From 1aba60813329e3d0d018fd10c14a5b8615d5aa32 Mon Sep 17 00:00:00 2001
From: Marek Bel <marek.bel@posta.cz>
Date: Wed, 7 Mar 2018 18:30:33 +0100
Subject: [PATCH] Document valid usage of lcd_goto_menu(), wrap
 lcd_second_serial_set() by HAS_SECOND_SERIAL_PORT macro.

---
 Firmware/ultralcd.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Firmware/ultralcd.cpp b/Firmware/ultralcd.cpp
index 0fb581ae..461c19f6 100644
--- a/Firmware/ultralcd.cpp
+++ b/Firmware/ultralcd.cpp
@@ -3608,13 +3608,15 @@ void lcd_temp_calibration_set() {
 	lcd_goto_menu(lcd_settings_menu, 10);
 }
 
+#ifdef HAS_SECOND_SERIAL_PORT
 void lcd_second_serial_set() {
 	if(selectedSerialPort == 1) selectedSerialPort = 0;
 	else selectedSerialPort = 1;
 	eeprom_update_byte((unsigned char *)EEPROM_SECOND_SERIAL_ACTIVE, selectedSerialPort);
 	MYSERIAL.begin(BAUDRATE);
-	lcd_goto_menu(lcd_settings_menu, 11);
+	lcd_goto_menu(lcd_settings_menu, 11);//doesn't break menuStack
 }
+#endif //HAS_SECOND_SERIAL_PORT
 
 void lcd_calibrate_pinda() {
 	enquecommand_P(PSTR("G76"));