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#include <reg51.h> #include <intrins.h> #define noACK 0 #define ACK 1 //adr command r/w #define STATUS_REG_W 0x06 //000 0011 0 #define STATUS_REG_R 0x07 //000 0011 1 #define MEASURE_TEMP 0x03 //000 0001 1 #define MEASURE_HUMI 0x05 //000 0010 1 #define RESET 0x1e //000 1111 0 #define Lcd_Data P0 //定义LCD数据端口 sbit RS = P2^ 5; //定义和LCM的连接端口 sbit RW = P2 ^ 6; sbit E = P2 ^ 7; sbit DATA = P3^7; sbit SCK = P3^5; sbit io_dat = P1^1 ; //定义DS1302数据端口 sbit rst = P1^2 ; sbit sclk = P1^0 ; sbit RE = P3^4 ; //继电器端口 sbit BELL = P2^4 ; //蜂鸣器端口 sbit k1 = P2^0 ; //按键端口 sbit k2 = P2^1 ; sbit k3 = P2^2 ; sbit k4 = P2^3 ; enum {TEMP,HUMI}; unsigned char code str[] = " Sensors error !" ; unsigned char code menum[] = "T: RH: %" ; unsigned char code set_arm[] = " SET Alarm Range" ; unsigned char code set_ftime[] = "SET Funtain Time" ; unsigned char code temper_arm[] = "Temperature High" ; unsigned char code humidy_arm[] = " Humidity lower " ; unsigned char code fountain[] = " Fountain Time " ; unsigned char p_value[2], p_checksum ; unsigned int t_value ,rh_value; unsigned long record_tp ,record_rhp ; unsigned char I= 0x00 ,J=0x00; unsigned int tem_true ; unsigned long rh_true; unsigned char arm_t = 28,arm_rh = 80 ; unsigned char set_hour=0x14,set_min=0x57 ,keeptime=0x10,keeptime1; unsigned char set_ty=0; unsigned char time_data[3]; unsigned char bdata time ; sbit timehf =time^7 ; bit alarm_flag = 0 ; void Delay(unsigned int ms) { unsigned char i ; while(ms--) for(i=0;i<125;i++); } char s_write_byte(unsigned char value) //---------------------------------------------------------------------------------- // writes a byte on the Sensibus and checks the acknowledge { unsigned char i,error=0; for (i=0x80;i>0;i/=2) //shift bit for masking { if (i & value) DATA=1; //masking value with i , write to SENSI-BUS else DATA=0; SCK=1; //clk for SENSI-BUS _nop_();_nop_();_nop_(); //pulswith approx. 5 us SCK=0; } DATA=1; //release DATA-line SCK=1; //clk #9 for ack error=DATA; //check ack (DATA will be pulled down by SHT11) SCK=0; return error; //error=1 in case of no acknowledge } //---------------------------------------------------------------------------------- char s_read_byte(unsigned char ack) //---------------------------------------------------------------------------------- // reads a byte form the Sensibus and gives an acknowledge in case of "ack=1" { unsigned char i,val=0; DATA=1; //release DATA-line for (i=0x80;i>0;i/=2) //shift bit for masking { SCK=1; //clk for SENSI-BUS if (DATA) val=(val | i); //read bit SCK=0; } DATA=!ack; //in case of "ack==1" pull down DATA-Line SCK=1; //clk #9 for ack _nop_();_nop_();_nop_(); //pulswith approx. 5 us SCK=0; DATA=1; //release DATA-line return val; } //---------------------------------------------------------------------------------- void s_transstart(void) //---------------------------------------------------------------------------------- // generates a transmission start // _____ ________ // DATA: |_______| // ___ ___ // SCK : ___| |___| |______ { DATA=1; SCK=0; //Initial state _nop_(); SCK=1; _nop_(); DATA=0; _nop_(); SCK=0; _nop_();_nop_();_nop_(); SCK=1; _nop_(); DATA=1; _nop_(); SCK=0; } //---------------------------------------------------------------------------------- void s_connectionreset(void) //---------------------------------------------------------------------------------- // communication reset: DATA-line=1 and at least 9 SCK cycles followed by transstart // _____________________________________________________ ________ // DATA: |_______| // _ _ _ _ _ _ _ _ _ ___ ___ // SCK : __| |__| |__| |__| |__| |__| |__| |__| |__| |______| |___| |______ { unsigned char i; DATA=1; SCK=0; //Initial state for(i=0;i<9;i++) //9 SCK cycles { SCK=1; SCK=0; } s_transstart(); //transmission start } //---------------------------------------------------------------------------------- char s_softreset(void) //---------------------------------------------------------------------------------- // resets the sensor by a softreset { unsigned char error=0; s_connectionreset(); //reset communication error+=s_write_byte(RESET); //send RESET-command to sensor return error; //error=1 in case of no response form the sensor } char s_measure(unsigned char mode) //---------------------------------------------------------------------------------- // makes a measurement (humidity/temperature) with checksum { unsigned error=0; unsigned int i; s_transstart(); //transmission start switch(mode){ //send command to sensor case TEMP : error+=s_write_byte(MEASURE_TEMP); break; case HUMI : error+=s_write_byte(MEASURE_HUMI); break; default : break; } for (i=0;i<65535;i++) if(DATA==0) break; //wait until sensor has finished the measurement if(DATA) error+=1; // or timeout (~2 sec.) is reached *(p_value) =s_read_byte(ACK); //read the first byte (MSB) *(p_value+1) =s_read_byte(ACK); //read the second byte (LSB) p_checksum =s_read_byte(noACK); //read checksum return error; } void Write_Comm(unsigned char lcdcomm) //写指令函数 { Lcd_Data = lcdcomm; RS = 0; RW = 0; E = 0; E = 1; Delay(5) ; } /******************************************************************************/ void Write_Data(unsigned char lcddata)//写数据函数 { Lcd_Data = lcddata; RS = 1; RW = 0; E = 0; E = 1; Delay(5) ; } /******************************************************************************/ void Init_LCD(void)//初始化LCD { Delay(40); //稍微延时，等待LCM进入工作状态 Write_Comm(0x01);//清显示 // Write_Comm(0x02);//光标归位 Write_Comm(0x38);//8位2行5*8 Write_Comm(0x06);//文字不动，光标右移 Write_Comm(0x0c);//显示开/关，光标开闪烁开 // Write_Comm(0x18);//左移 } void ds1302_write(unsigned char wcom , unsigned char wdat) { unsigned char dat , wbyte8 = 8 , i = 2; sclk = 0; _nop_(); rst = 1; _nop_(); dat = wcom ; while(i--) { while(wbyte8--) { sclk = 0; _nop_(); io_dat = (bit)(dat & 0x01); dat>>=1; _nop_(); sclk = 1; _nop_(); _nop_(); } dat = wdat ; } rst = 0; } void ds1302_read(unsigned char add ) { unsigned char rbyte8 = 8; sclk = 0; _nop_(); rst = 1; _nop_(); while(rbyte8--) { sclk = 0; _nop_(); io_dat = (bit)(add & 0x01); add>>=1; _nop_(); sclk = 1; _nop_(); } io_dat = 1 ; _nop_(); rbyte8 = 8; while(rbyte8--) { sclk = 1; _nop_(); timehf = io_dat ; time >>=1 ; _nop_(); sclk = 0; _nop_(); } rst = 0; } void ds1302initial(void) //1302初始化，请在这里修改当前时间 { ds1302_write( 0x8e , 0x00 ); //1302控制，数据允许写入 ds1302_write( 0x90 , 0xa4 ); //对VCC1充电 ;