Presentation
Normally my phone is in my car dock connected to power and auxiliary input to the radio.
The plan is to control the music player on my phone with the steering wheel buttons.
When a button is pressed it sends a message over the I-Bus to the radio or BMW's optional car phone. This circuit was designed to interface with the I-Bus over bluetooth.
The board was fabricated and connected to the serial bluetooth module.
The boards were placed in a small project box and connected to a 3-pin jack.
The jack connects to a plug that was used by the satellite radio module which was removed from the car.
Messages on the I-Bus are received by the phone over bluetooth. The IBusIntents app decodes the messages and dispatches intents to the music player for next-track, previous-track, and play/pause.
Serial Port Profile (SPP) => Audio/Video Remote Control Profile (AVRCP)
No Android application needed.
