whats going wrong here...

[epl696]

ok, so im working my way thought the psp-programming.com tutorials, and trying to write a program.... and so... this is what my program is supposed to do....
start up
display a picture
write a greeting on the picture
stay up for 5 sec or so...
and close

exsept... what its doing is
all of the above but this time the program stops about 1 or 2 sec after startup.... ok, it almost made it to 1sec (just timed it, came in at .92 sec on my watch)
and yea, i have tryed playing with all of the varibles for time... its seen its way up to 10000(0?) even... no effect....
and now your asking yourselves... whats the code look like allrety....
so here it comes

#include <pspdisplay.h>
#include <pspctrl.h>
#include <pspkernel.h>
#include <pspdebug.h>
#include <pspgu.h>
#include <png.h>
#include <stdio.h>
#include "graphics.h"
PSP_MODULE_INFO("Frogless Toad", 0, 1, 1);
#define printf pspDebugScreenPrintf
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
#define RGB(r, g, b) ((r)|((g)<<8)|((b)<<16))
/* Exit callback */
int exit_callback(int arg1, int arg2, void *common) {
          sceKernelExitGame();
          return 0;
}

/* Callback thread */
int CallbackThread(SceSize args, void *argp) {
          int cbid;

          cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
          sceKernelRegisterExitCallback(cbid);

          sceKernelSleepThreadCB();

          return 0;
}

/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void) {
          int thid = 0;

          thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
          if(thid >= 0) {
                    sceKernelStartThread(thid, 0, 0);
          }

          return thid;
}

int main() {
pspDebugScreenInit();
SetupCallbacks();
initGraphics();
char buffer[200];
char text[100];
char text2[100];
Image* ourImage;
//main body
sprintf(buffer, "wallpaper.png");
ourImage = loadImage(buffer);
          if (!ourImage) {
                    //Image load failed
                    printf("Image load failed!\n");
          } else {
                    sceDisplayWaitVblankStart();
                    blitAlphaImageToScreen(0 ,0 ,480 , 272, ourImage, 0, 0);
}
Color text1 = RGB(0,0,0);
sprintf(text, "Hello User...");
printTextScreen(230,20,text,text1);
flipScreen();
int count = 0;
while (1){
if (count >= 5000) {
break;
}
count++;
}
sceKernelExitGame();
//done
sceKernelSleepThread();
return 0;
}

so... if anyone has any ideas... im open to sudgestions.... (and if you need the file thats the picture... il send you it)

[3vi1]

At first glance: You seemed to have confused going through a loop with delaying for 1 ms. That loop will not take 5 seconds, and will not even complete in the same timeframe if your PSP is over/underclocked. That is, if the loop even ends up in the compiled code at all because it might just be optimized out during compilation into a simple count=5000.

You need to use an actual timer function. If you just want to quick and dirty make sure it actually causes a noticable delay, throw a wait for vblank into the middle of your loop.

If you want to ignore the delay portion altogether, move the SleepThread up before the ExitGame. The SleepThread's doing nothing now because of it's position behind the ExitGame. That should cause it to at least leave your image or the error on the screen until you press 'home'.

One more thing - you probably want to add "disableGraphics(); pspDebugScreenInit();" right before the portion where you print your errormessage about the image failing to load, and get rid of the earlier pspDebugScreenInit(). I don't think you can use the debugging printf's while you're in graphics mode.

[epl696]

ok, so i tossed some data in the loop.... nothing happend

data = data * data - 2 + 3;

[wrcsti]

i think it was something like vb blank start and something else which i dont recall atm, i did make something just like this as my first solo C project. erased it on a system restore tho and no main.c or makefile or eboot saved for that specific thing, im so stupid