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91 lines
2.1 KiB
C++
Executable File
91 lines
2.1 KiB
C++
Executable File
/*
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Implements a simple interface to the time function of the PCF8583 RTC chip
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Works around the device's limited year storage by keeping the year in the
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first two bytes of user accessible storage
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Assumes device is attached in the standard location - Analog pins 4 and 5
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Device address is the 8 bit address (as in the device datasheet - normally A0)
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Copyright (c) 2009, Erik DeBill
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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Usage:
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PCF8583 pcf(0xA0);
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pcf.get_time();
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Serial.print("year: ");
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Serial.println(pcf.year);
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pcf.hour = 14;
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pcf.minute = 30
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pcf.second = 0
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pcf.year = 2009
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pcf.month = 9
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pcf.day = 12
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pcf.set_time();
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*/
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#ifndef PCF8583_H
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#define PCF8583_H
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#include <Arduino.h>
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#include <Wire.h>
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class PCF8583 {
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int address;
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int dow;
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public:
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int second;
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int minute;
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int hour;
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int day;
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int month;
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int year;
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int year_base;
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int alarm_milisec;
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int alarm_second;
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int alarm_minute;
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int alarm_hour;
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int alarm_day;
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PCF8583(int device_address);
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void init ();
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void get_time();
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void set_time();
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void get_alarm();
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int get_day_of_week() const {
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return dow;
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}
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void set_daily_alarm();
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int bcd_to_byte(byte bcd);
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byte int_to_bcd(int in);
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};
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#endif //PCF8583_H
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