main.c

AVR单片机对DS3231的读写操作源代码

#include <iom16v.h>

#define uchar unsigned char 
#define uint  unsigned int

void delay(uint ticks);//延时

unsigned char const Tab[]={0x14,0x9F,0x38,0x1A,0x93,0x52,0x50,0x1F,
                          0x10,0x12,0x11,0xD0,0x74,0x98,0x70,0x71};

void main()
{
 uchar Address;
 init_devices();
 //向0到127这128个单元写顺序写入0到127
 for(Address=0;Address!=128;Address++)Write24c02_OneByte(Address,Address);
 PORTA=0x80;
 while(1)
 {
  for(Address=0;Address!=128;Address++)
  {
   //把0到128单元的内容顺序读出并显示
   PORTC=Tab[Read24c02_OneByte(Address)&0x0f];
   delay(5000);
  }

 }
}

void delay(uint ticks)
{
 uchar i;
 while(ticks--)for(i=100;i!=0;i--);//约0.1mS
}