From 0b4f65dca83d2e87a758c59953354cf6367247eb Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Fri, 1 Apr 2016 14:20:47 -0700
Subject: [PATCH] Always limit blink to ~1 second intervals

---
 Marlin/ultralcd.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Marlin/ultralcd.cpp b/Marlin/ultralcd.cpp
index cd143a180..141187dcb 100644
--- a/Marlin/ultralcd.cpp
+++ b/Marlin/ultralcd.cpp
@@ -1822,9 +1822,10 @@ int lcd_strlen_P(const char* s) {
 bool lcd_blink() {
   static uint8_t blink = 0;
   static millis_t next_blink_ms = 0;
-  if (millis() >= next_blink_ms) {
+  millis_t ms = millis();
+  if (ms >= next_blink_ms) {
     blink ^= 0xFF;
-    next_blink_ms = millis() + LCD_UPDATE_INTERVAL - 50;
+    next_blink_ms = ms + 1000 - LCD_UPDATE_INTERVAL / 2;
   }
   return blink != 0;
 }