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1 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 KHz, 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 Reg. (Min, Hour, Day, Week, Month) Compare logic Alarm INT Periodical INT Counter (0.5 Sec) Periodical INT Counter (1 Sec) Periodical INT Counter (0.5Min) 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 ) ISSFA Ver.A 2010/06

2 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 系統晶振腳位使用 #18 和 #19 RTC 晶振則使用 #18 及 #19 建議電路如下圖 : 建議電路如下圖 : F RTC X32OUT/WR/P3.6 X32IN/RD/P3.7 X32OUT/P5.4/XTAL2 X32IN/P5.5/XTAL 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 RTCADDR[3:0] 00H RTCDATA RTC 數據 9Fh RTCDATA[7:0] 00H Mnemonic Description Address Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 RESET RTC function RTCCTRL RTC 控制暫存器 00h RTCen PeriodIF ALARMInten ALARMIF PeriodIntEn INT_SEL[2:0] 00h SEC RTC 秒暫存器 01h - SEC[6:4] SEC[3:0] 00h MIN RTC 分暫存器 02h - MIN[6:4] MIN[3:0] 00h HOUR RTC 時暫存器 03h - - HOUR[5:4] HOUR[3:0] 00h DAY RTC 日暫存器 04h - - DAY[5:4] DAY[3:0] 01h WEEK RTC 星期暫存器 05h WEEK[2:0] 06h ISSFA Ver.A 2010/06

3 MONTH RTC 月暫存器 06h MONTH[4] MONTH[3:0] 01h YEAR RTC 年暫存器 07h YEAR[7:4] YEAR[3:0] 00h ALMMIN RTC 分示警 08h MINen ALMMIN[6:4] ALMMIN[3:0] 00h ALMHOUR RTC 時示警 09h HOURen - ALMHOUR[5:4] ALMHOUR[3:0] 00h ALMDAY RTC 日示警 10h DAYen - ALMDAY[5:4] ALMDAY[3:0] 00h ALMWEEK RTC 星期示警 11h WEEKen ALMWEEK[2:0] 00h ALMMONT MONTHe RTC 月示警 12h H n - - ALMMONTH[4] ALMMONTH[3:0] 00h Mnemonic: RTCCTRL Address: 00H RTCen PeriodIF ALARMInten ALARMIF PeriodIntEn INT_SEL[2:0] 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 Address: 01H SEC[6:4] SEC[3:0] 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. ISSFA Ver.A 2010/06

4 Mnemonic: MIN Address: 02H MIN[6:4] MIN[3:0] 00H 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 Address: 03H HOUR[5:4] HOUR[3:0] 00H 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 Address: 04H DAY[5:4] DAY[3:0] 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 Address: 05H WEEK[2:0] 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 Address: 06H MONTH[4] MONTH[3:0] 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. ISSFA Ver.A 2010/06

5 Mnemonic: YEAR Address: 07H YEAR[7:4] YEAR[3:0] 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 Address: 08H MINen ALMMIN[6:4] ALMMIN[3:0] 00H 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 Address: 09H HOURen ALMHOUR[5:4] ALMHOUR[3:0] 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 Address: 10H DAYen - ALMDAY[5:4] ALMDAY[3:0] 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 Address: 11H WEEKen ALMWEEK[2:0] 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). ISSFA Ver.A 2010/06

6 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 Address: 12H MONTHen - - ALMMONTH[4] ALMMONTH[3:0] 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 Request Flags Interrupt Vector Interrupt Number Address *(use Keil C Tool) IE0 External interrupt h 0 TF0 Timer 0 interrupt 000Bh 1 IE1 External interrupt h 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 ISSFA Ver.A 2010/06

7 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 Direct Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 RESET Interrupt IEN0 Interrupt Enable 0 register A8h EA - ET2 ES0 ET1 EX1 ET0 EX0 00h IEN1 Interrupt Enable 1 register B8h EXEN2 - IEIIC IELVI IEKBI IEADC IESPI IEPWM 00h IEN2 Interrupt Enable 2 register 9Ah ECmpI ERTC ES1 00h IRCON Interrupt request register C0H EXF2 TF2 IICIF LVIIF KBIIF ADCIF SPIIF PWMIF 00H IRCON2 Interrupt request register 2 97H CmpIF RTCIF - 00H IP0 Interrupt priority level 0 A9h - - IP0.5 IP0.4 IP0.3 IP0.2 IP0.1 IP0.0 00h IP1 Interrupt priority level 1 B9h - - IP1.5 IP1.4 IP1.3 IP1.2 IP1.1 IP1.0 00h Interrupt Enable 0 register(ien0) Mnemonic: IEN0 Address: A8h 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. ISSFA Ver.A 2010/06

8 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 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 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) ISSFA Ver.A 2010/06

9 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); ISSFA Ver.A 2010/06

10 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 RTCen 0x80 #define PeriodIF 0x40 #define ALARMInten 0x20 #define ALARMIF 0x10 #define PeriodIntEn 0x08 ISSFA Ver.A 2010/06

11 #define RTCIF 0X02 #define RTC_half_sec 0 #define RTC_one_sec 1 #define RTC_half_min 2 #define RTC_one_min 3 #define RTC_half_hour 4 #define RTC_one_hour 5 Main program #include <stdio.h> #include <SM59R16A5.h> xdata char CMD_001=0, CMD_002=0; xdata char RTC_BFU[13]; xdata char RTC_Period_target=5; xdata char RTC_Period_count=0; #define Pause_RTC_INT() IEN2 &= 0xFD; // Disable RTC_INT. #define Gono_RTC_INT() IEN2 = 0x02; // 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 ("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) ISSFA Ver.A 2010/06

12 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 ); // year Show_BCD( RTC_BFU[RTCYEAR] ); putchar(0x2f); // / Show_BCD( RTC_BFU[RTCMONTH] ); // month putchar(0x2f); // / Show_BCD( RTC_BFU[RTCDAY] ); // day putchar(0x20); // SPACE putchar(0x28); // ( Show_BCD( RTC_BFU[RTCWEEK] ); // week putchar(0x29); // ) printf("\t"); // tab Show_BCD( RTC_BFU[RTCHOUR] ); // hour putchar(0x3a); // : Show_BCD( RTC_BFU[RTCMIN] ); // min putchar(0x3a); // : Show_BCD( RTC_BFU[RTCSEC] ); // sec printf("\n"); 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"); Show_BCD( 0x20 ); // year RTCADDR = RTCYEAR; Show_BCD( RTCDATA ); putchar(0x2f); // / Show_BCD(Read_RTC_SFR(RTCALMMONTH) & 0x1F); // month putchar(0x2f); // / ISSFA Ver.A 2010/06

13 Show_BCD(Read_RTC_SFR(RTCALMDAY) & 0x3F ); putchar(0x20); // day // SPACE putchar(0x28); // ( Show_BCD(Read_RTC_SFR(RTCALMWEEK) & 0x07 ); // week putchar(0x29); // ) printf("\t"); // tab Show_BCD(Read_RTC_SFR(RTCALMHOUR) & 0x3F ); // hour putchar(0x3a); // : Show_BCD(Read_RTC_SFR(RTCALMMIN) & 0x07 ); // min printf("\n"); void SET_Period(void) // char h_dat, l_dat; Show_RTC_Now_Time(); Show_RTC_ALARM_Set(); printf ("\t"); printf ("1. 01 sec \n"); printf ("\t"); printf ("2. 05 sec \n"); printf ("\t"); printf ("3. 10 sec \n"); printf ("\t"); printf ("4. 20 sec \n"); printf ("\t"); printf ("5. 30 sec \n"); printf ("\t"); printf ("6. 60 sec \n"); printf ("\t"); printf ("other. Exit!! \n"); printf ("\t"); printf ("Enter:"); CMD_002 = getchar(); switch (CMD_002) case 0x31: RTC_Period_target= 1;// 01 sec case 0x32: RTC_Period_target= 5;// 05 sec case 0x33: RTC_Period_target=10;// 10 sec case 0x34: RTC_Period_target=20;// 20 sec case 0x35: RTC_Period_target=30;// 30 sec case 0x36: RTC_Period_target=60;// 60 sec default: // end switch 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:"); ISSFA Ver.A 2010/06

14 CMD_002 = getchar(); RTCADDR = RTCCTRL; RTCDATA &= 0xF7; // PeriodIntEn=0 if(cmd_002==0x31) RTCDATA = 0x08; // 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; RTCDATA &= 0xDF; // ALARMIntEn=0 if(cmd_002==0x31) RTCDATA = 0x20; // ALARMIntEn=1 void SET_RTC_Time(void) char h_dat, l_dat; while(1) Show_RTC_Now_Time(); printf ("\t"); printf ("<Which one is your choice?>\n"); printf ("\t"); printf ("1. Year \n"); printf ("\t"); printf ("2. Month \n"); printf ("\t"); printf ("3. Day \n"); printf ("\t"); printf ("4. Week \n"); printf ("\t"); printf ("5. Hour \n"); printf ("\t"); printf ("6. Minute \n"); printf ("\t"); printf ("7. Second \n"); printf ("\t"); printf ("other. Exit!!\n"); printf ("\t"); printf ("Enter:"); CMD_002 = getchar(); if(cmd_002<0x31 CMD_002>0x37) switch (CMD_002) case 0x31: printf ("\tyear:"); Write_RTC_SFR(RTCYEAR, (h_dat<<4) l_dat ); case 0x32: printf ("\tmonth:"); Write_RTC_SFR(RTCMONTH, (h_dat<<4) l_dat ); case 0x33: printf ("\tday:\n"); ISSFA Ver.A 2010/06

15 Write_RTC_SFR(RTCDAY, (h_dat<<4) l_dat ); case 0x34: printf ("\tweek:"); Write_RTC_SFR(RTCWEEK, (getchar()-0x30) 0x80); case 0x35: printf ("\thour:"); Write_RTC_SFR(RTCHOUR, (h_dat<<4) l_dat 0x80); case 0x36: printf ("\tminute:"); Write_RTC_SFR(RTCMIN, (h_dat<<4) l_dat 0x80); case 0x37: printf ("\tsecond:"); Write_RTC_SFR(RTCSEC, (h_dat<<4) l_dat 0x80); default: // 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 ("<Which one is your choice?>\n"); printf ("\t"); printf ("1. Month \n"); printf ("\t"); printf ("2. Day \n"); printf ("\t"); printf ("3. Week \n"); printf ("\t"); printf ("4. Hour \n"); printf ("\t"); printf ("5. Minute \n"); printf ("\t"); printf ("Other. Exit!!\n"); printf ("\t"); printf ("Enter:"); CMD_002 = getchar(); if(cmd_002<0x31 CMD_002>0x35) switch (CMD_002) ISSFA Ver.A 2010/06

16 case 0x31: printf ("\tmonth:"); Write_RTC_SFR(RTCALMMONTH, (h_dat<<4) l_dat 0x80); case 0x32: printf ("\tday:"); Write_RTC_SFR(RTCALMDAY, (h_dat<<4) l_dat 0x80); case 0x33: printf ("\tweek:"); Write_RTC_SFR(RTCALMWEEK, (getchar()-0x30) 0x80); case 0x34: printf ("\thour:"); Write_RTC_SFR(RTCALMHOUR, (h_dat<<4) l_dat 0x80); case 0x35: printf ("\tminute:"); Write_RTC_SFR(RTCALMMIN, (h_dat<<4) l_dat 0x80); default: // end switch // end while(1) void Init_UART(void) SCON = 0x50; //SCON: serail mode 1, 8-bit UART, enable receive TMOD = 0x20; /* TMOD: timer 1, mode 2, 8-bit reload */ PCON = 0x80; //SMOD = 1; // TH1 = 0xD0; //Baud:2400 fosc= mhz OK! // TH1 = 0xFE; //Baud:57600 fosc= mhz OK! TH1 = 0xFF; //Baud: fosc= mhz OK! // TH1 = 0xFF; //Baud:57600 fosc= mhz OK! TCON= 0x40; //timer 1 run TI = 1; /*TI: set TI to send first char of UART for Printf("")*/ // EA = 1; //all interrupt enable // ES = 1; //UART enable void Init_RTC(void) ISSFA Ver.A 2010/06

17 IEN2 = 0x02; // Enable RTC_INT. // IEN2 &= 0xFD; // Disable RTC_INT. EA = 1; // All interrupt enable // RTCADDR = RTCCTRL; // RTCDATA = 0x81; // RTCen=1, ALARMInten=0, PeriodIntEn=0, Period= 1 sec Write_RTC_SFR(RTCCTRL, RTCen RTC_one_sec ); Write_RTC_SFR( RTCYEAR, (0x10)); Write_RTC_SFR( RTCMONTH, (0x05)); Write_RTC_SFR( RTCDAY, (0x01)); Write_RTC_SFR( RTCWEEK, (0x06)); Write_RTC_SFR( RTCALMMONTH, (0x05)); Write_RTC_SFR( RTCALMDAY, (0x01)); Write_RTC_SFR( RTCALMWEEK, (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); printf("\n"); putchar(0x32); printf("\n"); putchar(0x33); printf("\n"); Init_RTC(); Show_RTC_Now_Time(); Show_RTC_ALARM_Set(); while(1) ISSFA Ver.A 2010/06

18 Show_Manual(); CMD_001 = getchar(); printf ("\n\n"); Pause_RTC_INT(); switch (CMD_001) case 0x31: Show_RTC_Now_Time(); case 0x32: SET_RTC_Time(); case 0x33: SET_Period(); case 0x34: ON_OFF_Period(); case 0x35: SET_ALARM(); case 0x36: ON_OFF_ALARM(); default: Reset_MCU(); //end switch //printf("\n"); CMD_001=0; Gono_RTC_INT(); ISSFA Ver.A 2010/06