam.LastTxIsJoinRequest = nextChanParams->LastTxIsJoinRequest;
     identifyChannelsParam.ExpectedTimeOnAir = GetTimeOnAir( nextChanParams->Datarate, nextChanParams->PktLen );
 

src/STM32CubeWL/LoRaWAN/Mac/Region/RegionCN470.c

@@ -663,10 +663,10 @@ void RegionCN470SetBandTxDone( SetBandTxDoneParams_t* txDone )
 #if defined( REGION_CN470 )
 #if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x01010003 ))
     RegionCommonSetBandTxDone( &RegionNvmGroup1->Bands[RegionNvmGroup2->Channels[txDone->Channel].Band],
-                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceStartUp );
+                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceTxBackoffRefTime );
 #elif (defined( REGION_VERSION ) && (( REGION_VERSION == 0x02010001 ) || ( REGION_VERSION == 0x02010003 )))
     RegionCommonSetBandTxDone( &RegionBands[RegionNvmGroup2->Channels[txDone->Channel].Band],
-                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceStartUp );
+                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceTxBackoffRefTime );
 #endif /* REGION_VERSION */
 #endif /* REGION_CN470 */
 }
@@ -1321,7 +1321,7 @@ LoRaMacStatus_t RegionCN470NextChannel( NextChanParams_t* nextChanParams, uint8_
     identifyChannelsParam.DutyCycleEnabled = nextChanParams->DutyCycleEnabled;
     identifyChannelsParam.MaxBands = CN470_MAX_NB_BANDS;
 
-    identifyChannelsParam.ElapsedTimeSinceStartUp = nextChanParams->ElapsedTimeSinceStartUp;
+    identifyChannelsParam.ElapsedTimeSinceTxBackoffRefTime = nextChanParams->ElapsedTimeSinceTxBackoffRefTime;
     identifyChannelsParam.LastTxIsJoinRequest = nextChanParams->LastTxIsJoinRequest;
     identifyChannelsParam.ExpectedTimeOnAir = GetTimeOnAir( nextChanParams->Datarate, nextChanParams->PktLen );
 

src/STM32CubeWL/LoRaWAN/Mac/Region/RegionCN779.c

@@ -315,10 +315,10 @@ void RegionCN779SetBandTxDone( SetBandTxDoneParams_t* txDone )
 #if defined( REGION_CN779 )
 #if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x01010003 ))
     RegionCommonSetBandTxDone( &RegionNvmGroup1->Bands[RegionNvmGroup2->Channels[txDone->Channel].Band],
-                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceStartUp );
+                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceTxBackoffRefTime );
 #elif (defined( REGION_VERSION ) && (( REGION_VERSION == 0x02010001 ) || ( REGION_VERSION == 0x02010003 )))
     RegionCommonSetBandTxDone( &RegionBands[RegionNvmGroup2->Channels[txDone->Channel].Band],
-                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceStartUp );
+                               txDone->LastTxAirTime, txDone->Joined, txDone->ElapsedTimeSinceTxBackoffRefTime );
 #endif /* REGION_VERSION */
 #endif /* REGION_CN779 */
 }
@@ -905,7 +905,7 @@ LoRaMacStatus_t RegionCN779NextChannel( NextChanParams_t* nextChanParams, uint8_
     identifyChannelsParam.DutyCycleEnabled = nextChanParams->DutyCycleEnabled;
     identifyChannelsParam.MaxBands = CN779_MAX_NB_BANDS;
 
-    identifyChannelsParam.ElapsedTimeSinceStartUp = nextChanParams->ElapsedTimeSinceStartUp;
+    identifyChannelsParam.ElapsedTimeSinceTxBackoffRefTime = nextChanParams->ElapsedTimeSinceTxBackoffRefTime;
     identifyChannelsParam.LastTxIsJoinRequest = nextChanParams->LastTxIsJoinRequest;
     identifyChannelsParam.ExpectedTimeOnAir = GetTimeOnAir( nextChanParams->Datarate, nextChanParams->PktLen );
 

src/STM32CubeWL/LoRaWAN/Mac/Region/RegionCommon.c

@@ -65,7 +65,7 @@
  *         defined duty-cycle restrictions. In order to ensure that these restrictions never get violated we changed the
  *         default duty cycle observation time period to 1/2 hour (1800000 ms).
  */
-#if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))
+#if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 )) 
 #define DUTY_CYCLE_TIME_PERIOD              3600000
 #else
 #define DUTY_CYCLE_TIME_PERIOD              1800000
@@ -107,7 +107,7 @@ static uint16_t GetDutyCycle( Band_t* band, bool joined, SysTime_t elapsedTimeSi
 
     if( joined == false )
     {
-#if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))
+#if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))  
         uint16_t joinDutyCycle = BACKOFF_DC_1_HOUR;
 #else
         uint16_t joinDutyCycle = BACKOFF_DC_24_HOURS;
@@ -151,7 +151,7 @@ static uint16_t SetMaxTimeCredits( Band_t* band, bool joined, SysTime_t elapsedT
     if( joined == false )
     {
 #if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))
-        if( elapsedTimeSinceStartup.Seconds < BACKOFF_DUTY_CYCLE_1_HOUR_IN_S )
+		if( elapsedTimeSinceStartup.Seconds < BACKOFF_DUTY_CYCLE_1_HOUR_IN_S )
         {
             maxCredits = DUTY_CYCLE_TIME_PERIOD;
         }
@@ -164,8 +164,8 @@ static uint16_t SetMaxTimeCredits( Band_t* band, bool joined, SysTime_t elapsedT
             maxCredits = DUTY_CYCLE_TIME_PERIOD_JOIN_BACKOFF_24H;
         }
 #else
-        TimerTime_t elapsedTime = SysTimeToMs( elapsedTimeSinceStartup );
-        SysTime_t timeDiff = { 0 };
+    	TimerTime_t elapsedTime = SysTimeToMs( elapsedTimeSinceStartup );
+    	SysTime_t timeDiff = { 0 };
         if( dutyCycle == BACKOFF_DC_1_HOUR )
         {
             maxCredits = DUTY_CYCLE_TIME_PERIOD;
@@ -218,7 +218,7 @@ static uint16_t SetMaxTimeCredits( Band_t* band, bool joined, SysTime_t elapsedT
     {
         band->TimeCredits = maxCredits;
     }
-#endif
+#endif 
 
     // Setup the maximum allowed credits. We can assign them
     // safely all the time.
@@ -228,7 +228,7 @@ static uint16_t SetMaxTimeCredits( Band_t* band, bool joined, SysTime_t elapsedT
 }
 
 
-#if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))
+#if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))  
 static uint16_t UpdateTimeCredits( Band_t* band, bool joined, bool dutyCycleEnabled,
                                    bool lastTxIsJoinRequest, SysTime_t elapsedTimeSinceStartup,
                                    TimerTime_t currentTime, TimerTime_t lastBandUpdateTime )
@@ -456,7 +456,7 @@ TimerTime_t RegionCommonUpdateBandTimeOff( bool joined, Band_t* bands,
                 // We calculate the minTimeToWait among the bands which are not
                 // ready for transmission and which are potentially available
                 // for a transmission in the future.
-#if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))
+#if (defined( REGION_VERSION ) && ( REGION_VERSION == 0x02010003 ))  
                 TimerTime_t observationTimeDiff = 0;
                 if( bands[i].LastMaxCreditAssignTime >= elapsedTime )
                 {
@@ -727,7 +727,7 @@ LoRaMacStatus_t RegionCommonIdentifyChannels( RegionCommonIdentifyChannelsParam_
                                                       identifyChannelsParam->MaxBands,
                                                       identifyChannelsParam->DutyCycleEnabled,
                                                       identifyChannelsParam->LastTxIsJoinRequest,
-                                                      identifyChannelsParam->ElapsedTimeSinceStartUp,
+                                                      identifyChannelsParam->ElapsedTimeSinceTxBackoffRefTime,
                                                       identifyChannelsParam->ExpectedTimeOnAir );
 
         RegionCommonCountNbOfEnabledChannels( identifyChannelsParam->CountNbOfEnabledChannelsParam, enabledChannels,

src/STM32CubeWL/LoRaWAN/Mac/Region/RegionCommon.h

@@ -307,7 +307,7 @@ typedef struct sRegionCommonIdentifyChannelsParam
     /*!
      * Elapsed time since the start of the node.
      */
-    SysTime_t ElapsedTimeSinceStartUp;
+    SysTime_t ElapsedTimeSinceTxBackoffRefTime;
     /*!
      * Joined Set to true, if the last uplink was a join request
      */