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Skip SD menu refresh if nothing has changed

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This commit is contained in:
Brendan-csel 2013-07-29 21:00:29 +12:00
parent be2dea1dc6
commit d80aecda0a
1 changed files with 2 additions and 0 deletions
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2
Marlin/ultralcd.cpp
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@ -675,6 +675,8 @@ static void lcd_sd_updir()
void lcd_sdcard_menu() void lcd_sdcard_menu()
{ {
if (lcdDrawUpdate == 0 && LCD_CLICKED == 0)
return; // nothing to do (so don't thrash the SD card)
uint16_t fileCnt = card.getnrfilenames(); uint16_t fileCnt = card.getnrfilenames();
START_MENU(); START_MENU();
MENU_ITEM(back, MSG_MAIN, lcd_main_menu); MENU_ITEM(back, MSG_MAIN, lcd_main_menu);