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# time.c

Go to the documentation of this file.

    00001 /*****************************************************************************************
    00002  Copyright (c) 2002-2004 The UbixOS Project
    00003  All rights reserved.
    00004
    00005  Redistribution and use in source and binary forms, with or without modification, are
    00006  permitted provided that the following conditions are met:
    00007
    00008  Redistributions of source code must retain the above copyright notice, this list of
    00009  conditions, the following disclaimer and the list of authors.  Redistributions in binary
    00010  form must reproduce the above copyright notice, this list of conditions, the following
    00011  disclaimer and the list of authors in the documentation and/or other materials provided
    00012  with the distribution. Neither the name of the UbixOS Project nor the names of its
    00013  contributors may be used to endorse or promote products derived from this software
    00014  without specific prior written permission.
    00015
    00016  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
    00017  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    00018  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
    00019  THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    00020  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
    00021  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    00022  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
    00023  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    00024  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00025
    00026  $Id: time_8c-source.html 88 2016-01-12 00:11:29Z reddawg $
    00027
    00028 *****************************************************************************************/
    00029
    00030 #include <ubixos/types.h>
    00031 #include <ubixos/time.h>
    00032 #include <ubixos/vitals.h>
    00033 #include <lib/kprintf.h>
    00034 #include <assert.h>
    00035
    00036 static int month[12] = {
    00037         0,
    00038         DAY*(31),
    00039         DAY*(31+29),
    00040         DAY*(31+29+31),
    00041         DAY*(31+29+31+30),
    00042         DAY*(31+29+31+30+31),
    00043         DAY*(31+29+31+30+31+30),
    00044         DAY*(31+29+31+30+31+30+31),
    00045         DAY*(31+29+31+30+31+30+31+31),
    00046         DAY*(31+29+31+30+31+30+31+31+30),
    00047         DAY*(31+29+31+30+31+30+31+31+30+31),
    00048         DAY*(31+29+31+30+31+30+31+31+30+31+30)
    00049 };
    00050
    00051 static int timeCmosRead(int addr) {
    00052   outportByteP(0x70,addr);
    00053   return((int)inportByte(0x71));
    00054   }
    00055
    00056 int time_init() {
    00057   int i;
    00058   struct timeStruct time;
    00059
    00060   for (i = 0 ; i < 1000000 ; i++) {
    00061     if (!(timeCmosRead(10) & 0x80)) {
    00062       break;
    00063       }
    00064     }
    00065
    00066   do {
    00067     time.sec = timeCmosRead(0);
    00068     time.min = timeCmosRead(2);
    00069     time.hour = timeCmosRead(4);
    00070     time.day = timeCmosRead(7);
    00071     time.mon = timeCmosRead(8);
    00072     time.year = timeCmosRead(9);
    00073     } while (time.sec != timeCmosRead(0));
    00074
    00075   BCD_TO_BIN(time.sec);
    00076   BCD_TO_BIN(time.min);
    00077   BCD_TO_BIN(time.hour);
    00078   BCD_TO_BIN(time.day);
    00079   BCD_TO_BIN(time.mon);
    00080   BCD_TO_BIN(time.year);
    00081
    00082   /* Set up our start time in seconds */
    00083   systemVitals->timeStart = timeMake(&time);
    00084
    00085   kprintf("%i/%i/%i %i:%i.%i\n",time.mon,time.day,time.year,time.hour,time.min,time.sec);
    00086
    00087
    00088   /* Return so we know all went well */
    00089   return(0x0);
    00090   }
    00091
    00092 uInt32 timeMake(struct timeStruct *time) {
    00093   uInt32 res;
    00094   int year;
    00095
    00096   year = (time->year+100) - 70;
    00097   /* magic offsets (y+1) needed to get leapyears right.*/
    00098   res = YEAR*year + DAY*((year+1)/4);
    00099   res += month[time->mon];
    00100   /* and (y+2) here. If it wasn't a leap-year, we have to adjust */
    00101   if (time->mon>1 && ((year+2)%4))
    00102     res -= DAY;
    00103   res += DAY*(time->day-1);
    00104   res += HOUR*time->hour;
    00105   res += MINUTE*time->min;
    00106   res += time->sec;
    00107   return(res);
    00108   }
    00109
    00110 int gettimeofday(struct timeval *tp,struct timezone *tzp) {
    00111   //tp->tv_sec  = systemVitals->timeStart + systemVitals->sysUptime;
    00112   tp->tv_sec    = 0x0;//systemVitals->sysUptime;
    00113   tp->tv_usec = 0x0;
    00114   return(0x0);
    00115   }
    00116
    00117 /***
    00118  END
    00119  ***/
    00120