From 1151cf86670d5c9076f0e947ab1f73b946fabb66 Mon Sep 17 00:00:00 2001
From: Krzysiek Egzmont <egzumer@gmail.com>
Date: Fri, 15 Dec 2023 16:51:09 +0100
Subject: [PATCH] Backlight brightness tuned down for backlight menu entries
 #275

---
 driver/backlight.c | 8 ++++++++
 driver/backlight.h | 1 +
 ui/menu.c          | 7 ++++---
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/driver/backlight.c b/driver/backlight.c
index 379b963..0d00c99 100644
--- a/driver/backlight.c
+++ b/driver/backlight.c
@@ -103,8 +103,16 @@ bool BACKLIGHT_IsOn()
 	return backlightOn;
 }
 
+static uint8_t currentBrightness;
+
 void BACKLIGHT_SetBrightness(uint8_t brigtness)
 {
+	currentBrightness = brigtness;
 	PWM_PLUS0_CH0_COMP = (1 << brigtness) - 1;
 	//PWM_PLUS0_SWLOAD = 1;
 }
+
+uint8_t BACKLIGHT_GetBrightness(void)
+{
+	return currentBrightness;
+}
\ No newline at end of file
diff --git a/driver/backlight.h b/driver/backlight.h
index 8119f90..ae3b268 100644
--- a/driver/backlight.h
+++ b/driver/backlight.h
@@ -36,5 +36,6 @@ void BACKLIGHT_TurnOn();
 void BACKLIGHT_TurnOff();
 bool BACKLIGHT_IsOn();
 void BACKLIGHT_SetBrightness(uint8_t brigtness);
+uint8_t BACKLIGHT_GetBrightness(void);
 
 #endif
diff --git a/ui/menu.c b/ui/menu.c
index d484dbf..fb63f0a 100644
--- a/ui/menu.c
+++ b/ui/menu.c
@@ -590,7 +590,8 @@ void UI_DisplayMenu(void)
 
 		case MENU_ABR:
 			strcpy(String, gSubMenu_BACKLIGHT[gSubMenuSelection]);
-			BACKLIGHT_SetBrightness(-1);
+			if(BACKLIGHT_GetBrightness() < 4)
+				BACKLIGHT_SetBrightness(4);
 			break;
 
 		case MENU_ABR_MIN:
@@ -598,8 +599,8 @@ void UI_DisplayMenu(void)
 			sprintf(String, "%d", gSubMenuSelection);
 			if(gIsInSubMenu)
 				BACKLIGHT_SetBrightness(gSubMenuSelection);
-			else
-				BACKLIGHT_SetBrightness(-1);
+			else if(BACKLIGHT_GetBrightness() < 4)
+				BACKLIGHT_SetBrightness(4);
 			break;	
 
 		case MENU_AM: