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读写24LCxx系列EEPRO的C语言程序
//************************************************************************
//* Using I2C Master Mode for access Slave (EEPRM)
//*
//* Written by: Richard Yang
//* Sr. Corporate Application Engineer
//* Microchip Technology Inc.
//* Date: Oct. 3nd '2002
//* Revision: 1.00
//* Language tools : MPLAB-C18 v2.09.13
//* MPLINK v3.10
//* MPLAB-IDE v6.00.17 & ICD2
//************************************************************************
/* Include Header files */
#include <p18f452.h>
#include <i2c.h> // Load I2C Header file from defult direct
#include <timers.h>
#include "P18LCD.h" // Load P18LCD Header file form current working direct
/* Declare the Function Prototype */
void Initialize_I2C_Master(void);
void EE_Page_Write(unsigned char,unsigned char,unsigned char,unsigned char *);
void EE_SEQU_Read(unsigned char,unsigned char,unsigned char,unsigned char *);
void EEPROM_Write(unsigned char,unsigned char,unsigned char);
void EEPROM_ACK(unsigned char);
unsigned char EEPROM_Read(unsigned char,unsigned char);
void I2C_Done(void);
void Initialize_Timer2(void);
void isr_high_direct(void);
void isr_high(void);
#pragma romdata My_romdata=0x1000
const rom far unsigned char LCD_MSG1[]="SW2: Byte Write ";
const rom far unsigned char LCD_MSG2[]="SW6: Random Read";
const rom far unsigned char LCD_MSG3[]="Byte Write Mode ";
const rom far unsigned char LCD_MSG4[]="Random Read Mode";
const rom far unsigned char LCD_MSG5[]="Sended: ";
const rom far unsigned char LCD_MSG6[]="Send: ";
const rom unsigned char I2C_Write_Buffer[]="Microchip Technology";
#pragma romdata
/* Define following array in data memory */
unsigned char I2C_Read_Buffer [32];
/* define following variable in data memory at Access Bank */
#pragma udata access My_RAM
near unsigned char Debounce;
near unsigned char Send_Addr;
near unsigned char Send_Data;
near unsigned char Send_Length;
near unsigned char Read_Data;
near unsigned char P_SW2;
near unsigned char P_SW6;
#pragma udata
#define Page_Length 8
#define SW2 PORTAbits.RA4
#define SW6 PORTEbits.RE1
#define Bounce_Time 6
#define EE_CMD 0xA0
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