From 9c410ddf68ae0afed0ea1183b255045b899ae664 Mon Sep 17 00:00:00 2001
From: dot-bob <robfrommendon@gmail.com>
Date: Sat, 15 Apr 2017 22:45:15 -0600
Subject: [PATCH] Fixed an issue where a display with a hardware reset pin
(LCD_RESET) may not get initialized properly.
---
Marlin/ultralcd_impl_DOGM.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/Marlin/ultralcd_impl_DOGM.h b/Marlin/ultralcd_impl_DOGM.h
index cb06db95a2..3bbedea1b9 100644
--- a/Marlin/ultralcd_impl_DOGM.h
+++ b/Marlin/ultralcd_impl_DOGM.h
@@ -240,7 +240,7 @@ void lcd_printPGM(const char* str) {
for (; char c = pgm_read_byte(str); ++str) lcd_print(c);
}
-// Initialize or re-initializw the LCD
+// Initialize or re-initialize the LCD
static void lcd_implementation_init() {
#if PIN_EXISTS(LCD_BACKLIGHT) // Enable LCD backlight
@@ -248,7 +248,11 @@ static void lcd_implementation_init() {
#endif
#if PIN_EXISTS(LCD_RESET)
+ OUT_WRITE(LCD_RESET_PIN, LOW); // perform a clean hardware reset
+ _delay_ms(5);
OUT_WRITE(LCD_RESET_PIN, HIGH);
+ _delay_ms(5); // delay to allow the display to initalize
+ u8g.begin(); // re-initialize the display
#endif
#if DISABLED(MINIPANEL) // setContrast not working for Mini Panel