main.cpp

00001 /* RTC8563 Real Time Clock
00002  * creator: Matthias Hemmer
00003  * date: 16.01.2017
00004  * handover date: 30.01.2017
00005  *
00006  * |-------------------------|
00007  * |!!the RTC must be reseted|
00008  * |-------------------------|
00009  *
00010  */
00011 //include mbed library
00012 #include "mbed.h"
00013 //include i2c class
00014 #include "myi2c.h"
00015 //include string library from C++ string library
00016 #include <string>
00017 //include the addresses for the PCF8563
00018 #include "PCF8563_addr.h"
00019 using namespace std;
00020 
00021 PCF8563 pcf8563(p28, p27);    //SDA,SCL
00022 Serial pc(USBTX,USBRX); //RS232 connection
00023 
00024 void send();    //read parameters and write it via serial to pc
00025 void send_hh_mm_ss();   //send only the time in format: hh:mm:ss
00026 void send_date();   //send only the date in format: dd:month:yyyy
00027 void set_date(int year, int month, int day, int hour, int minute, int second);  //set day class
00028 void toggle();      //toogle the bool between ture and false
00029 string ConvertToDate(uint8_t value); //convert from hex to string
00030 
00031 //global parameters
00032 bool check = false; //toogle variable
00033 uint8_t second, minute, hour, day, week, month, year;       // uint8_t is a 8 bit integer
00034 string century_month(" ");  //initialzied
00035 char c; //char from the pc keyboard entry
00036 
00037 //interrupt for the serial port
00038 void callback()
00039 {
00040     c = pc.getc();  //save the Character which was send from the pc
00041 
00042     switch(c) {
00043         case 'C':
00044             toggle();
00045             break;
00046         case 'c':
00047             toggle();
00048             break;
00049         case 't':
00050             send_hh_mm_ss();
00051             break;
00052         case 'T':
00053             send_hh_mm_ss();
00054             break;
00055         case 'd':
00056             send_date();
00057             break;
00058         case 'D':
00059             send_date();
00060             break;
00061     }
00062 }
00063 /*
00064  * the programm have to set the date and read it in a second clock about the serial port to the pc
00065  * if "C" or "c" are pressed the date will send to the pc and if it will be presss a second time it will stop
00066  * before you can send another option you HAVE TO stop with a 'C' or 'c'
00067  * if "T" or "t" are pressed than it send the current time from the rtc to the pc in format: hh:mm:ss
00068  * if "D" od "d" are pressed than it send the date from the rtc to the pc in format: dd.month.yyyy
00069  */
00070 int main()
00071 {
00072     pc.attach(&callback);   //if any key will be pressed on the keyboard from the pc it will call an interrupt
00073 
00074     pc.baud(9600);      //set the rate of the serial port to 9600; default: 9600
00075 
00076     //set at first the date
00077     set_date(0x99, 0x01, 0x02, 0x04, 0x05, 0x00);
00078 
00079     //shows up the menu
00080     pc.printf( "C/c: Gibt das Datum in sekunden dakt aus.\n\r"
00081                "T/t: Gibt die aktuelle Zeit der Echtzeituhr aus.\n\r"
00082                "D/d: Gibt das aktuelle Datum der Echtzeituhr aus.\n\r");
00083 
00084     while(1) {
00085         switch(c) {
00086             case 'C':
00087                 send();
00088                 break;
00089             case 'c':
00090                 send();
00091                 break;
00092         }
00093     }
00094 }//end main
00095 /*
00096  * set function, the first address is the register, the second is the argument
00097  * example: set(register, 0x01); set the reigster to one
00098  *
00099  * 1. set the STOP bit 1 (look shema datasheet) at the reigster CONTROL1
00100  * 2. set the time
00101  * 3. set the STOP bit 0 (look shema datasheet) at the register CONTROL1
00102  */
00103 void set_date(int year, int month, int day, int hour, int minute, int second)
00104 {
00105     uint8_t week_val = 0x05;    //SAT
00106     //set the STOP bit
00107     pcf8563.write(PCF8563_ADR_WR, CONTROL1, 0x20);  //set CONTROL1 STOP bit = 1 0b00100000
00108     pcf8563.write(PCF8563_ADR_WR, CONTROL2, 0x00);  //set CONTROL2 0b00000000
00109     //set date
00110     pcf8563.write(PCF8563_ADR_WR, YEARS, year);
00111     pcf8563.write(PCF8563_ADR_WR, MONTHS, month);
00112     pcf8563.write(PCF8563_ADR_WR, WEEKDAYS, week_val);
00113     pcf8563.write(PCF8563_ADR_WR, DAYS, day);
00114     pcf8563.write(PCF8563_ADR_WR, HOURS, hour);
00115     pcf8563.write(PCF8563_ADR_WR, MINUTES, minute);
00116     pcf8563.write(PCF8563_ADR_WR, SECONDS, second);
00117     //releas the STOP bit
00118     //CLOCKOUT_FREQ must set to 0, see shema datasheet
00119     pcf8563.write(PCF8563_ADR_WR, CLOCKOUT_FREQ, 0x00); //0x83 = TE on & 1Hz
00120     pcf8563.write(PCF8563_ADR_WR, TIMER_CINTROL, 0x00); // see datasheet
00121     pcf8563.write(PCF8563_ADR_WR, CONTROL1, 0x00); //set CONTROL1 STOP bit = 0 0b00000000
00122 }// end set
00123 
00124 //invert the bool check
00125 void toggle()
00126 {
00127     check = !check;
00128 }//end toggle
00129 void send()
00130 {
00131     while(check == true) {
00132         //read all parameters and connect the read value with a '&' with a register entry to 1: 0b11111111
00133         second = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, SECONDS) &0x7F;
00134         minute = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, MINUTES) &0x7F;
00135         hour = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, HOURS) &0x3F;
00136         day = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, DAYS) & 0x3F;
00137         week = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, WEEKDAYS) &0x07;   //must not be used
00138         month = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, MONTHS) &0x1F;
00139         year = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, YEARS) &0xFF;
00140 
00141         century_month = ConvertToDate(month);   //convert from hex into a string
00142 
00143         /*serial export to pc
00144          *%d02 shows: 00
00145          *19%02 must be writen, becouse the register of the year goes only until 99
00146          */
00147         pc.printf("%d.%s.19%d\n\r%02d:%02d:%02d\n\r", pcf8563.bcdToDec(day), century_month, pcf8563.bcdToDec(year), pcf8563.bcdToDec(hour), pcf8563.bcdToDec(minute), pcf8563.bcdToDec(second)); //ignore warning, becouse it cames from the string library      //Warning message: Warning: Non-POD class type passed through ellipsis in "main.cpp" dont' care
00148 
00149         wait(1);    //to send only one value
00150     }
00151 }//end send
00152 void send_hh_mm_ss()
00153 {
00154     //read second, minute and hour from the rtc
00155     second = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, SECONDS) &0x7F;
00156     minute = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, MINUTES) &0x7F;
00157     hour = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, HOURS) &0x3F;
00158 
00159     pc.printf("Aktuelle Zeit: %02d:%02d:%02d\n\r", pcf8563.bcdToDec(hour), pcf8563.bcdToDec(minute), pcf8563.bcdToDec(second));
00160     wait(1);    //to send only one value
00161 }//end send_hh_mm_ss
00162 void send_date()
00163 {
00164     day = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, DAYS) & 0x3F;
00165     month = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, MONTHS) &0x1F;
00166     year = pcf8563.read(PCF8563_ADR_WR, PCF8563_ADR_RD, YEARS) &0xFF;
00167 
00168     century_month = ConvertToDate(month);   //convert from hex into a string
00169 
00170     pc.printf("Ich wurde geboren am %02d.%s.19%d.\n\r", pcf8563.bcdToDec(day), century_month, pcf8563.bcdToDec(year));      //ignore warning, becouse it cames from the string library
00171     wait(1);    //to send only one value
00172 }//end send_date
00173 /*
00174  * have to be coded from the user
00175  * month are coded in hex
00176  * return the month in a string (string library used)
00177  */
00178 string ConvertToDate(uint8_t value)
00179 {
00180     string month(" ");      // initialized
00181     if(value == 0x01)   //compare value with a hex coded number until 0x12 is reached (see datashet)
00182         month = "January";      //set the montch
00183     if(value == 0x02)
00184         month = "February";
00185     if(value == 0x03)
00186         month = "March";
00187     if(value == 0x04)
00188         month = "April";
00189     if(value == 0x05)
00190         month = "May";
00191     if(value == 0x06)
00192         month = "June";
00193     if(value == 0x07)
00194         month = "July";
00195     if(value == 0x08)
00196         month = "August";
00197     if(value == 0x09)
00198         month = "September";
00199     if(value == 0x10)
00200         month = "October";
00201     if(value == 0x11)
00202         month ="November";
00203     if(value == 0x12)
00204         month = "December";
00205 
00206     return month;
00207 }//end ConvertToDate