HOLY ................................ WOW ! :)
Can you point me on a link to download this SDK ? I guess I don't have that one !!!

WONDERFUL !!

RockCompiler.rar

I uploaded the whole rock compiler. It's the part of FWTools - SDK for RK26XX.

There is no documentation regarding calling these apps although I found out how to call sdcc.exe

I used the following command line to compile RKP stuff. I think the whole package is a modified version of SDCC compiler (SDCC - Small Device C Compiler). I didn't found any info that SDCC support ZSP400, and original sdcc doesn't compile rkp files like this one, BUT command line switches seems to match.

1000 thanks guys !

I have got 2 fwtools front ends. 2.6.1.0 for creating rkp apps and 3.0.29.02 for rk26xx firmware.

If you want the other one let me know. both appear to have the same compiler underneath but 3.0.29.02 works only with firmwares for some reason.

Guys, I want to do something and I think you could maybe help (or at least tell me it's impossible). I got a Ramos T11RK based on the RK2806, it's firmware lacks some features and has some nasty bugs in it. The Oppo s39 has a really good firmware and is based on the same Rockchip. I'd like to alter the Oppo firmware so it can be run on the Ramos T11RK. I think the only file that needs editing would be the BASE file, am I right? All the hardware parts should be replaced with the Ramos ones, because with the Oppo BASE file the screen (for example) wouldn't work.

The problem is, I can't change the BASE file without source code, can I?

Hey guys. Yesterday I finally got my RK2705 player from TINYDEAL.

Knob, I tested your compilation from SDK, and I noticed that the audio problem we got isn't just about mono. I plugged the player into my Creative PC speakers and it plays sharply as hell (both channels!), it makes problems using my earphones.

This is similar to what one of the members around was complaining about, though regarding his own original firmware.

It seems that if player is heavilly sucked of power voltage from earphones it happens this weird thing with audio. But when the signal is not "sucked" like in case of my creative PC speakers (whereas signal goes into its own amplifier) it works as it should.

I will look further into this.

BTW. Where is album art support? I test it now and I cant find anything like that. Also, our original firmware does not include time and data support while this sdk provides these features. Is it going to work? I mean, I couldn't check it by myself and set the time because of malconfiguration of the keys.

Good to see you got the same player as ours :)

Interesting, maybe you could look that on a scope in DC mode and see if there is a DC offset in the output ? There must be some settings in the CODEC that can get rid of this problem.

The best would be to output a sine-wave, fully amplitude and see what's going on :)

The rk27xx does not use ZSP400 ?
 

According to the datasheet of rk7xx, the DSP has a eight stages pipeline.
This is not ZSP400 which employs a five stages pipeline.

The eight stages pipeline corresponds to the ZSP 500
And there is a place in the code where i saw a comment saying "initialize ZSP500" or something .....

Now, i am not sure the opcodes for ZSP500 are the same as the ones for ZSP400.
They say they are compatible at the assembly level, but it is still possible that the opcodes are different...

flasher look in ID3_Jpeg.c for the album art bit.

Interesting about the sound. Rockchip senses the presence of jackplug insertion, funny thing that the loudspeaker doesn't work either, there is no mechanical switch in the jackplug. I guess it measures the impedence of whatever is plugged in, is the player internal speaker working when you plug into the creative sound system?

Do you get a red screen the first few seconds with video too?

Yeah, you are right. I was a little bit shocked when I came across this jackplug detection in rockchip players. I think mechanical (traditional) speaker switch is much more sufficient than those new solutions.

I also get red screen with videos. But I've already realized why it is happening :) It seems that this video bar with scrolls and info are stretched to the whole screen - probably there is something in the code regarding resolution which you had missed.
This bar was red, and a little bit transparent. The same effect happens here.

Besides, the player is great even despite that videos don't play so smoothly as I expected.