#145054 - Shay - Sun Nov 11, 2007 1:45 am
Hi all
Would you know how to print in an external file for log ?
fwrite does not seem to work...
Thank you
#145055 - Lick - Sun Nov 11, 2007 2:02 am
Did you initialize libfat? Without libfat, standard file I/O functions will not work on the DS.
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#145056 - Shay - Sun Nov 11, 2007 2:08 am
Yes I initialized libfat
Here is the code to print :
| Code: |
FILE *f = fopen(fileName_.c_str(), "wb");
fwrite("<?xml version=\"1.0\" encoding=\"utf-16\"?>", sizeof(char) * 40, 1, f);
fclose(f);
|
But the file remains empty... :(
#145063 - Lick - Sun Nov 11, 2007 3:53 am
You're testing on an emulator or actual hardware? AFAIK, none of the existing emulators have implemented *reliable* file output. Try running on real hardware (don't forget to DLDI-patch your binaries!).
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#145065 - Shay - Sun Nov 11, 2007 4:00 am
I try on emulator for now.
Thank you
#145068 - dantheman - Sun Nov 11, 2007 4:11 am
Which emulator are you using? Some have support for DLDI or libfat while others don't.
#145098 - shash - Sun Nov 11, 2007 5:07 pm
As of now, no emulator flushes the emulated FAT memory back to the host file-system, so writing to it won't have any effect.
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#145100 - HyperHacker - Sun Nov 11, 2007 5:17 pm
Does it persist across resets, though? You could write the file, then reset and use DSOrganize to read it.
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#145164 - shash - Mon Nov 12, 2007 2:04 am
Afaik, all the emulators (desmume does it that way) seem to reset the FAT emulated buffer when loading a game/app from HD, as they create the emulated FAT system only from the source folder.
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#145176 - HyperHacker - Mon Nov 12, 2007 4:58 am
What if you just hit reset without loading another ROM? You could dump the file to the screen at startup.
Also, No$GBA supports debug logging.
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I'm a PSP hacker now, but I still <3 DS.
#145190 - shash - Mon Nov 12, 2007 11:47 am
| HyperHacker wrote: |
| What if you just hit reset without loading another ROM? You could dump the file to the screen at startup. |
Well, I guess that would be feasible, but probably too much of a hack :P
| HyperHacker wrote: |
| Also, No$GBA supports debug logging. |
That's a way better solution, implementing some sort of log port seems better :)
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