sceHprmEnd, sceSysregUartIoEnable documentation

[bubugian]

I'm new with psp programming so please be patient if my questions are banal.

Looking for SIO prx code sample I found a Fanjita's sio sample that make this calls:

Code: Select all

void _sioInit(void)
{
        sceHprmEnd();
        sceSysregUartIoEnable(4);
        sceSysconCtrlHRPower(1);
} 

I start to understand what sceHprmEnd (and ather) call do but I did not find any documentation. Not even inside sdk's header files.
Function prototype are declared at the top of code so I imagine locator will know (and solve) addresses to call..
Is there some function docs ? Where ?
Prefix 'sce' stand for Sony's api?

Will this lines:

Code: Select all

USE_KERNEL_LIBC=1
USE_KERNEL_LIBS=1 

indicate to use 'sce' functions?

I'd like to develop an application (prx) that will use RS232. I found some sample code here in ps2dev and I'll appreciate any suggestion on working prx code with CF 5.

Thanks very much for your help!

[jimparis]

I start to understand what sceHprmEnd (and ather) call do but I did not find any documentation. Not even inside sdk's header files.
Function prototype are declared at the top of code so I imagine locator will know (and solve) addresses to call..
Is there some function docs ? Where ?
Prefix 'sce' stand for Sony's api?

Yes, they are provided by Sony in the PSP kernel. In the compiled binary, it's referenced by its NID which is found in src/hprm/sceHprm_driver.S in the SDK.

This particular function isn't documented, but some other documentation for sceHprm stuff is at http://psp.jim.sh/pspsdk-doc/group__Hprm.html

Will this lines:

Code: Select all

USE_KERNEL_LIBC=1
USE_KERNEL_LIBS=1 

indicate to use 'sce' functions?

Those are unrelated, they just tell the compiler/linker that you want to use Sony's built-in libc functions rather than the ones provided by newlib.

I'd like to develop an application (prx) that will use RS232. I found some sample code here in ps2dev and I'll appreciate any suggestion on working prx code with CF 5.

See http://forums.ps2dev.org/viewtopic.php?p=58653

[bubugian]

Thanks Jim for your help.

Those are unrelated, they just tell the compiler/linker that you want to use Sony's built-in libc functions rather than the ones provided by newlib.

Is it necessary to specify in makefile to use 'sce' functions? Where ?
Is it possible to use a sort of overload of sce f ?

Many thanks.

[ab5000]

Thanks Jim for your help.

Those are unrelated, they just tell the compiler/linker that you want to use Sony's built-in libc functions rather than the ones provided by newlib.

Is it necessary to specify in makefile to use 'sce' functions? Where ?
Is it possible to use a sort of overload of sce f ?

Many thanks.

normally (without that lines) you use newlib (pspsdk libc). If you specify that in the makefile, your homebrew will use firmware libc.
sce* functions are ALWAYS avaiable. if you compile with newlib, fopen (for example) will be built-in in your app, if you compile with sce libc, it'll be called from a firmware module. sometimes (for example when you use VLF) you can't use newlib, so you need sce libc.

[slasher2661996]

Thanks Jim for your help.

Those are unrelated, they just tell the compiler/linker that you want to use Sony's built-in libc functions rather than the ones provided by newlib.

Is it necessary to specify in makefile to use 'sce' functions? Where ?
Is it possible to use a sort of overload of sce f ?

Many thanks.

You ALWAYS need a makefile.
And you could always hook the functions