C/C++ Programming Help Thread

[Kwastie]

what's diffrents with wait(60); = 1 second and your way?

I know how I can get nickname, but what do I have to add to:

int menuPrintf(char *string, u32 color) {
pspDebugSetTextColor(colo r);
return printf("%s",string);
}
so I can alsow print nickname; nickname is stored in nameBuffer max 11 chars

Something like: hello, "nickname" welcome to my program,

[hallo007]

void menuPrintf(char *string, u32 color,...)
{
      pspDebugSetTextColor(colo r);
      va_list arguments;
      va_start(arguments, text );  
      printf(string , arguments);  
      va_end( arguments );

}

USE CODE TAGS!!!!!!!!!!!!!!!!

[Kwastie]

sorry for not using code taggs,
you code doesn't work , i am getting some serieus error's
all the va_.. arn't decleared

[hallo007]

#include <stdarg.h>

[Kwastie]

ok i'll test it ;)
edit:
it doesn't work
i am getting these errors, they are in dutch but hallo007 you are dutch(belgian) to so you will understand it

[email protected]:~/Projecten/Flash Magic$ make kxploit
psp-gcc -I. -I/usr/local/pspdev/psp/sdk/include -O2 -G0 -Wall -D_PSP_FW_VERSION=150   -c -o main.o main.c
main.c: In functie ‘printc’:
main.c:166: fout: ‘text’ is hier niet gedeclareerd (eerste gebruik in deze functie)
main.c:166: fout: (Elke niet-gedeclareerde naam wordt slechts één
main.c:166: fout: keer vermeld voor elke functie waarin hij staat.)
main.c:166: let op: de tweede parameter van ‘va_start’ is niet het laatste benoemde argument
main.c: In functie ‘main’:
main.c:668: let op: passing argument 2 of ‘printc’ makes integer from pointer without a cast
make: *** [main.o] Fout 1
[email protected]:~/Projecten/Flash Magic$ make kxploit
psp-gcc -I. -I/usr/local/pspdev/psp/sdk/include -O2 -G0 -Wall -D_PSP_FW_VERSION=150   -c -o main.o main.c
main.c: In functie ‘printc’:
main.c:166: fout: ‘text’ is hier niet gedeclareerd (eerste gebruik in deze functie)
main.c:166: fout: (Elke niet-gedeclareerde naam wordt slechts één
main.c:166: fout: keer vermeld voor elke functie waarin hij staat.)
main.c:166: let op: de tweede parameter van ‘va_start’ is niet het laatste benoemde argument
main.c: In functie ‘main’:
main.c:668: let op: passing argument 2 of ‘printc’ makes integer from pointer without a cast
make: *** [main.o] Fout 1

[hallo007]

you use somewhere a variabel text without doing this:
int text
char *text
bool text
char text[]
char *text[]
...

[Kwastie]

hmm somewere, everywere.. XD :S lol

[Archaemic]

C is strongly typed, so you need to declare all of your variables. Otherwise, it won't know what type they are.

[Kwastie]

i realy don't understand it.. are all those C/C++ tutorails wrong .. they never talked about it

[hallo007]

if you dont know that I think you better search another hobby

[Moca]

i realy don't understand it.. are all those C/C++ tutorails wrong .. they never talked about it

The tutorials are fine. With that attitude, you wont get anywhere.

[Kwastie]

am just started to code 2 or 3 weeks ago, already created theme flasher.. callculator and mp3 player.. but i need some help.. because i don't know all the commands yet i know to little

[SuperBatXS]

am just started to code 2 or 3 weeks ago, already created theme flasher.. callculator and mp3 player.. but i need some help.. because i don't know all the commands yet i know to little

Lol, mp3 player and calculator took me 2 days when i starting learning C. Theme flasher sounds hard though.

[Kwastie]

maby you can look at my code.. maby you can find the error
and lol do you think a spend 2-3 weeks @ coding lol i am still going to school and i don't have much spare-time tough..i think i've spended about 40-60 hours total.. on C.. i need to add an nice qui to my program because the menu i am using now SUCKS.. only black with white letters

[SuperBatXS]

maby you can look at my code.. maby you can find the error

Lol, i don't know what you are talking about, i just looked at one post. Could you tell me what you are talking about?

[Kwastie]

theme flasher;)

[SuperBatXS]

theme flasher;)

I can't help ya then. Sorry.
-= Double Post =-
Is there a function that lets you go on standby? Is there also a function that lets you fully turn off your psp? What are these functions? Also, what do i need to put in the makefile if i need to use these functions.

[Moca]

I can't help ya then. Sorry.
-= Double Post =-
Is there a function that lets you go on standby? Is there also a function that lets you fully turn off your psp? What are these functions? Also, what do i need to put in the makefile if i need to use these functions.

Take a look at psppower.h in the psp sdk

makefile...

LIBS = -lpsppower

[Xylem]

Hi,
It's been a while since i developed because i was on vacation earlier this weekend. Anyways, i had a question. What if i wanted to auto-detect if the usb plug is in, and if it is, it would activate usb mode? Using this:
Post some C samples

Do i just do "Activate_usb();" in my function, and it will always keep usb mode on, and auto detect it by itself?

Thanks.

[Mr305]

The same can be done with the psp. Dont wait for the vblank, or else you will be skipping entire frames with the gu sitting idle doing nothing...instead try out this little snippet of code:
Code:

#include <psprtc.h> 
float ftime() { 
u64 tick; 
u32 count = sceRtcGetTickResolution(); 
sceRtcGetCurrentTick(&tick);
return (float)((u32)tick)/(float)count; 
}

in your main loop: 
float fstart, fstop; 
while (1) 
{ 
fstart = ftime(); 
do your normal stuff but *DONT* do sceDisplayWaitVblankStart 
fstop = ftime(); 
float frametime = (fstop-fstart) * 60.0f; 
update vars based on frametime value 
}

Here, frametime will be a value around 1.0..1.0 being ideal if the code ran within one frames time. values less than 1 means the frame finished faster, or values greater than 1 means the frame took more than one fps time. Use this to adjust rotations, sprites, text scrollers, etc.

How Do I make things happen only 60 times a second w/out Vblank start?
And what's wrong with using it?
"update vars based on frametime value" what does that mean?

[SuperBatXS]

How Do I make things happen only 60 times a second w/out Vblank start?
And what's wrong with using it?
"update vars based on frametime value" what does that mean?

Make a timer:

int showTime = 0;
	for (;;) {
	    showTime++;
		if (showTime < 60) { // EVERY 60 IS A SECOND //    
                          //insert action here
		}
	}

Btw, i need help using standby:

#define PSP_POWER_CB_STANDBY		0x00080000
//later
    if (pad.Buttons & PSP_CTRL_LTRIGGER) {
                 scePowerRequestStandby();
                 return 0;
    }

It seems to successfully go to standby, but when i turn psp back on, it's in the xmb.

[Moca]

Make a timer:

int showTime = 0;
	for (;;) {
	    showTime++;
		if (showTime < 60) { // EVERY 60 IS A SECOND //    
                          //insert action here
		}
	}

Btw, i need help using standby:

#define PSP_POWER_CB_STANDBY		0x00080000
//later
    if (pad.Buttons & PSP_CTRL_LTRIGGER) {
                 scePowerRequestStandby();
                 return 0;
    }

It seems to successfully go to standby, but when i turn psp back on, it's in the xmb.

Then its not standby :|

No offense, but are you really that clueless... Has it crossed your mind that the PSP might be turned off by using that function :|

[SuperBatXS]

Then its not standby :|

No offense, but are you really that clueless... Has it crossed your mind that the PSP might be turned off by using that function :|

No. When i removed the return0; , it shut off after flashing a couple of times. When i turned it on, it displayed the Sony logo. When i use this function, it goes straight to the XMB. Btw, i have the Sony logo enabled. How do i fix this problem then?

Edit: Let me reword this better-
Without return0; - shut offish turning off (light blinking differently than with return0; ) and sony logo displays when turned on
With return0; - standbyish turning off and xmb displayed when turned back on

[hallo007]

Make a timer:

int showTime = 0;
	for (;;) {
	    showTime++;
		if (showTime < 60) { // EVERY 60 IS A SECOND //    
                          //insert action here
		}
	}

.

or

int x = 0;
while(x != 60)
{
    //do something
    sceKerndelDelayThread(1000000/60);
    x++;
}

[Mr305]

or

int x = 0;
while(x != 60)
{
    //do something
    sceKerndelDelayThread(1000000/60);
    x++;
}

How exactly does WaitVblank start control actual cycles[loops] per second?

[Grimfate126]

How exactly does WaitVblank start control actual cycles[loops] per second?

waitVblankStart simply waits for the psp to finish drawing the current frame. so waitVbalnkStart(60) waits until the frame has been drawn 60 times, which is a seconds at 60FPS. I prefer to use sceKernelDelayThread() though.

[Insert_Witty_Name]

sceDisplayWaitVblankStart () waits for the vsync of the PSP LCD, which happens to be approximately 60 mhz.

[Bronx]

[QUOTE=TMNT]Make a timer:

int showTime = 0;
	for (;;) {
	    showTime++;
		if (showTime < 60) { // EVERY 60 IS A SECOND //    
                          //insert action here
		}
	}

That is the worst "timer" I have ever seen. That's no even a timer, showTime will increase ever frame, not second. You need an actual timer ;)

[SuperBatXS]

[QUOTE=Bronx]

Make a timer:

int showTime = 0;
	for (;;) {
	    showTime++;
		if (showTime < 60) { // EVERY 60 IS A SECOND //    
                          //insert action here
		}
	}

That is the worst "timer" I have ever seen. That's no even a timer, showTime will increase ever frame, not second. You need an actual timer ;)

Thanks Bronx. I will mention to Yaustar or Moca that you said that (one of those made it, search in the thread).

[nataku92]

Thanks Bronx. I will mention to Yaustar or Moca that you said that (one of those made it, search in the thread).

er you mean Grimfate126 made it:

use a counter, its not that different from a timer (in your case, atleast):

int main()

int showTime = 0;

// LOAD IMAGES AND CALLBACKS AND THE OTHER STUFF //

	for (;;) {
	
		if (showTime < 60) { // EVERY 60 IS A SECOND //
			// DISPLAY PICTURE //
			showTime++;
		}
	
		flipSceen();
		sceDisplayWaitVblankStart();
	}

return 0;

}

Also, he used sceDisplayWaitVblankStart , meaning that his code works, and yours doesn't.