Add vendor name in bluetooth rx app (#2696)

* add macaddress db, add vendor name in bluetooth rx app

* show "missing macaddress.db" instead of unknown if db not found

* bluetooth rx list with colors based on mac vendor

* bug fix

firmware/tools/make_macaddress_db/make_macaddress_db.py

@@ -0,0 +1,130 @@
+#!/usr/bin/env python3
+# Copyright (C) 2025 Tommaso Ventafridda
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+# -------------------------------------------------------------------------------------
+# Create macaddress.db, used for BLE receiver application, using
+# https://standards-oui.ieee.org/oui/oui.txt as a source.
+# -------------------------------------------------------------------------------------
+
+import urllib.request
+import unicodedata
+import re
+from typing import List, Tuple
+
+
+def download_oui_file() -> str:
+    """Download the OUI file from IEEE"""
+    url = "https://standards-oui.ieee.org/oui/oui.txt"
+    print(f"Downloading OUI database from {url}...")
+    try:
+        with urllib.request.urlopen(url) as response:
+            content = response.read().decode("utf-8")
+        print("Download completed successfully.")
+        return content
+    except Exception as e:
+        print(f"Error downloading OUI file: {e}")
+        raise
+
+
+def parse_oui_data(content: str) -> List[Tuple[str, str]]:
+    """Parse the OUI file content and extract MAC prefixes and vendor names"""
+    entries = []
+    lines = content.split("\n")
+
+    for _, line in enumerate(lines):
+        # Look for lines with (hex) pattern
+        if "(hex)" in line:
+            # Extract MAC prefix and vendor name
+            match = re.match(
+                r"^([0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2})\s+\(hex\)\s+(.+)$",
+                line.strip(),
+            )
+            if match:
+                # Remove dashes: "28-6F-B9" -> "286FB9"
+                mac_prefix = match.group(1).replace(
+                    "-", ""
+                ) 
+                vendor_name = match.group(2).strip()
+
+                # Normalize vendor name and limit to 63 characters
+                vendor_name = (
+                    unicodedata.normalize("NFKD", vendor_name[:63])
+                    .encode("ascii", "ignore")
+                    .decode("ascii")
+                )
+
+                if mac_prefix and vendor_name:
+                    entries.append((mac_prefix, vendor_name))
+
+    print(f"Parsed {len(entries)} MAC address entries.")
+    return entries
+
+
+def create_database(
+    entries: List[Tuple[str, str]], output_filename: str = "macaddress.db"
+):
+    """Create the binary database file."""
+    # Sort entries by MAC prefix for binary search
+    entries.sort(key=lambda x: x[0])
+
+    mac_prefixes = bytearray()
+    vendor_data = bytearray()
+    row_count = 0
+
+    for mac_prefix, vendor_name in entries:
+        # MAC prefix: 6 hex chars + null terminator = 7 bytes
+        mac_prefixes += bytearray(mac_prefix + "\0", encoding="ascii")
+
+        # Vendor name: pad to 64 bytes
+        vendor_bytes = vendor_name.encode("ascii", "ignore")
+        vendor_padding = bytearray("\0" * (64 - len(vendor_bytes)), encoding="ascii")
+        vendor_data += vendor_bytes + vendor_padding
+
+        row_count += 1
+
+    # Write database: index section followed by data section
+    with open(output_filename, "wb") as database:
+        database.write(mac_prefixes + vendor_data)
+
+    print(f"Created database '{output_filename}' with {row_count} MAC address entries.")
+    print(f"Index section: {len(mac_prefixes)} bytes")
+    print(f"Data section: {len(vendor_data)} bytes")
+    print(f"Total database size: {len(mac_prefixes) + len(vendor_data)} bytes")
+
+
+def main():
+    """Main function to create the MAC address database."""
+    try:
+        oui_content = download_oui_file()
+        entries = parse_oui_data(oui_content)
+
+        if not entries:
+            print("No valid entries found in OUI file!")
+            return
+
+        create_database(entries)
+
+        print("MAC address database creation completed successfully!")
+
+    except Exception as e:
+        print(f"Error creating MAC address database: {e}")
+        return 1
+
+
+if __name__ == "__main__":
+    exit(main())