SAMSUNG YH-920

[saratoga]

Does the Meizu port even have code for that chip?  It looks like an analog regulator module.  I'm not sure if its even programmable. 

[pyro_maniac]

I again tried to find out, witch testing firmware was able to create a tmp folder. I found out, that the H10-5.mi4 can, but not always and in the system directory. How could that be? 

/EDIT: There seems to be a problem in my results. Some firmware files crashing the filesystem so i can't be sure about my results. I will remake them.

/EDIT2: H10-5.mi4 creates a tmp folder but the filesystem seems to get destroied.

[wolly-p]

If H10-5.mi4 creates at least a folder, that's a good sign because it means that the firmware can access IDE and the hard drive. Since the file system might be a bit different to the one Samsung deploys, it could become corrupted.

As mentioned before, I would recommend to set up a build environment, take the H10 (5GB) as a template,  replace only the display driver with the one from H1xx in the configuration files, compile and build and try with the new (encrypted) mi4. With some luck, you will get some output on the screen.

[pyro_maniac]

Sounds like there is still a chance.

But i have a problem again. Where can i find the displaydriver for the h1xx?

[wolly-p]

Where can i find the displaydriver for the h1xx?

That's in the sources already, you have to create a new build target for the YH920 and edit the appropriate configuration files as indicated here.

[pyro_maniac]

I started my trying on the display change in a short and dirty way. I tried to copy the the code of the lcd files of the h1xx into that of the h10. That seems to be very tricky. I am hanging on the lcd-as file wich seems to be not involved.

[wolly-p]

Rather than copying the code, why don't you try to edit the configuration file only? In principal, this should be sufficient for the first shot. If necessary, post your config file here and possibly resulting compiling error messages so that we can help.

[pyro_maniac]

I changed the config but the result is only a clear LCD with backlight on. I took the #define CONFIG_LCD from the h100 config and wrote it into the h10 one.

Are ther other things i can try?

EDIT: And there is an other problem so i can't reset the device via reset button.

[wolly-p]

Hmmm, and after changing the config file, the whole compilation and mi4-scrambling went smoothly, no other error messages, and the newly created mi4-file was accepted immediately by the player?

If you do not see anything on the display, I guess it will be nearly impossible to get anywhere soon. As a last resort, you might want to try another display type (although size and grey-scale should be correct from what we have seen so far).

Since the new build is not adapted to your hardware, it is not surprising that the reset button does not work.

Does anyone have further ideas?

[Bagder]

I've already repeatedly mentioned how this has been done on other players in the past, and the fact that this is PP-based and we know the mi4-format already and everything - it is actually far easier than most other new ports are...

[pyro_maniac]

Maybe with your knowledgebase i would come to the same conclusion but i m  a newbie and i still don't know enough to get it done alone.

What would you prefer to do? Or is this target not attractive anymore?

[saratoga]

Maybe with your knowledgebase i would come to the same conclusion but i m  a newbie and i still don't know enough to get it done alone.

Start reading up.  If you're going to make this work, you'll have to understand how the existing PP code works, the MI4 firmware format, etc.

What would you prefer to do? Or is this target not attractive anymore?

Obviously since you're the one working on the port, it was never all that appealing to most other people.  Fortunately, since you're the one working on the port, it doesn't matter what other people think is appealing.  Just what you're interested in.

[pyro_maniac]

Hmmm, and after changing the config file, the whole compilation and mi4-scrambling went smoothly, no other error messages, and the newly created mi4-file was accepted immediately by the player?

If you do not see anything on the display, I guess it will be nearly impossible to get anywhere soon. As a last resort, you might want to try another display type (although size and grey-scale should be correct from what we have seen so far).

Since the new build is not adapted to your hardware, it is not surprising that the reset button does not work.

Does anyone have further ideas?

There were some warnings only. I think they where in point changing the LCD. Is it useful to make some other tryings with that driver in?

[wolly-p]

There were some warnings only. I think they where in point changing the LCD. Is it useful to make some other tryings with that driver in?

I'm not sure. Take a careful look at the compiler warnings, they might give further hints. Also, it might be worthwile studying the code of other PP-based mi4-players regarding the display drivers.

[pyro_maniac]

I ve put my eyes on the bootloader again. Is there a known way to put the device into the manufacturing mode and to read out the bootloader?

I ve read it in the IRC at the moment and i am thinking of asking there. But first i ask here.