From c92b59952a9eb517d92df58f428df8dbb03a1f05 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Fri, 24 Apr 2015 22:16:09 -0700
Subject: [PATCH] Use millis_t for progress_bar_ms and expire_status_ms

---
 Marlin/ultralcd.cpp                              | 8 ++++----
 Marlin/ultralcd_implementation_hitachi_HD44780.h | 9 +++++----
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/Marlin/ultralcd.cpp b/Marlin/ultralcd.cpp
index a310db6143..1d4e167287 100644
--- a/Marlin/ultralcd.cpp
+++ b/Marlin/ultralcd.cpp
@@ -267,8 +267,8 @@ static void lcd_status_screen() {
   #ifdef LCD_PROGRESS_BAR
     millis_t ms = millis();
     #ifndef PROGRESS_MSG_ONCE
-      if (ms > progressBarTick + PROGRESS_BAR_MSG_TIME + PROGRESS_BAR_BAR_TIME) {
-        progressBarTick = ms;
+      if (ms > progress_bar_ms + PROGRESS_BAR_MSG_TIME + PROGRESS_BAR_BAR_TIME) {
+        progress_bar_ms = ms;
       }
     #endif
     #if PROGRESS_MSG_EXPIRE > 0
@@ -1392,9 +1392,9 @@ void lcd_ignore_click(bool b) {
 
 void lcd_finishstatus(bool persist=false) {
   #ifdef LCD_PROGRESS_BAR
-    progressBarTick = millis();
+    progress_bar_ms = millis();
     #if PROGRESS_MSG_EXPIRE > 0
-      expire_status_ms = persist ? 0 : progressBarTick + PROGRESS_MSG_EXPIRE;
+      expire_status_ms = persist ? 0 : progress_bar_ms + PROGRESS_MSG_EXPIRE;
     #endif
   #endif
   lcdDrawUpdate = 2;
diff --git a/Marlin/ultralcd_implementation_hitachi_HD44780.h b/Marlin/ultralcd_implementation_hitachi_HD44780.h
index 50c6deb5e4..eb1f525cc2 100644
--- a/Marlin/ultralcd_implementation_hitachi_HD44780.h
+++ b/Marlin/ultralcd_implementation_hitachi_HD44780.h
@@ -194,9 +194,9 @@
 #include "utf_mapper.h"
 
 #ifdef LCD_PROGRESS_BAR
-  static uint16_t progressBarTick = 0;
+  static millis_t progress_bar_ms = 0;
   #if PROGRESS_MSG_EXPIRE > 0
-    static uint16_t expire_status_ms = 0;
+    static millis_t expire_status_ms = 0;
   #endif
   #define LCD_STR_PROGRESS  "\x03\x04\x05"
 #endif
@@ -588,8 +588,9 @@ static void lcd_implementation_status_screen() {
   #ifdef LCD_PROGRESS_BAR
 
     if (card.isFileOpen()) {
-      if (millis() >= progressBarTick + PROGRESS_BAR_MSG_TIME || !lcd_status_message[0]) {
-        // draw the progress bar
+      // Draw the progress bar if the message has shown long enough
+      // or if there is no message set.
+      if (millis() >= progress_bar_ms + PROGRESS_BAR_MSG_TIME || !lcd_status_message[0]) {
         int tix = (int)(card.percentDone() * LCD_WIDTH * 3) / 100,
           cel = tix / 3, rem = tix % 3, i = LCD_WIDTH;
         char msg[LCD_WIDTH+1], b = ' ';