Hi all.
When I am using SPI-bus communication between two processors, I will
use one as master and the other as slave.
Do I have to connect P1.4(SS) between uP's using harware-commando
to tell the slave that it is a slave, or is it enough to set up SPCR as slave.
I dont realy understand whats the meaning with P1.4 as 'SS'.
Can I, for example, force the uP to be a SPI-slave by set P1.4 to zero.?

Magnus Munthe