Except there's only 1 set of SPI hardware. What you are proposing will require bit-banging the other set of pins. Or using the USART in SPI mode, see section 21 of the datasheet. "21. USART in SPI Mode"
Except there's only 1 set of SPI hardware. What you are proposing will require bit-banging the other set of pins. Or using the USART in SPI mode, see section 21 of the datasheet. "21. USART in SPI Mode"