Hacking Coding for the 3-in-1

[spinal_cord]

A Quick question... Has anyone here had any experience with coding for the 3in1?
I am trying to use the following code to backup and restore the sram, but when I start the actual gba games, I am told that the saves are corrupt.
As far as I know, the games are supposed to use sram, so it shouldn't be causing a problem from that angle.

Anyone able to help?

CODEvoid writeSRAMToFile(char* filename)
{

ÂÂÂÂu8 pages = 0;

ÂÂÂÂFILE* saver = fopen(filename, "rb+");

ÂÂÂÂu8* buf = (u8*)malloc(sramBufferSize);

ÂÂÂÂint i = 0; // the setup for which page to start dumping from if it is a prototype
ÂÂÂÂ
ÂÂ pages = TOT_SRAM_PAGES;

ÂÂÂÂOpenNorWrite();
ÂÂÂÂfor (; i < pages; i ++)
ÂÂÂÂ{
ÂÂÂÂÂÂÂÂmemset(buf, 0, sramBufferSize);
ÂÂÂÂÂÂÂÂSetRampage(i);
ÂÂÂÂÂÂÂÂReadSram(0x0A000000, buf, sramBufferSize);
ÂÂÂÂÂÂÂÂfwrite(buf, sramBufferSize, 1, saver);
ÂÂÂÂ}

ÂÂÂÂfree(buf);
ÂÂÂÂfclose(saver);
ÂÂÂÂSetRampage(0);

ÂÂÂÂCloseNorWrite();
}

void writeFileToSRAM(char* filename)
{

ÂÂÂÂFILE* saveFile = fopen(filename, "rb");
ÂÂ
ÂÂÂÂu8* saveBuf;
ÂÂÂÂsaveBuf = (u8*)malloc(sramBufferSize);

ÂÂÂÂblankSRAM((64+256)/4);

ÂÂÂÂint ret = 1;
ÂÂÂÂÂÂ
ÂÂ int i = 16;
ÂÂÂÂfor (i = getStartpage(); i < MAX_SRAM_PAGES && ret == 1; i ++)
ÂÂÂÂ{
ÂÂÂÂÂÂÂÂmemset(saveBuf, 0, sramBufferSize);
ÂÂÂÂÂÂÂÂSetRampage(i);
ÂÂÂÂÂÂÂÂret = fread(saveBuf, sramBufferSize, 1, saveFile);
ÂÂÂÂÂÂÂÂif (ret == 1) WriteSram(0x0A000000, (u8*)saveBuf, sramBufferSize);
ÂÂÂÂ}

ÂÂÂÂfclose(saveFile);
ÂÂÂÂfree(saveBuf);
ÂÂÂÂSetRampage(0);

}

void writeSAV(void) {

ÂÂ PA_OutputText(0,0,ln,"Backing up save file.\n"); ln++;
ÂÂ
ÂÂ char* saveLocation = calloc(1, 512);
ÂÂ FILE* configFile;
ÂÂ FILE* saveTest;
ÂÂ
ÂÂ configFile = fopen("/gba.cfg", "a");
ÂÂ fclose(configFile);
ÂÂ configFile = fopen("/gba.cfg", "r");
ÂÂ fgets(saveLocation, 512, configFile);
ÂÂ fclose(configFile);
ÂÂ saveTest = fopen(saveLocation, "w");
ÂÂ if(saveTest){
ÂÂÂÂÂÂfclose(saveTest);
ÂÂÂÂÂÂwriteSRAMToFile(saveLocation);
ÂÂ }
ÂÂ
ÂÂ free(saveLocation);
ÂÂ
}


void readSAV(void) {

ÂÂ PA_OutputText(0,0,ln,"Writing save file.\n"); ln++;

ÂÂ char savename[256] = "";
ÂÂ FILE* saveConfig;
ÂÂ
ÂÂ strncpy(savename, GBA_Game, strlen(GBA_Game)-3);
ÂÂ strcat(savename, "sav");

ÂÂ PA_OutputText(0,0,ln,"copying %s", savename); ln++;
ÂÂ writeFileToSRAM(savename);ÂÂ

ÂÂ saveConfig = fopen("/gba.cfg", "wb");
ÂÂ fwrite(savename, strlen(savename), 1, saveConfig);
ÂÂ
ÂÂ fclose(saveConfig);
ÂÂ
}

 

[how_do_i_do_that]

you need a trigger in your config so that when someone loads a game you set the trigger to on in the config. That way on the next startup of the program it will automatically execute the backup procedure. Then after the procedure set the trigger in the config to off.

 

[spinal_cord]

I'm not sure that information is any help to me. The problem I'm having, is that the games say that teh data is corrupt when it is loaded to the card.

 

[how_do_i_do_that]

you can look at cory's source code to see what you might have done wrong. Or the wood code.