backlight

3DS/include/drawing.h

@@ -1,5 +1,13 @@
 #pragma once
 
+#ifndef REG_LCDBACKLIGHTMAIN
+#define REG_LCDBACKLIGHTMAIN (u32)(0x1ED02240 - 0x1EB00000)
+#endif
+
+#ifndef REG_LCDBACKLIGHTSUB
+#define REG_LCDBACKLIGHTSUB (u32)(0x1ED02A40 - 0x1EB00000)
+#endif
+
 inline void clearScreen(void);
 
 #define drawPixelRGB(x, y, r, g, b) drawPixelRGBFramebuffer(0, x, y, r, g, b)
@@ -10,3 +18,6 @@ inline void drawBoxFramebuffer(u8 *fb, int x, int y, int width, int height, u8 r
 
 #define drawString(sx, sy, text, ...) drawStringFramebuffer(0, sx, sy, text, ##__VA_ARGS__)
 void drawStringFramebuffer(u8 *fb, int sx, int sy, char *text, ...);
+
+void disableBacklight();
+void enableBacklight();

3DS/source/drawing.c

@@ -155,3 +155,21 @@ void drawStringFramebuffer(u8 *fb, int sx, int sy, char *text, ...) {
 		sx += 8;
 	}
 }
+
+static u32 brightnessMain;
+static u32 brightnessSub;
+
+void disableBacklight() {
+	u32 off = 0;
+	
+	GSPGPU_ReadHWRegs(NULL, REG_LCDBACKLIGHTMAIN, &brightnessMain, 4);
+	GSPGPU_ReadHWRegs(NULL, REG_LCDBACKLIGHTSUB, &brightnessSub, 4);
+	
+	GSPGPU_WriteHWRegs(NULL, REG_LCDBACKLIGHTMAIN, &off, 4);
+	GSPGPU_WriteHWRegs(NULL, REG_LCDBACKLIGHTSUB, &off, 4);
+}
+
+void enableBacklight() {
+	GSPGPU_WriteHWRegs(NULL, REG_LCDBACKLIGHTMAIN, &brightnessMain, 4);
+	GSPGPU_WriteHWRegs(NULL, REG_LCDBACKLIGHTSUB, &brightnessSub, 4);
+}

3DS/source/main.c

@@ -34,7 +34,8 @@ int main(void) {
 	acInit();
 	gfxInitDefault();
 	
-	//consoleInit(GFX_BOTTOM, NULL);
+	gfxSetDoubleBuffering(GFX_TOP, false);
+	gfxSetDoubleBuffering(GFX_BOTTOM, false);
 	
 	if(setjmp(exitJmp)) goto exit;
 	
@@ -81,20 +82,17 @@ int main(void) {
 	gfxFlushBuffers();
 	gfxSwapBuffers();
 	
-	clearScreen();
-	gfxFlushBuffers();
-	gfxSwapBuffers();
+	disableBacklight();
 	
 	while(aptMainLoop()) {
 		hidScanInput();
 		irrstScanInput();
 		
 		u32 kHeld = hidKeysHeld();
-		
 		circlePosition circlePad;
 		circlePosition cStick;
+		hidCstickRead(&cStick);
 		hidCircleRead(&circlePad);
-		irrstCstickRead(&cStick);
 		touchPosition touch;
 		touchRead(&touch);
 		
@@ -104,6 +102,8 @@ int main(void) {
 			if(keyboardToggle) {
 				keyboardActive = !keyboardActive;
 				keyboardToggle = false;
+				
+				if(keyboardActive) enableBacklight();
 			}
 		}
 		else keyboardToggle = true;
@@ -137,15 +137,7 @@ int main(void) {
 		
 		sendKeys(kHeld, circlePad, touch, cStick);
 		
-		receiveBuffer(sizeof(struct packet));
-		
-		/*u8 *frame = gfxGetFramebuffer(GFX_TOP, GFX_LEFT, NULL, NULL);
-		
-		switch(rcvBuf.command) {
-			case SCREENSHOT:
-				//drawStringFramebuffer(frame, 10, 10, "R");
-				break;
-		}*/
+		//receiveBuffer(sizeof(struct packet));
 		
 		if((kHeld & KEY_START) && (kHeld & KEY_SELECT)) longjmp(exitJmp, 1);
 		
@@ -156,6 +148,8 @@ int main(void) {
 	
 	exit:
 	
+	enableBacklight();
+	
 	SOC_Shutdown();
 	
 	svcCloseHandle(fileHandle);