Diff: Rtc_Ds1307.cpp

Revision:

10:8c0c306cee03

Parent:

9:5627b407e097

diff -r 5627b407e097 -r 8c0c306cee03 Rtc_Ds1307.cpp
--- a/Rtc_Ds1307.cpp	Wed Jun 26 21:05:46 2013 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,270 +0,0 @@
-#include "mbed.h"
-#include "Rtc_Ds1307.h"
-
-#ifndef DEBUG
-//#define DEBUG
-#endif
-#include "debug.h"
-
-const char *Rtc_Ds1307::m_weekDays[] = { "Saturday", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday" };    
-
-
-Rtc_Ds1307::Rtc_Ds1307(PinName sda, PinName scl)
-{
-    //  Create a new I2C object
-    m_rtc = new I2C(sda, scl);
-    if (m_rtc == NULL)
-        error("Rtc_Ds1307");
-        
-    // Set the frequency to standard 100kHz
-    m_rtc->frequency(100000);
-}
-
-Rtc_Ds1307::~Rtc_Ds1307()
-{
-    if (m_rtc != NULL)
-        delete m_rtc;
-}
-
-bool Rtc_Ds1307::setTime(Time_rtc& time, bool start, bool thm)
-{
-    char buffer[7];
-    INFO("reading clock registers to write the new time : %d:%d:%d\n", time.hour, time.min, time.sec);
-    if (!read(0,buffer,7)) {
-        ERR("Failed to read from RTC\n");
-        return false;
-    }
-    //  Now update only the time part (saving the existing flags)
-    if (start) { buffer[0] &= 0x7F; } else { buffer[0] |= 0x80; }
-    buffer[0] = (buffer[0]&0x80) | (decimalToBcd(time.sec)& 0x7f);
-    buffer[1] = decimalToBcd(time.min);
-    if (thm) {
-        //  AM PM format
-        buffer[2] = (buffer[2]& 196) | (time.hour>12 ? (0x20 | ((decimalToBcd(time.hour-12)))) : decimalToBcd(time.hour));
-    }
-    else {
-        // 24 hours format
-        buffer[2] = (buffer[2]& 196) | (decimalToBcd(time.hour) & 0x3F);
-    }
-    buffer[3] = time.wday;
-    buffer[4] = decimalToBcd(time.date);
-    buffer[5] = decimalToBcd(time.mon);
-    buffer[6] = decimalToBcd(time.year-2000);
-    INFO("Writing new time and date data to RTC\n");
-    if (!write(0, buffer, 7) ) {
-        ERR("Failed to write the data to RTC!\n");
-        return false;
-    }
-    return true;
-}
-
-bool Rtc_Ds1307::getTime(Time_rtc& time)
-{
-    char buffer[7];
-    bool thm = false;
-    
-    INFO("Getting time from RTC\n");
-    if (!read(0, buffer, 7) ) {
-        //  Failed to read
-        ERR("Failed to read from RTC\n");
-        return false;
-    }
-    thm = ((buffer[2] & 64) == 64);
-    time.sec = bcdToDecimal(buffer[0]&0x7F);
-    time.min = bcdToDecimal(buffer[1]);
-    if (thm) {
-        // in 12-hour-mode, we need to add 12 hours if PM bit is set
-        time.hour = Rtc_Ds1307::bcdToDecimal( buffer[2] & 31 );
-        if ((buffer[2] & 32) == 32)
-            time.hour += 12;
-    }
-    else {
-        time.hour = Rtc_Ds1307::bcdToDecimal( buffer[2] & 63 );
-    }  
-    time.wday = buffer[3]; 
-    time.date = Rtc_Ds1307::bcdToDecimal( buffer[4]);
-    time.mon = Rtc_Ds1307::bcdToDecimal( buffer[5]);
-    time.year = Rtc_Ds1307::bcdToDecimal(buffer[6]) + 2000;   //  plus hundret is because RTC is giving the years since 2000, but std c struct tm needs years since 1900
-    
-    return true;
-}
-
-
-bool Rtc_Ds1307::startClock()
-{
-    char strtStop;
-    
-    INFO ("Reading clock start/stop register value\n");
-    if (!read(0, &strtStop, 1)) {
-        ERR("Failed to read clock start stop register !\n");
-        return false;
-    }
-    
-    strtStop &= 0x7F;
-    
-    INFO("Writing back start/stop register value\n");
-    if (!write(0, &strtStop, 1)) {
-        ERR("Failed to write the start stop register !\n");
-        return false;
-    }
-    
-    INFO("Start/stop register value successfully written\n");
-    return true;
-}
-
-bool Rtc_Ds1307::stopClock()
-{
-    char strtStop;
-    
-    INFO ("Reading clock start/stop register value\n");
-    if (!read(0, &strtStop, 1)) {
-        ERR("Failed to read clock start stop register !\n");
-        return false;
-    }
-    
-    strtStop |= 0x80;
-    
-    INFO("Writing back start/stop register value\n");
-    if (!write(0, &strtStop, 1)) {
-        ERR("Failed to write the start stop register !\n");
-        return false;
-    }
-    
-    INFO("Start/stop register value successfully written\n");
-    return true;
-}
-
-bool Rtc_Ds1307::setSquareWaveOutput(bool ena, SqwRateSelect_t rs)
-{
-    char reg;
-    INFO("Reading register value first\n");
-    
-    if (!read(7,&reg, 1)) {
-        ERR("Failed to read register value !\n");
-        return false;
-    }
-    INFO("[Reg:0x07] = %02x\n", reg); 
-    
-    //  preserve the OUT control bit while writing the frequency and enable bits
-    reg = (reg & 0x80) | (ena ? 0x10 : 0) | ((char)rs & 0x03);
-
-    INFO("Writing back register value\n");
-    INFO("[Reg:0x07] = %02x\n", reg); 
-    
-    if (!write(7, &reg, 1)) {
-        ERR("Failed to write register value !\n");
-        return false;
-    }
-    
-    INFO("Successfully changed the square wave output.\n");
-    return true;
-}
-
-
-
-bool Rtc_Ds1307::read(int address, char *buffer, int len)
-{
-    char buffer2[2] = {(char)address, 0};
-    
-//    m_rtc->start();
-    if (m_rtc->write(0xd0, buffer2, 1) != 0) {
-        ERR("Failed to write register address on rtv!\n");
-        m_rtc->stop();
-        return false;
-    }
-    if (m_rtc->read(0xd0, buffer, len) != 0) {
-        ERR("Failed to read register !\n");
-        return false;
-    }
-    m_rtc->stop();
-    
-    INFO("Successfully read %d registers from RTC\n", len);
-    return true;
-}
-
-bool Rtc_Ds1307::write(int address, char *buffer, int len)
-{
-    char buffer2[10];
-    buffer2[0] = address&0xFF;
-    for (int i = 0 ; i < len ; i++)
-        buffer2[i+1] = buffer[i];
-
-//    m_rtc->start();        
-    if (m_rtc->write(0xd0, buffer2, len+1) != 0) {
-        ERR("Failed to write data to rtc\n");
-        m_rtc->stop();
-        return false;
-    }
-    m_rtc->stop();
-    return true;
-}
-
-
-
-
-RtcCls::RtcCls(PinName sda, PinName scl, PinName sqw, bool bUseSqw)
-    : Rtc_Ds1307(sda, scl), m_sqw(sqw), m_bUseSqw(bUseSqw), m_bAlarmEnabled(false), m_alarmfunc(NULL)
-{
-    Time_rtc t;
-    //  query time from device
-    getTime(t);
-    //  sync the time with MBED RTC
-    struct tm now = {t.sec, t.min, t.hour, t.date, t.mon-1, t.year-1900};
-    m_time = mktime(&now);
-    set_time(m_time);
-    
-    //  Only register the callback and start the SQW if requested to do so. Otherwise the system
-    //  will use the MBED built-in RTC.
-    if (m_bUseSqw) {
-        //  start the wave
-        setSquareWaveOutput(true, RS1Hz);
-        //  register callback from now on the time will be maintained by the square wave input
-        m_sqw.rise(this, &RtcCls::_callback);
-    }
-}
-
-void RtcCls::_callback(void)
-{
-//    INFO("Tick!");
-    //  Simply increase the number of seconds
-    m_time++;
-//    if (m_bAlarmEnabled && (m_time == m_alarmTime)) {
-//        if (m_alarmfunc != NULL)
-//            m_alarmfunc();
-//        m_bAlarmEnabled = false;
-//    }
-}
-
-time_t RtcCls::getTime()
-{
-    //  when not using the HW support, we have to query the RTC chip. Other wise we can just return out stored value
-    if (!m_bUseSqw) {
-        Time_rtc t;
-        getTime(t);
-        struct tm now = {t.sec, t.min, t.hour, t.date, t.mon-1, t.year-1900};
-        m_time = mktime(&now);
-        INFO("getting time %02d.%02d.%04d %02d:%02d:%02d Ticks=%08lx", t.date, t.mon, t.year, t.hour, t.min, t.sec, m_time);
-    }
-    else {
-        INFO("getting time Ticks=%08lx", m_time);
-    }
-    return m_time;
-}
-
-void RtcCls::setTime(time_t t)
-{
-    Time_rtc tim;
-    struct tm *now;
-    now = localtime(&t);
-
-    tim.sec = now->tm_sec;
-    tim.min = now->tm_min;
-    tim.hour = now->tm_hour;
-    tim.date = now->tm_mday;
-    tim.mon = now->tm_mon+1;
-    tim.year = now->tm_year + 1900;
-    tim.wday = now->tm_wday +1;
-
-    setTime( tim, true, true);
-    set_time(t);
-}