From 8a926fad103b1409701a092b98f5137ceff6ad5e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gu=C3=B0ni=20M=C3=A1r=20Gilbert?= <gudni.m.g@gmail.com>
Date: Mon, 20 Feb 2023 18:26:43 +0000
Subject: [PATCH] backlight: set rotation flag when certain amount of pulses
 are detected

We don't want to trigger a backlight wakeup randomly, for example
due to background noise.
---
 Firmware/lcd.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Firmware/lcd.cpp b/Firmware/lcd.cpp
index b5f45d2a9..5c0159050 100644
--- a/Firmware/lcd.cpp
+++ b/Firmware/lcd.cpp
@@ -787,7 +787,6 @@ void lcd_buttons_update(void)
 	if (lcd_buttons & EN_B) enc |= B10;
 	if (enc != lcd_encoder_bits)
 	{
-		lcd_backlight_wake_trigger = true; // flag event, knob rotated
 		switch (enc)
 		{
 		case encrot0:
@@ -815,6 +814,10 @@ void lcd_buttons_update(void)
 				lcd_encoder_diff--;
 			break;
 		}
+
+		if (abs(lcd_encoder_diff) >= ENCODER_PULSES_PER_STEP) {
+			lcd_backlight_wake_trigger = true; // flag event, knob rotated
+		}
 	}
 	lcd_encoder_bits = enc;
 }