FRA221_2015 / Mbed 2 deprecated 1A_PROJECT_DIGITAL

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Dependencies:   mbed

Fork of 1A_PROJECT_DIGITAL by Jakkapan Keawsalak

DS1307.cpp@0:ede9cc7e508b, 2015-12-08 (annotated)

Committer:
gamezajad
Date:
Tue Dec 08 19:25:47 2015 +0000
Revision:
0:ede9cc7e508b
1A

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gamezajad 0:ede9cc7e508b 1
gamezajad 0:ede9cc7e508b 2 #define DS1307_ADDR 0xD0
gamezajad 0:ede9cc7e508b 3 #include "DS1307.h"
gamezajad 0:ede9cc7e508b 4
gamezajad 0:ede9cc7e508b 5 DS1307::DS1307(PinName sda,PinName scl):rtc(sda,scl),display(D7, D8){
gamezajad 0:ede9cc7e508b 6 col=1;
gamezajad 0:ede9cc7e508b 7 display.clear();
gamezajad 0:ede9cc7e508b 8 }
gamezajad 0:ede9cc7e508b 9 void DS1307::displays(){
gamezajad 0:ede9cc7e508b 10
gamezajad 0:ede9cc7e508b 11 if(col){display.setColon(1);col=0;}
gamezajad 0:ede9cc7e508b 12 else {display.setColon(0);col=1;}
gamezajad 0:ede9cc7e508b 13 int sec,mins,hour,day,date,month,year;
gamezajad 0:ede9cc7e508b 14
gamezajad 0:ede9cc7e508b 15 gettime(&sec,&mins,&hour,&day,&date,&month,&year);
gamezajad 0:ede9cc7e508b 16
gamezajad 0:ede9cc7e508b 17 display.write(0, hour / 10);
gamezajad 0:ede9cc7e508b 18 display.write(1, hour % 10);
gamezajad 0:ede9cc7e508b 19 display.write(2, mins / 10);
gamezajad 0:ede9cc7e508b 20 display.write(3, mins % 10);
gamezajad 0:ede9cc7e508b 21 wait(1);
gamezajad 0:ede9cc7e508b 22 }
gamezajad 0:ede9cc7e508b 23 void DS1307::settime(int sec,int mins,int hour,int day,int date,int month,int year){
gamezajad 0:ede9cc7e508b 24 char cmd[2];
gamezajad 0:ede9cc7e508b 25 cmd[0] = 0x00;
gamezajad 0:ede9cc7e508b 26 cmd[1] = dectobcd(sec);
gamezajad 0:ede9cc7e508b 27 rtc.write(DS1307_ADDR, cmd, 2);
gamezajad 0:ede9cc7e508b 28 cmd[0] = 0x01;
gamezajad 0:ede9cc7e508b 29 cmd[1] = dectobcd(mins);
gamezajad 0:ede9cc7e508b 30 rtc.write(DS1307_ADDR, cmd, 2);
gamezajad 0:ede9cc7e508b 31 cmd[0] = 0x02;
gamezajad 0:ede9cc7e508b 32 cmd[1] = dectobcd(hour);
gamezajad 0:ede9cc7e508b 33 rtc.write(DS1307_ADDR, cmd, 2);
gamezajad 0:ede9cc7e508b 34 cmd[0] = 0x03;
gamezajad 0:ede9cc7e508b 35 cmd[1] = dectobcd(day);
gamezajad 0:ede9cc7e508b 36 rtc.write(DS1307_ADDR, cmd, 2);
gamezajad 0:ede9cc7e508b 37 cmd[0] = 0x04;
gamezajad 0:ede9cc7e508b 38 cmd[1] = dectobcd(date);
gamezajad 0:ede9cc7e508b 39 rtc.write(DS1307_ADDR, cmd, 2);
gamezajad 0:ede9cc7e508b 40 cmd[0] = 0x05;
gamezajad 0:ede9cc7e508b 41 cmd[1] = dectobcd(month);
gamezajad 0:ede9cc7e508b 42 rtc.write(DS1307_ADDR, cmd, 2);
gamezajad 0:ede9cc7e508b 43 cmd[0] = 0x06;
gamezajad 0:ede9cc7e508b 44 cmd[1] = dectobcd(year);
gamezajad 0:ede9cc7e508b 45 rtc.write(DS1307_ADDR, cmd, 2);
gamezajad 0:ede9cc7e508b 46 }
gamezajad 0:ede9cc7e508b 47 void DS1307::gettime(int *sec,int *mins,int *hour,int *day,int *date,int *month,int *year){
gamezajad 0:ede9cc7e508b 48 char cmd = 0;
gamezajad 0:ede9cc7e508b 49 char v[7];
gamezajad 0:ede9cc7e508b 50 for(int x=0;x<=6;x++){
gamezajad 0:ede9cc7e508b 51 rtc.write(DS1307_ADDR, &cmd, 1);
gamezajad 0:ede9cc7e508b 52 rtc.read(DS1307_ADDR, &v[x], 1);
gamezajad 0:ede9cc7e508b 53 cmd++;
gamezajad 0:ede9cc7e508b 54 }
gamezajad 0:ede9cc7e508b 55 *sec=bcdtodec(v[0]);
gamezajad 0:ede9cc7e508b 56 *mins=bcdtodec(v[1]);
gamezajad 0:ede9cc7e508b 57 *hour=bcdtodec(v[2]);
gamezajad 0:ede9cc7e508b 58 *day=bcdtodec(v[3]);
gamezajad 0:ede9cc7e508b 59 *date=bcdtodec(v[4]);
gamezajad 0:ede9cc7e508b 60 *month=bcdtodec(v[5]);
gamezajad 0:ede9cc7e508b 61 *year=bcdtodec(v[6]);
gamezajad 0:ede9cc7e508b 62 }
gamezajad 0:ede9cc7e508b 63 int DS1307::bcdtodec( int bcd) {
gamezajad 0:ede9cc7e508b 64 int low = 0;
gamezajad 0:ede9cc7e508b 65 int high = 0;
gamezajad 0:ede9cc7e508b 66
gamezajad 0:ede9cc7e508b 67 high = bcd / 16;
gamezajad 0:ede9cc7e508b 68 low = bcd - (high * 16);
gamezajad 0:ede9cc7e508b 69 return ((high * 10) + low);
gamezajad 0:ede9cc7e508b 70 }
gamezajad 0:ede9cc7e508b 71 int DS1307::dectobcd( int dec) {
gamezajad 0:ede9cc7e508b 72 int low = 0;
gamezajad 0:ede9cc7e508b 73 int high = 0;
gamezajad 0:ede9cc7e508b 74
gamezajad 0:ede9cc7e508b 75 high = dec / 10; // this gives the high nibble value
gamezajad 0:ede9cc7e508b 76 low = dec - (high * 10); // this gives the lower nibble value
gamezajad 0:ede9cc7e508b 77 return ((high *16) + low); // this is the final bcd value but in interger format
gamezajad 0:ede9cc7e508b 78 }