From c40af0c896ad9f1e82d9047f1c0066f10c53e8d5 Mon Sep 17 00:00:00 2001
From: 3d-gussner <3d.gussner@gmail.com>
Date: Tue, 11 Feb 2025 17:59:50 +0100
Subject: [PATCH] M300 set 3.5s duration limit

---
 Firmware/Marlin_main.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index ad9860012b..75b24d2967 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -6515,11 +6515,11 @@ void process_commands()
 
     #### Parameters
     - `S` - frequency in Hz. Not all firmware versions support this parameter
-    - `P` - duration in milliseconds
+    - `P` - duration in milliseconds max 3500ms
     */
     case 300: // M300
     {
-      uint16_t beepP = code_seen('P') ? code_value() : 1000;
+      uint16_t beepP = code_seen('P') ? min(code_value(), 3500) : 1000;
       uint16_t beepS;
       if (!code_seen('S'))
           beepS = 0;