From b94ab6a2ef56fce3f8db2f84b26e3ac0f4b3b155 Mon Sep 17 00:00:00 2001
From: Alexander Wilde <alexander.wilde87@gmail.com>
Date: Tue, 20 Jun 2023 11:07:45 +0100
Subject: [PATCH] examples/bluetooth: Raise ValueError when advertising data is
 too large.

Signed-off-by: Alexander Wilde <alexander.wilde87@gmail.com>
---
 examples/bluetooth/ble_advertising.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/examples/bluetooth/ble_advertising.py b/examples/bluetooth/ble_advertising.py
index eed527f55d..6dc78c5e3d 100644
--- a/examples/bluetooth/ble_advertising.py
+++ b/examples/bluetooth/ble_advertising.py
@@ -19,6 +19,8 @@ _ADV_TYPE_UUID32_MORE = const(0x4)
 _ADV_TYPE_UUID128_MORE = const(0x6)
 _ADV_TYPE_APPEARANCE = const(0x19)
 
+_ADV_MAX_PAYLOAD = const(31)
+
 
 # Generate a payload to be passed to gap_advertise(adv_data=...).
 def advertising_payload(limited_disc=False, br_edr=False, name=None, services=None, appearance=0):
@@ -50,6 +52,9 @@ def advertising_payload(limited_disc=False, br_edr=False, name=None, services=No
     if appearance:
         _append(_ADV_TYPE_APPEARANCE, struct.pack("<h", appearance))
 
+    if len(payload) > _ADV_MAX_PAYLOAD:
+        raise ValueError("advertising payload too large")
+
     return payload