ht1381时钟芯片驱动
#include "global.h"
//时钟芯片ht1381各引脚定义
#define HT1381_CS_GPIO_PORT GPIOD
#define HT1381_CS_GPIO_PIN GPIO_PIN_3
#define HT1381CsHigh() (HT1381_CS_GPIO_PORT->ODR |= (u8)(HT1381_CS_GPIO_PIN))
#define HT1381CsLow() (HT1381_CS_GPIO_PORT->ODR &= (u8)(~HT1381_CS_GPIO_PIN))
#define HT1381_DATA_GPIO_PORT GPIOD
#define HT1381_DATA_GPIO_PIN GPIO_PIN_2
#define HT1381DataHigh() (HT1381_DATA_GPIO_PORT->ODR |= (u8)(HT1381_DATA_GPIO_PIN))
#define HT1381DataLow() (HT1381_DATA_GPIO_PORT->ODR &= (u8)(~HT1381_DATA_GPIO_PIN))
#define HT1381DataOut() GPIO_Init(HT1381_DATA_GPIO_PORT,HT1381_DATA_GPIO_PIN,GPIO_MODE_OUT_PP_HIGH_FAST);
#define HT1381DataIn() GPIO_Init(HT1381_DATA_GPIO_PORT,HT1381_DATA_GPIO_PIN,GPIO_MODE_IN_PU_NO_IT);
#define HT1381DataStatus (HT1381_DATA_GPIO_PORT->IDR & HT1381_DATA_GPIO_PIN)
#define HT1381_CLK_GPIO_PORT GPIOD
#define HT1381_CLK_GPIO_PIN GPIO_PIN_0
#define HT1381ClkHigh() (HT1381_CLK_GPIO_PORT->ODR |= (u8)(HT1381_CLK_GPIO_PIN))
#define HT1381ClkLow() (HT1381_CLK_GPIO_PORT->ODR &= (u8)(~HT1381_CLK_GPIO_PIN))
extern void Int_HT1381(void);
ICTimerTab_t ICTimerTab;
ICTimerTab_t ICTimerTabBuf;
void Delay_us(u8 data)
{
for(u8 i = 0; i <data;i++)
{
nop();
}
}
/********************************************************************
往HT1381写入1Byte数据
********************************************************************/
void Send_HT1380_1Byte(unsigned char tData)
{
unsigned char i;
HT1381DataOut();
for(i=0;i<8;i++)
{
if((tData&0x01) != 0)
{
HT1381DataHigh();
}
else
{
HT1381DataLow();
}
tData >>= 1;
Delay_us(8);
HT1381ClkHigh();
Delay_us(5);
HT1381ClkLow();
Delay_us(5);
}
}
/********************************************************************
往HT1381读取1Byte数据
********************************************************************/
unsigned char Read_HT1380_1Byte(void)
{
unsigned char i,tData;
HT1381DataIn();
for(i=0;i<8;i++)
{
HT1381ClkHigh();
Delay_us(8);
tData >>= 1;
if(!HT1381DataStatus)
{
tData &= 0x7f;
}
else
{
tData |= 0x80;
}
HT1381ClkLow();
Delay_us(5);
}
HT1381DataOut();
return tData;
}
/********************************************************************
* 名称: 往HT1381写入数据
* 说明: 先写地址,后写命令/数据
* 调用: Send_HT1380_1Byte
* 输入: sAddr:HT1381地址,sData:要写的数据
********************************************************************/
void Write_HT1381Addr_1Byte(unsigned char sAddr,unsigned char sData)
{
HT1381CsLow();
Delay_us(5);
HT1381ClkLow();
Delay_us(5);
HT1381CsHigh();
Send_HT1380_1Byte(sAddr); //写地址,命令
Send_HT1380_1Byte(sData); //写1Byte数据
HT1381ClkHigh();
Delay_us(5);
HT1381CsLow();
}
/********************************************************************
* 名称: 读取HT1381某地址的数据
* 说明: 先写地址,后写命令/数据
* 调用: Send_HT1380_1Byte,Read_HT1380_1Byte
* 输入: sAddr:HT1381地址
* 返回值: sData:读取的数据
********************************************************************/
unsigned char Read_HT1381Addr_1Byte(unsigned char sAddr)
{
unsigned char tData;
HT1381CsLow();
Delay_us(5);
HT1381ClkLow();
Delay_us(5);
HT1381CsHigh();
Send_HT1380_1Byte(sAddr); //写地址,命令
tData = Read_HT1380_1Byte(); //写1Byte数据
HT1381ClkHigh();
Delay_us(5);
HT1381CsLow();
return tData;
}
/********************************************************************
* 名称: 读取HT1381当前时间
* 调用: Read_HT1381Addr_1Byte
* 输入: 保存当前时间地址+当前时间格式为: 秒 分 时 日 月 星期 年
* 7Byte (BCD码) 1B 1B 1B 1B 1B 1B 1B
********************************************************************/
void Read_HT1381_NowTimer(void)
{
unsigned char i;
unsigned char sAddr;
unsigned char *p;
sAddr = 0x81;
p =(unsigned char*)&ICTimerTabBuf;
for(i=0;i<7;i++)
{
*p = Read_HT1381Addr_1Byte(sAddr);
p++;
sAddr += 2;
}
}
/********************************************************************
* 名称: 初始化HT1381
* 调用: Write_HT1381Addr_1Byte
* 输入: 初始时间地址+初始时间格式为: 秒 分 时 日 月 星期 年
* 7Byte (BCD码) 1B 1B 1B 1B 1B 1B 1B
********************************************************************/
void Int_HT1381(void)
{
unsigned char i;
unsigned char sAddr;
unsigned char *p;
sAddr = 0x80;
p =(unsigned char*)&ICTimerTabBuf;
Write_HT1381Addr_1Byte(0x8e,0x00); //控制命令,WP=0,写操作?
for(i=0;i<7;i++)
{
Write_HT1381Addr_1Byte(sAddr,*p); //秒,分,时,日,月,星期,年
p++;
sAddr += 2;
}
Write_HT1381Addr_1Byte(0x8e,0x80); //控制命令,WP=1,写保护?
}
/********************************************************************
上电初始化日期时间
********************************************************************/
void Int_Timer(void)
{ //上电读取时钟芯片是否掉电
Read_HT1381_NowTimer();
if((ICTimerTabBuf.TimerSec&0x80) != 0)
{
Read_HT1381_NowTimer();
if((ICTimerTabBuf.TimerSec&0x80) != 0)
{
ICTimerTabBuf.TimerSec = 0x20;
ICTimerTabBuf.TimerMin = 0x57;
ICTimerTabBuf.TimerHour = 0x18;
ICTimerTabBuf.TimerDay = 0x11;
ICTimerTabBuf.TimerMonth = 0x07;
ICTimerTabBuf.TimerWeek = 0x04;
ICTimerTabBuf.TimerYear = 0x13;
Int_HT1381(); //初始化HT1381
}
}
ICTimerTab.TimerSec = (ICTimerTabBuf.TimerSec/16) * 10 + (ICTimerTabBuf.TimerSec%16);
ICTimerTab.TimerMin = (ICTimerTabBuf.TimerMin/16) * 10 + (ICTimerTabBuf.TimerMin%16);
ICTimerTab.TimerHour = (ICTimerTabBuf.TimerHour/16) * 10 + (ICTimerTabBuf.TimerHour%16);
ICTimerTab.TimerDay = (ICTimerTabBuf.TimerDay/16) * 10 + (ICTimerTabBuf.TimerDay%16);
ICTimerTab.TimerMonth = (ICTimerTabBuf.TimerMonth/16) * 10 + (ICTimerTabBuf.TimerMonth%16);
ICTimerTab.TimerWeek = (ICTimerTabBuf.TimerWeek/16) * 10 + (ICTimerTabBuf.TimerWeek%16);
ICTimerTab.TimerYear = (ICTimerTabBuf.TimerYear/16) * 10 + (ICTimerTabBuf.TimerYear%16);
}硬件时钟--ht1381时钟芯片驱动,布布扣,bubuko.com
原文地址：http://blog.csdn.net/a656343072/article/details/38733907
