Support and General Use > Hardware
iPod 5.5 and my car kit
chileboy:
--- Quote from: torne on January 24, 2011, 06:44:46 PM ---One thing that you could do which would be relatively simple is to work out which of the pins on the dock connector are actually connected to the car kit. This would probably answer some of the basic questions (such as "is it using IAP over serial or something over USB") pretty quickly. Grab a multimeter ;)
--- End quote ---
Well, that would be difficult, as the box it's plugged into is concealed in the console or the dash - not sure exactly, as a professional installer did it. Perhaps I could ask the tech support guy over at Parrot, he's generally pretty forthcoming, but they would probably consider this proprietary information.
--- Quote ---Have you been able to check out the current version of the Rockbox source, and compile it to a working build (without modifying any of the code)? Make sure you can do that first.
--- End quote ---
Yes, I have done that successfully. I used to do quite a bit of programming, back in the DOS days...but this is a bit different, as I don't know C (yet), and there is a LOT of code there already. It's obviously easier when you've written the stuff yourself from the ground up.
--- Quote ---We only support extremely basic remote protocols, pretty much just commands for play/pause/ffwd/rewind/etc, so that's unlikely to be used by a head unit that displays actual information about what the device is playing.
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OK, I understand...I'm beginning to think I may be booting the OF in my car "forever"...or embarking down a very long road.
torne:
--- Quote from: chileboy on January 25, 2011, 02:55:40 PM ---
--- Quote from: torne on January 24, 2011, 06:44:46 PM ---One thing that you could do which would be relatively simple is to work out which of the pins on the dock connector are actually connected to the car kit. This would probably answer some of the basic questions (such as "is it using IAP over serial or something over USB") pretty quickly. Grab a multimeter ;)
--- End quote ---
Well, that would be difficult, as the box it's plugged into is concealed in the console or the dash - not sure exactly, as a professional installer did it. Perhaps I could ask the tech support guy over at Parrot, he's generally pretty forthcoming, but they would probably consider this proprietary information.
--- End quote ---
You said it ended in an 8 pin plug, or something? I don't mean what's connected to what, I just mean which dock pins are connected *at all*, to anything. So, you'd only have to test the two ends of the cable... nothing to do with the devices on either end. The dock pinout is standard; it's obvious what will be connected to each pin. What's interesting is "are the USB data lines connected", "is lineout connected", "is the accessory serial port pin connected", etc. This would drastically narrow down the options for how the head unit is communicating with the player.
Falco98:
--- Quote from: chileboy on January 25, 2011, 02:55:40 PM ---OK, I understand...I'm beginning to think I may be booting the OF in my car "forever"...or embarking down a very long road.
--- End quote ---
Why not just skip the hassle and connect thru the line-in on the Parrot unit? You would lose the ability to use its display and ipod controls, but the benefit is that you'd be able to actually use Rockbox.
chileboy:
--- Quote from: torne on January 25, 2011, 04:27:37 PM ---You said it ended in an 8 pin plug, or something? I don't mean what's connected to what, I just mean which dock pins are connected *at all*, to anything. So, you'd only have to test the two ends of the cable... nothing to do with the devices on either end.
--- End quote ---
Yes, I understand that, but the other end of the cable is connected to the black box which is concealed in the dash - the only way to unplug it would be to disassemble the dash and/or console to gain access to the box. The iPod connector end feeds up into my center console through a grommet opening - everything else is concealed.
--- Quote from: Falco98 on January 25, 2011, 11:19:48 PM ---Why not just skip the hassle and connect thru the line-in on the Parrot unit? You would lose the ability to use its display and ipod controls, but the benefit is that you'd be able to actually use Rockbox.
--- End quote ---
That's defeating the whole purpose of the system, which is to use the display on the dash and the jog wheel and other controls on the console, so I don't have to take my eyes off the road. - it's a safety issue. Also, the line-in doesn't produce the same level of sound quality.
torne:
Ah, okay, the way you described it before sounded like you could access that cable. What exactly does the player think happens when you plug it in? Does it go into USB mode?
I suspect the head unit is not using the accessory serial port at all, and is probably operating over USB, so adding extra tracing/logging to iap.c won't get you anywhere (but it may be worth trying this just to prove whether or not it uses IAP at all). It's *probably* doing weird SCSI requests or something similar, which will require a variety of odd hacks to our USB stack to get at ;)
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