Changed bacnet name duplicate check to allow to rewrite with the same name to the same object without duplicate name error.

bacnet-stack/ports/bdk-atxx4-mstp/bname.c

@@ -157,7 +157,7 @@ static bool bacnet_name_isvalid(
     return valid;
 }
 
-static bool bacnet_name_save(
+bool bacnet_name_save(
     uint16_t offset,
     uint8_t encoding,
     char *str,
@@ -200,8 +200,10 @@ bool bacnet_name_set(
     return bacnet_name_save(offset, encoding, str, length);
 }
 
-bool bacnet_name_write(
+bool bacnet_name_write_unique(
     uint16_t offset,
+    int object_type,
+    uint32_t object_instance,
     BACNET_CHARACTER_STRING * char_string,
     BACNET_ERROR_CLASS * error_class,
     BACNET_ERROR_CODE * error_code)
@@ -209,18 +211,26 @@ bool bacnet_name_write(
     bool status = false;
     size_t length = 0;
     uint8_t encoding = 0;
+    int duplicate_type = 0;
+    uint32_t duplicate_instance = 0;
 
     length = characterstring_length(char_string);
-
     if (length < 1) {
         *error_class = ERROR_CLASS_PROPERTY;
         *error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
     } else if (length <= NV_EEPROM_NAME_SIZE) {
         encoding = characterstring_encoding(char_string);
         if (encoding < MAX_CHARACTER_STRING_ENCODING) {
-            if (Device_Valid_Object_Name(char_string, NULL, NULL)) {
+            if (Device_Valid_Object_Name(char_string,
-                *error_class = ERROR_CLASS_PROPERTY;
+                &duplicate_type, &duplicate_instance)) {
-                *error_code = ERROR_CODE_DUPLICATE_NAME;
+                if ((duplicate_type == object_type) &&
+                    (duplicate_instance == object_instance)) {
+                    /* writing same name to same object */
+                    status = true;
+                } else {
+                    *error_class = ERROR_CLASS_PROPERTY;
+                    *error_code = ERROR_CODE_DUPLICATE_NAME;
+                }
             } else {
                 status = bacnet_name_set(offset, char_string);
                 if (status) {
@@ -243,7 +253,7 @@ bool bacnet_name_write(
 }
 
 /* no required minumum length or duplicate checking */
-bool bacnet_name_write_other(
+bool bacnet_name_write(
     uint16_t offset,
     BACNET_CHARACTER_STRING * char_string,
     BACNET_ERROR_CLASS * error_class,

bacnet-stack/ports/bdk-atxx4-mstp/bname.h

@@ -37,17 +37,24 @@ extern "C" {
     void bacnet_name_init(
         uint16_t eeprom_offset,
         char *default_string);
+    bool bacnet_name_save(
+        uint16_t offset,
+        uint8_t encoding,
+        char *str,
+        uint8_t length);
     void bacnet_name(
         uint16_t eeprom_offset,
         BACNET_CHARACTER_STRING * char_string,
         char *default_string);
-    bool bacnet_name_write(
+    bool bacnet_name_write_unique(
         uint16_t offset,
+        int object_type,
+        uint32_t object_instance,
         BACNET_CHARACTER_STRING * char_string,
         BACNET_ERROR_CLASS * error_class,
         BACNET_ERROR_CODE * error_code);
     /* no required minumum length or duplicate checking */
-    bool bacnet_name_write_other(
+    bool bacnet_name_write(
         uint16_t offset,
         BACNET_CHARACTER_STRING * char_string,
         BACNET_ERROR_CLASS * error_class,

bacnet-stack/ports/bdk-atxx4-mstp/device.c

@@ -902,9 +902,12 @@ bool Device_Write_Property_Local(
             break;
         case PROP_OBJECT_NAME:
             if (value.tag == BACNET_APPLICATION_TAG_CHARACTER_STRING) {
-                status =
+                status = bacnet_name_write_unique(
-                    bacnet_name_write(NV_EEPROM_DEVICE_NAME,
+                    NV_EEPROM_DEVICE_NAME,
-                    &value.type.Character_String, &wp_data->error_class,
+                    value.type.Object_Id.type,
+                    value.type.Object_Id.instance,
+                    &value.type.Character_String,
+                    &wp_data->error_class,
                     &wp_data->error_code);
             } else {
                 wp_data->error_class = ERROR_CLASS_PROPERTY;
@@ -914,7 +917,7 @@ bool Device_Write_Property_Local(
         case PROP_DESCRIPTION:
             if (value.tag == BACNET_APPLICATION_TAG_CHARACTER_STRING) {
                 status =
-                    bacnet_name_write_other(NV_EEPROM_DEVICE_DESCRIPTION,
+                    bacnet_name_write(NV_EEPROM_DEVICE_DESCRIPTION,
                     &value.type.Character_String, &wp_data->error_class,
                     &wp_data->error_code);
             } else {
@@ -925,7 +928,7 @@ bool Device_Write_Property_Local(
         case PROP_LOCATION:
             if (value.tag == BACNET_APPLICATION_TAG_CHARACTER_STRING) {
                 status =
-                    bacnet_name_write_other(NV_EEPROM_DEVICE_LOCATION,
+                    bacnet_name_write(NV_EEPROM_DEVICE_LOCATION,
                     &value.type.Character_String, &wp_data->error_class,
                     &wp_data->error_code);
             } else {