C/C++ Programming Help Thread

[Maxi_Jac']

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.

[slicer4ever]

nothing thats the prob

[SG57]

slicer -

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'

[Maxi_Jac']

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

++ B.

[slicer4ever]

@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

[PSPJunkie_]

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

[ADPSP]

Maybe try:

char macaddr[20];

int test = sceWlanGetEtherAddr(macaddr);

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

[Insert_Witty_Name]

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.

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]);

[slicer4ever]

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

[Maxi_Jac']

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

++ B.

[Insert_Witty_Name]

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.

[Archaemic]

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++.

[BlackShark]

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

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.

[Insert_Witty_Name]

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

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

As a char, it would look like:

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

[Archaemic]

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

[Insert_Witty_Name]

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

[Archaemic]

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.

[slicer4ever]

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

[MiG]

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

[PSPJunkie_]

*Smacks head against another wall*

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

[MiG]

*Smacks head against another wall*

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

Thanks.

No need to be an ass about it tho.. Searching C++ just retrieves blank results on the forum.

I tried to search, and gave up..

Jeez.
-= Double Post =-
Right, just tried this, and i've tried

#include <string>

but it still doesn't like me declaring strings with the usual "string x" or watever.

[PSPJunkie_]

Dude, I don't care what you say. This topic has come up several times, both here and on PSP-Programming.

[MiG]

Dude, I don't what you say. This topic has come up several times, both here and on PSP-Programming.

Well some links would be nice.

I'd love a comprehensive set of instructions to using c++ on the PSP.

[yaustar]

The order of libs matters for some reason when linking to the C++ STL libraries. I don't have it with me but I post it up later.

[MiG]

The order of libs matters for some reason when linking to the C++ STL libraries. I don't have it with me but I post it up later.

thanks.

[slicer4ever]

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

any1?

[hallo007]

you are trying to make an adhoc connection?

[slicer4ever]

yes

[hallo007]

http://www.psp-programming.com/forum...hp?topic=473.0

A example , it's a bit more then just a function

[slicer4ever]

thanks