spi.c File Reference

Serial Peripheral Interface module Target: PIC16F876. More...

#include <app.h>

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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 =CLEAR
volatile bit	gSpiRx =CLEAR

Detailed Description

Serial Peripheral Interface module Target: PIC16F876.

This file is part of JADEKU Portable ADQ device for Routines Control.

Copyright (C) 2002-2009, Hernan Monserrat hemonserrat<at>gmail<dot>com

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file spi.c.

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

)

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 =CLEAR

Definition at line 29 of file spi.c.

gSpiTx

volatile bit gSpiTx =CLEAR

SPI interrupt flags

Definition at line 28 of file spi.c.