C/C++ Programming Help Thread

Zitat:

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Zitat von slicer4ever

you have to create your own trace function i believe as i haven't seen any function on the psp that does this, although it's fairly simple just create a function that well write text to a file

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yeh but what text...?

printf usually outputs to TTY over PSPLink. This is why I keep saying that printf should NOT be #defined to something else.

yaustar: why does the program on the previous page make my PSP freeze when ran?

Zitat:

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Zitat von JaSo PsP

yaustar: why does the program on the previous page make my PSP freeze when ran?

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No idea. Wild guess (depending on the size of the struct) stack overflow?

Code:

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    SceIoDirent directoryEntry[MAX_DIRS];

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Reduce the number and see if it still runs?

As Archaemic said, add traces to your code to PSPLink and narrow down the line that is causing the crash.

Code:

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int IdDump(const char* dst)
{

    char PrintBin[56] , dump[512];
        int BinSave;
        u16 idkey;

        BinSave = sceIoOpen(dst, PSP_O_CREAT | PSP_O_TRUNC | PSP_O_WRONLY, 0777);
       
        if(BinSave<0) { return 0; }
        pspDebugScreenClear();
       
   
        for(idkey=0x000;idkey<=0x200;idkey++) // Ampliado desde 0x000 hasta 0x200 (anterior 0x004-0x127)
        {
                pspDebugScreenPrintf("key 0x%03X\n",idkey);
                sprintf(PrintBin,"KEY : 0x%03X\n",idkey);
                sceIoWrite(BinSave, PrintBin, 512);
                sceIdStorageReadLeaf(idkey, dump);
                sceIoWrite(BinSave, dump, 512);
                }
       
       
        sceIoClose(BinSave);
        return 0;
}

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sceIdStorageReadLeaf(idke y, dump);

it crashes at getting the first key:s

I am on the verge of crying. 8 hours for the toolchain. now sdl refuses to install. please tell me what's wrong somebody.

Code:

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[email protected] ~/sdl
$ make
Making all in src
make[1]: Entering directory `/home/Server2003/sdl/src'
.deps/SDL_error.Plo:1: *** multiple target patterns.  Stop.
make[1]: Leaving directory `/home/Server2003/sdl/src'
make: *** [all-recursive] Error 1

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Also when running ./autogen.sh i get this:

Code:

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[email protected] ~/sdl
$ ./autogen.sh
Generating build information using aclocal, automake and autoconf
This may take a while ...
/usr/share/aclocal/libsmi.m4:8: warning: underquoted definition of AM_PATH_LIBSM
I
  run info '(automake)Extending aclocal'
  or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
/usr/share/aclocal/cppunit.m4:4: warning: underquoted definition of AM_PATH_CPPU
NIT
/usr/share/aclocal/libsmi.m4:8: warning: underquoted definition of AM_PATH_LIBSM
I
  run info '(automake)Extending aclocal'
  or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
/usr/share/aclocal/cppunit.m4:4: warning: underquoted definition of AM_PATH_CPPU
NIT
Now you are ready to run ./configure

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This may be relevant to the problem

Did you run the ./configure script? If so, with which parameters?

Code:

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LDFLAGS="-L$(psp-config --pspsdk-path)/lib -lc -lpspuser" \
./configure --host psp --prefix=$(psp-config --psp-prefix)

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What's the full path to the SDL folder?

D:\cygwin\home\Server2003 \SDL

It may be something to do with automake. How do i force it to use automake 1.9 ? instead of 1.10 ?

i think i found my problem, i was supposed to add 'memset' to the code... Me thinks...
-= Double Post =-

Zitat:

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Zitat von eldiablov

D:\cygwin\home\Server2003 \SDL

It may be something to do with automake. How do i force it to use automake 1.9 ? instead of 1.10 ?

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WANT_AUTOMAKE="1.9" before you type make.

Zitat:

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Zitat von eldiablov

D:\cygwin\home\Server2003 \SDL

It may be something to do with automake. How do i force it to use automake 1.9 ? instead of 1.10 ?

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I remember what was in your sig :p

erm. About popups ?

Cant you help me with my SDL problem ?

Zitat:

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Zitat von eldiablov

erm. About popups ?

Cant you help me with my SDL problem ?

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I would never recommend nor TRY SDL myself. But why would u need it?

BTW , your Sig was: "I drink a lot. I'm immature. I love myself. Sue me" Put it back. :p

no. I refuse :p. I want to port something which requires SDL. I normally wouldnt touch it with a barge pole.

how do you get the "main thread's stack size"????

how do you make a simple printf clock hh:mm:ss.

Code:

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void CurrentTime( char * timeText) {
      pspTime rtime;
      sceRtcGetCurrentClockLocalTime(&rtime);
      snprintf(timeText, 8, "%i:%02i" , rtime.hour , rtime.minutes);
}

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Fanjita's code in the Post your C examples Thread

^^ thank you

edit: what include do i need for the function sceRtcGetCurruentClockLoc alTime

psprtc.h

why wont this work. all it writes is a ' and thats it

Code:

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void CurrentTime( char * timeText) {
          pspTime rtime;
          sceRtcGetCurrentClockLocalTime(&rtime);
          snprintf( timeText, 8, "%i:%02i" , rtime.hour , rtime.minutes);       
 
}

 int main()
 {
    dsxSystemInit();
               
        while(1)
        {                     
          dsxDrawingStart();
                dsxDrawFontDefault(0, 100, GU_RGBA(0, 0, 0, 255), CurrentTime);
           
         

   
          dsxDrawingEnd();           
              }

        return 0;
}

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and makefile:

Code:

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# Target Name
TARGET = battery

# Source Files
OBJS = ./main.o

#Build as a prx
BUILD_PRX = 1

# Libraries
LIBS = -ldsx -lpspgum -lpspgu -lm -lpsppower -lpsprtc -lpsphprm

# Misc.
INCDIR =
CFLAGS = -O2 -G0 -Wall
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

LIBDIR =

PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak

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I'm surprised that that would even COMPILE.

Code:

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void CurrentTime( char * timeText) {
          pspTime rtime;
          sceRtcGetCurrentClockLocalTime(&rtime);
          snprintf( timeText, 8, "%i:%02i" , rtime.hour , rtime.minutes);       
 
}

 int main()
 {
    dsxSystemInit();
        char *time = malloc(sizeof(char)*9);
        while(1)
        {
          CurrentTime(time);
          dsxDrawingStart();
                dsxDrawFontDefault(0, 100, GU_RGBA(0, 0, 0, 255), time);
           
         

   
          dsxDrawingEnd();           
              }

        return 0;
}

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Well, the 'CurrentTime' doesnt return anything, void CurrentTime( char * timeText). When you put it in the drawfont function, it doesnt know what to write because that function returns void... The function may work better like this:

Code:

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char* CurrentTime() {
          pspTime rtime;
          char* timeText;
          sceRtcGetCurrentClockLocalTime(&rtime);
          snprintf( timeText, 8, "%i:%02i" , rtime.hour , rtime.minutes);
          return timeText;
}

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plus, when you used the function, you didnt put brackets after it '( char* timeText )' You were supposed to full it with what you wanted to fill...

JaSo, that will cause nothing but trouble. You need to initialize timeText with some memory first.

Zitat:

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Zitat von Archaemic

JaSo, that will cause nothing but trouble. You need to initialize timeText with some memory first.

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that must be why i always get freezage when i use pointers with sprintf.... thanx :) ill use malloc more often.

Zitat:

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Zitat von Archaemic

I'm surprised that that would even COMPILE.

Code:

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void CurrentTime( char * timeText) {
          pspTime rtime;
          sceRtcGetCurrentClockLocalTime(&rtime);
          snprintf( timeText, 8, "%i:%02i" , rtime.hour , rtime.minutes);       
 
}

 int main()
 {
    dsxSystemInit();
        char *time = malloc(sizeof(char)*9);
        while(1)
        {
          CurrentTime(time);
          dsxDrawingStart();
                dsxDrawFontDefault(0, 100, GU_RGBA(0, 0, 0, 255), time);
           
         

   
          dsxDrawingEnd();           
              }

        return 0;
}

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this code returns the same results as the code i was using. just a ' on screen

Try changing
dsxDrawFontDefault(0, 100, GU_RGBA(0, 0, 0, 255), time);
to
dsxDrawFontDefault(0, 100, GU_RGBA(255, 255, 255, 255), time);

Zitat:

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Zitat von Archaemic

Try changing
dsxDrawFontDefault(0, 100, GU_RGBA(0, 0, 0, 255), time);
to
dsxDrawFontDefault(0, 100, GU_RGBA(255, 255, 255, 255), time);

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im getting a warning from cygwin saying "passing arguement 4 of dsxDrawFontDefault from incompatible pointer type"

Then you don't have the code exactly as I have it.

Well, here's a better way anyway:

Code:

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int main() {
    dsxSystemInit();
    pspTime time;
    for(;;) {
        dsxDrawingStart();
        sceRtcGetCurrentClockLocalTime(&time);
        dsxDrawFontDefault(0, 100, GU_RGBA(0, 0, 0, 255), "%i:%02i",time.hour,time.minutes);
        dsxDrawingEnd();
    }
    return 0;
}

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If that still doesn't work, then it's because I know nothing about DSX.

Zitat:

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Zitat von Archaemic

Then you don't have the code exactly as I have it.

Well, here's a better way anyway:

Code:

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int main() {
    dsxSystemInit();
    pspTime time;
    for(;;) {
        dsxDrawingStart();
        sceRtcGetCurrentClockLocalTime(&time);
        dsxDrawFontDefault(0, 100, GU_RGBA(0, 0, 0, 255), "%i:%02i",time.hour,time.minutes);
        dsxDrawingEnd();
    }
    return 0;
}

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If that still doesn't work, then it's because I know nothing about DSX.

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it works!! thank you so so much

my SDL problem is still alive. I have no idea what's wrong :(

Code:

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void func1()
{
char strings[1000];
strcpy(strings,"blahbahlasdfasd");
func2(strings);
}

void func2(void *sh_t)
{
strcpy(sh_t,"");
}

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Will calling func2 clear/free strings to NULL ??

I tried it But does it do the correct job/

You can only 'free()' something that was 'malloc()'d.

You could try.

Code:

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void clearString(char* string)
{
        int i;
        for(i = 0; i < strlen(string); i++)
        {
                string[i] = NULL;
        }
}

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Zitat:

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Zitat von Mr305

Code:

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void func1()
{
char strings[1000];
strcpy(strings,"blahbahlasdfasd");
func2(strings);
}

void func2(void *sh_t)
{
strcpy(sh_t,"");
}

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Will calling func2 clear/free strings to NULL ??

I tried it But does it do the correct job/

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it sets it empty, not NULL. you could do = NULL or free()... i dunno.

I'm having a problem with fscanf, code that works on the PC doesn't work on the PSP. I'm trying to read a hex value from a file, the PC reads it fine, where as the PSP just gives me a 0, and thats it, so I'm just wondering if theres anything special I need to do on the PSP that I don't need to do on the PC?

Thanks.
-Aura

Can you show your routine for both the PC and the PSP?

Ignore what I said, the PC isn't reading it correctly either :Argh:

Guess thats what you get for trying to program at past midnight when your extreamly tired... Oh well, maybe I should just leave it for now, come back to it later.

-Aira

Or you can post it up and get some help. :)

Nah, unless I'm completely stumped I normally have a long hard look at what I'm doing to try and work it out... I find if I work it out I remember it, where as if someone else tells me I normally forget. Most of the time I end up working out little problems like this... just need another tea booster :tup:

-Aura

Zitat:

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Zitat von Mr305

Code:

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void func1()
{
char strings[1000];
strcpy(strings,"blahbahlasdfasd");
func2(strings);
}

void func2(void *sh_t)
{
strcpy(sh_t,"");
}

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Will calling func2 clear/free strings to NULL ??

I tried it But does it do the correct job/

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Variables declared within a function only have the scope of that function.

Once the function ends the memory used by the function is no longer needed.

This doesn't apply to any malloc/calloc/realloc/memalign etc calls.