Diff: LoRaMac.cpp

Branch:

v4.2.0

Revision:

24:69286d8b3962

Parent:

23:80965acdd311

Child:

25:8d0a79bd607b

--- a/LoRaMac.cpp	Wed Oct 12 19:26:37 2016 +0000
+++ b/LoRaMac.cpp	Thu Oct 13 19:40:56 2016 +0000
@@ -2280,62 +2280,65 @@
     bool adrAckReq = false;
     int8_t datarate = ChannelsDatarate;
     int8_t txpower  = ChannelsTxPower;
-
+    
     if( adrEnabled == true )
     {
         /* Request ADR Ack Request (including at lowest available datarate) */
         adrAckReq = AdrAckCounter >= ADR_ACK_LIMIT ? true : false;
 
-        if( AdrAckCounter > (ADR_ACK_LIMIT + ADR_ACK_DELAY) )
+        if( AdrAckCounter >= (ADR_ACK_LIMIT + ADR_ACK_DELAY) )
         {
             // Step up power
             txpower = LORAMAC_DEFAULT_TX_POWER;
 
-            // isTx=true when preparing to transmit the next frame
-            if(isTx == true)
-                AdrAckCounter = 0;
-
-#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
-            if( datarate > LORAMAC_TX_MIN_DATARATE )
-            {
-                datarate--;
-            }
-            if( datarate == LORAMAC_TX_MIN_DATARATE )
-            {
-                if( isTx == true )
-                {
-                    // Re-enable default channels LC1, LC2, LC3
-                    ChannelsMask[0] = ChannelsMask[0] | ( LC( 1 ) + LC( 2 ) + LC( 3 ) );
-                }
-            }
-#elif defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
-            if( datarate > LORAMAC_TX_MIN_DATARATE ) 
+            if( ( AdrAckCounter % ADR_ACK_DELAY ) == 0 )
             {
-                datarate--;
-            }
-            else if( isTx == true )
-            {
+#if defined( USE_BAND_433 ) || defined( USE_BAND_780 ) || defined( USE_BAND_868 )
+                if( datarate > LORAMAC_TX_MIN_DATARATE )
+                {
+                	datarate--;
+                }
+
+                if( datarate == LORAMAC_TX_MIN_DATARATE )
+                {
+                	if( isTx == true )
+                	{
+                		// Re-enable default channels LC1, LC2, LC3
+                		ChannelsMask[0] = ChannelsMask[0] | ( LC( 1 ) + LC( 2 ) + LC( 3 ) );
+                	}
+                }
+#elif defined( USE_BAND_915 ) || defined( USE_BAND_915_HYBRID )
+                if( datarate > LORAMAC_TX_MIN_DATARATE )
+                {
+                	if ( datarate == DR_8)
+                		datarate = DR_4;
+                	else
+                		datarate--;
+                }
+                else if( isTx == true )
+                {
 #if defined( USE_BAND_915 )
-                // Re-enable default channels
-                ChannelsMask[0] = 0xFFFF;
-                ChannelsMask[1] = 0xFFFF;
-                ChannelsMask[2] = 0xFFFF;
-                ChannelsMask[3] = 0xFFFF;
-                ChannelsMask[4] = 0x00FF;
-                ChannelsMask[5] = 0x0000;
+                	// Re-enable default channels
+                	ChannelsMask[0] = 0xFFFF;
+                	ChannelsMask[1] = 0xFFFF;
+                	ChannelsMask[2] = 0xFFFF;
+                	ChannelsMask[3] = 0xFFFF;
+                	ChannelsMask[4] = 0x00FF;
+                	ChannelsMask[5] = 0x0000;
 #else // defined( USE_BAND_915_HYBRID )
-                // Re-enable default channels
-                ChannelsMask[0] = 0x00FF;
-                ChannelsMask[1] = 0x0000;
-                ChannelsMask[2] = 0x0000;
-                ChannelsMask[3] = 0x0000;
-                ChannelsMask[4] = 0x0001;
-                ChannelsMask[5] = 0x0000;
+                	// Re-enable default channels
+                	ChannelsMask[0] = 0x00FF;
+                	ChannelsMask[1] = 0x0000;
+                	ChannelsMask[2] = 0x0000;
+                	ChannelsMask[3] = 0x0000;
+                	ChannelsMask[4] = 0x0001;
+                	ChannelsMask[5] = 0x0000;
 #endif
-            }
+                }
 #else
 #error "Please define a frequency band in the compiler options."
 #endif
+            }
         }
     }
 
@@ -2346,6 +2349,7 @@
         *txpowerOut = txpower;
 
     return adrAckReq;
+    
 }
 
 static LoRaMacStatus_t AddMacCommand( uint8_t cmd, uint8_t p1, uint8_t p2 )