spi.h File Reference

This is the SPI header
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Go to the source code of this file.

Defines
#define	DD_SPI_SS   PB0
#define	DD_SPI_SCK   PB1
#define	DD_SPI_MOSI   PB2
#define	DD_SPI_MISO   PB3
#define	DDR_SPI   DDRB
#define	SPI_PORT   PORTB
#define	PROPER_SPICON1   (0<<SPIE)|(1<<SPE)|(0<<DORD)|(1<<MSTR)|(0<<CPOL)|(0<<CPHA)|(0<<SPR1)|(1<<SPR0)
Functions
void	SPI_MasterInit (void)
	SPI_MasterInit This function is used to Initialize the Chip's SPI as the Master.
void	SPI_CS_high (int ChipSelect)
	SPI_SlaveInit This function is used to Initialize the Chip's SPI as a Slave.
void	SPI_CS_low (int ChipSelect)
	SPI_CS_low This function is used to set a specific Chipselect to LOW.
char	SPI_MasterTransmit (int ChipSelect, char cData)
	SPI_MasterTransmit This function is used to Transmit Data via SPI (This is only working as Master, receiving is implemented as pseudo-reading) .

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Detailed Description

This is the SPI header
.

It is used to specify SPI pins

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Define Documentation

#define DD_SPI_MISO   PB3

Referenced by SPI_MasterInit().

#define DD_SPI_MOSI   PB2

Referenced by SPI_MasterInit().

#define DD_SPI_SCK   PB1

Referenced by SPI_MasterInit().

#define DD_SPI_SS   PB0

Referenced by SPI_MasterInit().

#define DDR_SPI   DDRB

Referenced by SPI_MasterInit().

#define PROPER_SPICON1   (0<<SPIE)|(1<<SPE)|(0<<DORD)|(1<<MSTR)|(0<<CPOL)|(0<<CPHA)|(0<<SPR1)|(1<<SPR0)

Referenced by SPI_MasterInit().

#define SPI_PORT   PORTB

Referenced by SPI_CS_high(), SPI_CS_low(), SPI_MasterInit(), and SPI_MasterTransmit().

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Function Documentation

void SPI_CS_high

(

int

ChipSelect

)

SPI_SlaveInit This function is used to Initialize the Chip's SPI as a Slave.

Parameters:

void

Returns:

void SPI_CS_high This function is used to set a specific Chipselect to HIGH

Parameters:

ChipSelect

The ChipSelect PIN we want to drive to High

Returns:

void

References SPI_PORT.

Referenced by init().

void SPI_CS_low

(

int

ChipSelect

)

SPI_CS_low This function is used to set a specific Chipselect to LOW.

Parameters:

ChipSelect

The ChipSelect PIN we want to drive to Low

Returns:

void

References SPI_PORT.

void SPI_MasterInit

(

void

)

SPI_MasterInit This function is used to Initialize the Chip's SPI as the Master.

Parameters:

void

Returns:

void

References DD_SPI_MISO, DD_SPI_MOSI, DD_SPI_SCK, DD_SPI_SS, DDR_SPI, PROPER_SPICON1, and SPI_PORT.

Referenced by main().

char SPI_MasterTransmit	(	int	ChipSelect,
		char	cData
	)

SPI_MasterTransmit This function is used to Transmit Data via SPI (This is only working as Master, receiving is implemented as pseudo-reading)
.

Parameters:

	ChipSelect	The ChipSelect PIN we need to drive to LOW to select the other Slave-Chip We drive it to HIGH again after the communication is finished.
	cData	The Byte we want to send via SPI

Returns:

char The Byte we got via pseudo-reading (SPI is a shifiting Register - so readable Data should be here)

References my_delay(), and SPI_PORT.

Referenced by get_temperature(), init_lcd(), lcd_clear(), lcd_send_bitmask(), lcd_send_char(), and lcd_set_start().