PCF8563底层驱动程序

1、*/ PCF8563底层驱动程序/*/#include <msp430x14x.h>#include <math.h>#include "msp430_m.h"#include "delay.h"/*/#define ADDR_RD 0xa3#define ADDR_WR 0xa2/*#define REG_CTL1 0x00#define REG_CTL2 0x01#define REG_SEC 0x02#define REG_MIN 0x03#define REG_HOUR 0x04#define REG_DAY 0x05#d

2、efine REG_WEEK 0x06#define REG_MON 0x07#define REG_YEAR 0x08#define REG_ALARM_MIN 0x09#define REG_ALARM_HOUR 0x0a#define REG_ALARM_DAY 0x0b#define REG_ALARM_WEEK 0x0c#define REG_FREQ 0x0d#define REG_TMRCTL 0x0e#define REG_TMR 0x0f/*#define sclk_pcf8563 BIT5#define sda_pcf8563 BIT7#define port_rtc P2

3、OUT/*#define set_sclk() bitclr(P2DIR,sclk_pcf8563)#define clr_sclk() bitset(P2DIR,sclk_pcf8563)#define set_sda() bitclr(P2DIR,sda_pcf8563)#define clr_sda() bitset(P2DIR,sda_pcf8563)bit error_bit;/*/*/static void delay_nop8(void)_nop_();_nop_();_nop_();_nop_();/*/static void Start(void) / ok,启动I2C总线s

4、et_sda();set_sclk();clr_sda();clr_sclk();/*/static void Stop(void) / okclr_sda();set_sclk();set_sda();clr_sclk();/*/static void Ack(void) / unused!clr_sda();set_sclk();clr_sclk();set_sda();/*/static void NoAck(void) / okset_sda();set_sclk();clr_sclk();clr_sda();/*/static bit TestAck(void)bit ErrorBi

5、t;set_sda();set_sclk();ErrorBit=0;if (bittest(P2IN,sda_pcf8563)ErrorBit=1; / 0,ok,1,error!clr_sclk();return ErrorBit;/*/static void Write8Bit(unsigned char input)unsigned char i;for(i=0;i<8;+i)if (input&0x80)set_sda();set_sclk();clr_sclk();clr_sda();elseclr_sda();set_sclk();clr_sclk();input&l

6、t;<=1;/*/static unsigned char Read8Bit(void)unsigned char i,rbyte;rbyte=0;for(i=0;i<8;+i)set_sda();set_sclk();rbyte<<=1;if (bittest(P2IN,sda_pcf8563)rbyte|=0x01;clr_sclk();return(rbyte);/*/void pcf8563_wr(uchar addr,uchar *ptr_data1,uchar length)Start();Write8Bit(ADDR_WR);Ack();Write8Bit

7、(addr);for(;length;-length)Ack();Write8Bit(*ptr_data1+);NoAck();Stop();/*/void pcf8563_rd(uchar addr,uchar *ptr_data1,uchar length)Start();Write8Bit(ADDR_WR);Ack();Write8Bit(addr);Ack();Start();Write8Bit(ADDR_RD);for(;length;-length)Ack();*ptr_data1+=Read8Bit();NoAck();Stop();/*/#if 0uint sec;uchar

8、const arr_init_rtc=0x00, / REG_CTL1 0x000x00, / REG_CTL2 0x010x00, / REG_SEC 0x020x00, / REG_MIN 0x030x08, / REG_HOUR 0x040x01, / REG_DAY 0x050x01, / REG_WEEK 0x060x05, / REG_MON 0x070x04, / REG_YEAR 0x08;uchar arr10;bit flag=1;void main(void)uchar i,j=0;uchar secd20;WDTStop();P2DIR = 0x5f; /0101-1111BP2SEL = 0x00;P2OUT = 0x00;for(i=0;i<sizeof(arr_init_rtc);+i)arri=arr_init_rtci;pcf8563_wr(0,arr,sizeof(