BMW IBus power controller for USB, PC, rearview camera, power amp and LCD panel
An attempt to pay something back to the community :-)
I am not 100% done as I still need to know some of the IBus codes for pulling out of reverse for instance.
I've built an 8051 system out of standard parts that will control the power on and off off- DC/DC converters for active USB hub
- PC ignition on signal
- rearview camera
- LCD panel
As input it has ignition and an RS232 line that connects to Rolf Reslers IBus interface.
Input events are
- ignition on/off
- power on button and other IBus buttons
It will also use LED's on bordmonitor to show pc status.
None - System is on (easy to tell) or off
Yellow flash - System is booting. Rear view camera might still be on.
Solid Red - System is standby. PC is on, but no LCD or Audio.
Red flash - During red flash you have 30s to turn on system before it is shutdown
Solid Yellow - System is shutting down
(Green LED will indicate phone connected)
I will eventually put something on youtube to better show what it does.
You need the dev kit.
The SDCC tool chain (free)
My sw. There might be updates at my site, where you also can find more info.
You also need to buy components according to this simple drawing
I will keep this info uptodate as I make progress and polishes off the last flaws.