diff --git a/CHANGELOG.md b/CHANGELOG.md
index 43edbac4..7a8adf58 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@ The git repositories are hosted at the following sites:
 
 ### Added
 
+* Added MS/TP statistics counters for BadCRC and Poll-For-Master. (#1081)
 * Added Lighting Output API to implement override for HOA control.
   Integrated lighting command overridden behavior into the lighting
   output object and added Overridden status flags API.
@@ -99,6 +100,9 @@ The git repositories are hosted at the following sites:
 
 ### Changed
 
+* Changed Who-Am-I and You-Are JSON handlers to eliminate dynamic
+  memory allocation for model and serial number strings,
+  improving memory management and simplifying code. (#1089)
 * Change stm32f4xx example to use static RAM file system. (#1058)
 * Changed the bacnet file object to be storage agnostic by refactoring
   and using callbacks. (#1056)
@@ -110,6 +114,12 @@ The git repositories are hosted at the following sites:
 
 ### Fixed
 
+* Fixed copied code that no longer needs static function scope variables
+  for text names. (#1092)
+* Fixed compiler warning format '%u' expects argument of type 'unsigned int',
+  but argument 4 has type 'uint32_t' {aka 'long unsigned int'}
+  [-Werror=format=] by casting or increasing format specifier size
+  and casting. (#1092)
 * Fixed Lighting_Command to ignore write priority and use its own. (#1086)
 * Fixed BACnetLightingOperation reserved range. (#1086)
 * Fixed missing prototype warning in lighting.c module.
diff --git a/apps/epics/main.c b/apps/epics/main.c
index c28fd00d..67372741 100644
--- a/apps/epics/main.c
+++ b/apps/epics/main.c
@@ -683,7 +683,8 @@ static void PrintReadPropertyData(
 static void Print_Property_Identifier(unsigned propertyIdentifier)
 {
     if (bactext_property_name_proprietary(propertyIdentifier)) {
-        fprintf(stdout, "-- proprietary %u", propertyIdentifier);
+        fprintf(
+            stdout, "-- proprietary %lu", (unsigned long)propertyIdentifier);
     } else {
         fprintf(stdout, "%s", bactext_property_name(propertyIdentifier));
     }
diff --git a/apps/gtk-discover/main.c b/apps/gtk-discover/main.c
index c4bda8d2..bf39c841 100644
--- a/apps/gtk-discover/main.c
+++ b/apps/gtk-discover/main.c
@@ -274,7 +274,9 @@ static void add_discovered_properties_to_gui(
         bacnet_discover_object_property_identifier(
             device_id, object_type, object_instance, index, &property_id);
         if (bactext_property_name_proprietary(property_id)) {
-            asprintfa(&property_string, "proprietary-%u", property_id);
+            asprintfa(
+                &property_string, "proprietary-%lu",
+                (unsigned long)property_id);
         } else {
             asprintfa(
                 &property_string, "%s", bactext_property_name(property_id));
diff --git a/ports/at91sam7s/ai.c b/ports/at91sam7s/ai.c
index 9c706b55..1fdc3bb9 100644
--- a/ports/at91sam7s/ai.c
+++ b/ports/at91sam7s/ai.c
@@ -75,7 +75,7 @@ uint32_t Analog_Input_Index_To_Instance(unsigned index)
 bool Analog_Input_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text_string[16] = "AI-0"; /* okay for single thread */
+    char text_string[16] = "AI-0";
     bool status = false;
 
     if (object_instance < MAX_ANALOG_INPUTS) {
diff --git a/ports/at91sam7s/av.c b/ports/at91sam7s/av.c
index b708f173..dff660af 100644
--- a/ports/at91sam7s/av.c
+++ b/ports/at91sam7s/av.c
@@ -131,7 +131,7 @@ float Analog_Value_Present_Value(uint32_t object_instance)
 bool Analog_Value_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text_string[16] = "AV-0"; /* okay for single thread */
+    char text_string[16] = "AV-0";
     bool status = false;
 
     if (object_instance < MAX_ANALOG_VALUES) {
diff --git a/ports/at91sam7s/bi.c b/ports/at91sam7s/bi.c
index d0a9e7f2..9d46338c 100644
--- a/ports/at91sam7s/bi.c
+++ b/ports/at91sam7s/bi.c
@@ -110,7 +110,7 @@ BACNET_BINARY_PV Binary_Input_Present_Value(uint32_t object_instance)
 bool Binary_Input_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text_string[16] = "BI-0"; /* okay for single thread */
+    char text_string[16] = "BI-0";
     bool status = false;
 
     if (object_instance < MAX_BINARY_INPUTS) {
diff --git a/ports/at91sam7s/bv.c b/ports/at91sam7s/bv.c
index e11cedcd..b73c979d 100644
--- a/ports/at91sam7s/bv.c
+++ b/ports/at91sam7s/bv.c
@@ -105,7 +105,7 @@ BACNET_BINARY_PV Binary_Value_Present_Value(uint32_t object_instance)
 bool Binary_Value_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text_string[16] = "BV-0"; /* okay for single thread */
+    char text_string[16] = "BV-0";
     bool status = false;
 
     if (object_instance < MAX_BINARY_VALUES) {
diff --git a/ports/bdk-atxx4-mstp/ai.c b/ports/bdk-atxx4-mstp/ai.c
index ff4778a3..65d2c819 100644
--- a/ports/bdk-atxx4-mstp/ai.c
+++ b/ports/bdk-atxx4-mstp/ai.c
@@ -77,7 +77,7 @@ uint32_t Analog_Input_Index_To_Instance(unsigned index)
 bool Analog_Input_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text[32]; /* okay for single thread */
+    char text[32];
     bool status = false;
 
     if (object_instance < MAX_ANALOG_INPUTS) {
diff --git a/ports/bdk-atxx4-mstp/av.c b/ports/bdk-atxx4-mstp/av.c
index bc7a7c29..712463c7 100644
--- a/ports/bdk-atxx4-mstp/av.c
+++ b/ports/bdk-atxx4-mstp/av.c
@@ -141,7 +141,7 @@ bool Analog_Value_Present_Value_Set(
 bool Analog_Value_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text[32] = ""; /* okay for single thread */
+    char text[32] = "";
     unsigned index = 0;
     bool status = false;
 
diff --git a/ports/bdk-atxx4-mstp/bi.c b/ports/bdk-atxx4-mstp/bi.c
index d98bbca4..ae679131 100644
--- a/ports/bdk-atxx4-mstp/bi.c
+++ b/ports/bdk-atxx4-mstp/bi.c
@@ -122,7 +122,7 @@ bool Binary_Input_Present_Value_Set(
 bool Binary_Input_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text[32]; /* okay for single thread */
+    char text[32];
     bool status = false;
 
     if (object_instance < MAX_BINARY_INPUTS) {
diff --git a/ports/bdk-atxx4-mstp/bo.c b/ports/bdk-atxx4-mstp/bo.c
index d64afb8e..57692d44 100644
--- a/ports/bdk-atxx4-mstp/bo.c
+++ b/ports/bdk-atxx4-mstp/bo.c
@@ -192,7 +192,7 @@ bool Binary_Output_Out_Of_Service(uint32_t instance)
 bool Binary_Output_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text[32]; /* okay for single thread */
+    char text[32];
     bool status = false;
 
     if (object_instance < MAX_BINARY_OUTPUTS) {
diff --git a/ports/stm32f10x/bo.c b/ports/stm32f10x/bo.c
index 4385ce65..f60bd90f 100644
--- a/ports/stm32f10x/bo.c
+++ b/ports/stm32f10x/bo.c
@@ -181,7 +181,7 @@ bool Binary_Output_Out_Of_Service(uint32_t instance)
 bool Binary_Output_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text_string[16] = "BO-0"; /* okay for single thread */
+    char text_string[16] = "BO-0";
     bool status = false;
 
     if (object_instance < MAX_BINARY_OUTPUTS) {
diff --git a/ports/win32/bip6.c b/ports/win32/bip6.c
index d171aa15..34096a0a 100644
--- a/ports/win32/bip6.c
+++ b/ports/win32/bip6.c
@@ -93,7 +93,7 @@ void bip6_set_interface(char *ifname)
     Hints.ai_socktype = SOCK_DGRAM;
     Hints.ai_protocol = IPPROTO_UDP;
     Hints.ai_flags = AI_NUMERICHOST | AI_PASSIVE;
-    snprintf(port, sizeof(port), "%u", BIP6_Addr.port);
+    snprintf(port, sizeof(port), "%u", (unsigned)BIP6_Addr.port);
     if (BIP6_Debug) {
         debug_fprintf(
             stderr, "BIP6: seeking IPv6 address %s port %s...\n", ifname, port);
diff --git a/ports/xplained/ai.c b/ports/xplained/ai.c
index c5eddf59..48ed7c34 100644
--- a/ports/xplained/ai.c
+++ b/ports/xplained/ai.c
@@ -86,7 +86,7 @@ unsigned Analog_Input_Count(void)
 bool Analog_Input_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
-    static char text[32]; /* okay for single thread */
+    char text[32];
     bool status = false;
     unsigned index = 0;
 
diff --git a/src/bacnet/basic/object/bitstring_value.c b/src/bacnet/basic/object/bitstring_value.c
index 94e13347..dca2e336 100644
--- a/src/bacnet/basic/object/bitstring_value.c
+++ b/src/bacnet/basic/object/bitstring_value.c
@@ -495,8 +495,8 @@ bool BitString_Value_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "BITSTRING_VALUE-%u",
-                object_instance);
+                name_text, sizeof(name_text), "BITSTRING_VALUE-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/blo.c b/src/bacnet/basic/object/blo.c
index d3775546..70d2fb74 100644
--- a/src/bacnet/basic/object/blo.c
+++ b/src/bacnet/basic/object/blo.c
@@ -773,7 +773,7 @@ bool Binary_Lighting_Output_Object_Name(
 {
     bool status = false;
     struct object_data *pObject;
-    char name_text[32] = "BINARY-LIGHTING-OUTPUT-4194303";
+    char name_text[48] = "BINARY-LIGHTING-OUTPUT-4194303";
 
     pObject = Keylist_Data(Object_List, object_instance);
     if (pObject) {
@@ -782,8 +782,8 @@ bool Binary_Lighting_Output_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "BINARY-LIGHTING-OUTPUT-%u",
-                object_instance);
+                name_text, sizeof(name_text), "BINARY-LIGHTING-OUTPUT-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/calendar.c b/src/bacnet/basic/object/calendar.c
index 9e750dd2..4b872417 100644
--- a/src/bacnet/basic/object/calendar.c
+++ b/src/bacnet/basic/object/calendar.c
@@ -384,7 +384,8 @@ bool Calendar_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "CALENDAR-%u", object_instance);
+                name_text, sizeof(name_text), "CALENDAR-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/channel.c b/src/bacnet/basic/object/channel.c
index 0449412b..0516ef1a 100644
--- a/src/bacnet/basic/object/channel.c
+++ b/src/bacnet/basic/object/channel.c
@@ -847,7 +847,7 @@ bool Channel_Object_Name(
     uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
 {
     bool status = false;
-    char name_text[24] = "CHANNEL-4194303";
+    char name_text[32] = "CHANNEL-4194303";
     struct object_data *pObject;
 
     pObject = Object_Data(object_instance);
diff --git a/src/bacnet/basic/object/color_object.c b/src/bacnet/basic/object/color_object.c
index e7c2d5d6..c510df80 100644
--- a/src/bacnet/basic/object/color_object.c
+++ b/src/bacnet/basic/object/color_object.c
@@ -696,7 +696,7 @@ bool Color_Object_Name(
 {
     bool status = false;
     struct object_data *pObject;
-    char name_text[24] = "COLOR-4194303";
+    char name_text[32] = "COLOR-4194303";
 
     pObject = Keylist_Data(Object_List, object_instance);
     if (pObject) {
@@ -704,7 +704,9 @@ bool Color_Object_Name(
             status =
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
-            snprintf(name_text, sizeof(name_text), "COLOR-%u", object_instance);
+            snprintf(
+                name_text, sizeof(name_text), "COLOR-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/color_temperature.c b/src/bacnet/basic/object/color_temperature.c
index a1b357b9..d8179d96 100644
--- a/src/bacnet/basic/object/color_temperature.c
+++ b/src/bacnet/basic/object/color_temperature.c
@@ -935,7 +935,7 @@ bool Color_Temperature_Object_Name(
 {
     bool status = false;
     struct object_data *pObject;
-    char name_text[26] = "COLOR-TEMPERATURE-4194303";
+    char name_text[48] = "COLOR-TEMPERATURE-4194303";
 
     pObject = Keylist_Data(Object_List, object_instance);
     if (pObject) {
@@ -944,8 +944,8 @@ bool Color_Temperature_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "COLOR-TEMPERATURE-%u",
-                object_instance);
+                name_text, sizeof(name_text), "COLOR-TEMPERATURE-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/lc.c b/src/bacnet/basic/object/lc.c
index 35bbc106..deac1fb0 100644
--- a/src/bacnet/basic/object/lc.c
+++ b/src/bacnet/basic/object/lc.c
@@ -244,8 +244,8 @@ bool Load_Control_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "LOAD_CONTROL-%u",
-                object_instance);
+                name_text, sizeof(name_text), "LOAD_CONTROL-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/lo.c b/src/bacnet/basic/object/lo.c
index 1a1008e4..f4daa8a2 100644
--- a/src/bacnet/basic/object/lo.c
+++ b/src/bacnet/basic/object/lo.c
@@ -974,7 +974,7 @@ bool Lighting_Output_Object_Name(
 {
     bool status = false;
     struct object_data *pObject;
-    char name_text[24] = "LIGHTING-OUTPUT-4194303";
+    char name_text[48] = "LIGHTING-OUTPUT-4194303";
 
     pObject = Keylist_Data(Object_List, object_instance);
     if (pObject) {
@@ -983,8 +983,8 @@ bool Lighting_Output_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "LIGHTING-OUTPUT-%u",
-                object_instance);
+                name_text, sizeof(name_text), "LIGHTING-OUTPUT-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/lsp.c b/src/bacnet/basic/object/lsp.c
index 19f669e2..b0757989 100644
--- a/src/bacnet/basic/object/lsp.c
+++ b/src/bacnet/basic/object/lsp.c
@@ -198,8 +198,8 @@ bool Life_Safety_Point_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "LIFE-SAFETY-POINT-%u",
-                object_instance);
+                name_text, sizeof(name_text), "LIFE-SAFETY-POINT-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/lsz.c b/src/bacnet/basic/object/lsz.c
index 7b092a05..b8953e53 100644
--- a/src/bacnet/basic/object/lsz.c
+++ b/src/bacnet/basic/object/lsz.c
@@ -209,8 +209,8 @@ bool Life_Safety_Zone_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "LIFE-SAFETY-ZONE-%u",
-                object_instance);
+                name_text, sizeof(name_text), "LIFE-SAFETY-ZONE-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/object/structured_view.c b/src/bacnet/basic/object/structured_view.c
index b2d229e1..5c3fd78e 100644
--- a/src/bacnet/basic/object/structured_view.c
+++ b/src/bacnet/basic/object/structured_view.c
@@ -168,7 +168,7 @@ bool Structured_View_Object_Name(
 {
     bool status = false;
     struct object_data *pObject;
-    char name_text[24] = "Structured-View-4194303";
+    char name_text[48] = "Structured-View-4194303";
 
     pObject = Keylist_Data(Object_List, object_instance);
     if (pObject) {
@@ -177,8 +177,8 @@ bool Structured_View_Object_Name(
                 characterstring_init_ansi(object_name, pObject->Object_Name);
         } else {
             snprintf(
-                name_text, sizeof(name_text), "Structured-View-%u",
-                object_instance);
+                name_text, sizeof(name_text), "Structured-View-%lu",
+                (unsigned long)object_instance);
             status = characterstring_init_ansi(object_name, name_text);
         }
     }
diff --git a/src/bacnet/basic/service/h_rr_a.c b/src/bacnet/basic/service/h_rr_a.c
index e729829d..72c2b12c 100644
--- a/src/bacnet/basic/service/h_rr_a.c
+++ b/src/bacnet/basic/service/h_rr_a.c
@@ -51,7 +51,7 @@ static void PrintReadRangeData(BACNET_READ_RANGE_DATA *data)
                 by others subject to the procedures and
                 constraints described in Clause 23. */
             debug_printf_stdout(
-                "    proprietary %u", (unsigned)data->object_property);
+                "    proprietary %lu", (unsigned long)data->object_property);
         }
         if (data->array_index == BACNET_ARRAY_ALL) {
             debug_printf_stdout(": ");
diff --git a/src/bacnet/hostnport.c b/src/bacnet/hostnport.c
index 75d4423b..5f2f5f2b 100644
--- a/src/bacnet/hostnport.c
+++ b/src/bacnet/hostnport.c
@@ -949,42 +949,44 @@ int bacnet_bdt_entry_to_ascii(
         if (ip_len == 4) {
             len = snprintf(
                 str, str_size, "%u.%u.%u.%u:%u,%u.%u.%u.%u",
-                value->bbmd_address.host.ip_address.value[0],
-                value->bbmd_address.host.ip_address.value[1],
-                value->bbmd_address.host.ip_address.value[2],
-                value->bbmd_address.host.ip_address.value[3],
-                value->bbmd_address.port, value->broadcast_mask.value[0],
-                value->broadcast_mask.value[1], value->broadcast_mask.value[2],
-                value->broadcast_mask.value[3]);
+                (unsigned)value->bbmd_address.host.ip_address.value[0],
+                (unsigned)value->bbmd_address.host.ip_address.value[1],
+                (unsigned)value->bbmd_address.host.ip_address.value[2],
+                (unsigned)value->bbmd_address.host.ip_address.value[3],
+                (unsigned)value->bbmd_address.port,
+                (unsigned)value->broadcast_mask.value[0],
+                (unsigned)value->broadcast_mask.value[1],
+                (unsigned)value->broadcast_mask.value[2],
+                (unsigned)value->broadcast_mask.value[3]);
         } else if (ip_len == 16) {
             len = snprintf(
                 str, str_size,
                 "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"
                 "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%u",
-                value->bbmd_address.host.ip_address.value[0],
-                value->bbmd_address.host.ip_address.value[1],
-                value->bbmd_address.host.ip_address.value[2],
-                value->bbmd_address.host.ip_address.value[3],
-                value->bbmd_address.host.ip_address.value[4],
-                value->bbmd_address.host.ip_address.value[5],
-                value->bbmd_address.host.ip_address.value[6],
-                value->bbmd_address.host.ip_address.value[7],
-                value->bbmd_address.host.ip_address.value[8],
-                value->bbmd_address.host.ip_address.value[9],
-                value->bbmd_address.host.ip_address.value[10],
-                value->bbmd_address.host.ip_address.value[11],
-                value->bbmd_address.host.ip_address.value[12],
-                value->bbmd_address.host.ip_address.value[13],
-                value->bbmd_address.host.ip_address.value[14],
-                value->bbmd_address.host.ip_address.value[15],
-                value->bbmd_address.port);
+                (unsigned)value->bbmd_address.host.ip_address.value[0],
+                (unsigned)value->bbmd_address.host.ip_address.value[1],
+                (unsigned)value->bbmd_address.host.ip_address.value[2],
+                (unsigned)value->bbmd_address.host.ip_address.value[3],
+                (unsigned)value->bbmd_address.host.ip_address.value[4],
+                (unsigned)value->bbmd_address.host.ip_address.value[5],
+                (unsigned)value->bbmd_address.host.ip_address.value[6],
+                (unsigned)value->bbmd_address.host.ip_address.value[7],
+                (unsigned)value->bbmd_address.host.ip_address.value[8],
+                (unsigned)value->bbmd_address.host.ip_address.value[9],
+                (unsigned)value->bbmd_address.host.ip_address.value[10],
+                (unsigned)value->bbmd_address.host.ip_address.value[11],
+                (unsigned)value->bbmd_address.host.ip_address.value[12],
+                (unsigned)value->bbmd_address.host.ip_address.value[13],
+                (unsigned)value->bbmd_address.host.ip_address.value[14],
+                (unsigned)value->bbmd_address.host.ip_address.value[15],
+                (unsigned)value->bbmd_address.port);
         }
     } else if (value->bbmd_address.host_name) {
         len = snprintf(
             str, str_size, "%*s:%u",
             (int)characterstring_length(&value->bbmd_address.host.name),
             characterstring_value(&value->bbmd_address.host.name),
-            value->bbmd_address.port);
+            (unsigned)value->bbmd_address.port);
     }
 
     return len;
diff --git a/src/bacnet/lighting.c b/src/bacnet/lighting.c
index 09fb1642..382730f8 100644
--- a/src/bacnet/lighting.c
+++ b/src/bacnet/lighting.c
@@ -440,7 +440,7 @@ int lighting_command_to_ascii(
                 priority = value->priority;
             }
             len = snprintf(
-                buf, buf_size, "%u,%f,%lu,%u", value->operation,
+                buf, buf_size, "%u,%f,%lu,%u", (unsigned)value->operation,
                 (double)target_level, (unsigned long)fade_time,
                 (unsigned)priority);
             break;