内部eeprom._c

AVR之ATMega16

//包含所需头文件
#include <ioM16v.h>
#include <macros.h>
#include "delay.h"



/*------宏定义------*/
#define uchar	unsigned char
#define uint	unsigned int



/*------函数定义------*/
uchar e2prom_read(uint addr);
void e2prom_write(uint addr,uchar wData);




//端口初始化
void port_init(void)
{
 PORTA = 0xFF;
 DDRA  = 0xFF;
 PORTB = 0x00;
 DDRB  = 0x00;
 PORTC = 0x00;
 DDRC  = 0x00;
 PORTD = 0x00;
 DDRD  = 0x00;
}


//功能:E2PROM单字节读函数
uchar e2prom_read(uint addr)  
{
 while(EECR & (1<<EEWE));
 EEAR = addr;
 EECR|=BIT(EERE);
 return EEDR;
}


//功能:单字节写函数
void e2prom_write(uint addr,uchar wData)
{
 while(EECR & BIT(EEWE));
 EEAR=addr;
 EEDR=wData;
 EECR|=BIT(EEMWE);
 EECR|=BIT(EEWE);
}


void init_devices(void)
{
 CLI(); //禁止所有中断
 MCUCR  = 0x00;
 MCUCSR = 0x80;//禁止JTAG
 GICR   = 0x00;
 port_init();
 SEI();//开全局中断
}
//主函数
void main(void)
{
 init_devices();
  while(1)
 {
  e2prom_write(0x00,0x00);
  PORTA=e2prom_read(0x00);
  DelayMS(1000); 
  e2prom_write(0x01,0xF0);
  PORTA=e2prom_read(0x01);
  DelayMS(1000);
  e2prom_write(0x02,0x0F);
  PORTA=e2prom_read(0x02);
  DelayMS(1000); 
  e2prom_write(0x03,0xaa);
  PORTA=e2prom_read(0x03);
  DelayMS(1000); 
  e2prom_write(0x04,0xFF);
  PORTA=e2prom_read(0x04);
  DelayMS(1000); 
 }
}