C/C++ Programming Help Thread

yes well i just found out it's the 0 card which only has 1 card per each set of RGBY anyways thanks yaustar for your help

I was curious what the code is for some things like displaying battery life, memory stick space, firmware version, and some other Specs. If someone can help me out it would be greatly appreciated, I am n00by.

http://psp.jim.sh/pspsdk-doc/

very good documentation ;)

Zitat:

---

Zitat von myschoo

http://psp.jim.sh/pspsdk-doc/

very good documentation ;)

---

Okay thanks.

Alright say I want to use this code here:

Zitat:

---

int scePowerGetBatteryLifeTim e ( void )

Get battery life as time.

---

How would I write that in code for it to display? I just found some simple Hello World thing I made and was planning on just having it display in that since I know that runs. Also I have to post this in psppower.h correct? How do I do that just made a new file called psppower.h using my C editing program? Thanks, sorry for the Q's bit new.

ok firstly you need to include psppower.h (not post it i have no idea where your getting that from) like so:
(at top of program)
#include <psppower.h>

now then:

Code:

---

int scePowerGetBatteryLifeTim e ( void )

---

the int part means that the function returns the information into another int

so to do it do:

int power;
power= scePowerGetBatteryLifeTim e();
now the information has been returned to the variable power

now all you have to do is display the variable

Zitat:

---

Zitat von seenit

ok firstly you need to include psppower.h (not post it i have no idea where your getting that from) like so:
(at top of program)
#include <psppower.h>

now then:

Code:

---

int scePowerGetBatteryLifeTim e ( void )

---

the int part means that the function returns the information into another int

so to do it do:

int power;
power= scePowerGetBatteryLifeTim e();
now the information has been returned to the variable power

now all you have to do is display the variable

---

Thank you so much, I will try to learn how to display it!

Or just pspDebugScreenPrintf("%d percent battery left\n", scePowerGetBatteryLife()) ; :)

Zitat:

---

Zitat von MaTiAz

Or just pspDebugScreenPrintf("%d percent battery left\n", scePowerGetBatteryLife()) ; :)

---

Will this display it on the screen? I am having difficulties finding out.

Well I just put it at the bottom like this

Zitat:

---

int main() {
pspDebugScreenInit();
SetupCallbacks();

pspDebugScreenPrintf("%d percent battery left\n", scePowerGetBatteryLife()) ;

printf("Hello there! \n");
printf("- PSDeveloper");

sceKernelSleepThread();

return 0;
}

---

And tried to compile and got an error.

MaTiAz: scePowerGetBatteryLifePer cent()

if your not to familiar with c i suggest learning the basics on the pc otherwise compiling and testing every other second can be a *****

here are some good sites:

http://www.cs.cf.ac.uk/Dave/C/
http://www.cplusplus.com/doc/tutorial/
http://www.cprogramming.com/tutorial.html

those are just a few it well help you very much to know the basics before getting into psp programming

Zitat:

---

Zitat von seenit

if your not to familiar with c i suggest learning the basics on the pc otherwise compiling and testing every other second can be a *****

here are some good sites:

http://www.cs.cf.ac.uk/Dave/C/
http://www.cplusplus.com/doc/tutorial/
http://www.cprogramming.com/tutorial.html

those are just a few it well help you very much to know the basics before getting into psp programming

---

That's not the road I wanted to go but I know some people have said learning on the computer is easier than trying to learn on the PSP. Is there a good compiler and everything for PC that I can use? Man I really wanted to do PSP too me forever to install that stuff and really want to make some small apps. :Argh:

well you can use still go with the psp but cygwin is a compiler for c scripts also it's only the psp toolchain that makes it capable of compiling eboots for the psp otherwise cygwin will compile c scripts

so you don't need to download anything else you already have it completly set up to run c scripts 2

for example create a hello world.cpp file and place the following in it:

Code:

---

#include <stdio.h>

printf("hello world");

---

now in cygwin navigate to the folder where you saved the file and type:
gcc -o hello "hello world.cpp"
hit enter
now type
./hello.exe

and thats it

Zitat:

---

Zitat von seenit

well you can use still go with the psp but cygwin is a compiler for c scripts also it's only the psp toolchain that makes it capable of compiling eboots for the psp otherwise cygwin will compile c scripts

so you don't need to download anything else you already have it completly set up to run c scripts 2

for example create a hello world.cpp file and place the following in it:

Code:

---

#include <stdio.h>

printf("hello world");

---

now in cygwin navigate to the folder where you saved the file and type:
gcc -o hello "hello world.cpp"
hit enter
now type
./hello.exe

and thats it

---

Alright thanks man that is a lot of help. I guess since I really want to get into computer programming the PC is the better place rather than the PSP and I can always go to PSP once I learn some stuff. thanks.

all you need to learn are the basics(integers,floats,ch aracters,arrays,how functions work,searching,I/O,etc,etc)

before heading to the psp than begin with a simple game and expand

Zitat:

---

Zitat von seenit

all you need to learn are the basics(integers,floats,ch aracters,arrays,how functions work,searching,I/O,etc,etc)

before heading to the psp than begin with a simple game and expand

---

Theres more you need to learn than just that, such as memory management, pointers and LOOPS! And generally how a program works.

hence why i said etc,etc

Zitat:

---

Zitat von seenit

hence why i said etc,etc

---

Better to be specific rather than vague. :tup:

Zitat:

---

Zitat von seenit

well you can use still go with the psp but cygwin is a compiler for c scripts also it's only the psp toolchain that makes it capable of compiling eboots for the psp otherwise cygwin will compile c scripts

so you don't need to download anything else you already have it completly set up to run c scripts 2

for example create a hello world.cpp file and place the following in it:

Code:

---

#include <stdio.h>

printf("hello world");

---

now in cygwin navigate to the folder where you saved the file and type:
gcc -o hello "hello world.cpp"
hit enter
now type
./hello.exe

and thats it

---

So umm, first of all, C isn't a scripting language. And that hello world is completely wrong, it's missing the entry point.

Matiaz, i suggest you remove that code from your signature because with noobs like Noob2PsP and Tostoo moping around these forums, they are obviously going to compile it and release it. The new version of Noob2PsP's UnBricker, it also bricks now! lal

Zitat:

---

Zitat von JaSo PsP

Matiaz, i suggest you remove that code from your signature because with noobs like Noob2PsP and Tostoo moping around these forums, they are obviously going to compile it and release it. The new version of Noob2PsP's UnBricker, it also bricks now! lal

---

The code wont compile:) Noob2psp and Tostoo can't code so they can't solve the problems:)

Zitat:

---

Zitat von Coolj

The code wont compile:) Noob2psp and Tostoo can't code so they can't solve the problems:)

---

O rly? Ya rly.

How do you check if a button is being pressed? I don't mean a specific button, but any button at all... I could just do a check for each button individually, but thats going to be a waste of time, so an easier, more effective way would be welcome.

@Raphael - I give up, its been bugging me about the text without the black bit, even though I don't need it anymore, I'd still like to learn how to hook functions. Could you give me some sort of idea how to start learning?

Thanks.
-Aura

Look at apiHook in the PSPLink source.

Psp_ctrl_buttons ?
-= Double Post =-
is it possible to read specifical line from file with sceIo functions?
i looked at sceIoLseek but i can only start from specifical offset or specifical character......

(Someone will probably shout at me for this). I use the c library for opening files, and not the pspiofilemgr.h files, and I've never had any problems.

If your not sure how to use them, its the same as normal C, just check here for how to use everything.

-Aura
-= Double Post =-

Zitat:

---

Zitat von _dysfunctional

Look at apiHook in the PSPLink source.

---

Ok, finally found the source, but I have no idea what I'm actually looking at/for, this is way more advanced than what I normally do, so I havn't really got a clue where I go from here.

-Aura

Aura: There are times when you can't use the stdio file functions, like when running alongside the VSH.

Zitat:

---

Zitat von MaTiAz

Aura: There are times when you can't use the stdio file functions, like when running alongside the VSH.

---

Ah, I knew there must be a reason why there was another way of doing it, but didn't know what it was. I've only ever opened files etc in games. (That actually comes in handy because I need to do this in a plugin I'm making).

-Aura

yeah, i know stdio file function but i thought it was also possible with sceIo ones ... o_O

Zitat:

---

Zitat von Auraomega

(Someone will probably shout at me for this). I use the c library for opening files, and not the pspiofilemgr.h files, and I've never had any problems.

If your not sure how to use them, its the same as normal C, just check here for how to use everything.

-Aura
-= Double Post =-


Ok, finally found the source, but I have no idea what I'm actually looking at/for, this is way more advanced than what I normally do, so I havn't really got a clue where I go from here.

-Aura

---

Well, first you find the library that the function you want to hook is in using sceKernelFindLibraryByNam e() or something like that. You have to compile using the kernel libraries as well. Now that you have the UID, you can use that in apiHookByName. You pass the UID you got, the module name, the function name, and a pointer to the function you want to hook it with.

Code:

---

// PSEUDO!!!
// DON'T EXPECT IT TO WORK!!!!
inline myFuncPatched(same, params, as, orig, function)
{
    return 0;
}

int fooLibUID = sceKernelFindLibraryByName("myLib");
apiHookByName(fooLibUID, "myMod", "myFunc", myFuncPatched);

---

Zitat:

---

I use the c library for opening files, and not the pspiofilemgr.h files, and I've never had any problems.

---

I'm pretty sure the c standard io functions are implemented with the psp specific io functions. In other words the c stdio functions are wrappers for the psp equivilents.

Zitat:

---

Zitat von Auraomega

How do you check if a button is being pressed? I don't mean a specific button, but any button at all... I could just do a check for each button individually, but thats going to be a waste of time, so an easier, more effective way would be welcome.

---

try this:
assuming ur SceCtrlData is pad

Code:

---

if(pad.Buttons){/*any button pressed*/}

---

this might not work idk

That won't work, I've tried something similar.

I'm sure...

Even.. while being Blind folded it works.

try:

Code:

---


main()
{


SceCtrlData glossybutts;
for (;;)
{
glossybutts.Buttons =0;
scectrl..blah;

if (glossybutts.Buttons !=0)
{

DO whatever ya wawnt here.

}

}


}

---

Will... Will Work.

I always had one the bits set, even when no buttons were pressed.
E]
This will work:
if(pad.Buttons & ~PSP_CTRL_MS)

Zitat:

---

Zitat von Mr305

I'm sure...

Even.. while being Blind folded it works.

try:

Code:

---


main()
{


SceCtrlData glossybutts;
for (;;)
{
glossybutts.Buttons =0;
scectrl..blah;

if (glossybutts.Buttons !=0)
{

DO whatever ya wawnt here.

}

}


}

---

Will... Will Work.

---

okay by "scectrl...blah", do u mean scectrlreadbufferpositive ?

Zitat:

---

Zitat von Archaemic

I always had one the bits set, even when no buttons were pressed.
E]
This will work:
if(pad.Buttons & ~PSP_CTRL_MS)

---

Surely if you run in user mode (and not kernel) then checking for the ms wouldn't be available? I've not tried it yet, have a few issues with my PSP at the moment :Argh:

Also, can anyone link me to the PSPLink source code? I've found it supprisingly hard to find the source code anywhere, except ps2dev's svn, which is throwing errors for me at the moment.

Thanks.
-Aura

What I gave should work in Kernel and User modes.
And the ps2dev repository is WHERE you get the PSPLink source code.

If you just want the basic buttons checked, do
if (pad.Buttons & 0xFFFF)
if you need VOLUP/DOWN, SCREEN and NOTE button too, then you need 0xF0FFFF. For HOME button too, 0xF1FFFF.

Zitat:

---

Zitat von Archaemic

What I gave should work in Kernel and User modes.
And the ps2dev repository is WHERE you get the PSPLink source code.

---

Aww... I've not used the svn commands in Cygwin before, so that could be why I'm getting problems, I found on ps2dev.org that it was

Code:

---

svn co svn://svn.pspdev.org/branch/psplinkusb

---

but when I entered this I was told there was no repository found, am I doing something here?

-Aura

svn co svn://svn.pspdev.org/psp/branch/psplinkusb

That should be the right directory (note the added /psp)