SAMSUNG YH-920

[kugel.]

Now officially committed.

I tried enabling the RTC and LCD contrast. It seems to work just fine, is there any reason you didn't enable it?

Great work! Really.

[pyro_maniac]

I tried to make the first step in making keymaps for plugins.

See FS#10251.

[kugel.]

I tried enabling HAVE_LCD_ENABLE on my 925.

The display went white (not really surprising), but this weird second backlight (the 925 has 2 backlights, one bright one, and one not so bright one which never turns off [neither in the OF]) didn't turn off, so it wasn't really useful.

Do we have any way to turn off the 2nd backlight?

On a related note, the first one doesn't work at all here.

[lowlight]

Can someone with a YH-920 tell me the values of GPO32_ENABLE and GPO32_VAL from the Debug>View I/O ports screen.

[funman]

GPO32_VAL = GPO32_EN = 0x80000022

[pyro_maniac]

Is this datasheet already known? Or should this be uploaded in the wik?

[funman]

extra information can't hurt, so you can upload it.

[lowlight]

GPO32_VAL = GPO32_EN = 0x80000022

Same as the 925. 

Is this datasheet already known? Or should this be uploaded in the wik?

That's what I used for the driver. 

[perfectdrug]

hi I started on the SVGs for the manual. For the Samsung YH - 920 and 925.
http://www.rockbox.org/tracker/task/10279
Comments would be welcome.
I also would like to see a higher resolution scan of the pattern below the display of the YH-920, so that I can include it in the picture.
I also may need help with the button placement and labeling.

I just finished Samsung YH - 820 SVG.
http://www.rockbox.org/tracker/task/10286
Comments are welcome.

[Ced_P]

Hi,

I have a  Samsung branded YH 920 with a v2.05 bootloader.
The file name of firmware is FW_YH920.mi4.
I tried to make Rockbox run on my player by making a build using code in SVN.
After compilation, i unzipped the rockbox.zip on my player. Then i copied rockbox.mi4 to system directory and renamed it to FW_YH920.mi4

What is working : Display, Internal/External Storage,  Buttons, building music DataBase
What is not working : playing sound, Battery Charging/Monitoring, some freezes during menu navigation

I'm a great newbie, but maybe can i help by testing new build.
Thanks for your work.

[lowlight]

You should first compile a "bootloader" build. This replaces the FW_YH920.mi4 firmware file in the System directory (rename the original FW_YH920.mi4 to OF.mi4 if you want dual-boot). Then compile a "normal" build and unzip rockbox.zip onto the device. Keep rockbox.mi4 where it is.

[Ced_P]

Ok thank you. I will make a trial in the evening.

New edit :

I created new bootloader and new build. This is my conclusion for my player (YH920-GS1/ELS) :

What is working : Dualboot, Display, Internal/External Storage, building music DataBase
What is not working : playing sound, some freezes during menu navigation, buttons on ears cable.

Buttons seem to work, but there is a problem when i change clock. I can change hour, but when i try to go on minute field, the player go to back menu.

[pyro_maniac]

I started working on the rbutil support: FS#10373

EDIT: I also opened a task for fm radio support: FS#10480
I couldn't test it because my YH-920 has still no sound yet. I am not sure if it is just that simple but this is only a first shot.

[funman]

lowlight has committed a fix which enables sound output on yh920

I tested the radio patch but it lacks a modification to switch between rockbox codecs and FM output (should be simple)

battery reading works as well, but needs to be calibrated (I'm looking at it, but perhaps lowlight will fix it before I can understand the code )

[Ced_P]

Hello,

I created new bootloader and new build today. (my player is a YH920-GS1/ELS, european version without FM radio)

Great job, only remote control on ears cable is not working.

thank you!!!! My YH920 is now a new player!!!!