Diff: RTC/ds3231m.cpp

Revision:

6:0221618e6c4d

Parent:

5:5c073029c416

Child:

7:86bd2a00bd95

--- a/RTC/ds3231m.cpp	Wed Feb 11 03:08:57 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,225 +0,0 @@
-/*
- * VFD Modular Clock - mbed
- * (C) 2011-14 Akafugu Corporation
- *
- * This program is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at your option) any later
- * version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
- * PARTICULAR PURPOSE.  See the GNU General Public License for more details.
- *
- */
-
-#include "global.h"
-#include "ds3231m.h"
-
-#define DS3231M_SLAVE_ADDR 0xD0
-
-DS3231M::DS3231M(I2C& i2c)
- : RTC()
- , m_i2c(i2c)
-{
-    m_i2c.frequency(100000);    
-}
-
-void DS3231M::begin()
-{
-}
-
-time_t DS3231M::time()
-{
-    return m_time;
-}
-
-struct tm* DS3231M::getTime()
-{
-    char rtc[7];
-    
-    rtc[0] = 0; // second register, 0
-    int w = m_i2c.write(DS3231M_SLAVE_ADDR, rtc, 1);
-    int r = m_i2c.read(DS3231M_SLAVE_ADDR, rtc, 7);
-    
-    // Clear clock halt bit from read data
-    //rtc[0] &= ~(_BV(CH_BIT));
-    
-    m_tm.tm_sec  = bcd2dec(rtc[0]);
-    m_tm.tm_min  = bcd2dec(rtc[1]);
-    m_tm.tm_hour = bcd2dec(rtc[2]);
-    m_tm.tm_wday = bcd2dec(rtc[3])-1;
-    m_tm.tm_mday = bcd2dec(rtc[4]);
-    m_tm.tm_mon  = bcd2dec(rtc[5])-1; // tm_mon is 0-11
-    m_tm.tm_year = bcd2dec(rtc[6]);
-    
-    return &m_tm;    
-}
-
-void DS3231M::getTime(uint8_t* hour, uint8_t* min, uint8_t* sec)
-{
-    char rtc[3];
-    
-    rtc[0] = 0; // second register, 0
-    int w = m_i2c.write(DS3231M_SLAVE_ADDR, rtc, 1);
-    int r = m_i2c.read(DS3231M_SLAVE_ADDR, rtc, 3);
-    
-    // Clear clock halt bit from read data
-    //rtc[0] &= ~(_BV(CH_BIT));
-    
-    if (sec)  *sec =  bcd2dec(rtc[0]);
-    if (min)  *min =  bcd2dec(rtc[1]);
-    if (hour) *hour = bcd2dec(rtc[2]);
-}
-
-void DS3231M::setTime(time_t t)
-{
-    struct tm * timeinfo;
-    timeinfo = localtime (&t);
-    setTime(timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec);
-}
-
-void DS3231M::setTime(uint8_t hour, uint8_t min, uint8_t sec)
-{
-    write_byte(dec2bcd(sec), 0);
-    write_byte(dec2bcd(min), 1);
-    write_byte(dec2bcd(hour), 2);
-}
-
-void DS3231M::setTime(struct tm* tm)
-{
-    write_byte(dec2bcd(tm->tm_sec),  0);
-    write_byte(dec2bcd(tm->tm_min),  1);
-    write_byte(dec2bcd(tm->tm_hour), 2);
-    write_byte(dec2bcd(tm->tm_wday+1),  3);
-    write_byte(dec2bcd(tm->tm_mday),  4);
-    write_byte(dec2bcd(tm->tm_mon+1), 5);
-    write_byte(dec2bcd(tm->tm_year),  6);
-}
-
-void DS3231M::setAlarm(time_t t)
-{
-    struct tm * timeinfo;
-    timeinfo = localtime (&t);
-    setAlarm(timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec);
-}
-
-void DS3231M::setAlarm(uint8_t hour, uint8_t min, uint8_t sec)
-{
-    /*
-     *  07h: A1M1:0  Alarm 1 seconds
-     *  08h: A1M2:0  Alarm 1 minutes
-     *  09h: A1M3:0  Alarm 1 hour (bit6 is am/pm flag in 12h mode)
-     *  0ah: A1M4:1  Alarm 1 day/date (bit6: 1 for day, 0 for date)
-     *  Sets alarm to fire when hour, minute and second matches
-     */
-    write_byte(dec2bcd(sec), 0x07); // second
-    write_byte(dec2bcd(min), 0x08); // minute
-    write_byte(dec2bcd(hour), 0x09); // hour
-    write_byte(0x81, 0x0a); // day (upper bit must be set)
-    
-    // clear alarm flag
-    uint8_t val = read_byte(0x0f);
-    write_byte(val & ~0x01, 0x0f);
-}
-
-
-struct tm* DS3231M::getAlarm(void)
-{
-    struct tm * timeinfo = getTime();
-    uint8_t hour, min, sec;
-    
-    getAlarm(&hour, &min, &sec);
-    timeinfo->tm_hour = hour;
-    timeinfo->tm_min = min;
-    timeinfo->tm_sec = sec;
-    return timeinfo;
-}
-
-void DS3231M::getAlarm(uint8_t* hour, uint8_t* min, uint8_t* sec)
-{
-    *sec  = bcd2dec(read_byte(0x07) & ~0x80);
-    *min  = bcd2dec(read_byte(0x08) & ~0x80);
-    *hour = bcd2dec(read_byte(0x09) & ~0x80);
-}
-
-bool DS3231M::checkAlarm(void)
-{
-    // Alarm 1 flag (A1F) in bit 0
-    uint8_t val = read_byte(0x0f);
-
-    // clear flag when set
-    if (val & 1)
-        write_byte(val & ~0x01, 0x0f);
-        
-    return val & 1 ? 1 : 0;
-}
-
-void DS3231M::SQWEnable(bool enable)
-{
-    uint8_t control = read_byte(0x0E);  // read control register
-    if (enable) {
-        control |=  0x40; // set BBSQW to 1
-        control &= ~0x04; // set INTCN to 0
-    }
-    else {
-        control &= ~0x40; // set BBSQW to 0
-    }
-    // write control back
-    write_byte(control, 0x0E);
-}
-
-void DS3231M::SQWSetFreq(enum RTC_SQW_FREQ freq)
-{
-    uint8_t control = read_byte(0x0E);  // read control register
-    control &= ~0x18; // Set to 0
-    control |= (freq << 4); // Set freq bitmask
-
-    // write control back
-    write_byte(control, 0x0E);
-}
-
-void DS3231M::Osc32kHzEnable(bool enable)
-{
-    uint8_t status = read_byte(0x0F);  // read status
-
-    if (enable)
-        status |= 0x08; // set to 1
-    else
-        status &= ~0x08; // Set to 0
-
-    // write status back
-    write_byte(status, 0x0F);
-}
-
-uint8_t DS3231M::read_byte(uint8_t offset)
-{
-    char buf[1];
-    buf[0] = offset;
-    
-    int w = m_i2c.write(DS3231M_SLAVE_ADDR, buf, 1);
-    int r = m_i2c.read(DS3231M_SLAVE_ADDR,  buf, 1);    
-    //error = ((w!=0) || (r!=0));
-    
-    return buf[0];
-}
-
-void DS3231M::write_byte(uint8_t b, uint8_t offset)
-{
-    char buf[2];
-    buf[0] = offset;
-    buf[1] = b;
-    
-    int w = m_i2c.write(DS3231M_SLAVE_ADDR, buf, 2); 
-    //error=(w!=0);   
-}
-
-void DS3231M::write_addr(uint8_t addr)
-{
-    /*
-    Wire.beginTransmission(RTC_ADDR);
-    Wire.write(addr);
-    Wire.endTransmission();
-    */
-}
-