RTC8564.cpp

00001 #include "mbed.h"
00002 #include "RTC8564.h"
00003 
00004 void RTC8564::write(char address, char value)
00005 {
00006     i2c.start();
00007     i2c.write(RTC8564NB_ADR);
00008     i2c.write(address);
00009     i2c.write(value);
00010     i2c.stop();
00011 }
00012 
00013 char RTC8564::read(char address)
00014 {
00015     char value;
00016     i2c.start();
00017     i2c.write(RTC8564NB_ADR);
00018     i2c.write(address);
00019     i2c.start();
00020     i2c.write(RTC8564NB_ADR | _READ);
00021     value = i2c.read(0);
00022     i2c.stop();
00023     
00024     return value;
00025 }
00026 
00027 void RTC8564::time_just()
00028 {
00029     char _min, _hour;
00030     _min = read(MINUTES);
00031     if (_min >= 0x30) { 
00032             _hour = read(HOURS);
00033             if (_hour == 0x23)
00034                 _hour = 0x00;
00035             else if ((_hour & 0x0F) == 0x09)
00036                 _hour = (_hour & 0xF0) + 0x10;
00037             else
00038                 _hour = _hour + 0x01;
00039             write(HOURS, _hour);
00040     }
00041     write(MINUTES, 0x00);
00042     write(SECONDS, 0x00);
00043 }
00044 
00045 
00046 void RTC8564::setdaytime(char y[3], char m[3], char d[3], char h[3], char min[3], char s[3], char week_val[2])
00047 {
00048     write(CONTROL1, 0x20); //stop
00049     write(CONTROL2, 0x00);
00050     write(YEARS, ((y[0]-0x30)<<4)+(y[1]-0x30)); 
00051     write(MONTHS, ((m[0]-0x30)<<4)+(m[1]-0x30));
00052     write(DAYS, ((d[0]-0x30)<<4)+(d[1]-0x30));
00053     write(HOURS, ((h[0]-0x30)<<4)+(h[1]-0x30));
00054     write(MINUTES, ((min[0]-0x30)<<4)+(min[1]-0x30));
00055     write(SECONDS, ((s[0]-0x30)<<4)+(s[1]-0x30));
00056     write(WEEKDAYS, week_val[0] - 0x30); //Sunday = "0", Monday = "1" ...
00057     write(CLOCKOUT_FREQ, 0x00); // 0x83 = TE on & 1Hz
00058     write(TIMER_CONTROL, 0x00);
00059     write(CONTROL1, 0x00); //start
00060     return;
00061 }