1. Device sending information about sound control, track number and so on by UART line to can-bus adapter.
2. Can-bus adapter control car MFD (multi function display) by CAN-BUS line. CAN-BUS can show information from trip computer, and some information from device (track number, volume and so on).
3. CAN-BUS adapter controlling some function of MFD by steering wheel control (SWC). In regular mode command from SWC translate by NEC IR IN to device (vol+, vol-, mute and so on). In special mode all events from SWC processed in CAN-BUS adapter.