误差不算大，有误差修正参数就行了。
//@@***********************************************************
//-------------------------------------------------------------
//
// 文件名 :Calender.c
// 描述 :日历时钟模块，用于不带时钟芯片的系统
// 语言 :C
// 作者 :Jean J. Labrosse
// 修改 :李艳平
// 日期 :2002-05-17
// 说明 :原来的程序用于UCII_RTOS中，现移植C51中
//@@***********************************************************
//备注：
//盛唐电子公司移植到EPS112仿真编程器，用于显示测试与数码管试验。
//完成日期：07-04-12
//联系方式:Xg_2004_sy@126.com (025)51615878 13057504110
#define SYS_CLOCK_EN 1
#if SYS_CLOCK_EN
#include "Caltypedef.h"
//#include "string.h"
//#include "stdlib.h"
//#include "Stdio.h"
#include "..\inc\includes.h"
//#include "DriverComm.h"
//#include "HardResource.h"
//#define FOSC 22118400L
//#define FOSC 11059200L
#define FOSC 18432000L
#define MACHINE_NUM 24 /*根据需要调整，如:W777E58=4*/
#define TICKS_PER_SEC 80 /* # of clock ticks to obtain 1 second */
//#define TICKS_PER_SEC 10 //Only for Test
//#define CLK_DATE_EN 1 /* Enable DATE (when 1) */
#define ENTER_CRITICAL() EA=1
#define EXIT_CRITICAL() EA=0
static UCHAR ClkTickCtr; /* Counter used to keep track of system clock ticks */
static UCHAR ClkHr;
static UCHAR ClkMin;
static UCHAR ClkSec; /* Counters for local TIME
*/
/**********************************************************************************************************
* FUNCTION PROTOTYPES
**********************************************************************************************************/
static BOOL ClkUpdateTime(void);
static BOOL ClkIsLeapYear(UINT year);
static void ClkUpdateDate(void);
static void ClkUpdateDOW(void);
#endif
void Init_sys_timer(void);
void Sys_clk_init(void);
void Sys_clk_task(void);
void Clk_format_time(UCHAR mode, char *s);
void Clk_set_time(UCHAR hr, UCHAR min, UCHAR sec);
int Cmp_now_time(UCHAR hr, UCHAR min, UCHAR sec);
/*********************************************************************************************************/
void Set_LEDFlashDot_On(void);
void Set_LEDFlashDot_Off(void);
/*
*********************************************************************************************************
* TIME-OF-DAY CLOCK TASK
*
* Description : This task is created by Sys_clk_init() and is responsible for updating the time and date.
* Sys_clk_task() executes every second.
* Arguments : None.
* Returns : None.
* Notes : CLK_DLY_TICKS must be set to produce 1 second delays.
*********************************************************************************************************
*/
extern uchar ucDispTemperatureCount;
extern bool bDispTemperatureSwitch;
#define c_DispTemperatureIntervalMinute 10 //显示温度的间隔时间(以分钏钟为单位）
//功能：时钟中断任务
static void Sys_clk_task (void)
{
static bool bFlashFlag;
if(++ClkTickCtr==TICKS_PER_SEC)
{
ClkTickCtr=0;
if (ClkUpdateTime() == TRUE)
{
}
if(bFlashFlag)
{
Set_LEDFlashDot_On();
}
else
{
Set_LEDFlashDot_Off();
}
bFlashFlag = !bFlashFlag;
if(ucDispTemperatureCount > 0)
{
ucDispTemperatureCount--;
}
}
}
uchar ucFlagEnableClock; //全局变量是否开启时钟的标志
//@@***********************************************************
//
// 功能: 系统时钟中断服务函数
// 函数: void Sys_tick_isr(void)
// 语言: C
// 输入: NONE
// 输出: NONE
// 作者: 李艳平
// 日期: 2002-05-17
//
//@@***********************************************************
//-------------------------------------------------------------
static void Sys_tick_isr(void) interrupt 5 using 3
{
TF2=0;
// P2_0 = 0;
/*
if(ucFlagEnableClock == 0)
{
RunLedPin = ~RunLedPin; //没有闹钟时闪烁
}
else
{
RunLedPin = 0; //启动闹钟时常亮
}
*/
Sys_clk_task();
}
//@@***********************************************************
//
// 功能: 系统定时器初始化
// 函数: void Vtimer_init(void)
// 语言: C
// 输入: NONE
// 输出: NONE
// 作者: 李艳平
// 日期: 2002-05-17
//
//@@***********************************************************
//-------------------------------------------------------------
void Init_sys_timer(void)
{
BYTE_WORD Init_value;
Sys_clk_init();
T2CON=0x00;
//定时器2使用机器周期作为计数脉冲(Fosc/12)
//Init_value.word=FOSC/((ulong)TICKS_PER_SEC*MACHINE_NUM);
Init_value.word=38400;
TH2=RCAP2H=-Init_value.bytes.high;
TL2=RCAP2L=-Init_value.bytes.low;
// ComSendTxt ("TH2Value", &Init_value, 2);
//启动定时器2工作
ET2=1;
TR2=1;
//开中断总开关
ENTER_CRITICAL();
//TMOD&=0xF0; //使用定时器0,但在中断中需要重新赋初值，因而我更倾向用Timer2
//TMOD|=0x01;
// Init_value.word=FOSC/(TICKS_PER_SEC*MACHINE_NUM);
//TH0=-Init_value.bytes.high;
//TL0=-Init_value.bytes.low;
//ET0=1;
//TR0=1;
}
/*
*********************************************************************************************************
* TIME MODULE INITIALIZATION
* TIME-OF-DAY CLOCK INITIALIZATION
*
* Description : This function initializes the time module. The time of day clock task will be created
* by this function.
* Arguments : None
* Returns : None.
*********************************************************************************************************
*/
//功能：系统时钟初始化
static void Sys_clk_init (void)
{
ClkTickCtr = 0;
Clk_set_time(0,0,0);
}
/*
*********************************************************************************************************
* FORMAT CURRENT DATE INTO STRING
*
* Description : Formats the current date into an ASCII string.
* Arguments : mode is the format type:
* 1 will format the time as "MM-DD-YY" (needs at least 9 characters)
* 2 will format the time as "Day Month DD, YYYY" (needs at least 30 characters)
* 3 will format the time as "YYYY-MM-DD" (needs at least 11 characters)
* s is a pointer to the destination string. The destination string must be large
* enough to hold the formatted date.
* contain
* Returns : None.
* Notes : - A 'switch' statement has been used to allow you to add your own date formats. For
* example, you could display the date in French, Spanish, German etc. by assigning
* numbers for those types of conversions.
* - This function assumes that strcpy(), strcat() and itoa() are reentrant.
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* FORMAT CURRENT TIME INTO STRING
*
* Description : Formats the current time into an ASCII string.
* Arguments : mode is the format type:
* 1 will format the time as "HH:MM:SS" (24 Hour format)
* (needs at least 9 characters)
* 2 will format the time as "HH:MM:SS AM" (With AM/PM indication)
* (needs at least 13 characters)
* s is a pointer to the destination string. The destination string must be large
* enough to hold the formatted time.
* contain
* Returns : None.
* Notes : - A 'switch' statement has been used to allow you to add your own time formats.
* - This function assumes that strcpy() is reentrant.
*********************************************************************************************************
*/
//功能：格式化时间
void Clk_format_time (UCHAR mode, char *s)
{
UCHAR hr;
switch (mode)
{
case 1:
strcpy(s, "HH:MM:SS"); /* Create the template for the selected format */
s[0] = ClkHr / 10 + '0'; /* Convert TIME to ASCII */
s[1] = ClkHr % 10 + '0';
s[3] = ClkMin / 10 + '0';
s[4] = ClkMin % 10 + '0';
s[6] = ClkSec / 10 + '0';
s[7] = ClkSec % 10 + '0';
break;
case 2:
strcpy(s, "HH:MM:SS AM"); /* Create the template for the selected format */
s[9] = (ClkHr >= 12) ? 'P' : 'A'; /* Set AM or PM indicator */
if (ClkHr > 12)
{ /* Adjust time to be displayed */
hr = ClkHr - 12;
}
else
{
hr = ClkHr;
}
s[0] = hr / 10 + '0'; /* Convert TIME to ASCII */
s[1] = hr % 10 + '0';
s[3] = ClkMin / 10 + '0';
s[4] = ClkMin % 10 + '0';
s[6] = ClkSec / 10 + '0';
s[7] = ClkSec % 10 + '0';
break;
case 3: //xg Add 格式为“HHMMSS”
strcpy(s, "000000"); /* Create the template for the selected format */
s[0] = ClkHr / 10 + '0'; /* Convert TIME to ASCII */
s[1] = ClkHr % 10 + '0';
s[2] = ClkMin / 10 + '0';
s[3] = ClkMin % 10 + '0';
s[4] = ClkSec / 10 + '0';
s[5] = ClkSec % 10 + '0';
break;
default:
strcpy(s, "?");
break;
}
}
/*
*********************************************************************************************************
* UPDATE THE TIME
*
* Description : This function is called to update the time (i.e. hours, minutes and seconds)
* Arguments : None.
* Returns : TRUE if we have completed one day.
* FALSE otherwise
* Notes : This function updates ClkSec, ClkMin and ClkHr.
*********************************************************************************************************
*/
//功能：更新时间
static BOOL ClkUpdateTime (void)
{
BOOL newday;
newday = FALSE; /* Assume that we haven't completed one whole day yet */
if (ClkSec >= 59)
{ /* See if we have completed one minute yet */
ClkSec = 0; /* Yes, clear seconds */
if (ClkMin >= 59)
{ /* See if we have completed one hour yet */
ClkMin = 0; /* Yes, clear minutes */
bDispTemperatureSwitch = true; //整点时显示温度
if (ClkHr >= 23)
{ /* See if we have completed one day yet */
ClkHr = 0; /* Yes, clear hours ... */
//时钟计时跨天
newday = TRUE; /* ... change flag to indicate we have a new day */
}
else
{
ClkHr++; /* No, increment hours */
}
}
else
{
ClkMin++; /* No, increment minutes */
if((ClkMin % c_DispTemperatureIntervalMinute) == 0)
{
bDispTemperatureSwitch = true;
}
else
{
bDispTemperatureSwitch = false;
}
}
}
else
{
ClkSec++; /* No, increment seconds */
}
return (newday);
}
//时钟的小时加1操作
void CLK_IncHour(void)
{
if (ClkHr >= 23)
{
ClkHr = 0;
}
else
{
ClkHr++;
}
}
//时钟的小时加1操作
void CLK_IncMinute(void)
{
if (ClkMin >= 59)
{
ClkMin = 0;
}
else
{
ClkMin++;
}
}
/*
*********************************************************************************************************
* SET TIME ONLY
*
* Description : Set the time-of-day clock
* Arguments : hr is the desired hour (0..23)
* min is the desired minutes (0..59)
* sec is the desired seconds (0..59)
* Returns : None.
* Notes : It is assumed that you are specifying a correct time (i.e. there is no range checking
* done by this function).
*********************************************************************************************************
*/
void Clk_set_time (UCHAR hr, UCHAR min, UCHAR sec)
{
EXIT_CRITICAL(); /* Release access to time-of-day clock */
ClkHr = hr;
ClkMin = min;
ClkSec = sec;
ENTER_CRITICAL(); /* Gain exclusive access to time-of-day clock */
}
//@@***********************************************************
//
// 功能: 给定的时间与当前时间比较
// 函数: int Cmp_now_time(UCHAR hr, UCHAR min, UCHAR sec)
// 语言: C
// 输入:
// 输出: 0 相等
// >0 给定时间大于当前时间
// <0 给定时间小于当前时间
// 作者: 李艳平
// 日期: 2002-05-17
//@@***********************************************************
//-------------------------------------------------------------
/*
int Cmp_now_time(UCHAR hr, UCHAR min, UCHAR sec)
{
if(ClkHr!=hr)
return(hr-ClkHr);
else if(ClkMin!= min)
return(min-ClkMin);
else
// return(sec-ClkSec);
sec = sec;
return(0);
}
*/
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