MCP9804-ESLASHMS datasheet(44/54 Pages) MICROCHIP

44 / 54 page

MCP9804

DS22203A-page 44

/********************************************************************

FileName:

I2C.c

Dependencies: I2C.h

Processor:PIC18 Microcontrollers

Complier:

Microchip C18 (for PIC18) or C30 (for PIC24)

Company:Microchip Technology, Inc.

Software License Agreement:

The software supplied herewith by Microchip Technology Incorporated

(the “Company”) for its PIC® Microcontroller is intended and

supplied to you, the Company’s customer, for use solely and

exclusively on Microchip PIC Microcontroller products. The

software is owned by the Company and/or its supplier, and is

protected under applicable copyright laws. All rights are reserved.

Any use in violation of the foregoing restrictions may subject the

user to criminal sanctions under applicable laws, as well as to

civil liability for the breach of the terms and conditions of this

license.

THIS SOFTWARE IS PROVIDED IN AN “AS IS” CONDITION. NO WARRANTIES,

WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED

TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. THE COMPANY SHALL NOT,

IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR

CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.

**************************************************************/

#include"p18f2550.h" // This code is developed for PIC18F2550

//It can be modified to be used with any PICmicro with MSSP module

#include "I2C.h"

/********************************************************************

Function Name:

OpenI2C1

Return Value:

void

Parameters:

SSP1 peripheral setup bytes

Description:

This function sets up the SSP1 module on a

PIC18CXXX device for use with a Microchip I2C

EEPROM device or I2C bus device.

********************************************************************/

void OpenI2C(unsigned char sync_mode, unsigned char slew)

{

SSPSTAT &= 0x3F;

// power on state

SSPCON1 = 0x00;

// power on state

SSPCON2 = 0x00;

// power on state

SSPCON1 |= sync_mode;

// select serial mode

SSPSTAT |= slew;

// slew rate on/off

SSPCON1bits.SSPEN = 1;

// enable synchronous serial port

}

/********************************************************************

Function Name:

I2CStart

Return Value:

void

Parameters:

void

Description:

********************************************************************/

void I2CStart(void)

{

PIR1bits.SSPIF = 0;//Clear Interrupt

SSPCON2bits.SEN=1;

while(!PIR1bits.SSPIF);//Wait for data received Interrupt

PIR1bits.SSPIF = 0;//Clear Interrupt

}

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