Rainbow-electronics ATmega64C1 Instrukcja Użytkownika Pobierz pdf (Strona 159)

100

101

159

7647A–AVR–02/08

ATmega32/64/M1/C1

Note: 1. See “Alternate Functions of Port B” on page 67 for a detailed description of how to define the

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.

MISO Input User Defined

SCK User Defined Input

User Defined Input

Table 15-1. SPI Pin Overrides

(1)

Pin Direction, Master SPI Direction, Slave SPI

1 2 ... 154 155 156 157 158 159 160 161 162 163 164 ... 365 366

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