How to use sceDisplayDisable on newer firmware?

liberty · Post by **liberty** » Sun Sep 20, 2009 10:30 am

I am using PSP 3001 with 5.03 firmware.
I try to use sceDisplayDiable / sceDisplayEnable. But if I link against the pspdisplay-driver, the program won't even start. It give an error.

Anyone here know how to disable/enable display on newer kernel like mine?

Torch · Post by **Torch** » Tue Sep 22, 2009 5:00 am

Call it from a kernel module.

liberty · Post by **liberty** » Tue Sep 22, 2009 5:07 am

Torch wrote:Call it from a kernel module.

How to? Is there a sample?

sakya · Post by **sakya** » Tue Sep 22, 2009 8:23 am

Hi! :)

liberty wrote:
Torch wrote:Call it from a kernel module.
How to? Is there a sample?

Yes, the prx you are using in your cueplayer. :D

Code: Select all

PSP_EXPORT_FUNC&#40;displayEnable&#41;
PSP_EXPORT_FUNC&#40;displayDisable&#41;

Ciaooo
Sakya

liberty · Post by **liberty** » Wed Sep 23, 2009 1:29 am

sakya wrote:Hi! :)

liberty wrote:
Torch wrote:Call it from a kernel module.
How to? Is there a sample?
Yes, the prx you are using in your cueplayer. :D
Code: Select all
PSP_EXPORT_FUNC&#40;displayEnable&#41;
PSP_EXPORT_FUNC&#40;displayDisable&#41;
Ciaooo
Sakya

I tried compiling that prx, that is the one in your lightmp3. But it is linking aginst the pspsystemctrl_kernel. My SDK does not have this library.

If I uses your compiled support.prx and supportlib.o directly. The cueplayer can run, but the displayDisable is not working.

sakya · Post by **sakya** » Wed Sep 23, 2009 1:52 am

Hi! :)

Here you can find a kernel prx sample:
http://www.sakya.it/downloads/testPer352.rar

The sample is about sceDisplayGetBrightness and sceDisplaySetBrightness
It shouldn't be difficult to modify it. ;)

Ciaooo
Sakya

liberty · Post by **liberty** » Wed Sep 23, 2009 12:21 pm

sakya wrote:Hi! :)

Here you can find a kernel prx sample:
http://www.sakya.it/downloads/testPer352.rar

The sample is about sceDisplayGetBrightness and sceDisplaySetBrightness
It shouldn't be difficult to modify it. ;)

Ciaooo
Sakya

Thank you very very much. I get it working now and updated my cueplayer. One more thing to ask:
How to know these addresses in:
STUB_FUNC 0xAC18FDEC,displayEnable
STUB_FUNC 0xDA2E4C8C,displayDisable
or
IMPORT_FUNC "sceDisplay_driver",0x946155FD,sceDisplayEnable371
IMPORT_FUNC "sceDisplay_driver",0x32B67781,sceDisplayDisable371

sakya · Post by **sakya** » Wed Sep 23, 2009 10:16 pm

Hi! :)

liberty wrote:How to know these addresses in:
STUB_FUNC 0xAC18FDEC,displayEnable
STUB_FUNC 0xDA2E4C8C,displayDisable
or
IMPORT_FUNC "sceDisplay_driver",0x946155FD,sceDisplayEnable371
IMPORT_FUNC "sceDisplay_driver",0x32B67781,sceDisplayDisable371

The supportlib.S file is generated with the command:

Code: Select all

psp-build-exports -s file.exp

The address for other .S file are here:
http://silverspring.lan.st/

Ciaooo
Sakya

liberty · Post by **liberty** » Fri Sep 25, 2009 12:50 am

sakya wrote:Hi! :)

liberty wrote:How to know these addresses in:
STUB_FUNC 0xAC18FDEC,displayEnable
STUB_FUNC 0xDA2E4C8C,displayDisable
or
IMPORT_FUNC "sceDisplay_driver",0x946155FD,sceDisplayEnable371
IMPORT_FUNC "sceDisplay_driver",0x32B67781,sceDisplayDisable371
The supportlib.S file is generated with the command:
Code: Select all
psp-build-exports -s file.exp
The address for other .S file are here:
http://silverspring.lan.st/

Ciaooo
Sakya

Thank you very much! It seems that I know how it it is working now somehow.