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Hi

I have got hold on a Pioneer DAB unit but I don't have any control head to it.
After some google on the net I finaly found this place. The "only" (?) one that have
made some progress on the communication?

I have som questions.
First of all.. Does anyone know how to communicate with a DAB unit?

If I understand the adapter that is made it's only for transmitting?
Looking at the schematic a guess that the Pioneer IP-BUS is CAN based?
Is it 250 MBit CAN?
I'm using CAN at work and have a PIC controller that can transmitt CAN.
Is it possible to find what commands I need to send to get my DAB unit working?

Great work on the IP-BUS!

/best regards

Michael Pettersson

This bus isn`t CAN. This is Inter Equipment bus, mode 1 ;)))

EHH.. What I ment was that the communication is CAN based.. I read some messages from Mike and he used a PIC whit internal CAN controller. I guess that it's CAN based.
The question is what speed it uses. 250 MBit could it be if the controller used with the AVR is specified with speed info.

hi
it is definitly not CAN, neither the protocol nor the voltage levels
the reason why i used the pic 18F452 is that i had one available and i had to much spare time :)
btw the 18F452 has no built in CAN hardware
the 82C250 is used to transmit and the OPAMP is the receiving part because the voltage levels on the bus are so low (200mV if i remember right) that the 82C250 does not recognize them
hooking up a PC to the bus is easy just use the adapter as a IP-bus to serial connector
u just need to edit the sourcecode so that it fits your needs

if u are going to build an emulator or just want to fool around with this bus i wouldt recommend you to use an AVR and not a PIC
18F452@40Mhz is ok but every smaller type is to slow to handle the bus and serial com


@Brokly
Inter Equipment bus, mode 1 ?!?
are u joking or it is realy called like that ?

Hi!
Excuse mine English is bad.
I have made the real adapter and driver for connection IP BUS and WinAmp.
I can unequivocally tell, that the structure of the protocol corresponds IEBus.
If interestingly glance - NECEL (UPD 72042) .
My adapter - circuit Vitat's and PIC16F876 - 20.
Any jokes.

hi brokly
thx for the information

I you Welcome:).
Unfortunately this microcircuit is inaccessible to me :( .

I'm a little bit confused.
Why is there a canbus driver in the interface circuit?

Have anyone here managed to make a connector working on the IP-BUS?
The original cabels is very expensive.

After some weeks on ice I finaly got my hands into the IP Bus project again.

I havn't got my dub unit to work correctly with my stereo. I had to "hardwire" it in.
The only cable I had was an extension cord and that gave me on wrong connector.
My first attempt resultet in some kind of communication but no audio??

I saw that I hooked it up on the IP Bus Input on the DAB unit. I guess this is the wrong one to use?
Whats the differense? Apperently the radio can communication with the unit. I can shift to
the dab in the meny and I see that it calibrates the channels.

I will try to rewire the hole thing on the other connector. Hope this helps.

The next thing I would like to do is to connect my computer to the DAB unit input and send computer audio (mp3 etc) to the radio. is this possible?

/best regards

Michael

Can you guys light me up a little, I do not understand what you call a DAB unit. One of my customers was looking for a DAB, but he didn't know what exactly was DAB.

DAB stands for "Digital Audio Broadcasting".
On a FM broadcast each station need its own frequency.
With DAB you can send multiple channels on each frequency block.
On frequency block can handle 6 channels, stations.

It is very easy to create new channels, for example for sport events etc.

The sound quality is better. The DAB broadcasts can also send text, graphics or pictures.

The BIG setback with DAB is that there is very few (in Sweden) channels to listen on.
The DAB receivers are a little bit to expensive.

If people do not buy receivers, the radio stations is not interested in investing in DAB equipment.
If there is no radio stations to listen on, then people do not want to buy receivers.

Eureka 147, http://www.worlddab.org/eureka.aspx
This is the project that created the standard for DAB.

Thanks for the information...

I just saw this post - I am looking for an interface for my Pioneer touchscreen headunit to a pc running MP3's but am interested also in possibly buying your DAB tuner if it is still not hooked up to anything successfully as I could make use of it....

PM me if you are interested..