diff --git a/tool/misc/update_btstack_config.py b/tool/misc/update_btstack_config.py
new file mode 100755
index 000000000..1e23bf5d4
--- /dev/null
+++ b/tool/misc/update_btstack_config.py
@@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+import fileinput
+import os
+import re
+import sys
+
+defines_to_add = []
+defines_to_remove = []
+
+# dictionary with existing lines as keys, and new text as value
+lines_to_replace = {}
+
+def get_line_ending(full_path):
+    with open(full_path, "r", newline='') as fin:
+        line = fin.readline()
+        if line.endswith('\r\n'):
+            return '\r\n'
+        if line.endswith('\r'):
+            return '\r'
+        return '\n'
+
+
+def configuration_from_block(block, line_ending):
+    global defines_to_add, defines_to_remove
+    configuration = ""
+    
+    if len(block) == 0:
+        return ""
+
+    for item in defines_to_remove:
+        if item in block:
+            block.remove(item)
+
+    for item in temp_defines_to_add:
+        if item in block:
+            temp_defines_to_add.remove(item)
+            continue
+
+        if len(block) > 0:
+            prefix = block[0].split("_")[0]
+            if item.startswith(prefix):
+                block.append(item)
+                temp_defines_to_add.remove(item)
+    
+    block.sort()
+    for item in block:
+        configuration += ("#define %s%s" % (item, line_ending))
+
+    configuration += ("%s" % (line_ending))
+    return configuration
+
+def read_and_update_configuration(full_path, line_ending):
+    global lines_to_replace, temp_defines_to_add
+
+    configuration = ""
+    block = []
+    temp_defines_to_add = defines_to_add.copy()
+    
+    with open(full_path, "rt") as fin:
+        for unstripped_line in fin:
+            line = unstripped_line.strip()
+
+            if not line:
+                if len(block) == 0:
+                    # we have newline to deal with
+                    configuration += line_ending
+                else:
+                    configuration += configuration_from_block(block, line_ending)
+                block = []
+            else:
+                if line in lines_to_replace.keys():
+                    configuration += ("%s%s" % (lines_to_replace[line], line_ending))
+                    continue
+
+                parts = re.match("#define\\s*(.*)", line)
+                if parts:
+                    block.append(parts[1])
+                else:
+                    # if commented code follows directly block, process block, and start a new one
+                    configuration += configuration_from_block(block, line_ending)
+                    block = []
+                    configuration += ("%s%s" % (line, line_ending))
+    
+    if len(temp_defines_to_add) > 0:
+        print("Cannot add defines: " % temp_defines_to_add)
+        sys.exit(10)
+
+    # if end of file could not be detected, process last block
+    configuration += configuration_from_block(block, line_ending)
+    return configuration
+
+def write_configuration(full_path, config_file):
+    with open(full_path, "wb") as fout:
+        bytes = configuration.encode('utf-8')
+        fout.write(bytes)
+
+btstack_root = os.path.abspath(os.path.dirname(sys.argv[0]) + '/../../port')
+
+config_file = "/Users/mringwal/Projects/btstack/port/arduino/btstack_config.h"
+line_ending = get_line_ending(config_file)
+# configuration = read_and_update_configuration(config_file, line_ending)
+# write_configuration(config_file, configuration)
+# sys.exit(0)
+
+for root, dirs, files in os.walk(btstack_root, topdown=True):
+    for f in files:
+        if f.endswith("btstack_config.h"):
+            config_file = root + "/" + f
+            line_ending = get_line_ending(config_file)
+            configuration = read_and_update_configuration(config_file, line_ending)
+            write_configuration(config_file, configuration)