RTC(實時時鐘)功能使用方法

SM59R RTC 功能使用方法
RTC(實時時鐘)功能使用方法
1
適用產品：SM59R16A5/ SM59R09A5/ SM59R05A5
2
RTC 使用說明：
1. 建內一組 RTC，時間具有秒、分、時、日、星期、月、年。
2. RTC 晶振選用 32.768KHz，匹配電容建議使用 25pF，或依實際晶振做調教。
3. 二種中斷，分別，為 period interrupt 和 ALARM interrupt，且共用 interrupt vector(8Bh)。
32768Hz
devider
RTC counter
Second
(0~59)
RTC counter
Minute
(0~59)
RTC counter
Hour
(0~23)
RTC counter
Day
(1~31)
RTC counter
Month
(1~12)
RTC counter
Year
(00~99)
RTC counter
Week
Alarm INT
Alarm Reg.
(Min, Hour, Day, Week, Month)
Periodical INT
Counter (0.5 Sec)
Periodical INT
Counter (1 Sec)
Periodical INT
Counter (0.5Min)
Compare logic
Periodical INT
Counter (1 Min)
Periodical INT
Counter (0.5 Hour)
Periodical INT
Counter (1 Hour)
Periodical INT
實時時鐘與相關暫存器控制圖(一)
實時時鐘與相關暫存器控制圖(二)
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
1
Ver.A 2010/06
SM59R RTC 功能使用方法
4. RTC 功能在硬件規劃時必須注意，依系統選用內振和外振會有差異，如下說明：
使用 RTC 功能，且系統使用外部晶振時： 使用 RTC 功能，且系統使用內部晶振時：
„
RTC 晶振則使用#16 及#17
„
RTC 晶振則使用#18 及#19
„
系統晶振腳位使用#18 和#19
„
建議電路如下圖：
„
建議電路如下圖：
16
17
18
FRTC
19
X32OUT/WR/P3.6
X32IN/RD/P3.7
X32OUT/P5.4/XTAL2
X32IN/P5.5/XTAL1
20
3
RTC 相關暫存器：
Mnemonic
Description
Direct
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RESET
RTC
RTCADDR
RTC 地址
9Eh
RTCDATA
RTC 數據
9Fh
Mnemonic
Description
Address
-
-
-
-
RTCADDR[3:0]
00H
RTCDATA[7:0]
Bit 7
Bit 6
Bit 5
00H
Bit 4
Bit 3
ALARMIF
PeriodIntEn
Bit 2
Bit 1
Bit 0
RESET
RTC function
RTCCTRL
RTC 控制暫存器
00h
RTCen
SEC
RTC 秒暫存器
01h
-
MIN
PeriodIF
SEC[6:4]
RTC 分暫存器
02h
-
HOUR
RTC 時暫存器
03h
-
-
DAY
RTC 日暫存器
04h
-
-
RTC 星期暫存器
05h
-
-
WEEK
ALARMInten
MIN[6:4]
HOUR[5:4]
DAY[5:4]
-
INT_SEL[2:0]
SEC[3:0]
-
-
00h
00h
MIN[3:0]
00h
HOUR[3:0]
00h
DAY[3:0]
01h
WEEK[2:0]
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
2
Ver.A 2010/06
06h
SM59R RTC 功能使用方法
MONTH
RTC 月暫存器
06h
YEAR
RTC 年暫存器
07h
RTC 分示警
08h
MINen
ALMHOUR
RTC 時示警
09h
HOURen
-
ALMDAY
RTC 日示警
10h
DAYen
-
RTC 星期示警
11h
WEEKen
-
-
-
RTC 月示警
12h
-
-
ALMMONTH[4]
ALMMIN
ALMWEEK
ALMMONT
H
Mnemonic: RTCCTRL
7
6
RTCen
PeriodIF
-
-
-
MONTH[4]
YEAR[7:4]
ALMMIN[6:4]
MONTHe
n
5
ALARMInten
4
ALARMIF
ALMHOUR[5:4]
ALMDAY[5:4]
3
PeriodIntEn
-
MONTH[3:0]
01h
YEAR[3:0]
00h
ALMMIN[3:0]
00h
ALMHOUR[3:0]
00h
ALMDAY[3:0]
00h
ALMWEEK[2:0]
ALMMONTH[3:0]
2
1
INT_SEL[2:0]
Address: 00H
0
Reset
00h
RTCen: RTC 電路啟動位元
0: 禁止
1: 啟動
PeriodIF: 週期性中斷旗標位元
1: RTC 中斷由週期性中斷旗標位元產生.他必須由軟體清零.
ALARMInten: 示警中斷啟動位元
當示警數值與RTC數值相等時將產生示警中斷.
0: 示警中斷禁止
1: 示警中斷啟動
ALARMIF: 示警中斷旗標位元
1: RTC 中斷由示警中斷產生.他必須由軟體清零.
PeriodIntEn: 週期性中斷啟動位元
0: 禁止
1: 啟動
INT_SEL[2:0]: RTC 週期性中斷之週期由INT_SEL[2:0]選擇
000: 設定為每經過0.5秒產生週期性中斷
001: 設定為每經過1秒產生週期性中斷
010: 設定為每經過0.5分產生週期性中斷
011: 設定為每經過1分產生週期性中斷
100: 設定為每經過0.5小時產生週期性中斷
101: 設定為每經過1小時產生週期性中斷
附注: 週期性中斷的計數將從RTC暫存器寫入的值開始計數.
舉例來說，現在時間為 3:23，我們設定INT_SEL[2:0]為0.5小時；第一個週期性中斷將在
3:53產生，不是3:30。
Mnemonic: SEC
7
6
5
SEC[6:4]
4
3
2
1
SEC[3:0]
Address: 01H
0
Reset
00H
SEC[6:0]: 以BCD格式顯示目前秒數,區間為0~59秒.
SEC[6:4]: 此3位代表秒之十位.
SEC[3:0]: 此4位代表秒之個位.
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
3
Ver.A 2010/06
00h
00h
SM59R RTC 功能使用方法
Mnemonic: MIN
7
6
5
MIN[6:4]
4
MIN[3:0]
Address: 02H
0
Reset
00H
3
2
1
HOUR[3:0]
Address: 03H
0
Reset
00H
3
2
3
2
1
MIN[6:0]: 以BCD格式顯示目前分鐘數,區間為0~59分鐘.
MIN[6:4]: 此3位代表分鐘之十位.
MIN[3:0]: 此4位代表分鐘之個位.
Mnemonic: HOUR
7
6
5
4
HOUR[5:4]
HOUR[5:0]: 以BCD格式顯示目前時數,區間為0~23小時.
HOUR[5:4]: 此2位代表時之十位.
HOUR[3:0]: 此4位代表時之個位.
Mnemonic: DAY
7
6
5
4
DAY[5:4]
1
DAY[3:0]
Address: 04H
0
Reset
00H
DAY[5:0]: 以BCD格式顯示目前日期,區間為0~31日.
DAY[5:4]: 此2位代表日期之十位.
DAY[3:0]: 此4位代表日期之個位.
Mnemonic: WEEK
7
6
5
4
3
2
1
WEEK[2:0]
Address: 05H
0
Reset
00H
WEEK[2:0]: 顯示目前星期.
此暫存器必須由使用者自行填入,並不會於填入年月日後自動產生.
000: 星期日
001: 星期一
010: 星期二
011: 星期三
100: 星期四
101: 星期五
110: 星期六
Mnemonic: MONTH
7
6
5
4
MONTH[4]
3
2
1
MONTH[3:0]
Address: 06H
0
Reset
00H
MONTH[4:0]: 以BCD格式顯示目前月份,區間為1~12月.
MONTH[4]: 此位代表月之十位.
MONTH[3:0]: 此4位代表月之個位.
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
4
Ver.A 2010/06
SM59R RTC 功能使用方法
Mnemonic: YEAR
7
6
5
YEAR[7:4]
4
3
2
1
YEAR[3:0]
Address: 07H
0
Reset
00H
3
2
1
ALMMIN[3:0]
Address: 08H
0
Reset
00H
YEAR[7:0]: 以BCD格式顯示目前年份,區間為0~99年.
YEAR[7:4]: 此4位代表年之十位.
YAER[3:0]: 此4位代表年之個位.
Mnemonic: ALMMIN
7
6
5
MINen
ALMMIN[6:4]
4
MINen: 分示警啟動位元
0: 禁止; ALMMIN[6:0]填入值不需與RTC值比較,也不會產生示警中斷(ALARM INT).
1: 啟動; ALMMIN[6:0]填入值需與RTC值比較,並產生示警中斷(ALARM INT).
ALMMIN[6:0]: 以BCD格式設定示警中斷之分鐘數,區間為0~59分鐘.
ALMMIN[6:4]: 此3位設定示警中斷分鐘之十位.
ALMMIN[3:0]: 此4位設定示警中斷分鐘之個位.
Mnemonic: ALMHOUR
7
6
5
4
HOURen
ALMHOUR[5:4]
3
2
1
ALMHOUR[3:0]
0
Address: 09H
Reset
00H
HOURen: 時示警啟動位元
0: 禁止; ALMHOUR[5:0]填入值不需與RTC值比較,也不會產生示警中斷(ALARM INT).
1: 啟動; ALMHOUR[5:0]填入值需與RTC值比較,並產生示警中斷(ALARM INT).
ALMHOUR[5:0]: 以BCD格式設定示警中斷之時,區間為0~23時.
ALMHOUR[5:4]: 此2位代表示警中斷時之十位.
ALMHOUR[3:0]: 此4位代表示警中斷時之個位.
Mnemonic: ALMDAY
7
6
DAYen
-
5
4
ALMDAY[5:4]
3
2
1
ALMDAY[3:0]
0
Address: 10H
Reset
00H
DAYen: 日示警啟動位元
0: 禁止; ALMDAY[5:0]填入值不需與RTC值比較,也不會產生示警中斷(ALARM INT).
1: 啟動; ALMDAY[5:0]填入值需與RTC值比較,並產生示警中斷(ALARM INT).
ALMDAY[5:0] 以BCD格式設定示警中斷之日期,區間為0~31日.
ALMDAY[5:4]: 此2位代表示警中斷日期之十位.
ALMDAY[3:0]: 此4位代表示警中斷日期之個位.
Mnemonic: ALMWEEK
7
6
5
WEEKen
4
3
2
1
ALMWEEK[2:0]
0
Address: 11H
Reset
00H
WEEKen: 星期示警啟動位元
0: 禁止; ALMWEEK[2:0]填入值不需與RTC值比較,也不會產生示警中斷(ALARM INT).
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
5
Ver.A 2010/06
SM59R RTC 功能使用方法
1: 啟動; ALMWEEK[2:0]填入值需與RTC值比較,並產生示警中斷(ALARM INT).
ALMWEEK[2:0] 示警星期設定
000: 星期日
001: 星期一
010: 星期二
011: 星期三
100: 星期四
101: 星期五
110: 星期六
Mnemonic: ALMMONTH
7
6
5
MONTHen
-
4
ALMMONTH[4]
3
2
1
ALMMONTH[3:0]
0
Address: 12H
Reset
00H
MONTHen: 月示警啟動位元
0: 禁能; ALMMONTH[4:0]填入值不需與RTC值比較,也不會產生示警中斷(ALARM INT).
1: 啟動; ALMMONTH[4:0]填入值需與RTC值比較,並產生示警中斷(ALARM INT).
ALMMONTH[4:0]: 以BCD格式設定示警中斷之月份,區間為1~12月.
ALMMONTH[4]: 此位代表示警中斷月之十位.
ALMMONTH[3:0]: 此4位代表示警中斷月之個位.
4
RTC 中斷
4.1 中斷向量表(Interrupt vectors table)：
Interrupt Vector
Interrupt Number
Address
*(use Keil C Tool)
IE0 – External interrupt 0
0003h
0
TF0 – Timer 0 interrupt
000Bh
1
IE1 – External interrupt 1
0013h
2
TF1 – Timer 1 interrupt
001Bh
3
RI0/TI0 – Serial channel 0 interrupt
0023h
4
TF2/EXF2 – Timer 2 interrupt
002Bh
5
PWMIF – PWM interrupt
0043h
8
SPIIF – SPI interrupt
004Bh
9
ADCIF – A/D converter interrupt
0053h
10
KBIIF – keyboard Interface interrupt
005Bh
11
LVIIF – Low Voltage Interrupt
0063h
12
IICIF – IIC interrupt
006Bh
13
RI1/TI1 – Serial channel 1 interrupt
0083h
16
RTC/ALARM interrupt
008Bh
17
Interrupt Request Flags
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
6
Ver.A 2010/06
SM59R RTC 功能使用方法
Comparator interrupt
0093h
18
*See Keil C about C51 User’s Guide about Interrupt Function description
4.2 中斷相關暫存器(Interrupt SFR)
Mnemonic
Description
Bit 7
Direct
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RESET
Interrupt
IEN0
IEN1
IEN2
IRCON
IRCON2
IP0
IP1
Interrupt Enable
0 register
Interrupt Enable
1 register
Interrupt Enable
2 register
Interrupt request
register
Interrupt request
register 2
Interrupt priority
level 0
Interrupt priority
level 1
A8h
EA
-
ET2
ES0
ET1
EX1
ET0
EX0
00h
B8h
EXEN2
-
IEIIC
IELVI
IEKBI
IEADC
IESPI
IEPWM
00h
9Ah
-
-
-
-
-
ECmpI
ERTC
ES1
00h
C0H
EXF2
TF2
IICIF
LVIIF
KBIIF
ADCIF
SPIIF
PWMIF
00H
97H
-
-
-
-
-
CmpIF
RTCIF
-
00H
A9h
-
-
IP0.5
IP0.4
IP0.3
IP0.2
IP0.1
IP0.0
00h
B9h
-
-
IP1.5
IP1.4
IP1.3
IP1.2
IP1.1
IP1.0
00h
Interrupt Enable 0 register(IEN0)
Mnemonic: IEN0
Address: A8h
7
6
5
4
3
2
1
0
Reset
EA
-
ET2
ES0
ET1
EX1
ET0
EX0
00h
EA: EA = 0 : disable all interrupt.
EA = 1 : enable all interrupt.
ET2: ET2 = 0 : 禁能 Timer 2 溢位中斷及 Timer 2 T2EX 外部中斷。
(disable Timer 2 overflow interrupt or Timer 2 external reload interrupt.)
ET2 = 1 : 致能 Timer 2 溢位中斷及 Timer 2 T2EX 外部中斷。
(enable Timer 2 overflow interrupt or Timer 2 external reload interrupt.)
ES0: ES0=0 – Disable Serial channel 0 interrupt.
ES0=1 – Enable Serial channel 0 interrupt.
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
7
Ver.A 2010/06
SM59R RTC 功能使用方法
ET1: ET1=0 – Disable Timer 1 overflow interrupt.
ET1=1 – Enable Timer 1 overflow interrupt.
EX1: EX1=0 – Disable external interrupt 1.
EX1=1 – Enable external interrupt 1.
ET0: ET0=0 – Disable Timer 0 overflow interrupt.
ET0=1 – Enable Timer 0 overflow interrupt.
EX0: EX0=0 – Disable external interrupt 0.
EX0=1 – Enable external interrupt 0.
Interrupt Enable 2 register(IEN2)
Mnemonic: IE2
Address: 9Ah
7
6
5
4
3
2
1
0
Reset
-
-
-
-
-
ECmpI
ERTC
ES1
00h
ECmpI: ECmpI =0 – Disable Comparator interrupt.
ECmpI =1 – Enable Comparator interrupt(include comparator_0 and comparator_1).
ERTC: ERTC =0 – Disable RTC interrupt.
ERTC =1 – Enable RTC interrupt(include Periodical and Alarm Int).
ES1: ES1=0 – Disable Serial channel 1 interrupt.
ES1=1 – Enable Serial channel 1 interrupt.
Interrupt request register 2(IRCON2)
Mnemonic:
Address: 97h
7
6
5
4
3
2
1
0
Reset
-
-
-
-
-
CmpIF
RTCIF
-
00H
RTCIF RTC interrupt flag(include Periodical and Alarm Int).
HW will clear this flag automatically when enter interrupt vector.
SW can clear this flag also.(in case RTC INT disable)
CmpIF Comparator interrupt flag,
HW will clear this flag automatically when enter interrupt vector.
SW can clear this flag also.(in case analog comparator INT disable)
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
8
Ver.A 2010/06
SM59R RTC 功能使用方法
5
Timer 2 中斷應用參考程序及設定：
(1) 中斷致能設定：
IEN2
|= 0x02;
// Enable RTC_INT.
EA
= 1;
// All interrupt enable
RTCADDR = RTCCTRL;
RTCDATA = 0xA8;
// RTCen=1, ALARMInten=1, PeriodIntEn=1, Period=0.5 sec
(2) 中斷程序表示：
void ISR_RTC(void) interrupt 17
{
RTCADDR = RTCCTRL;
if(RTCDATA & PeriodIF)
{
// Must clear by software write "0".
RTCADDR = RTCCTRL;
RTCDATA &= (~PeriodIF);
}
else if(RTCDATA & ALARMIF)
{
// Must clear by software write "0".
RTCADDR = RTCCTRL;
RTCDATA &= (~ALARMIF);
}
// HW will clear this flag automatically.
//IRCON2 &= (~RTCIF);
}
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
9
Ver.A 2010/06
SM59R RTC 功能使用方法
6
RTC 範例程式說明:
6.1 此範例可使用超機終端機做通訊，並依據操作說明輸入選項及設定即可，超機終端機請設定如下：
7
RTC 應用的範例程式(一)
Description
Define
//以下定義已加入 SM59R16A5.h
/* RTC Define */
#define RTCCTRL
0
#define RTCSEC
1
#define RTCMIN
2
#define RTCHOUR
3
#define RTCDAY
4
#define RTCWEEK
5
#define RTCMONTH
6
#define RTCYEAR
7
#define RTCALMMIN
8
#define RTCALMHOUR 9
#define RTCALMDAY
10
#define RTCALMWEEK 11
#define RTCALMMONTH 12
#define
#define
#define
#define
#define
RTCen
PeriodIF
ALARMInten
ALARMIF
PeriodIntEn
0x80
0x40
0x20
0x10
0x08
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
10
Ver.A 2010/06
SM59R RTC 功能使用方法
#define RTCIF
Main program
0X02
#define RTC_half_sec
#define RTC_one_sec
#define RTC_half_min
#define RTC_one_min
#define RTC_half_hour
#define RTC_one_hour
#include <stdio.h>
#include <SM59R16A5.h>
xdata
xdata
xdata
xdata
char
char
char
char
0
1
2
3
4
5
CMD_001=0, CMD_002=0;
RTC_BFU[13];
RTC_Period_target=5;
RTC_Period_count=0;
#define Pause_RTC_INT() IEN2
#define Gono_RTC_INT() IEN2
&= 0xFD;
|= 0x02;
// Disable RTC_INT.
// Enable RTC_INT.
/*void delay(int dd)
{
while(dd--);
} */
void Reset_MCU(void)
{
TAKEY = 0x55;
TAKEY = 0xAA;
TAKEY = 0x5A;
SWRES = 0xFF;
}
void Show_BCD(char dat)
{
putchar((dat>>4) | 0x30);
putchar((dat&0x0F) | 0x30);
}
void Show_Manual(void)
{
printf ("\n");
printf ("SM59R16A5 RTC manual: \n");
printf ("1. RTC now \n");
printf ("2. SET RTC time\n");
printf ("3. SET Period \n");
printf ("4. ON/OFF Period \n");
printf ("5. SET ALARM \n");
printf ("6. ON/OFF ALARM \n");
printf ("Other. System Reset!! \n");
printf ("Enter:");
}
void Write_RTC_SFR(char addr, char dat)
{
RTCADDR = addr; RTCDATA = dat;
}
char Read_RTC_SFR(char addr)
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
11
Ver.A 2010/06
SM59R RTC 功能使用方法
{
char dat;
RTCADDR = addr; dat = RTCDATA;
return dat;
}
void Read_RTC_Now_Time(void)
{
RTC_BFU[RTCYEAR]
= Read_RTC_SFR(RTCYEAR);
RTC_BFU[RTCMONTH]
= Read_RTC_SFR(RTCMONTH);
RTC_BFU[RTCDAY]
= Read_RTC_SFR(RTCDAY);
RTC_BFU[RTCWEEK]
= Read_RTC_SFR(RTCWEEK);
RTC_BFU[RTCHOUR]
= Read_RTC_SFR(RTCHOUR);
RTC_BFU[RTCMIN]
= Read_RTC_SFR(RTCMIN);
RTC_BFU[RTCSEC]
= Read_RTC_SFR(RTCSEC);
}
void Show_RTC_Now_Time(void)
{
printf("RTC Now:\t");
Read_RTC_Now_Time();
Show_BCD( 0x20 );
Show_BCD( RTC_BFU[RTCYEAR] );
putchar(0x2F);
Show_BCD( RTC_BFU[RTCMONTH] );
putchar(0x2F);
Show_BCD( RTC_BFU[RTCDAY] );
putchar(0x20);
// year
//
//
//
//
//
/
month
/
day
SPACE
putchar(0x28);
Show_BCD( RTC_BFU[RTCWEEK] );
putchar(0x29);
printf("\t");
//
//
//
//
(
week
)
tab
Show_BCD( RTC_BFU[RTCHOUR] );
putchar(0x3A);
Show_BCD( RTC_BFU[RTCMIN] );
putchar(0x3A);
Show_BCD( RTC_BFU[RTCSEC] );
printf("\n");
//
//
//
//
//
hour
:
min
:
sec
}
void Show_RTC_ALARM_Set(void)
{
RTCADDR = RTCCTRL;
if(RTCDATA&0x20)
printf("ALARM Status:\tON\n");
else
printf("ALARM Status:\tOFF\n");
printf("ALARM Setting:\tYYYY/MM/DD(week)hr:min\n");
printf("\t\t");
RTCADDR = RTCYEAR;
putchar(0x2F);
Show_BCD( 0x20 );
Show_BCD( RTCDATA );
// year
// /
Show_BCD(Read_RTC_SFR(RTCALMMONTH) & 0x1F);
// month
putchar(0x2F);
// /
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
12
Ver.A 2010/06
SM59R RTC 功能使用方法
Show_BCD(Read_RTC_SFR(RTCALMDAY) & 0x3F );
putchar(0x20);
// day
// SPACE
putchar(0x28);
Show_BCD(Read_RTC_SFR(RTCALMWEEK) & 0x07 );
putchar(0x29);
printf("\t");
//
//
//
//
Show_BCD(Read_RTC_SFR(RTCALMHOUR) & 0x3F );
putchar(0x3A);
Show_BCD(Read_RTC_SFR(RTCALMMIN) & 0x07 );
printf("\n");
// hour
// :
// min
(
week
)
tab
}
void SET_Period(void)
{
// char h_dat, l_dat;
Show_RTC_Now_Time();
Show_RTC_ALARM_Set();
printf
printf
printf
printf
printf
printf
printf
printf
("\t");
("\t");
("\t");
("\t");
("\t");
("\t");
("\t");
("\t");
printf
printf
printf
printf
printf
printf
printf
printf
("1. 01 sec \n");
("2. 05 sec \n");
("3. 10 sec \n");
("4. 20 sec \n");
("5. 30 sec \n");
("6. 60 sec \n");
("other. Exit!! \n");
("Enter:");
CMD_002 = getchar();
switch (CMD_002)
{
case 0x31: RTC_Period_target= 1;//
break;
case 0x32: RTC_Period_target= 5;//
break;
case 0x33: RTC_Period_target=10;//
break;
case 0x34: RTC_Period_target=20;//
break;
case 0x35: RTC_Period_target=30;//
break;
case 0x36: RTC_Period_target=60;//
break;
default:
break;
}// end switch
printf ("\n");
01 sec
05 sec
10 sec
20 sec
30 sec
60 sec
}
void ON_OFF_Period(void)
{
printf ("\t"); printf ("1.
Set period interrupt ON \n");
printf ("\t"); printf ("other. Set period interrupt OFF \n");
printf ("\t"); printf ("Enter:");
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
13
Ver.A 2010/06
SM59R RTC 功能使用方法
CMD_002 = getchar();
RTCADDR = RTCCTRL;
if(CMD_002==0x31)
printf ("\n");
RTCDATA &= 0xF7;
RTCDATA |= 0x08;
// PeriodIntEn=0
// PeriodIntEn=1
}
void ON_OFF_ALARM(void)
{
printf ("\t"); printf ("1.
Set ALARM ON \n");
printf ("\t"); printf ("other. Set ALARM OFF \n");
printf ("\t"); printf ("Enter:");
CMD_002 = getchar();
RTCADDR = RTCCTRL;
if(CMD_002==0x31)
printf ("\n");
RTCDATA &= 0xDF;
RTCDATA |= 0x20;
// ALARMIntEn=0
// ALARMIntEn=1
}
void SET_RTC_Time(void)
{
char h_dat, l_dat;
while(1)
{
Show_RTC_Now_Time();
printf
printf
printf
printf
printf
printf
printf
printf
printf
printf
("\t");
("\t");
("\t");
("\t");
("\t");
("\t");
("\t");
("\t");
("\t");
("\t");
printf
printf
printf
printf
printf
printf
printf
printf
printf
printf
("<Which one is your choice?>\n");
("1. Year \n");
("2. Month \n");
("3. Day
\n");
("4. Week \n");
("5. Hour \n");
("6. Minute \n");
("7. Second \n");
("other. Exit!!\n");
("Enter:");
CMD_002 = getchar();
printf ("\n");
if(CMD_002<0x31 | CMD_002>0x37) break;
switch (CMD_002)
{
case 0x31:
printf ("\tYear:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCYEAR, (h_dat<<4) | l_dat );
printf ("\n");
break;
case 0x32:
printf ("\tMonth:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCMONTH, (h_dat<<4) | l_dat );
printf ("\n");
break;
case 0x33:
printf ("\tDay:\n");
h_dat
= getchar()-0x30;
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
14
Ver.A 2010/06
SM59R RTC 功能使用方法
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCDAY, (h_dat<<4) | l_dat );
printf ("\n");
break;
case 0x34:
printf ("\tWeek:");
Write_RTC_SFR(RTCWEEK, (getchar()-0x30) | 0x80);
printf ("\n");
break;
case 0x35:
printf ("\tHour:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCHOUR, (h_dat<<4) | l_dat | 0x80);
printf ("\n");
break;
case 0x36:
printf ("\tMinute:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCMIN, (h_dat<<4) | l_dat | 0x80);
printf ("\n");
case 0x37:
printf ("\tSecond:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCSEC, (h_dat<<4) | l_dat | 0x80);
printf ("\n");
break;
default:
break;
}// end switch
}// end while(1)
}
void SET_ALARM(void)
{
char h_dat, l_dat;
while(1)
{
Show_RTC_Now_Time();
Show_RTC_ALARM_Set();
printf ("\t"); printf
printf ("\t"); printf
printf ("\t"); printf
printf ("\t"); printf
printf ("\t"); printf
printf ("\t"); printf
printf ("\t"); printf
printf ("\t"); printf
("<Which one is your choice?>\n");
("1. Month \n");
("2. Day
\n");
("3. Week \n");
("4. Hour \n");
("5. Minute \n");
("Other. Exit!!\n");
("Enter:");
CMD_002 = getchar();
printf ("\n");
if(CMD_002<0x31 | CMD_002>0x35) break;
switch (CMD_002)
{
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
15
Ver.A 2010/06
SM59R RTC 功能使用方法
case 0x31:
printf ("\tMonth:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCALMMONTH, (h_dat<<4) | l_dat | 0x80);
printf ("\n");
break;
case 0x32:
printf ("\tDay:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCALMDAY, (h_dat<<4) | l_dat | 0x80);
printf ("\n");
break;
case 0x33:
printf ("\tWeek:");
Write_RTC_SFR(RTCALMWEEK, (getchar()-0x30) | 0x80);
printf ("\n");
break;
case 0x34:
printf ("\tHour:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCALMHOUR, (h_dat<<4) | l_dat | 0x80);
printf ("\n");
break;
case 0x35:
printf ("\tMinute:");
h_dat
= getchar()-0x30;
l_dat
= getchar()-0x30;
Write_RTC_SFR(RTCALMMIN, (h_dat<<4) | l_dat | 0x80);
printf ("\n");
break;
default:
break;
}// end switch
}// end while(1)
}
void Init_UART(void)
{
SCON = 0x50;
TMOD |= 0x20;
PCON = 0x80;
// TH1 =
0xD0;
// TH1 = 0xFE;
TH1 = 0xFF;
// TH1 = 0xFF;
TCON= 0x40;
TI
= 1;
Printf("")*/
// EA = 1;
// ES = 1;
}
//SCON: serail mode 1, 8-bit UART, enable receive
/* TMOD: timer 1, mode 2, 8-bit reload
//SMOD = 1;
//Baud:2400 fosc=22.1184MHz
OK!
//Baud:57600 fosc=22.1184MHz
OK!
//Baud:115200 fosc=22.1184MHz
OK!
//Baud:57600 fosc=11.0592MHz
OK!
//timer 1 run
/*TI: set TI to send first char of UART
*/
for
//all interrupt enable
//UART enable
void Init_RTC(void)
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
16
Ver.A 2010/06
SM59R RTC 功能使用方法
{
//
//
//
sec
IEN2
IEN2
EA
RTCADDR
RTCDATA
|= 0x02;
&= 0xFD;
= 1;
= RTCCTRL;
= 0x81;
// Enable RTC_INT.
// Disable RTC_INT.
// All interrupt enable
// RTCen=1, ALARMInten=0, PeriodIntEn=0, Period=
1
Write_RTC_SFR(RTCCTRL, RTCen | RTC_one_sec );
Write_RTC_SFR(
Write_RTC_SFR(
Write_RTC_SFR(
Write_RTC_SFR(
Write_RTC_SFR(
Write_RTC_SFR(
Write_RTC_SFR(
RTCYEAR,
RTCMONTH,
RTCDAY,
RTCWEEK,
RTCALMMONTH,
RTCALMDAY,
RTCALMWEEK,
(0x10));
(0x05));
(0x01));
(0x06));
(0x05));
(0x01));
(0x06));
}
void ISR_RTC(void) interrupt 17
{
RTCADDR = RTCCTRL;
if(RTCDATA & PeriodIF)
{
RTC_Period_count++;
if(RTC_Period_count >= RTC_Period_target)
{
printf ("\n<RTC Period ISR occur> ");
Show_RTC_Now_Time();
RTC_Period_count =0;
}
RTCADDR = RTCCTRL;
RTCDATA &= (~PeriodIF);
// Must clear by software write "0".
}
// else if(RTCDATA & ALARMIF)
if(RTCDATA & ALARMIF)
{
printf("\n<RTC ALARM ISR occur>");
Show_RTC_Now_Time();
Show_Manual();
RTCADDR = RTCCTRL;
RTCDATA &= (~ALARMIF);
// Must clear by software write "0".
}
//IRCON2 &= (~RTCIF); //RTCIF=0;// HW will clear this flag automatically.
}
void main(void)
{
Init_UART();
putchar(0x31);
putchar(0x32);
putchar(0x33);
printf("\n");
printf("\n");
printf("\n");
Init_RTC();
Show_RTC_Now_Time();
Show_RTC_ALARM_Set();
while(1)
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
17
Ver.A 2010/06
SM59R RTC 功能使用方法
{
Show_Manual();
CMD_001 = getchar();
printf ("\n\n");
Pause_RTC_INT();
switch (CMD_001)
{
case 0x31:
Show_RTC_Now_Time();
break;
case 0x32:
SET_RTC_Time();
break;
case 0x33:
SET_Period();
break;
case 0x34:
ON_OFF_Period();
break;
case 0x35:
SET_ALARM();
break;
case 0x36:
ON_OFF_ALARM();
break;
default:
Reset_MCU();
break;
}//end switch
//printf("\n");
CMD_001=0;
Gono_RTC_INT();
}
}
Specifications subject to change without notice, contact your sales representatives for the most recent information.
ISSFA-0201
18
Ver.A 2010/06