Atmel AT90PWM2 Manual page 175

AT90PWM2/3/2B/3B
176
Table 17-1. SPI Pin Overrides
Pin Direction, Master SPI
MISO Input
SCK User Defined
SS User Defined
Note: 1. See "Alternate Functions of Port B" on page 69
direction of the user defined SPI pins.
The following code examples show how to initialize the SPI as a Master and how to perform a
simple transmission.
DDR_SPI in the examples must be replaced by the actual Data Direction Register controlling the
SPI pins. DD_MOSI, DD_MISO and DD_SCK must be replaced by the actual data direction bits
for these pins. E.g. if MOSI is placed on pin PB2, replace DD_MOSI with DDB2 and DDR_SPI
with DDRB.
(1)
for a detailed description of how to define the
Direction, Slave SPI
User Defined
Input
Input
4317I–AVR–01/08