diff --git a/example/daemon/l2cap_throughput.c b/example/daemon/l2cap_throughput.c
index f91b7fce4..2e65a112e 100644
--- a/example/daemon/l2cap_throughput.c
+++ b/example/daemon/l2cap_throughput.c
@@ -195,7 +195,7 @@ void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint
 int main (int argc, const char * argv[]){
     // handle remote addr
     if (argc > 1){
-        if (sscan_bd_addr((uint8_t *)argv[1], addr)){
+        if (sscanf_bd_addr((uint8_t *)argv[1], addr)){
             serverMode = 0;
             prepare_packet();
         }
diff --git a/example/daemon/rfcomm_cat.c b/example/daemon/rfcomm_cat.c
index 946682431..00bff82c9 100644
--- a/example/daemon/rfcomm_cat.c
+++ b/example/daemon/rfcomm_cat.c
@@ -138,7 +138,7 @@ int main (int argc, const char * argv[]){
 	while (arg < argc) {
 		if(!strcmp(argv[arg], "-a") || !strcmp(argv[arg], "--address")){
 			arg++;
-			if(arg >= argc || !sscan_bd_addr((uint8_t *)argv[arg], addr)){
+			if(arg >= argc || !sscanf_bd_addr((uint8_t *)argv[arg], addr)){
 				usage(argv[0]);
 				return 1;
 			}
diff --git a/example/embedded/gatt_battery_query.c b/example/embedded/gatt_battery_query.c
index a21469516..1c6bcac9b 100644
--- a/example/embedded/gatt_battery_query.c
+++ b/example/embedded/gatt_battery_query.c
@@ -297,7 +297,7 @@ int btstack_main(int argc, const char * argv[]){
     while (arg < argc) {
 		if(!strcmp(argv[arg], "-a") || !strcmp(argv[arg], "--address")){
 			arg++;
-			cmdline_addr_found = sscan_bd_addr((uint8_t *)argv[arg], cmdline_addr);
+			cmdline_addr_found = sscanf_bd_addr((uint8_t *)argv[arg], cmdline_addr);
             arg++;
             continue;
         }
diff --git a/example/embedded/gatt_browser.c b/example/embedded/gatt_browser.c
index d1f978215..c42e2fdac 100644
--- a/example/embedded/gatt_browser.c
+++ b/example/embedded/gatt_browser.c
@@ -315,7 +315,7 @@ int btstack_main(int argc, const char * argv[]){
     while (arg < argc) {
 		if(!strcmp(argv[arg], "-a") || !strcmp(argv[arg], "--address")){
 			arg++;
-			cmdline_addr_found = sscan_bd_addr((uint8_t *)argv[arg], cmdline_addr);
+			cmdline_addr_found = sscanf_bd_addr((uint8_t *)argv[arg], cmdline_addr);
             arg++;
             continue;
         }
diff --git a/port/wiced/main.c b/port/wiced/main.c
index 85e07f259..efce54eb4 100644
--- a/port/wiced/main.c
+++ b/port/wiced/main.c
@@ -58,7 +58,7 @@ static const hci_transport_config_uart_t hci_transport_config_uart = {
 
 extern int btstack_main(void);
 
-static int main_sscan_bd_addr(const char * addr_string, bd_addr_t addr){
+static int main_sscanf_bd_addr(const char * addr_string, bd_addr_t addr){
     unsigned int bd_addr_buffer[BD_ADDR_LEN];  //for sscanf, integer needed
     // reset result buffer
     memset(bd_addr_buffer, 0, sizeof(bd_addr_buffer));
@@ -99,7 +99,7 @@ void application_start(void){
 
     // use WIFI Mac address + 1 for Bluetooth
     bd_addr_t dummy = { 1,2,3,4,5,6};
-    main_sscan_bd_addr(&wifi_mac_address[8], dummy);
+    main_sscanf_bd_addr(&wifi_mac_address[8], dummy);
     dummy[5]++;
     hci_set_bd_addr(dummy);
     
diff --git a/src/btstack_util.c b/src/btstack_util.c
index 869dd080b..ac06ec8b1 100644
--- a/src/btstack_util.c
+++ b/src/btstack_util.c
@@ -49,6 +49,36 @@
 #include <string.h>
 #include "btstack_debug.h"
 
+
+/**
+ * @brief Compare two Bluetooth addresses
+ * @param a
+ * @param b
+ * @return true if equal
+ */
+int bd_addr_cmp(bd_addr_t a, bd_addr_t b){
+    return memcmp(a,b, BD_ADDR_LEN);
+}
+
+/**
+ * @brief Copy Bluetooth address
+ * @param dest
+ * @param src
+ */
+void bd_addr_copy(bd_addr_t dest, bd_addr_t src){
+    memcpy(dest,src,BD_ADDR_LEN);
+}
+
+uint16_t little_endian_read_16(const uint8_t * buffer, int pos){
+    return ((uint16_t) buffer[pos]) | (((uint16_t)buffer[(pos)+1]) << 8);
+}
+uint32_t little_endian_read_24(const uint8_t * buffer, int pos){
+    return ((uint32_t) buffer[pos]) | (((uint32_t)buffer[(pos)+1]) << 8) | (((uint32_t)buffer[(pos)+2]) << 16);
+}
+uint32_t little_endian_read_32(const uint8_t * buffer, int pos){
+    return ((uint32_t) buffer[pos]) | (((uint32_t)buffer[(pos)+1]) << 8) | (((uint32_t)buffer[(pos)+2]) << 16) | (((uint32_t) buffer[(pos)+3]) << 24);
+}
+
 void little_endian_store_16(uint8_t *buffer, uint16_t pos, uint16_t value){
     buffer[pos++] = value;
     buffer[pos++] = value >> 8;
@@ -61,6 +91,14 @@ void little_endian_store_32(uint8_t *buffer, uint16_t pos, uint32_t value){
     buffer[pos++] = value >> 24;
 }
 
+uint32_t big_endian_read_16( const uint8_t * buffer, int pos) {
+    return ((uint16_t) buffer[(pos)+1]) | (((uint16_t)buffer[ pos   ]) << 8);
+}
+
+uint32_t big_endian_read_32( const uint8_t * buffer, int pos) {
+    return ((uint32_t) buffer[(pos)+3]) | (((uint32_t)buffer[(pos)+2]) << 8) | (((uint32_t)buffer[(pos)+1]) << 16) | (((uint32_t) buffer[pos]) << 24);
+}
+
 void big_endian_store_16(uint8_t *buffer, uint16_t pos, uint16_t value){
     buffer[pos++] = value >> 8;
     buffer[pos++] = value;
@@ -73,6 +111,7 @@ void big_endian_store_32(uint8_t *buffer, uint16_t pos, uint32_t value){
     buffer[pos++] = value;
 }
 
+
 void bt_flip_addr(bd_addr_t dest, bd_addr_t src){
     dest[0] = src[5];
     dest[1] = src[4];
@@ -222,7 +261,7 @@ char * bd_addr_to_str(bd_addr_t addr){
     return (char *) bd_addr_to_str_buffer;
 }
 
-int sscan_bd_addr(uint8_t * addr_string, bd_addr_t addr){
+int sscanf_bd_addr(uint8_t * addr_string, bd_addr_t addr){
 	unsigned int bd_addr_buffer[BD_ADDR_LEN];  //for sscanf, integer needed
 	// reset result buffer
     memset(bd_addr_buffer, 0, sizeof(bd_addr_buffer));
diff --git a/src/btstack_util.h b/src/btstack_util.h
index b37162bb2..c19b97eb7 100644
--- a/src/btstack_util.h
+++ b/src/btstack_util.h
@@ -58,6 +58,11 @@ extern "C" {
 #include "btstack_defines.h"
 #include "btstack_linked_list.h"
 	
+// hack: compilation with the android ndk causes an error as there's a swap64 macro
+#ifdef swap64
+#undef swap64
+#endif
+
 // will be moved to daemon/btstack_device_name_db.h
 
 /**
@@ -65,37 +70,46 @@ extern "C" {
  */
 #define DEVICE_NAME_LEN 248
 typedef uint8_t device_name_t[DEVICE_NAME_LEN+1]; 
+
+
 	
-// helper for little endian format
-static inline uint16_t little_endian_read_16(const uint8_t * buffer, int pos){
-	return ((uint16_t) buffer[pos]) | (((uint16_t)buffer[(pos)+1]) << 8);
-}
-static inline uint32_t little_endian_read_24(const uint8_t * buffer, int pos){
-	return ((uint32_t) buffer[pos]) | (((uint32_t)buffer[(pos)+1]) << 8) | (((uint32_t)buffer[(pos)+2]) << 16);
-}
-static inline uint32_t little_endian_read_32(const uint8_t * buffer, int pos){
-	return ((uint32_t) buffer[pos]) | (((uint32_t)buffer[(pos)+1]) << 8) | (((uint32_t)buffer[(pos)+2]) << 16) | (((uint32_t) buffer[(pos)+3]) << 24);
-}
-void little_endian_store_16(uint8_t *buffer, uint16_t pos, uint16_t value);
-void little_endian_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
+/** 
+ * @brief Read 16/24/32 bit little endian value from buffer
+ * @param buffer
+ * @param position in buffer
+ * @return value
+ */
+uint16_t little_endian_read_16(const uint8_t * buffer, int position);
+uint32_t little_endian_read_24(const uint8_t * buffer, int position);
+uint32_t little_endian_read_32(const uint8_t * buffer, int position);
 
-// helper for big endian format
-static inline uint32_t big_endian_read_16( const uint8_t * buffer, int pos) {
-	return ((uint16_t) buffer[(pos)+1]) | (((uint16_t)buffer[ pos   ]) << 8);
-}
+/** 
+ * @brief Write 16/32 bit little endian value into buffer
+ * @param buffer
+ * @param position in buffer
+ * @param value
+ */
+void little_endian_store_16(uint8_t *buffer, uint16_t position, uint16_t value);
+void little_endian_store_32(uint8_t *buffer, uint16_t position, uint32_t value);
 
-static inline uint32_t big_endian_read_32( const uint8_t * buffer, int pos) {
-	return ((uint32_t) buffer[(pos)+3]) | (((uint32_t)buffer[(pos)+2]) << 8) | (((uint32_t)buffer[(pos)+1]) << 16) | (((uint32_t) buffer[pos]) << 24);
-}
+/** 
+ * @brief Read 16/24/32 bit big endian value from buffer
+ * @param buffer
+ * @param position in buffer
+ * @return value
+ */
+uint32_t big_endian_read_16( const uint8_t * buffer, int pos);
+uint32_t big_endian_read_32( const uint8_t * buffer, int pos);
 
+/** 
+ * @brief Write 16/32 bit big endian value into buffer
+ * @param buffer
+ * @param position in buffer
+ * @param value
+ */
 void big_endian_store_16(uint8_t *buffer, uint16_t pos, uint16_t value);
 void big_endian_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
 
-// hack: compilation with the android ndk causes an error as there's a swap64 macro
-#ifdef swap64
-#undef swap64
-#endif
-
 /**
  * @brief Copy from source to destination and reverse byte order
  */
@@ -105,7 +119,6 @@ void swap48 (const uint8_t *src, uint8_t * dst);
 void swap56 (const uint8_t *src, uint8_t * dst);
 void swap64 (const uint8_t *src, uint8_t * dst);
 void swap128(const uint8_t *src, uint8_t * dst);
-
 void bt_flip_addr(bd_addr_t dest, bd_addr_t src);
 
 /** 
@@ -120,18 +133,14 @@ char char_for_nibble(int nibble);
  * @param b
  * @return true if equal
  */
-static inline int bd_addr_cmp(bd_addr_t a, bd_addr_t b){
-	return memcmp(a,b, BD_ADDR_LEN);
-}
+int bd_addr_cmp(bd_addr_t a, bd_addr_t b);
 
 /**
  * @brief Copy Bluetooth address
-s * @param dest
+ * @param dest
  * @param src
  */
-static inline void bd_addr_copy(bd_addr_t dest, bd_addr_t src){
-	memcpy(dest,src,BD_ADDR_LEN);
-}
+void bd_addr_copy(bd_addr_t dest, bd_addr_t src);
 
 /**
  * @brief Use printf to write hexdump as single line of data
@@ -166,10 +175,20 @@ char * bd_addr_to_str(bd_addr_t addr);
  * @param buffer for parsed address
  * @return 1 if string was parsed successfully
  */
-int sscan_bd_addr(uint8_t * addr_string, bd_addr_t addr);
+int sscanf_bd_addr(uint8_t * addr_string, bd_addr_t addr);
 
+/**
+ * @brief Constructs UUID128 from 16 or 32 bit UUID using Bluetooth base UUID
+ * @param uuid128 output buffer
+ * @param short_uuid
+ */
+void uuid_add_bluetooth_prefix(uint8_t * uuid128, uint32_t short_uuid);
 
-void uuid_add_bluetooth_prefix(uint8_t *uuid, uint32_t shortUUID);
+/**
+ * @brief Checks if UUID128 has Bluetooth base UUID prefix
+ * @param uui128 to test
+ * @return 1 if it can be expressed as UUID32
+ */
 int  uuid_has_bluetooth_prefix(uint8_t * uuid128);
 
 #if defined __cplusplus
diff --git a/src/classic/bnep.c b/src/classic/bnep.c
index c0d23adde..5124dfd52 100644
--- a/src/classic/bnep.c
+++ b/src/classic/bnep.c
@@ -684,7 +684,7 @@ static bnep_channel_t * bnep_channel_create_for_addr(bd_addr_t addr)
 
     channel->state = BNEP_CHANNEL_STATE_CLOSED;
     channel->max_frame_size = bnep_max_frame_size_for_l2cap_mtu(l2cap_max_mtu());
-    bd_addr_copy(&channel->remote_addr, addr);
+    bd_addr_copy(channel->remote_addr, addr);
     hci_local_bd_addr(channel->local_addr);
 
     channel->net_filter_count = 0;
diff --git a/src/classic/rfcomm.c b/src/classic/rfcomm.c
index 970a37158..8d13c9167 100644
--- a/src/classic/rfcomm.c
+++ b/src/classic/rfcomm.c
@@ -253,7 +253,7 @@ static rfcomm_multiplexer_t * rfcomm_multiplexer_create_for_addr(bd_addr_t addr)
     
     // fill in 
     rfcomm_multiplexer_initialize(multiplexer);
-    bd_addr_copy(&multiplexer->remote_addr, addr);
+    bd_addr_copy(multiplexer->remote_addr, addr);
 
     // add to services list
     btstack_linked_list_add(&rfcomm_multiplexers, (btstack_linked_item_t *) multiplexer);