RE: Mixing I2C and SPI
Well, I know it's a bit tough to make them live on the same bus, I2C and SPI.
Those notes on that page do make some sense (I've not checked them carefully, though), but you should check carefully what happens on the bus(es)...
--how does it feel, never having been loved? as life fades away, day after day, on this planet made of s h i t...