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);