I've two AVRs (both are Atm8535) for my robot.
I need a fast protocol to communicate between them.
since 10 pins are free on each, i could use TWI (Ten Wire Interface) :D, just to speed up data transfer
since 7 ultrasonics & electric compass are assigned to the slave
It's so confused to implement the handshaking. Is there anyone implemented this before? or is it possible to modify some I2C / TWI routine available here?