spi.h File Reference

Serial peripheral Interface. Target platform dependent. More...

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Functions
void	SPI_Init (void)
BYTE	SPI_Exchange (BYTE data)
void	SPI_Write (BYTE data)
BYTE	SPI_Read (void)

Variables
volatile bit	gSpiTx
volatile bit	gSpiRx

Detailed Description

Serial peripheral Interface. Target platform dependent.

Attention

Copyright (c) 2000 JANUS.
This computer program includes confidential, proprietary information and is a trade secret of JANUS. All
use, disclosure, and/or reproduction is prohibited unless expressly authorized in writing.
All rights reserved.

Author

hgm

Version

Header

/home/cvsroot/jadeku/spi.h,v 1.1.1.1 2006-09-12 16:57:15 hernan Exp

Definition in file spi.h.

Function Documentation

SPI_Exchange()

BYTE SPI_Exchange

(

BYTE

data

)

Poll the shift register.

Parameters

data	- outgoing byte.

Returns

a byte read (input)

Remarks

do the input/output polling the register

Definition at line 62 of file spi.c.

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SPI_Init()

void SPI_Init

(

void

)

Function prototypes

Initialize SPI subsystem

Definition at line 33 of file spi.c.

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SPI_Read()

BYTE SPI_Read

(

void

)

Get a byte from the SPI subsystem RMC packet is received.

Returns

a byte from the shift register

Definition at line 86 of file spi.c.

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SPI_Write()

void SPI_Write

(

BYTE

data

)

Send a byte to the SPI network.

Parameters

data	- Put a data byte in the shift register.

Definition at line 75 of file spi.c.

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Variable Documentation

gSpiRx

volatile bit gSpiRx

Definition at line 29 of file spi.c.

gSpiTx

volatile bit gSpiTx

SPI interrupt flags

Definition at line 28 of file spi.c.