SPI SS pin

[joaoantoniocardoso]

Hi,

in my last project using this lib I have a lot of trouble with SPI and have to manage outside of the lib to make sure that the SPI would work as master: set_bit(DDRB, PB2);, and it doesn't seems very polite at first glance.

So it would be nice to document that if the PB2 pin is floating, than it could have a noise in it that cause the SPI to initialize as slave instead master and the microcontroller' SPI wouldn't clock.

Or maybe modify the library to make (at spi_init() function?) the SS pin as output.

What do you think?