Header file for the SPI interface. More...

#include <avr/io.h>

Macros
#define	SPI_PORT PORTF

#define	SPI_MODULE SPIF

#define	SPI_SS_bp PIN4_bp

#define	SPI_MOSI_bp PIN5_bp

#define	SPI_MISO_bp PIN6_bp

#define	SPI_SCK_bp PIN7_bp

#define	SPI_SS_bm PIN4_bm

#define	SPI_MOSI_bm PIN5_bm

#define	SPI_MISO_bm PIN6_bm

#define	SPI_SCK_bm PIN7_bm

#define	SPI_CLOCK_SPEED_gc SPI_PRESCALER_DIV4_gc

Functions
void	spi_init (void)
	Initialize interface. More...

void	spi_select_slave (void)
	Activate the slave. More...

void	spi_deselect_slave (void)
	Dectivate the slave. More...

uint8_t	spi_transfer (uint8_t byte)
	Transfer one data byte. More...

Detailed Description

Header file for the SPI interface.

This library provides high level access to the Serial Peripheral Interface bus interface.

Author: Wolfgang Neff

Version: 1.0

Date: 2016-05-14

History: Created: 2016-05-14

Macro Definition Documentation

◆ SPI_CLOCK_SPEED_gc

#define SPI_CLOCK_SPEED_gc SPI_PRESCALER_DIV4_gc

◆ SPI_MISO_bm

#define SPI_MISO_bm PIN6_bm

◆ SPI_MISO_bp

#define SPI_MISO_bp PIN6_bp

◆ SPI_MODULE

#define SPI_MODULE SPIF

◆ SPI_MOSI_bm

#define SPI_MOSI_bm PIN5_bm

◆ SPI_MOSI_bp

#define SPI_MOSI_bp PIN5_bp

◆ SPI_PORT

#define SPI_PORT PORTF

◆ SPI_SCK_bm

#define SPI_SCK_bm PIN7_bm

◆ SPI_SCK_bp

#define SPI_SCK_bp PIN7_bp

◆ SPI_SS_bm

#define SPI_SS_bm PIN4_bm

◆ SPI_SS_bp

#define SPI_SS_bp PIN4_bp

Function Documentation

◆ spi_deselect_slave()

void spi_deselect_slave ( void )

Dectivate the slave.

Drives the chip select line high in order to deactivate the slave.

◆ spi_init()

void spi_init ( void )

Initialize interface.

Setup the interface pins and initialize the spi controller.

◆ spi_select_slave()

void spi_select_slave ( void )

Activate the slave.

Drops the chip select line in order to activate the slave.

◆ spi_transfer()

uint8_t spi_transfer ( uint8_t byte )

Transfer one data byte.

Transmits one data byte to the slave and receives one from the slave.

Parameters

byte	The data byte sent to the slave.

Returns: The data byte received from the slave.

Macros

Functions