*add service data logging

df_datalink_sp/src/networking/link_layer/service.c

@@ -141,6 +141,9 @@ static int32_t Service_Packing(L2_INST *instPtr, L2_FRAME_TYPE type, uint8_t dst
 			DBG_ERROR("Fail to append CRC...\n");
 			return Status;
 		}
+
+		memcpy(instPtr->serviceFSM->txLog.data, buff, L2_SVC_PACK_LEN);
+		instPtr->serviceFSM->txLog.dataId = dataId;
 		break;
 	}
 	default:
@@ -295,6 +298,10 @@ int32_t L2_Service_PktHandler(L2_INST *instPtr, uint8_t *msg)
 			}
 		}
 
+		// Logging
+		memcpy(instPtr->serviceFSM->rxLog.data, msg, L2_SVC_PACK_LEN);
+		instPtr->serviceFSM->rxLog.dataId = dataId;
+		
 #ifdef DATALINK_ENABLE_AUTOTIMESYNC
 		// Implement a auto time sync.
 		if (L2_GetNodeType(instPtr) != L2_NODE_HEAD)