RTC.zip_DGV_PCF8563-RTC时钟访问程序

/*---------------------------------------------------------------------*/ /* --- STC MCU International Limited ----------------------------------*/ /* --- STC 1T Series MCU Demo Programme -------------------------------*/ /* --- Mobile: (86)13922805190 ----------------------------------------*/ /* --- Fax: 86-0513-55012956,55012947,55012969 ------------------------*/ /* --- Tel: 86-0513-55012928,55012929,55012966 ------------------------*/ /* --- Web: www.GXWMCU.com --------------------------------------------*/ /* --- QQ: 800003751 -------------------------------------------------*/ /* 如果要在程序中使用此代码,请在程序中注明使用了宏晶科技的资料及程序 */ /*---------------------------------------------------------------------*/ /************* 本程序功能说明 ************** 读写RTC, IC为PCF8563. 用STC的MCU的IO方式控制74HC595驱动8位数码管。 用户可以修改宏来选择时钟频率. 使用Timer0的16位自动重装来产生1ms节拍,程序运行于这个节拍下, 用户修改MCU主时钟频率时,自动定时于1ms. 用户可以在显示函数里修改成共阴或共阳.推荐尽量使用共阴数码管. 8位数码管显示时间(小时-分钟-秒). 行列扫描按键键码为17~32. 按键只支持单键按下, 不支持多键同时按下, 那样将会有不可预知的结果. 键按下超过1秒后,将以10键/秒的速度提供重键输出. 用户只需要检测KeyCode是否非0来判断键是否按下. 调整时间键: 键码17: 小时+. 键码18: 小时-. 键码19: 分钟+. 键码20: 分钟-. ******************************************/ #define MAIN_Fosc 22118400L //定义主时钟 #include "STC15Fxxxx.H" /***********************************************************/ #define DIS_DOT 0x20 #define DIS_BLACK 0x10 #define DIS_ 0x11 /****************************** 用户定义宏 ***********************************/ #define Timer0_Reload (65536UL -(MAIN_Fosc / 1000)) //Timer 0 中断频率, 1000次/秒 /*****************************************************************************/ /************* 本地常量声明 **************/ u8 code t_display[]={ //标准字库 // 0 1 2 3 4 5 6 7 8 9 A B C D E F 0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71, //black - H J K L N o P U t G Q r M y 0x00,0x40,0x76,0x1E,0x70,0x38,0x37,0x5C,0x73,0x3E,0x78,0x3d,0x67,0x50,0x37,0x6e, 0xBF,0x86,0xDB,0xCF,0xE6,0xED,0xFD,0x87,0xFF,0xEF,0x46}; //0. 1. 2. 3. 4. 5. 6. 7. 8. 9. -1 u8 code T_COM[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; //位码 /************* IO口定义 **************/ sbit P_HC595_SER = P4^0; //pin 14 SER data input sbit P_HC595_RCLK = P5^4; //pin 12 RCLk store (latch) clock sbit P_HC595_SRCLK = P4^3; //pin 11 SRCLK Shift data clock /************* 本地变量声明 **************/ u8 LED8[8]; //显示缓冲 u8 display_index; //显示位索引 bit B_1ms; //1ms标志 u8 IO_KeyState, IO_KeyState1, IO_KeyHoldCnt; //行列键盘变量 u8 KeyHoldCnt; //键按下计时 u8 KeyCode; //给用户使用的键码, 1~16有效 u8 cnt50ms; u8 hour,minute,second; //RTC变量 u16 msecond; /************* 本地函数声明 **************/ void CalculateAdcKey(u16 adc); void IO_KeyScan(void); //50ms call void WriteNbyte(u8 addr, u8 *p, u8 number); void ReadNbyte( u8 addr, u8 *p, u8 number); void DisplayRTC(void); void ReadRTC(void); void WriteRTC(void); /**************** 外部函数声明和外部变量声明 *****************/ /**********************************************/ void main(void) { u8 i; P0M1 = 0; P0M0 = 0; //设置为准双向口 P1M1 = 0; P1M0 = 0; //设置为准双向口 P2M1 = 0; P2M0 = 0; //设置为准双向口 P3M1 = 0; P3M0 = 0; //设置为准双向口 P4M1 = 0; P4M0 = 0; //设置为准双向口 P5M1 = 0; P5M0 = 0; //设置为准双向口 P6M1 = 0; P6M0 = 0; //设置为准双向口 P7M1 = 0; P7M0 = 0; //设置为准双向口 display_index = 0; AUXR = 0x80; //Timer0 set as 1T, 16 bits timer auto-reload, TH0 = (u8)(Timer0_Reload / 256); TL0 = (u8)(Timer0_Reload % 256); ET0 = 1; //Timer0 interrupt enable TR0 = 1; //Tiner0 run EA = 1; //打开总中断 for(i=0; i<8; i++) LED8[i] = 0x10; //上电消隐 ReadRTC(); F0 = 0; if(second >= 60) F0 = 1; //错误 if(minute >= 60) F0 = 1; //错误 if(hour >= 24) F0 = 1; //错误 if(F0) //有错误, 默认12:00:00 { second = 0; minute = 0; hour = 12; WriteRTC(); } DisplayRTC(); LED8[2] = DIS_; LED8[5] = DIS_; KeyHoldCnt = 0; //键按下计时 KeyCode = 0; //给用户使用的键码, 1~16有效 IO_KeyState = 0; IO_KeyState1 = 0; IO_KeyHoldCnt = 0; cnt50ms = 0; while(1) { if(B_1ms) //1ms到 { B_1ms = 0; if(++msecond >= 1000) //1秒到 { msecond = 0; ReadRTC(); DisplayRTC(); } if(++cnt50ms >= 50) //50ms扫描一次行列键盘 { cnt50ms = 0; IO_KeyScan(); } if(KeyCode != 0) //有键按下 { if(KeyCode == 17) //hour +1 { if(++hour >= 24) hour = 0; WriteRTC(); DisplayRTC(); } if(KeyCode == 18) //hour -1 { if(--hour >= 24) hour = 23; WriteRTC(); DisplayRTC(); } if(KeyCode == 19) //minute +1 { second = 0; if(++minute >= 60) minute = 0; WriteRTC(); DisplayRTC(); } if(KeyCode == 20) //minute -1 { second = 0; if(--minute >= 60) minute = 59; WriteRTC(); DisplayRTC(); } KeyCode = 0; } } } } /**********************************************/ /********************** 显示时钟函数 ************************/ void DisplayRTC(void) { if(hour >= 10) LED8[0] = hour / 10; else LED8[0] = DIS_BLACK; LED8[1] = hour % 10; LED8[2] = DIS_; LED8[3] = minute / 10; LED8[4] = minute % 10; LED8[6] = second / 10; LED8[7] = second % 10; } /********************** 读RTC函数 ************************/ void ReadRTC(void) { u8 tmp[3]; ReadNbyte(2, tmp, 3); second = ((tmp[0] >> 4) & 0x07) * 10 + (tmp[0] & 0x0f); minute = ((tmp[1] >> 4) & 0x07) * 10 + (tmp[1] & 0x0f); hour = ((tmp[2] >> 4) & 0x03) * 10 + (tmp[2] & 0x0f); } /********************** 写RTC函数 ************************/ void WriteRTC(void) { u8 tmp[3]; tmp[0] = ((second / 10) << 4) + (second % 10); tmp[1] = ((minute / 10) << 4) + (minute % 10); tmp[2] = ((hour / 10) << 4) + (hour % 10); WriteNbyte(2, tmp, 3); } /***************************************************** 行列键扫描程序 使用XY查找4x4键的方法，只能单键，速度快 Y P04 P05 P06 P07 | | | | X | | | | P00 ---- K00 ---- K01 ---- K02 ---- K03 ---- | | | | P01 ---- K04 ---- K05 ---- K06 ---- K07 ---- | | | | P02 ---- K08 ---- K09 ---- K10 ---- K11 ---- | | | | P03 ---- K12 ---- K13 ---- K14 ---- K15 ---- | | | | ******************************************************/ u8 code T_KeyTable[16] = {0,1,2,0,3,0,0,0,4,0,0,0,0,0,0,0}; void IO_KeyDelay(void) { u8 i; i = 60; while(--i) ; } void IO_KeyScan(void) //50ms call { u8 j; j = IO_KeyState1; //保存上一次状态 P0 = 0xf0; //X低，读Y IO_KeyDelay(); IO_KeyState1 = P0 & 0xf0; P0 = 0x0f; //Y低，读X IO_KeyDelay(); IO_KeyState1 |= (P0 & 0x0f); IO_KeyState1 ^= 0xff; //取反 if(j == IO_KeyState1) //连续两次读相等 { j = IO_KeyState; IO_KeyState = IO_KeyState1; if(IO_KeyState != 0) //有键按下 { F0 = 0; if(j == 0) F0 = 1; //第一次按下 else if(j == IO_KeyState) { if(++IO_KeyHoldCnt >= 20) //1秒后重键 { IO_KeyHoldCnt = 18; F0 = 1; } } if(F0) { j = T_KeyTable[IO_KeyState >> 4]; if((j != 0) && (T_KeyTable[IO_KeyState& 0x0f] != 0)) KeyCode = (j - 1) * 4 + T_KeyTable[IO_KeyState & 0x0f] + 16; //计算键码，17~32 } } else IO_KeyHoldCnt = 0; } P0 = 0xff; } /**************** 向HC595发送一个字节函数 ******************/ void Send_