Re: IHU status message?

Posted by Karlis on Feb 03, 2016; 5:42am
URL: http://bluesaab-forum.90.s1.nabble.com/IHU-status-message-tp177p179.html

Da Bear wrote

Can we somehow see if the IHU is on/off, or in CD/radio mode?

Yes, we can. There's a specific CAN frame that appears on the bus that we also use to determine if the CDC is active (IHU is pushed into CDC mode) or not (IHU is in Radio mode).

Da Bear wrote

I'm thinking that when the microphone is working we'll want to be able to receive calls regardless if CDC is active or not. IE listening to radio - incoming call forces IHU to change to CDC and routes the sound to the adapter.
And if the IHU is off - the module is not accepting bluetooth connections.

This, currently, won't be possible, as we assume that once IHU is not in CDC mode, the RN52 chip is pushed into 'discoverable/connectable' mode. Meaning, that it disconnects from whatever device it was previously connected to till IHU switches back to CDC mode.

Da Bear wrote

Possible solution: Maybe in a future hardware revision we connect the module in both the canbus- and handsfree connector directly inside the center console?

We're trying to use mic-in connector for this purpose. Once an incoming telephone takes place, RN52 mutes audio and switches mic-in on. Then we should be able to use the mic built into the console.