I am going to start an embedded project and I think to use Raspberry programmed with B4J.
I would need a minimal OS for quick booting when the device is powered on.
I don't need XServer or any GUI. I just need to use Ethernet,Uart,I2C and SPI interface.
Do you know if is there any distribuition working out of the box ?
Just for knowledge Minibian distribution (2016-03-12-jessie-minibian.img) on Raspberry 1 with installed Oracle-Java 8 can start to blink a led in 24secs from the boot.
Not bad. But if someone knows some distribution more speedy please tell me.