From bcad84154ba7cb71549a624de4ffa721a9a182ac Mon Sep 17 00:00:00 2001
From: Joel16 <sauskethunderkid@gmail.com>
Date: Sun, 17 Dec 2017 01:06:35 -0600
Subject: [PATCH] Read brightness from HW Regs

Should now work on o3ds/2ds as well.
---
 source/hardware.c | 25 +++++++++++++++++++------
 source/main.c     |  2 +-
 2 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/source/hardware.c b/source/hardware.c
index a2baf45..a5d09fe 100644
--- a/source/hardware.c
+++ b/source/hardware.c
@@ -2,6 +2,9 @@
 
 #include "hardware.h"
 
+#define REG_LCD_TOP_SCREEN (u32)0x202200
+#define REG_LCD_BOTTOM_SCREEN (u32)0x202A00
+
 char * getCardSlotStatus(void)
 {
 	bool isInserted = false;
@@ -37,14 +40,24 @@ char * getBrightness(u32 screen)
 {
 	u32 brightness = 0;
 	static char level[5];
-	
-	if(R_SUCCEEDED(gspLcdInit()))
+
+	if (R_SUCCEEDED(gspInit()))
 	{
-		if (R_SUCCEEDED(GSPLCD_GetBrightness(screen, &brightness)))
-			gspLcdExit();
+		if (screen == GSPLCD_SCREEN_TOP)
+		{
+			if (R_SUCCEEDED(GSPGPU_ReadHWRegs(REG_LCD_TOP_SCREEN + 0x40, &brightness, 4)))
+				gspExit();
+		}
+		else if (screen = GSPLCD_SCREEN_BOTTOM)
+		{
+			if (R_SUCCEEDED(GSPGPU_ReadHWRegs(REG_LCD_BOTTOM_SCREEN + 0x40, &brightness, 4)))
+				gspExit();
+		}
+		else
+			gspExit();
 	}
-	
-	snprintf(level, 4, "%d", (int)brightness);
+
+	snprintf(level, 0x4, "%d", (int)brightness);
 	
 	return level;
 }
\ No newline at end of file
diff --git a/source/main.c b/source/main.c
index 1e08d91..fbde732 100644
--- a/source/main.c
+++ b/source/main.c
@@ -250,7 +250,7 @@ int main(int argc, char *argv[])
 		printf("\x1b[36;1m*\x1b[0m CTR Size: \x1b[36;1m%s\x1b[0m / \x1b[36;1m%s\x1b[0m \n", ctrFreeSize, ctrTotalSize);
 
 		printf("\x1b[26;0H");
-		printf("\x1b[36;1m*\x1b[0m Brightness level: \x1b[36;1m%s\x1b[0m    \n", getBrightness(1));
+		printf("\x1b[36;1m*\x1b[0m Brightness level: \x1b[36;1m%s\x1b[0m    \n", getBrightness(GSPLCD_SCREEN_TOP));
 		
 		printf("\x1b[27;0H");
 		wifiPercent = (osGetWifiStrength() * 33.3333333333);