基于megal66的DS1302时钟芯片操作程序

基于megal66的DS1302时钟芯片操作程序

基于M16的DS1302时钟芯片操作程序clude<ioml6v・h>

#include<macros・h>
//ftinclude"initAVRl. h〃
ttinclude<eeprom・h〉
elude"delayl・h〃
ttinclude〃dsl302・h〃
eludez，display.h〃

#defineuchar unsigned char
#defineuint unsigned int

void m&in(void)

ucharhour, minute, second, date, month, year; //tm wl302(0x80, Oxff);
Tnit_DS1302();

while(l)

//从秒寄存器读数据

minute二((minute&0x70)>>4)*10+ (minute&OxOF) ; //将读出

数据转化

display(3,minute/10);
display(4, minute%10) ; //显示分钟

display(5,17);

hour二tmrl302(0x85);
hour=((hour&0x70) »4)*10 + (hour&OxOF) ; //将读出数据转化

display(0,hour/10);
display(1,hour%10) ;//显示小吋

display(2,17);

/*date= tm rl302 (0x87):
date二((date&0x70)>>4)*10 + (date&OxOF) ; //将读出数据转化

display(6, date/10);
display (7, date%10) ;//显示日*/

Amonth二tm_rl302(0x89):
month=((month&0x70)»4)*10+ (month&OxOF) ; //将读出数据转化

display(3,month/10);
display(4, month%10) ;//显示月

display(5,17);*/

Ayear = tm rl302 (0x8d);
year二((year&0x70)〉〉4)*10+ (year&OxOF) ; //将读出数据转化

display(0,year/10);
display(1, year%10) ;//显示年份

display(2,17) ;*/

DS1302程序

#include<ioml6v.h>

#include<macros・h>//^include "initAVRl.h" ttinclude <eeprom・h>ttinclude "delayl.h〃ttinclude〃dsl302.h〃

#defineuchar unsigned char

#defineuint unsigned int

//端口设置//////////////////////////

ttdefine RST PD4

ftdefine DAT PD5

ttdefineCLK PD6

#defineport PORTD ttdefine ddr DDRD #define pin PIND

////////////////////////////////////ftdefineDAT IN ddr &二"BIT(DAT) ttdefine DAT OUT ddr |二BIT(DAT) ftdefine DAT L port
&二"BIT(DAT)ttdefine DAT H port|= BIT (DAT)

#define	RST H	port = BIT (RST)
#define	RST L	port &二"BIT(RST)
#define	CLK H	port |二BIT (CLK)
#define	CLK L	port &二〜BIT(CLK)
#define	read	pin & BIT(DAT)

unsignedchar tmrbyte (void) //读一个字节{unsigned

chari,j,dat, k;

DATIN;

delaynus(5);

for(i=0; i<8; i++) //连续读8个二进制位数据

{

dat»=l;

if(read)

dat|=0x80;

CLKH;

delay_nus(20); //稍微等待

CLK_L;; //拉低SCLK,形成脉冲下降沿

delay_nus(20) ; //稍微等待

}

returndat;

voidtmwbyte (unsigned char dat) //写一个字节{unsignedchar i, j;
unsignedchar testb;
DAT_0UT;
CLKL;
delay_nus (20);
for(j=l；j〈=8;j++)
{if(dat & 0x01)
DATH;//写1
else
DATL; //写0

delay nus (20); CLK _H; delay nus (20);

CLKL;
dat〉＞二1;

uchar tm rl302 (uchar ucAddr) {
uchar ucDa;
DAT OUT;
delay nus (20);
RST_L;
delay nus (20);
CLKL;

delaynus (20);
RST」；
delaynus (20);
tmwbyte(ucAddr) ; //地址，命令ucDa=tmrbyte() ;//读lByte数据CLKH; RST L;
returnucDa;

voidtm wl302(uchar ucAddr, uchar ucDa) {RST L; delay nus (20);
CLKL;
delaynus (20);
RST_比delaynus (20);

tmwbyte (ucAddr) ; tmwbyte (ucDa) ;

//地址，命令

delaynus (20);
CLKH;
delaynus (20);
RSTL;
delaynus (20);
DATIN;
delaynus (20);

voidInit DS1302(void)
{unsigned char flag;
RST_L;
CLK—L;

DDRDl= (l«RST) | (1«CLK);
flag二tm_rl302 (0x81);

if(flag&0x80)//判断时钟芯片是否关闭
{

//根据写状态寄存器

//根据写秒寄存

//根据写年寄存器命

//打开充电功能选择