diff --git a/src/lorawan.cpp b/src/lorawan.cpp
index 31448f08..b8cbc1b4 100644
--- a/src/lorawan.cpp
+++ b/src/lorawan.cpp
@@ -21,6 +21,23 @@ static const char TAG[] = "lora";
 QueueHandle_t LoraSendQueue;
 TaskHandle_t lmicTask = NULL, lorasendTask = NULL;
 
+// table of LORAWAN MAC messages sent by the network to the device
+// format: opcode, cmdname (max 19 chars), #bytes params
+// source: LoRaWAN 1.1 Specification (October 11, 2017)
+
+static mac_t table[] = {
+    {0x01, "ResetConf", 1},          {0x02, "LinkCheckAns", 2},
+    {0x03, "LinkADRReq", 4},         {0x04, "DutyCycleReq", 1},
+    {0x05, "RXParamSetupReq", 4},    {0x06, "DevStatusReq", 0},
+    {0x07, "NewChannelReq", 5},      {0x08, "RxTimingSetupReq", 1},
+    {0x09, "TxParamSetupReq", 1},    {0x0A, "DlChannelReq", 4},
+    {0x0B, "RekeyConf", 1},          {0x0C, "ADRParamSetupReq", 1},
+    {0x0D, "DeviceTimeAns", 5},      {0x0E, "ForceRejoinReq", 2},
+    {0x0F, "RejoinParamSetupReq", 1}};
+
+static const uint8_t cmdtablesize =
+    sizeof(table) / sizeof(table[0]); // number of commands in MAC table
+
 class MyHalConfig_t : public Arduino_LMIC::HalConfiguration_t {
 
 public:
@@ -545,10 +562,6 @@ void lmictask(void *pvParameters) {
 void myRxCallback(void *pUserData, uint8_t port, const uint8_t *pMsg,
                   size_t nMsg) {
 
-  // tell the compiler that pUserData is required by the API, but we don't
-  // happen to use it.
-  LMIC_API_PARAMETER(pUserData);
-
   // display type of received data
   if (nMsg)
     ESP_LOGI(TAG, "Received %u bytes of payload on port %u", nMsg, port);
@@ -560,7 +573,7 @@ void myRxCallback(void *pUserData, uint8_t port, const uint8_t *pMsg,
   if (port != MACPORT)
     --nMac;
   if (nMac) {
-    ESP_LOGI(TAG, "Received %u MAC messages:", nMac);
+    ESP_LOGI(TAG, "Received %u byte MAC message", nMac);
     // NOT WORKING YET
     // whe need to strip some protocol overhead from LMIC.frame to unwrap the
     // MAC command
@@ -582,9 +595,10 @@ void myRxCallback(void *pUserData, uint8_t port, const uint8_t *pMsg,
 
 #if (TIME_SYNC_LORASERVER)
     // valid timesync answer -> call timesync processor
-    if ((port >= TIMEANSWERPORT_MIN) && (port <= TIMEANSWERPORT_MAX))
+    if ((port >= TIMEANSWERPORT_MIN) && (port <= TIMEANSWERPORT_MAX)) {
       recv_timesync_ans(port, pMsg, nMsg);
-    break;
+      break;
+    }
 #endif
 
     // unknown port -> display info
@@ -595,34 +609,10 @@ void myRxCallback(void *pUserData, uint8_t port, const uint8_t *pMsg,
 
 // transmit complete message handler
 void myTxCallback(void *pUserData, int fSuccess) {
-
   /* currently no code here */
-
-  // tell the compiler that pUserData is required by the API, but we don't
-  // happen to use it.
-  LMIC_API_PARAMETER(pUserData);
 }
 
-// LORAWAN MAC interpreter
-
-// table of LORAWAN MAC messages sent by the network to the device
-// format: opcode, cmdname (max 19 chars), #bytes params
-// source: LoRaWAN 1.1 Specification (October 11, 2017)
-
-static mac_t table[] = {
-    {0x01, "ResetConf", 1},          {0x02, "LinkCheckAns", 2},
-    {0x03, "LinkADRReq", 4},         {0x04, "DutyCycleReq", 1},
-    {0x05, "RXParamSetupReq", 4},    {0x06, "DevStatusReq", 0},
-    {0x07, "NewChannelReq", 5},      {0x08, "RxTimingSetupReq", 1},
-    {0x09, "TxParamSetupReq", 1},    {0x0A, "DlChannelReq", 4},
-    {0x0B, "RekeyConf", 1},          {0x0C, "ADRParamSetupReq", 1},
-    {0x0D, "DeviceTimeAns", 5},      {0x0E, "ForceRejoinReq", 2},
-    {0x0F, "RejoinParamSetupReq", 1}};
-
-static const uint8_t cmdtablesize =
-    sizeof(table) / sizeof(table[0]); // number of commands in command table
-
-// decode mac message
+// decode LORAWAN MAC message
 void mac_decode(const uint8_t cmd[], const uint8_t cmdlength) {
 
   if (!cmdlength)
@@ -640,15 +630,15 @@ void mac_decode(const uint8_t cmd[], const uint8_t cmdlength) {
           memmove(foundcmd, cmd + cursor,
                   table[i].params); // strip opcode from cmd array
           cursor += table[i].params;
-          ESP_LOGI(TAG, "Network command %s", table[i].cmdname);
+          ESP_LOGD(TAG, "Network command %s", table[i].cmdname);
         } else
-          ESP_LOGI(TAG, "MAC message 0x%02X with missing parameter(s)",
+          ESP_LOGD(TAG, "MAC message 0x%02X with missing parameter(s)",
                    table[i].opcode);
         break;   // command found -> exit table lookup loop
       }          // end of command validation
     }            // end of command table lookup loop
     if (i < 0) { // command not found -> skip it
-      ESP_LOGI(TAG, "Unknown MAC message 0x%02X", cmd[cursor]);
+      ESP_LOGD(TAG, "Unknown MAC message 0x%02X", cmd[cursor]);
       cursor++;
     }
   } // command parsing loop