C/C++ Programming Help Thread

I don't know why but i get these errors:

Code:

---

main.c:844: warning: type defaults to 'int' in declaration of 'sceKernelSleepThr
ead'
main.c:844: warning: data definition has no type or storage class
main.c:845: error: syntax error before 'return'
make: *** [main.o] Error 1

---

I have never had this error before. What could be caused by?

Code, please.

um...it helps to see the lines

Wow.....this is not gonna be pretty....sure? It's pretty much my source for my biography of us presidents app that i will release this weekend (i just have to polish up my code and add mp3 player). Well, here it is:
http://rafb.net/p/wuCsy683.html

Just guessing, but I think you might have an extra closing bracket:

Code:

---

}
    sceKernelSleepThread();
    return 0;
}

---

Also, your code is ridiculously redundant. For example, this:

Spoiler for before:

Code:

---

          if (mainsetting == 1) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 1;
          }
          else if (mainsetting == 2) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 2;
          }
          else if (mainsetting == 3) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 3;
          }
          else if (mainsetting == 4) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 4;
          }
          else if (mainsetting == 5) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 5;
          }
          else if (mainsetting == 6) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 6;
          }
          else if (mainsetting == 7) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 7;
          }
          else if (mainsetting == 8) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 8;
          }
          else if (mainsetting == 9) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 9;
          }
          else if (mainsetting == 10) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 10;
          }
          else if (mainsetting == 11) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 11;
          }
          else if (mainsetting == 12) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 12;
          }
          else if (mainsetting == 13) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 13;
          }
          else if (mainsetting == 14) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 14;
          }
          else if (mainsetting == 15) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 15;
          }
          else if (mainsetting == 16) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 16;
          }
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 17;
          }
          else if (mainsetting == 18) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 18;
          }
          else if (mainsetting == 19) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 19;
          } 
          else if (mainsetting == 20) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 20;
          }
          else if (mainsetting == 21) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 21;
          }
          else if (mainsetting == 22) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 22;
          }
          else if (mainsetting == 23) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 23;
          }
          else if (mainsetting == 24) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 24;
          }
          else if (mainsetting == 25) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 25;
          }
          else if (mainsetting == 26) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 26;
          }
          else if (mainsetting == 27) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 27;
          }
          else if (mainsetting == 28) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 28;
          }
          else if (mainsetting == 29) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 29;
          }
          else if (mainsetting == 30) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 30;
          }
          else if (mainsetting == 31) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 31;
          }
          else if (mainsetting == 32) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 32;
          }
          else if (mainsetting == 33) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 33;
          }
          else if (mainsetting == 34) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 34;
          }
          else if (mainsetting == 35) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 35;
          }
          else if (mainsetting == 36) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 36;
          }
          else if (mainsetting == 37) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 37;
          } 
          else if (mainsetting == 38) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 38;
          }
          else if (mainsetting == 39) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 39;
          }
          else if (mainsetting == 40) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 40;
          }
          else if (mainsetting == 41) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 41;
          }
          else if (mainsetting == 42) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 42;
          }
          else if (mainsetting == 43) {
              clearScreen(0);
              OnMain = 0;
              OnPicture = 1;
              picturesetting = 43;
          }
          else if (mainsetting == 44) {
              OnMain = 0;
              OnMenu = 1;
              menusetting = 1;
          }

---

can be shortened to something like this:

Code:

---

          clearScreen(0);
          OnMain = 0;

          if (mainsetting != 44) {
              OnPicture = 1;
              picturesetting = mainsetting;
          }
          else {
              OnMenu = 1;
              menusetting = 1;
          }

---

There's a lot more things like this that would make you code easier to read and to maintain.

Thanks for the tips dude! The second code you gave me is much shorter and better, and i should have seen the pattern. Thanks. Also, by taking out the bracket, i get an error that the main function is non-static, i need that. My code compiles, and it doesn't freeze either, you can see everything loading, the home button works, and the sound is working when you move. Basically, the flipScreen is working.

edit: nvm
-= Double Post =-
ok heres my question:

how do i return the mac address
-= Double Post =-
nvm i figured it out

Zitat:

---

Zitat von Raphael

The screen is the screen. If you clear it, it's cleared and stays so until you change it again. The screen doesn't care for threads or multiple processors working with it. If you consult your brain, it will give you the same answer.

---

I thought so , but how do you let disapere text in thread one , without touching the text in thread 2

I want to recode my game PSPokemon to C but I always get the error "Graphics.h: No such file or directory". It would be great if someone can give me the file.

Zitat:

---

Zitat von sony psp player

I want to recode my game PSPokemon to C but I always get the error "Graphics.h: No such file or directory". It would be great if someone can give me the file.

---

you can get it here
http://www.psp-programming.com/tutorials/c/lesson04.zip

Zitat:

---

Zitat von hallo007

I thought so , but how do you let disapere text in thread one , without touching the text in thread 2

---

If I understood right, just paint the text from thread 2 after clearing the screen.

mm , but how does sony then creat the exit screen?

Zitat:

---

Zitat von hallo007

mm , but how does sony then creat the exit screen?

---

Maybe it draws it's own stuff AFTER the game has drawn its own?

For a file browser, would the following check to see if a file is an mp3?

Code:

---

if(strcmp(".mp3", gameEntry[current_selection].name)-4)

---

And would this load and play that file appropriately?

Code:

---

MP3_Init(1);
MP3_Load(gameEntry[current_selection].name);
MP3_Play();

---

1)if(strcmp(".mp3", gameEntry[current_selection].name) == 0)

2) dunno how you made your mp3player
-= Double Post =-
error: syntax error before 'RpKeyBoard
error: syntax error before '{' token
error: syntax error before '}' token

Code:

---

class RpKeyBoard
{
      public:
            int keyPressed();
            int KEY_ENTER;
            };

---

the code is 100% correct , do i need to include something for classes on psp?

Well, you need to make sure that the suffix of the file is .cpp for C++.

You'll also need to link lstdc++ in your Makefile.

oke , back to the structs , otherwhise i need to port my code to c++ , thnx anyway
-= Double Post =-

Code:

---

main.c:87: warning: passing argument 2 of 'sceKernelCreateThread' from incompatible pointer type

---

Code:

---

soundThread = sceKernelCreateThread("Menusoundthread", menuSoundThread, 0x20, 0x10000, 0, NULL);

---

Code:

---

int menuSoundThread(int argc, const char* argv[])

---

what is wrong with argument two?

dudes i was wondering if there was FireFox 2 on PSP i have searched the web and i found a prank and i was wondering if there was anyone who wanted to get into the scene this can a great idea as FireFox can change themes,has plugins(i hope it would work) and lots of updates and ThunderBird can also be a good suggestion

there is a specualtion forum .......
-= Double Post =-

Zitat:

---

Zitat von hallo007

Code:

---

main.c:87: warning: passing argument 2 of 'sceKernelCreateThread' from incompatible pointer type

---

Code:

---

soundThread = sceKernelCreateThread("Menusoundthread", menuSoundThread, 0x20, 0x10000, 0, NULL);

---

Code:

---

int menuSoundThread(int argc, const char* argv[])

---

what is wrong with argument two?

---

still not fixed
-= Double Post =-
fixed , you need to use (SceSize args, void *argp) instead of (int argc, const char* argv[])

how do i get the psp's mac address i know i gatta use this command:

Spoiler for command:

/**
* Get the Ethernet Address of the wlan controller
*
* @param etherAddr - pointer to a buffer of chars with at least length 7
* @return 0 on success, < 0 on error
*/
int sceWlanGetEtherAddr(char *etherAddr);

so i try and call it like:

char mac_address[7] //7 because thats what the function says to have

then i call it like:
sceWlanGetEtherAddr(mac_a ddress);

but it doesn't place anything into the mac_address as i need to get the mac address.

Zitat:

---

Zitat von slicer4ever

char mac_address[7] //7 because thats what the function says to have

---

If it is 7 maybe it is in hexadecimal format ? What is retrieved in your char?

++ B.

nothing thats the prob

slicer -

Code:

---

char *mac_address;

sceWlanGetEtherAddr(mac_address);

if(mac_address < 0)
    //zomg ERROR!

---

Try that maybe?

If not, change the mac_address[7] to [8] ;) you didnt count the '\0'

WHat do you mean by "nothing" ??
random code or nothing like "00" ?

++ B.

@sg57

when i used *mac_address it just crashed my program;

@maxi when i say nothing i mean i do: osl_Printf_xy(400,40,"%s" ,mac_address);
and i have the color set to red yet nothing appears

however the command says it returns a 0 if it works and it currently is showing a 0 it's just not saveing the mac address into my sting

Code:

---

char *mac_address = (char *) malloc(sizeof(char) * 8);

---

Maybe try:

Code:

---

char macaddr[20];

int test = sceWlanGetEtherAddr(macaddr);

if (test < 0) {
      printf("Error");
} else {
      printf("%s",macaddr);
}

---

Update your SDK, that function prototype was changed when I submitted a bug report.

The mac info is actually stored in an array of unsigned char[7].

Actually from what I've seen it looks like a union of unsigned char mac (6 bytes) and unsigned char reserved? (2 bytes), but it matters not.

Code:

---

unsigned char macAddr[7];
memset(macAddr, 0, 7);
sceWlanGetEtherAddr(macAddr);
pspDebugScreenPrintf("%02X:%02X:%02X:%02X:%02X:%02X", macAddr[0], macAddr[1], macAddr[2], macAddr[3], macAddr[4], macAddr[5]);

---

o thanks for the telling me i would have never figured that out insert

I told you it was in hexa ;)
%x is used to print hexadecimal values.

++ B.

Actually, I'm surprised no-one picked up on it earlier.

Each value in a mac address ranges from 00 to FF (hex), which is 0 - 255 in decimal form.

A char only accepts values from -128 to 127, whereas an unsigned char takes 0 to 255.

Yeah but, say I did this:
char signed_byte = 255 //signed_byte now equals -127
It accepts it, it just wraps it around. In C at least, I dunno about in C++.

Zitat:

---

Zitat von hallo007

1)if(strcmp(".mp3", gameEntry[current_selection].name) == 0)

2) dunno how you made your mp3player
-= Double Post =-
error: syntax error before 'RpKeyBoard
error: syntax error before '{' token
error: syntax error before '}' token

Code:

---

class RpKeyBoard
{
      public:
            int keyPressed();
            int KEY_ENTER;
            };

---

the code is 100% correct , do i need to include something for classes on psp?

---

Thank you dude.

As an unsigned char, a mac might look like this:

Code:

---

00:01:4A:81:5D:A7

---

As a char, it would look like:

Code:

---

00:01:4A:FFFFFF81:5D:FFFFFFA7

---

Yeah, if you converted it to int and then to unsigned int.

Try it, I assure you char or unsigned char will print exactly as I've shown.

I've never tried printf("%u",(char)foo); before, so I wouldn't really know. printf probably converts it internally if that's the case.

arg can some1 help me some more i hate asking questions but i've never worked with these functions so i need some help

Spoiler for code form pspnet_adhoc.h:

/**
* Create a PDP object.
*
* @param mac - Your MAC address (from sceWlanGetEtherAddr)
* @param port - Port to use, lumines uses 0x309
* @param unk2 - Unknown, lumines sets to 0x400
* @param unk3 - Unknown, lumines sets to 0
*
* @return The ID of the PDP object (< 0 on error)
*/
int sceNetAdhocPdpCreate(char *mac, int port, unsigned int unk2, int unk3);

can someone give me an example of how that is surpose to work when properly called this is as far as i've goten:


sprintf(mac_address_true, "%02X%02X%02X%02X%02X%02X ", mac_address[0], mac_address[1], mac_address[2], mac_address[3], mac_address[4], mac_address[5]);

int pdp = sceNetAdhocPdpCreate(mac_ address_true,0x309,0x400, 0);

it keeps returning a negative number and as far as i can see that the mac should look like:
05d4c3b21a

however i'm not 100 % sure

Right i've searched around a bit but now gave up:

How do you use C++ for the PSP, and can you therefore use libraries such as the string, and sstream libraries ?

Thanks,
MiG

*Smacks head against another wall*

Add '-lstdc++' to you libs line of your makefile.