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DS development > cowboys vs. nords

#71415 - martin32 - Sun Feb 12, 2006 7:36 pm

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Last edited by martin32 on Tue Sep 07, 2010 7:35 am; edited 2 times in total

#71966 - martin32 - Wed Feb 15, 2006 6:22 pm

After lots more investigation - and reference to NDSTech Wiki - it looks as if the RAM data in my DS is not initialiazed with that of the firmware data settings.

So what I do now (within the arm7) is execute:

readFirmware(0x03FE00,PersonalData,len(PersonalData));

this copies the firmware settings area manually into the personalData area within RAM and therefore libnds now works fine.

I need to refine the copy as there is more than one copy of the settings within the Firmware - so need to check which is the latest set - but at least I can start to use the stylus now

Does anyone know how/when the firmware data settings are transferred into RAM - apparantly this in on initialisation?? but when is that?

#71994 - tepples - Wed Feb 15, 2006 9:36 pm

If you use FlashMe, and you don't have the "PASS" in your card's GBA header, you need to use A+B+X+Y (not A+B+Select+Start) to load the firmware settings into RAM before your program starts.
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#72008 - josath - Wed Feb 15, 2006 11:27 pm

Also, are you using the MK2 as a simple pass-through, with your app stored on a flash cart, or are you loading your app from the MK2's menu from a SD card?

It's possible that the MK2 is just lame and erases / forgets to set the firmware settings into RAM.

#72114 - martin32 - Thu Feb 16, 2006 3:14 pm

I dont have flashme and I'm using the MK2 and loading from the SD card.
Does anyone else use a MK2 and if so what menu version?

Could the overwritting be the MK2 or the menu software that loads from the SD card.




Molusk - I had to make a few adjustments in the main.c within the arm7 to PALIb as I noticed the IPC values are not set by libnds, and therefore had no values had been set when it got inside PA_UpdateStylus()

Code:
   
if (!(but & 0x40)) {
      touchPosition tempPos = touchReadXY();

      x = tempPos.x;
      y = tempPos.y;
      xpx = tempPos.px;
      ypx = tempPos.py;   
      
      z1 = touchRead(TSC_MEASURE_Z1);
      z2 = touchRead(TSC_MEASURE_Z2);
      
      IPC->touchX    = x;
      IPC->touchY    = y;
      IPC->touchXpx  = xpx;
      IPC->touchYpx  = ypx;
      IPC->touchZ1   = z1;
      IPC->touchZ2   = z2;      
      
      PA_UpdateStylus();
}

#72171 - Mollusk - Thu Feb 16, 2006 9:32 pm

care to see that on palib.com ? not sure why you needed to add that code, that's what stylusupdate does :s
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