C语言驱动之配置RTC（基于S3C2440开发板）
这是rtc.c文件
#include
#include
#include "rtc.h"
#include "irq.h"
#include "lcd.h"
#include "led.h"
#include "bee.h"
void RTC_Init()
{
//RTC初始化
TDATE t={0,0,0,10,5,2018};
GPBCON |= (0x1 << 10);//将所有的led1（GPB5）设置为输出模式
GPBDAT |= (0x1 << 5);
RTC_Set(&t);
}
//获取RTC时间
void RTC_Get(TDATE *t)
{
RTCCON |= 1 << 0; //先打开RTC控制器使能,设置完时间后必须禁止RTC控制器使能
t->tm_year = RTC_BCD2INT(BCDYEAR) + 2000;
t->tm_mon = RTC_BCD2INT(BCDMON);
t->tm_mday = RTC_BCD2INT(BCDDATE);
t->tm_hour = RTC_BCD2INT(BCDHOUR);
t->tm_min = RTC_BCD2INT(BCDMIN);
t->tm_sec = RTC_BCD2INT(BCDSEC);
t->tm_wday = RTC_BCD2INT(BCDDAY);
RTCCON &= ~(1 << 0);
}
//设置RTC时间
void RTC_Set(const TDATE *t)
{
RTCCON |= 1 << 0; //先打开RTC控制器使能,设置完时间后必须禁止RTC控制器使能
BCDYEAR = RTC_INT2BCD(t->tm_year - 2000);
BCDMON = RTC_INT2BCD(t->tm_mon);
BCDDATE = RTC_INT2BCD(t->tm_mday);
BCDHOUR = RTC_INT2BCD(t->tm_hour);
BCDMIN = RTC_INT2BCD(t->tm_min);
BCDSEC = RTC_INT2BCD(t->tm_sec);
BCDDAY = RTC_INT2BCD(t->tm_wday);
RTCCON &= ~(1 << 0);
}
/********************************
*
* TICK中断初始化
*
*********************************/
void RTC_IRQ_TICK_Init(unsigned char tick)
{
//中断安装函数
irq_install(IRQ_TICK, RTC_timeDisplay);
TICNT=tick | 0x80; //一般设置tick(127)周期1s ,开启Tick(第7位使能/禁止)
}
/********************************
*
* 显示实时时间
*
*********************************/
void RTC_timeDisplay()
{
TDATE t;
char ch[50];
char ch1[50];
RTC_Get(&t); //读取RT时间
sprintf(ch,"%d-%02d-%02d", t.tm_year,t.tm_mon,t.tm_mday);
sprintf(ch1,"%02d:%02d:%02d",t.tm_hour,t.tm_min,t.tm_sec);
lcd_print(295,5,ch, BLUE, WHITE);
lcd_print(395,5,ch1, RED, WHITE);
}
//设置ALARM时间
void Alarm_Set(const TDATE *t)
{
RTCCON |= 1 << 0; //先打开RTC控制器使能,设置完时间后必须禁止RTC控制器使能
ALMYEAR = RTC_INT2BCD(t->tm_year - 2000);
ALMMON = RTC_INT2BCD(t->tm_mon);
ALMDATE = RTC_INT2BCD(t->tm_mday);
ALMHOUR = RTC_INT2BCD(t->tm_hour);
ALMMIN = RTC_INT2BCD(t->tm_min);
ALMSEC = RTC_INT2BCD(t->tm_sec);
BCDDATE = RTC_INT2BCD(t->tm_wday);
RTCALM = 0xFF;
RTCCON &= ~(1 << 0);
}
----------------------------------------------------------华丽的分割线------------------------------------------------------------------
这是rtc.h文件
#ifndef _RTC_H_
#define _RTC_H_
#include "type.h"
#define RTC_BCD2INT(X) (((((X)&0xF0)>>4)*10)+((X)&0xF))
#define RTC_INT2BCD(X) ((((X)/10)<<4)+((X)%10))
typedef struct
{
u8 tm_sec;
u8 tm_min;
u8 tm_hour;
u8 tm_mday;
u8 tm_mon;
u16 tm_year;
u8 tm_wday;
}TDATE;
void RTC_Init(void);
void RTC_Set(const TDATE *t);
void RTC_Get(TDATE *t);
void RTC_IRQ_TICK_Init(unsigned char tick);
void RTC_timeDisplay(void);
void Alarm_Set(const TDATE *t);
#endif