Support and General Use > Hardware

iPod 5.5 and my car kit

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chileboy:
Man, that is disappointing, I really want to stick with Rockbox.

Saratoga had said earlier that the protocol the Parrot uses would have to be reverse-engineered and implemented somehow; I've haven't really done any heavy-duty programming since the days of DOS (showing my age I suppose) - and I'm sure you folks working on Rockbox are pretty sharp, but how would I even start such an undertaking?

You said thought there were maybe three Apple protocols...apparently someone reverse-engineered at least one of them, because Rockbox works with some in-car units.

saratoga:
I guess you could plug your device into your ipod and log they say to each other then go from there.  I think thats how most of the protocol was understood. 

The accessory code is in /apps/iap.c

I'm not sure if theres currently anyway to log the IAP commands, but you could pretty easily add LOGFs or just record the entire exchange to disk to see where it gets stuck.

torne:
As far as I understand it (I could be mistaken), the accessory protocol used here doesn't actually play anything on the device either; it just gives the head unit a way to find the files with the garbage filenames that itunes uses; the head unit is still responsible for actually playing them. The connection to the head unit is just a USB port, and you're using your normal ipod dock cable, yes?

chileboy:
torne, if I'm understanding your question, the cable connector to the head unit has three plugs: a phono for audio-in, a USB, which will read audio files from any standard USB storage device, and an iPod connector (identical to that on a normal iPod dock cable).

I'm not 100% sure how the unit interfaces with the iPod.  When running the OF, I can browse the database, queue files, etc., and the WP screen on the head unit will show the metadata (song, artist, etc., and also album art), but it is definitely the iPod doing the actual decoding, because the Parrot itself doesn't understand ALAC files, for instance.  Also, if I plug in a USB drive with some MP3s, and play them directly using the Parrot, they sound noticeably different (worse, to my ears) than if I play the same file back through the Parrot using the iPod.

Am I making sense?

saratoga, I half-understand what you are telling me in a theoretical way, but don't have the knowledge or experience to actually perform the tasks you're describing!  Nor would I know what I would do with the data...

saratoga:

--- Quote from: chileboy on November 11, 2010, 01:32:36 PM ---torne, if I'm understanding your question, the cable connector to the head unit has three plugs:

--- End quote ---

You're not, hes asking you what cable you use to plug into the head unit.  It has an ipod dock connector on one end, and something on the other end . . .  What is that something?

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