C/C++ Programming Help Thread

[LegendMythe]

Does some1 knows the code ore a sample to printf the mobo of the psp, the firmware and the available RAM(i got a slim if it's necessary)???And which files should I include?

BTW Sorry for double post

[LegendMythe]

does anyone know how to clear the ram ?

Why do you want to clear the RAM cause if you clear it your program stops working, not?Ore do you want to clear a part of the RAM?

[mootjeuh]

Does some1 knows the code ore a sample to printf the mobo of the psp, the firmware and the available RAM(i got a slim if it's necessary)???And which files should I include?

to get the CFW version and the available RAM, you could do this:

#include <pspsysmem.h>
#include <stdio.h>
#include <stdlib.h>

char getFWversion()
{
	int ver = sceKernelDevkitVersion();
	char *aStr;
	char buffer[16];
	sprintf(buffer, "%x", ver);
	buffer[1]='.'; buffer[3] = buffer[4]; buffer[4] = 0;
	aStr = buffer;
	return aStr;
}

int getFreeRAM()
{
	void *buf[64];
	int i;
	for(i = 0; i < 64; i++) {
		buf[i] = malloc(1024*1024);
		if(!buf[i]) break;
	}
	int result = i;
	for(; i >= 0; i--) {
		free(buf[i]);
	}
	return (result*1024*1024);
}

//later on:

int main(void)
{
	//somewhere in your code:
	pspDebugScreenInit();
	pspDebugScreenSetXY(0,0);
	pspDebugScreenPrintf("Your CFW version is: %s.\n", getFWversion());
        pspDebugScreenPrintf("There's %i of available RAM.", getFreeRAM());
}

BTW i replied some1 and now there are 2 of my post does this count as double post???

yes

Why do you want to clear the RAM cause if you clear it your program stops working, not?Ore do you want to clear a part of the RAM?

I want to clear the unused part of the RAM, the "junk", "grabage", etc.

[LegendMythe]

Ty but don't i need a lib in my makefile?Cause if i compile I get some errors:
main.c: In function 'getFWversion':
main.c:25: warning: return makes integer from pointer without a cast
main.c: In function 'main':
main.c:78: warning: format '%s' expects type 'char *', but argument 2 has type '
int'
main.c: In function 'getFWversion':
main.c:26: internal compiler error: Segmentation fault

If some1 knows a way to read the mobo of the psp please pm me ore something...

[mootjeuh]

Ty but don't i need a lib in my makefile?Cause if i compile I get some errors:
main.c: In function 'getFWversion':
main.c:25: warning: return makes integer from pointer without a cast
main.c: In function 'main':
main.c:78: warning: format '%s' expects type 'char *', but argument 2 has type '
int'
main.c: In function 'getFWversion':
main.c:26: internal compiler error: Segmentation fault

If some1 knows a way to read the mobo of the psp please pm me ore something...

I've never heard of an internal compiler error, and I suppose that you 26th line is "}", so you should try compiling with another compiler, try minPSPw ;)

[LegendMythe]

I've never heard of an internal compiler error, and I suppose that you 26th line is "}", so you should try compiling with another compiler, try minPSPw ;)

I already use pspmini :)
I found something i changed the char getFWversion()
{...} to char* getFWversion()
{...} and now I can compile it but the program say my firmware is 9fbfdd8 and i have 5.50GEN-3.
I tried changing printf("Your CFW version is: %s.\n\n\n", getFWversion()); to printf("Your CFW version is: %x.\n\n\n", getFWversion()); like the char* getFWversion and now it says that my firmware is "9fbfdd8"...

[_df_]

BTW the RAM works fine but it give it in bytes i want it in mb is there a way to change it like %i : 1000000

go learn a few C tutorials before trying to hack on the psp.

what is the ratio between a byte, kilobyte and megabyte... just think about how you would convert one to the other..

[LegendMythe]

go learn a few C tutorials before trying to hack on the psp.

what is the ratio between a byte, kilobyte and megabyte... just think about how you would convert one to the other..

Yea i just found how i needed to do that sorry and wtf do you mean with "what is the ratio between a byte, kilobyte and megabyte... just think about how you would convert one to the other.." Do you mean if i know that 1kb is 1/1024 mb?

[mootjeuh]

I already use pspmini :)
I found something i changed the char getFWversion()
{...} to char* getFWversion()
{...} and now I can compile it but the program say my firmware is 9fbfdd8 and i have 5.50GEN-3.
I tried changing printf("Your CFW version is: %s.\n\n\n", getFWversion()); to printf("Your CFW version is: %x.\n\n\n", getFWversion()); like the char* getFWversion and now it says that my firmware is "9fbfdd8"...

you shouldn't use GEN for developing, the pspsdk doesn't work that well on it, try moving to M33 ;)

[_df_]

Yea i just found how i needed to do that sorry and wtf do you mean with "what is the ratio between a byte, kilobyte and megabyte... just think about how you would convert one to the other.." Do you mean if i know that 1kb is 1/1024 mb?

wtf do I mean? I mean go do some tuts as you dont seem to know jack ****. and yeah if you know 1kb is 1/1024 mb... you still have not realised thats your freaking answer... isnt it nice when you figure things out on your own... :Argh:

[LegendMythe]

wtf do I mean? I mean go do some tuts as you dont seem to know jack ****. and yeah if you know 1kb is 1/1024 mb... you still have not realised thats your freaking answer... isnt it nice when you figure things out on your own... :Argh:

Dude...Why the f*ck do you think this thread is called a freaking HELP thread.If you don't want to help people and you hate asking for help then go to the discusion(which isn't this thread!!!) thread!:Argh:
BTW i can figure stuff out on my on, but this i couldn't thats why I came to the freaking HELP thread!

Anayways ty for evryone that helpt...

[hallo007]

ioFunctions/search.o: In function `searchForFile':
search.c:(.text+0x2b8): undefined reference to `free'
search.c:(.text+0x47c): undefined reference to `malloc'
ioFunctions/fileBrowser.o: In function `recacheGameDir':
fileBrowser.c:(.text+0xa0): undefined reference to `free'
fileBrowser.c:(.text+0xdc): undefined reference to `memalign'
ioFunctions/fileBrowser.o: In function `fileBrowser':
fileBrowser.c:(.text+0x278): undefined reference to `free'
fileBrowser.c:(.text+0x560): undefined reference to `malloc'

Never seen this error before , it happens while using the 4.XX m33 SDK , anyone know the solution?

[LegendMythe]

ioFunctions/search.o: In function `searchForFile':
search.c:(.text+0x2b8): undefined reference to `free'
search.c:(.text+0x47c): undefined reference to `malloc'
ioFunctions/fileBrowser.o: In function `recacheGameDir':
fileBrowser.c:(.text+0xa0): undefined reference to `free'
fileBrowser.c:(.text+0xdc): undefined reference to `memalign'
ioFunctions/fileBrowser.o: In function `fileBrowser':
fileBrowser.c:(.text+0x278): undefined reference to `free'
fileBrowser.c:(.text+0x560): undefined reference to `malloc'

Never seen this error before , it happens while using the 4.XX m33 SDK , anyone know the solution?

It means that the program doesn't know what"free" "memalign" "malloc"...Maybe you didn't defined a file ore included a lib in the makefile...

[hallo007]

It means that the program doesn't know what"free" "memalign" "malloc"...Maybe you didn't defined a file ore included a lib in the makefile...

Ofcourse , I understand the error...
Just dunno which lib , never knew "malloc" needed a lib...

[mootjeuh]

ioFunctions/search.o: In function `searchForFile':
search.c:(.text+0x2b8): undefined reference to `free'
search.c:(.text+0x47c): undefined reference to `malloc'
ioFunctions/fileBrowser.o: In function `recacheGameDir':
fileBrowser.c:(.text+0xa0): undefined reference to `free'
fileBrowser.c:(.text+0xdc): undefined reference to `memalign'
ioFunctions/fileBrowser.o: In function `fileBrowser':
fileBrowser.c:(.text+0x278): undefined reference to `free'
fileBrowser.c:(.text+0x560): undefined reference to `malloc'

Never seen this error before , it happens while using the 4.XX m33 SDK , anyone know the solution?

seems that you didn't include <stdlib.h> and <stdio.h>, try putting this at the first line of your .c :

#include <stdlib.h>
#include <stdio.h>

but I highly doubt it's coming from your .c, I'm guessing you don't have them in your Makefile but that impossible coz they're standard C files, could you post your Makefile?

Ofcourse , I understand the error...
Just dunno which lib , never knew "malloc" needed a lib...

yeah, that's the weird part, it DOESN'T need a lib


OR, either your compiler or/and pspsdk is/are screwed up

[slicer4ever]

yes

I want to clear the unused part of the RAM, the "junk", "grabage", etc.

good memory managment and you don't need to clear the RAM, if ur refering to the data not allocated yet(i.e. u wanna cover your tracks or something) then simply calculate the remaining ram, and create an array that size, then randomize and/or set it to 0, however anything in use should NEVER be cleared that isn't your's(plus their's protection against doing it), nothing is junk when it's in use by another program

[slicer4ever]

I'm sure this could be simplified:

	lonwork = limit_left;
	latwork = limit_top;
	while (lonwork < displon) {lonwork = lonwork + zoom; xxx++;}
	while (latwork > displat) {latwork = latwork - zoom; yyy++;}

I just have a block.
It's all about incrementing xxx and yyy the correct number of times.
Any ideas?

xxx+=(displon-lonwork)/zoom
lonwork += (displon-lonwork)*zoom;
yyy+=(latwork-displat)/zoom
latwork -= (latwork-displat)*zoom;

that should work, however more of a description would help, however this can lead to problems(division by 0, or floating point->int(assuming these are int's) errors, and of course the while loop ensures negative doesn't happen, this doesn't, some some checks can take away your problems)

edit: opps, double post my bad

edit:

Dude...Why the f*ck do you think this thread is called a freaking HELP thread.If you don't want to help people and you hate asking for help then go to the discusion(which isn't this thread!!!) thread!:Argh:
BTW i can figure stuff out on my on, but this i couldn't thats why I came to the freaking HELP thread!

Anayways ty for evryone that helpt...

Legend, if your output is in bytes, and you want it to be in mb's, than you must convert from bytes->kbytes->mb's, that is what DF is attempting to say(although he should not have acted out in anger against you), however also listen to the people here, and don't act out against them as well

[hallo007]

seems that you didn't include <stdlib.h> and <stdio.h>, try putting this at the first line of your .c :

#include <stdlib.h>
#include <stdio.h>

but I highly doubt it's coming from your .c, I'm guessing you don't have them in your Makefile but that impossible coz they're standard C files, could you post your Makefile?

yeah, that's the weird part, it DOESN'T need a lib


OR, either your compiler or/and pspsdk is/are screwed up

No I dindt forget to include them, so here is my Makefile:

TARGET = test
OBJS = main.o \
       menu.o \
       audio/audio.o \
       ioFunctions/search.o \
       ioFunctions/fileBrowser.o \
	   exports.o
	   
INCDIR = ../../include
CFLAGS = -O2 -Os -G0 -Wall -fshort-wchar -fno-pic -mno-check-zero-division 
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

BUILD_PRX = 1
PRX_EXPORTS = exports.exp

USE_KERNEL_LIBC = 1
USE_KERNEL_LIBS = 1

PSP_FW_VERSION = 371

LIBDIR = ../../lib
LIBS =             -lpsprtc         \
                  -lpspwlan        \
                  -lstdc++         \
                  -lpsputility     \
                  -lpsppower       \
                  -lpspgu          \
                  -lpng            \
                  -lz              \
                  -lm              \
                  -lmad            \
                  -lpspaudiolib    \
                  -lpspaudio       \
                  -lpspusb         \
                  -lpspusbstor     \				 
				  -lpspmp3

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

[slicer4ever]

No I dindt forget to include them, so here is my Makefile:

TARGET = test
OBJS = main.o \
       menu.o \
       audio/audio.o \
       ioFunctions/search.o \
       ioFunctions/fileBrowser.o \
	   exports.o
	   
INCDIR = ../../include
CFLAGS = -O2 -Os -G0 -Wall -fshort-wchar -fno-pic -mno-check-zero-division 
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

BUILD_PRX = 1
PRX_EXPORTS = exports.exp

USE_KERNEL_LIBC = 1
USE_KERNEL_LIBS = 1

PSP_FW_VERSION = 371

LIBDIR = ../../lib
LIBS =             -lpsprtc         \
                  -lpspwlan        \
                  -lstdc++         \
                  -lpsputility     \
                  -lpsppower       \
                  -lpspgu          \
                  -lpng            \
                  -lz              \
                  -lm              \
                  -lmad            \
                  -lpspaudiolib    \
                  -lpspaudio       \
                  -lpspusb         \
                  -lpspusbstor     \				 
				  -lpspmp3

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

if your working with c++, why are u using free/malloc over new/delete?

[hallo007]

mayby the second error can help you:

/usr/local/pspdev/psp/sdk/lib/libpspdebug.a(pspDebugScreenInit.o): In function `
pspDebugScreenInitEx':
/home/Roel/psptoolchain/build/pspsdk/src/debug/scr_printf.c:141: undefined refer
ence to `sceGeEdramGetAddr'
/usr/local/pspdev/psp/sdk/lib/libpspdebug.a(pspDebugScreenPrintf.o): In function
 `pspDebugScreenPrintf':
/home/Roel/psptoolchain/build/pspsdk/src/debug/scr_printf.c:432: undefined refer
ence to `vsnprintf'
collect2: ld returned 1 exit status

this error gives me the feeling that my sdk is screwed up

[hallo007]

if your working with c++, why are u using free/malloc over new/delete?

i'm not working in c++ at the moment , forget to delete the c++ lib , I'm just testing different things at the moment , and I'm to lazy to open a new project , so there will be things that arent needed

[mootjeuh]

yeah, your SDK is definitely screwed up ;) if you're on Windows, install minPSPw

[_df_]

Dude...Why the f*ck do you think this thread is called a freaking HELP thread.If you don't want to help people and you hate asking for help then go to the discusion(which isn't this thread!!!) thread!:Argh:
BTW i can figure stuff out on my on, but this i couldn't thats why I came to the freaking HELP thread!

Anayways ty for evryone that helpt...

I did help you, I pointed you in the right direction, I just didn't give you a cut and paste answer that you wanted. I asked you a simple question on the ratio of bytes to kb to mb (basically telling you you need to divide one to the other) and you got all "WTF!" in my face for giving you the answer.

Yeah, this is a help thread, remember that when you want to get all hostile and "WTF" in peoples faces.

[ButMan]

This is maybe something noby but I can't make it work...
I followed one of the tuts for making a menu with graphics.h.Now I want to add to the menu that when i press a button like cross that it makes the screen clear and print something on it.But now i tried that but i now have to hold X...

My code:

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

	SceCtrlData pad;

	while(1) {
		sceCtrlReadBufferPositive(&pad,1);
		fillScreenRect(white,0,0,480,272);
		timer++;
              
        for(foo=0;foo<10;foo++) {
		if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
		printTextScreen(200,foo*10+70,menuItems[foo],black);
		}
		printTextScreen(200,select*10+70,menuItems[select],red);

		
		if((pad.Buttons & PSP_CTRL_UP) && (timer > 10) && (select > 0)) {
			select--;
			timer = 0;
		} else if ((pad.Buttons & PSP_CTRL_DOWN) && (timer > 10) && (select < 9)) {
			select++;
			timer = 0;
		}
		if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
		pspDebugScreenClear();//if add pspdebug.h and stuff
                printf("blablabla");//I defined printf to
        flipScreen();
        sceDisplayWaitVblankStart();

	}
	return 0;
    }

[slicer4ever]

This is maybe something noby but I can't make it work...
I followed one of the tuts for making a menu with graphics.h.Now I want to add to the menu that when i press a button like cross that it makes the screen clear and print something on it.But now i tried that but i now have to hold X...

My code:

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

	SceCtrlData pad;

	while(1) {
		sceCtrlReadBufferPositive(&pad,1);
		fillScreenRect(white,0,0,480,272);
		timer++;
              
        for(foo=0;foo<10;foo++) {
		if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
		printTextScreen(200,foo*10+70,menuItems[foo],black);
		}
		printTextScreen(200,select*10+70,menuItems[select],red);

		
		if((pad.Buttons & PSP_CTRL_UP) && (timer > 10) && (select > 0)) {
			select--;
			timer = 0;
		} else if ((pad.Buttons & PSP_CTRL_DOWN) && (timer > 10) && (select < 9)) {
			select++;
			timer = 0;
		}
		if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
		pspDebugScreenClear();//if add pspdebug.h and stuff
                printf("blablabla");//I defined printf to
        flipScreen();
        sceDisplayWaitVblankStart();

	}
	return 0;
    }

it's called states, diffrent states of the game, reflect diffrent things to happen:

int main() {
	SetupCallbacks();
	initGraphics();
	pspDebugScreenInit();
	SceCtrlData pad;
	int State=0;
	while(1){
		sceCtrlReadBufferPositive(&pad,1);
		fillScreenRect(white,0,0,480,272);
		if(State==0){
			timer++;
			for(foo=0;foo<10;foo++) {
				if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
					printTextScreen(200,foo*10+70,menuItems[foo],black);
				}
				printTextScreen(200,select*10+70,menuItems[select],red);
				if((pad.Buttons & PSP_CTRL_UP) && (timer > 10) && (select > 0)) {
					select--;
					timer = 0;
				} else if ((pad.Buttons & PSP_CTRL_DOWN) && (timer > 10) && (select < 9)) {
					select++;
					timer = 0;
				}
				if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
					State=1;
				}
			}
		}else if(State==1){
			printf("blablabla");//I defined printf to
			flipScreen();
			if(pad.Buttons&PSP_CTRL_CIRCLE){
				State=0;
			}
		}
	}
	return 0;
}

hope this helps

[Raphael]

No I dindt forget to include them, so here is my Makefile:

TARGET = test
OBJS = main.o \
       menu.o \
       audio/audio.o \
       ioFunctions/search.o \
       ioFunctions/fileBrowser.o \
       exports.o
       
INCDIR = ../../include
CFLAGS = -O2 -Os -G0 -Wall -fshort-wchar -fno-pic -mno-check-zero-division 
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)

BUILD_PRX = 1
PRX_EXPORTS = exports.exp

USE_KERNEL_LIBC = 1
USE_KERNEL_LIBS = 1

PSP_FW_VERSION = 371

LIBDIR = ../../lib
LIBS =             -lpsprtc         \
                  -lpspwlan        \
                  -lstdc++         \
                  -lpsputility     \
                  -lpsppower       \
                  -lpspgu          \
                  -lpng            \
                  -lz              \
                  -lm              \
                  -lmad            \
                  -lpspaudiolib    \
                  -lpspaudio       \
                  -lpspusb         \
                  -lpspusbstor     \                 
                  -lpspmp3

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

Linking KERNEL_LIBC is a bad idea if you don't know what you're doing. Remove that line, so that normal libc (newlib) is linked, then you'll have access to all libc functions as normal, including malloc and free.

[Raphael]

mayby the second error can help you:

/usr/local/pspdev/psp/sdk/lib/libpspdebug.a(pspDebugScreenInit.o): In function `
pspDebugScreenInitEx':
/home/Roel/psptoolchain/build/pspsdk/src/debug/scr_printf.c:141: undefined refer
ence to `sceGeEdramGetAddr'
/usr/local/pspdev/psp/sdk/lib/libpspdebug.a(pspDebugScreenPrintf.o): In function
 `pspDebugScreenPrintf':
/home/Roel/psptoolchain/build/pspsdk/src/debug/scr_printf.c:432: undefined refer
ence to `vsnprintf'
collect2: ld returned 1 exit status

this error gives me the feeling that my sdk is screwed up

The second error comes from linking KERNEL_LIBC again, the first one because you didn't #include in your source file.

[ButMan]

it's called states, diffrent states of the game, reflect diffrent things to happen:

if to
			flipScreen();
			if(pad.Buttons&PSP_CTRL_CIRCLE){
				State=0;
			}
		}
	}
	return 0;
}

hope this helps

it doesn't really work it flashes between white and black and my menu options won't show up...Is there an other way?

[slicer4ever]

it doesn't really work it flashes between white and black and my menu options won't show up...Is there an other way?

well, look at the code, it's designed to do that, when state = 0, then show the menu, when state = 1 it'll print the words out(which is what i thought u originally wanted to happen)

now then, if u want both menu and text, but without holding the button think about what you'd have to do:

1. detect when x is pressed(u've already done that)
2. set a variable saying x has been pressed
3. check if that variable is set, if so print the string aswell as the menu

it's not hard, bit of logic and variable handling=-), it's similar to how states work, but inside the menu code itself=-)

[ButMan]

well, look at the code, it's designed to do that, when state = 0, then show the menu, when state = 1 it'll print the words out(which is what i thought u originally wanted to happen)

now then, if u want both menu and text, but without holding the button think about what you'd have to do:

1. detect when x is pressed(u've already done that)
2. set a variable saying x has been pressed
3. check if that variable is set, if so print the string aswell as the menu

it's not hard, bit of logic and variable handling=-), it's similar to how states work, but inside the menu code itself=-)

Yea i know and it works thanks but now when i have pressed X it works but the background keep flashing from white to black.And only the first menu item is showd, but when i go down the next buttons show but the first option is still in the select color...It's kinda weird got some suggestions?
code:

int main() {
	SetupCallbacks();
	initGraphics();
	pspDebugScreenInit();
	SceCtrlData pad;
	int State=0;
	State=0;
	while(1){
		sceCtrlReadBufferPositive(&pad,1);
		
		if(State==0){
			timer++;
			for(foo=0;foo<10;foo++) {
				if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
					printTextScreen(200,foo*10+70,menuItems[foo],black);
				}
				printTextScreen(200,select*10+70,menuItems[select],red);
				if((pad.Buttons & PSP_CTRL_UP) && (timer > 10) && (select > 0)) {
					select--;
					timer = 0;
				} else if ((pad.Buttons & PSP_CTRL_DOWN) && (timer > 10) && (select < 9)) {
					select++;
					timer = 0;
				}
				if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
					State=1;
				}
			flipScreen();
			}
		}else if(State==1){
			pspDebugScreenClear();
			printTextScreen(5,5, "blabla", red);
			flipScreen();
			sceDisplayWaitVblank();
			if(pad.Buttons&PSP_CTRL_CIRCLE){
				pspDebugScreenClear();
				State=0;
			}
		}
			if((pad.Buttons & PSP_CTRL_CROSS) && (select == 0)) {
		State==1;
		}
	
	}
	return 0;
}