Cowon D2

[shotofadds]

Do the Rockbox devs have a D2 to crunch on?  If someone was to donate a D2, who would they send it to?  I have thought about getting a D2, since they are still selling them, and they aren't HD-based players, and 32GB SDHC is cheaper.

That's a very kind offer, but I'm not sure how much it would really help. There already are (or were, at least) 3-4 Rockbox devs who own D2s, but those same devs are already busy enough working on existing targets/other projects. An alternative, if no-one takes up your offer of a D2 to work on, might be a small donation to the general Rockbox fund (although it won't go towards any specific porting effort).

Ok, it looks like your D2 is using 2 blocks per segment, as opposed to the usual 4. I should be able to produce a build that works, but first I need to add in some code to detect this at runtime based on the NAND chip id. Check back in a day or two...

@store88: Could you try again with the latest build from SVN? r20186 contains some changes which should allow your D2 to boot now.

[store88]

it works now on my D2
thx very much

[buk]

I post a patch on Flyspray (http://www.rockbox.org/tracker/task/10035) to enable FM radio.
There's some empirical calibration for the frequency measurement (due to the lack of hardware based udelay). I don't know if this calibration is device independent so feedback are welcomed.

I have no idea on how implementing an accurate udelay, I guess we have to find some TCC78x functions. Maybe I will try to investigate reverse engineering of OF but it seems to be a very tedious task...

[shotofadds]

Thanks, nice work! I'd already done the basic work to communicate with the FM chip, but I didn't get very far without a usable logging mechanism. Presumably your logf-over-usb patch was rather useful for this...

Regarding udelay(), I've been meaning to fix that for a while. It should actually be rather simple so I'll try to implement that (and also the missing __timer_set() etc calls) in the next day or two. Watch this space...

[shotofadds]

With a proper udelay implementation, those modifications to the FM driver are no longer necessary, so I've taken them out and committed the rest of this patch. The FM radio now seems to work quite nicely!

If you're going to test this, do remember that the filesystem is read-only so you won't be able to save presets etc - but there are a large number of ready-made preset files available here. If there isn't one available for your area you can always create one with a text editor.

[buk]

Thanks for implementing udelay function, now it works very well !

Maybe the SS_CTRL value should be increased. It seems to be used to determine if the stations signal
level allow stereo decoding. With the actual value, I can hear some noise with some stereo stations.
In the OF, the SS_CTRL seems to be higher than rockbox.

[Japio]

First of all great work you guys! I tried installing Rockbox on my D2 yesterday and it works pretty good.
The Last.fm log file doesn't seem to be saved on my D2 though, despite enabling "Last.fm Log" in the Playback Settings. After a reboot of the D2 the setting is turned back on "No" (disabled).
Can someone please take a look at this?

I'm using firmware 2.57 and rockbox version 2009.03.21 rev20423.

[gevaerts]

First of all great work you guys! I tried installing Rockbox on my D2 yesterday and it works pretty good.
The Last.fm log file doesn't seem to be saved on my D2 though, despite enabling "Last.fm Log" in the Playback Settings. After a reboot of the D2 the setting is turned back on "No" (disabled).
Can someone please take a look at this?

I'm using firmware 2.57 and rockbox version 2009.03.21 rev20423.

There is no write support on the D2 yet, so *nothing* gets saved

[Japio]

I see, bummer.

[hpfmn]

Is it alowed to ask whether there is any development on the sd card driver (reading would be nice and write extreamely awsome!)?

It seems there is currently no development ... I really get pissed of by the corrupted databases of the orginal firmware and I think with this feature rockbox would be almost perfectly usable (than there is just this ugly music buffer thing)

[outlawman]

there are menu items like "cut, delete"... called with long pressing menu button. but they doesn't work. is it because of "read-only" thing?

[vodi]

there are menu items like "cut, delete"... called with long pressing menu button. but they doesn't work. is it because of "read-only" thing?

Yes. Nothing, which needs write-access can be done. This means also cut & delete.

[markV]

Hi Group !

I have one or two questions and, two or three observations...

First (neophyte) question: I know Rockbox bootloader is patched in the original firmware with mktccboot, does that mean Rockbox is like a "parasite" application ?  I mean does Rockbox send commands to the hardware through the original software or directly to the hardware ?

Second question: I remember having seen somewhere on this site something about database corruption being related to a bad bootloader patching or something...  Is that what I'm experiencing on the "original firmware side" (complete database corruption, like 'hpfmn' wrote) or this database corruption is really just from the new Cowon 2.59 firmware ?

Ok, now some observations I made (could this help) on my Rockboxed (v. r20457-090322) 8GB D2:
1- when the backlight goes to sleep there is still a faint (so faint !) amount of light emitted when using a white background theme (like iCatcher)
2- I still got the two-bottom-lines-at-top problem, like once in 20 boots or so (random for sure)
3- I have a weird problem when getting the power button back from the locked position: most of the times the player goes to a paused state but gets back to the main menu and can not resume playing.  A less frequent symptom is the player shutting down after a couple of clicks.

Aside from that, Rockbox is now very usable on the D2 !
Thanks for putting so much effort in this great application !!

MarkV

[Pivot]

I did specifically ask whether the lack of a pre-compiled bootloader was holding anyone back from testing, so that response was entirely justified. As I'm sure you know, user testing can be incredibly helpful even in early stages of development.

If there are people who would find it useful, I see no problem providing a mktccboot binary (with associated bootloader.bin), especially given that we already provide a pre-built rockbox.zip and tcctool, too.

Hi, I am looking for pre-built mktccboot (with associated bootloader.bin). I would try Rockbox on my D2 and haven't develop's environment.

If it is possible..... many thanks.

Regards

[hpfmn]

First (neophyte) question: I know Rockbox bootloader is patched in the original firmware with mktccboot, does that mean Rockbox is like a "parasite" application ?  I mean does Rockbox send commands to the hardware through the original software or directly to the hardware ?

Okay I don't know but I think it uses the hardware directly and is just patched into the main firmware to boot the whole thing up

Second question: I remember having seen somewhere on this site something about database corruption being related to a bad bootloader patching or something...  Is that what I'm experiencing on the "original firmware side" (complete database corruption, like 'hpfmn' wrote) or this database corruption is really just from the new Cowon 2.59 firmware ?

I Just spoke about the "normal" Datacorruption of 2.59 (are there more Problems with this release?)

and I would just like to have a nice platform to stark hacking - but I think my skills are to low for drivers