PIC16F917 EEPROM Test Program

/********************************************************************/
/*****File Function : EEPROM test program *****/
/*****Program Author : ZhengWen(ClimberWin) *****/
/*****MCU : PIC16F917 internal crystal *****/
/*****Compile Date : 2010/08/16 *****/
/*****Edition Info : V1.0 *****/
/*******************************************************************/
//PIC16F917 has 256 bytes of EEPROM storage space
//The button LED display adds 1, the power-off data is saved to the EEPROM, and the data is read from the EEPROM after restarting
//Pin definition: PORTD=8LED, KEY=RB0
/*Modification Date: */

/************************************/
#include 
#define uchar unsigned char
#define uint unsigned int
void keytest(void);  //按键测试程序
void delayms(unsigned int count);
void Init(void);

#define KEY RB0
uchar led_num; //define the storage address of LED count value
void Init(void)
 {
     PORTB = 0B00000000;
     PORTD = 0B00000000;
     TRISB = 0B00100001; //Set RB0 as input, as a key port
     TRISD = 0B00000000; //Set PORTD as output, as LED display port
     led_num=EEPROM_READ(0); //Read data from EEPROM
     PORTD=~led_num;
}

void keytest(void) //key test program
{

/****************************************************/  
  if(KEY==0)
   {    
      led_num++;
      EEPROM_WRITE(0, led_num);//Save EEPROM data
      PORTD=~led_num;
  ///////////////////
    while(KEY==0) //Key debounce
     { delayms(100);}
   }
}
/*************************************************/  
void delayms(unsigned int count)
{
 uint i,j;
 for(i=0;i  for(j=0;j<20;j++);
}
/*************************************************/  
////////////Main program/////////////////////////
int main (void)
{
 Init();

  while(1)
  {
    keytest();
  }
}