moved retrieval of host mac from flash to seperate function

client/client/lib/espnow/src/espnow.cpp

@@ -41,15 +41,7 @@ esp_err_t espnow_setup(){
         return result; // not sure about this
     }
     
-    preferences.begin("config", false);
-    if(preferences.isKey("host")){
-        preferences.getBytes("host", hostInfo.peer_addr, sizeof(hostInfo.peer_addr));
-        Serial.println("Mac used from flash");
-    }
-    else{
-        memcpy(hostInfo.peer_addr, BROADCAST_MAC, sizeof(hostInfo.peer_addr));
-    }
-    preferences.end(); // check if there is a host saved in flash mem, broadcast otherwise
+    get_host_mac(hostInfo.peer_addr); // check if there is a host saved in flash mem, broadcast otherwise
 
     hostInfo.channel = 0;
     hostInfo.encrypt = 0;
@@ -92,15 +84,8 @@ esp_err_t Message::send(){
 Message :: Message(){
     data = (data_struct*) malloc(sizeof(data_struct));
     
-    preferences.begin("config", true);
-    if(preferences.isKey("host")){
-        preferences.getBytes("host", recipient, sizeof(uint8_t) * 6);
-    }
-    else{
-        memcpy(recipient, BROADCAST_MAC, sizeof(BROADCAST_MAC));
-        Serial.println("backup mac used");
-    }
-    preferences.end();
+    // check for existing host mac address, use broadcast otherwise
+    get_host_mac(recipient);
 
     data->amountData = 0;
     data->timestamp = rtc.getMillis(); // I am assuming we are not sending data from Unix Epoch
@@ -108,18 +93,21 @@ Message :: Message(){
 
 Message :: Message(data_struct old_data){
     memcpy(data, &old_data, sizeof(data));
+    get_host_mac(recipient);
+}
+
+Message :: ~Message(){
+    free((void*) data);
+}
 
+void get_host_mac(uint8_t* destination){
     preferences.begin("config", true);
     if(preferences.isKey("host")){
-        preferences.getBytes("host", recipient, sizeof(uint8_t) * 6);
+        preferences.getBytes("host", destination, sizeof(uint8_t) * 6);
     }
     else{
-        memcpy(recipient, BROADCAST_MAC, sizeof(BROADCAST_MAC));
+        memcpy(destination, BROADCAST_MAC, sizeof(BROADCAST_MAC));
         Serial.println("backup mac used");
     }
     preferences.end();
-}
-
-Message :: ~Message(){
-    free((void*) data);
 }
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