Nintendo 3DS >> C/C++

LCD Backlight

參考資訊：
1. sda-cpp
2. libctru doc
3. 3ds-examples

說明：

API
Result GSPGPU_ReadHWRegs(u32 regAddr, u32* data, u8 size)
Result GSPGPU_WriteHWRegs(u32 regAddr, const u32* data, u8 size)

main.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <3ds.h>
  
#ifndef REG_LCDBACKLIGHTMAIN
    #define REG_LCDBACKLIGHTMAIN (u32)(0x1ED02240 - 0x1EB00000)
#endif
 
#ifndef REG_LCDBACKLIGHTSUB
    #define REG_LCDBACKLIGHTSUB (u32)(0x1ED02A40 - 0x1EB00000)
#endif
 
int main(void)
{
    u32 brightnessMain = 0, brightnessSub = 0, off = 0;
 
    gfxInitDefault();
    consoleInit(GFX_TOP, NULL);
 
    GSPGPU_ReadHWRegs(REG_LCDBACKLIGHTMAIN, &brightnessMain, 4);
    GSPGPU_ReadHWRegs(REG_LCDBACKLIGHTSUB, &brightnessSub, 4);
    printf("backlight main=%d, sub=%d\n", brightnessMain, brightnessSub);
    svcSleepThread(3000000000LL);
     
    GSPGPU_WriteHWRegs(REG_LCDBACKLIGHTMAIN, &off, 4);
    GSPGPU_WriteHWRegs(REG_LCDBACKLIGHTSUB, &off, 4);
    svcSleepThread(3000000000LL);
 
    GSPGPU_WriteHWRegs(REG_LCDBACKLIGHTMAIN, &brightnessMain, 4);
    GSPGPU_WriteHWRegs(REG_LCDBACKLIGHTSUB, &brightnessSub, 4);
          
    gspWaitForVBlank();
    gfxSwapBuffers();
    svcSleepThread(3000000000LL);
    gfxExit();
    return 0;
}


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