Arizona 17 User Manual



 2001 Microchip Technology Inc.

DS39024B-page 71

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

//*   I2C.C

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

//*   Rodger Richey

//*   Principal Applications Engineer

//*   Microchip Technology Incorporated

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

//*   2 December 1998

//*   Compiled using MPLAB C17 C Compiler V2.20

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

//*   This program reads and writes to the 24LC01B

//*   Serial EEPROM using the master mode I2C module.

//*   The value of the address is written to each 

//*   address of the EEPROM. The program then reads

//*   the value out of the EEPROM and prints both

//*   the desired value and the read value to the 

//*   USART2 for display on the Monitor program. The

//*   address is also displayed on the memory mapped

//*   LEDs.

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

//*   Uses an oscillator of 16MHz

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

#include <p17c756.h>

#include <delays.h>

#include <i2c16.h>

#include <usart16.h>

#include <stdlib.h>

void PutsUSART2(char *data);

void PutcUSART2(char data);

// Prints a string to USART2 using hardware handshaking;

void PutsUSART2(char *data)

{

do

{

// Wait for USART2 to finish prev operation

while(BusyUSART2());

// Wait for CTS

while(PORTBbits.RB4);

// Write a character to USART2

putcUSART2(*data);

} while(*data++);  // Increment pointer and check for NULL

return;

}

// Prints a character to USART2 using hardware handshaking

void PutcUSART2(char data)

{

while(BusyUSART2());

// Wait for 

USART2 to finish

while(PORTBbits.RB4);

// Wait for CTS