Yes, the difference in what I posted was what is sent to IOMUX_SetPwmPort(). It should be unrelated, but since it sets bits in RegIOMuxB just like IOMUX_SetI2SType(), plus, it's a difference between good and bad FW, it might be worth a look. I'd test it if I could, but I'm not that far along.

I've read about Pin 18 (where the 0x40000 is sent) on RegIOMuxB, but I can't figure out exactly what it does:

sdtaddr12_gpiof_sel (SDT/GPIO IO MUX control)
0: sdt addr12 1: gpiof

Doesn't look like it would affect audio, but doesn't look much like it would be a PWM port, either.

It looks like sending 0x40000 to RegIOMuxA disables the internal codec. But that doesn't happen, it just caught my eye in the docs.

Can someone tell me, in the SDK, where the initial code is that spawns the GUI code. If I trace from main() or the linker's entry point, I never reach the GUI. Where is all this spawned, exactly?

Maybe from some message-handler. I guess as soon as this RockCoreStart() is called the OS takes over. This should all be in the source.

Working Links
 

Please read this topic:
http://mympx.org/forum/general-discu...ing-links.html

P.S. Also test the new Wolf3D engine for Rockchips (3D Graphics! :eek: Awesome!)
http://ypokhilko.vn.ua/apps/

Wolf3D
 

Let's test the new Wolf3D v0.2 demo-alpha version ! :rolleyes:
http://ypokhilko.vn.ua/apps/

P.S. I'll make an update to the Games&Apps archive soon.
As you see, my links are to the Folders not to Archives;
so the links will not become broken again.

v0.3
 

New Wolf3D v0.3 is available now. Test, please. :rolleyes:

Where can I get RK26 SDK
 

Where can I get RK26 SDK? How can I get started to develop? Do I need a special firmware? Do I need a JTAG? Does the MP4 has a USB bootloader by default? How can I enable it?

Thanks.

Download
 

Download links for SDK:
http://mympx.org/forum/general-discu...ing-links.html

Looks like I have to read the 47 pages to get what I am looking for. I appreciate if a kind wizard guide me to start development. I am experienced embedded system developer and I think this platform is good to play with.

1) I have a player with 2608a chip, can I develop for it?
2) I am more into modifying the firmware (at least the main menu) as well as developing new applications/games. Is that possible?
3) What compiler should I use? Can GCC for ARM do it?
4) In what page, in this thread, should I start reading (47 pages are too much to follow)
5) Any instructions on how to compile and build games?
6) Any instructions on how to compile/build the firmware? I know there is a custom firmware around , where can I get it.

Thanks for you all for the great job!

I think so, the folder "RK225_Dict" (in the SDK archive) contains the rk2608 firmware afaik.
The firmware is in there (see above).
I havent been working on the rk2608 but I think its a 8051 + zsp400 dsp combo. So you will need those compilers.
I recommend reading the source and I think there is a rk2608 datasheet available somewhere.
Ask wizard or knob, I think there is some special app available that lets you compile rkp-games.
There should be some kind of Makefile or project file in the firmware source so you might just try that.

Regards