AVR-Chat

Hello,

I am doing a project where I need multiple mega8 avrs sending sensor
data to another controller.  The other controller is an OOPic-R.  The
OOPic has built in functions for SPI, i2c(twi), and serial
communications.  What is best for a multiple slave, single master
system?  I can make code for the OOPic, but need some slave code for
the avrs.  I am using Codevision and the help file doesn't have that
much information about how to use i2c or SPI in slave mode.

Thanks,
Kc