ee.c

来自「基于ATMEGA88开发内部EEPROM的源代码模块」· C语言 代码 · 共 73 行

#include "includes.h"


/////////////////////////////////////////////////////
//		内部存储器功能函数
/////////////////////////////////////////////////////



#if	EERDP
void Ee_Rdp(unsigned int adr, 
		unsigned char *dataBuf, 
		unsigned char n)
{
	EECR = 0;
	do{
		EEAR = adr++;
		s(EECR, 0);
		
		*dataBuf++ = EEDR;
	}while (--n);
}
#endif


#if	EEWRP
void Ee_Wrp(unsigned int adr, 
		unsigned char *dataBuf, 
		unsigned char n)
{
	EECR = 0;
	do{
		EEAR = adr++;			//设置地址
		EEDR = *dataBuf++;		//写数据
		
		s(EECR, 2);
		s(EECR, 1);
		
		while (b(EECR, 1));		//等待操作结束
	}while (--n);
}
#endif


#if	EERDB
unsigned char Ee_Rdb(unsigned int adr)
{
	EECR = 0;
	EEAR = adr;
	s(EECR, 0);
	
	return EEDR;	
}
#endif


#if	EEWRB
void Ee_Wrb(unsigned int adr, unsigned char c)
{
	EECR = 0;
	EEAR = adr;			//设置地址
	EEDR = c;			//写数据
		
	s(EECR, 2);
	s(EECR, 1);
	
	while (b(EECR, 1));		//等待操作结束
}
#endif