diff options
Diffstat (limited to 'main/common/dallasdate.c')
| -rw-r--r-- | main/common/dallasdate.c | 469 |
1 files changed, 239 insertions, 230 deletions
diff --git a/main/common/dallasdate.c b/main/common/dallasdate.c index 31af955..7ebf43f 100644 --- a/main/common/dallasdate.c +++ b/main/common/dallasdate.c @@ -1,7 +1,7 @@ /************************************************************************** * * Copyright (c) 2013 Alcatel-Lucent - * + * * Alcatel Lucent licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in * compliance with the License. A copy of the License is contained the @@ -25,7 +25,7 @@ * called to setup the connection between TFS and the DS1743W. * * Applicable to DS1743W and DS1746WP. Probably also works with other - * Dallas timekeepers, but the above two are the only ones I've tested + * Dallas timekeepers, but the above two are the only ones I've tested * it with. This code is assumed to be compiled with the DATEREGBASE * value defined elsewhere. This value is the address at which the code * is to access the 8-byte register map that contains the time/date @@ -46,70 +46,70 @@ #error DATEREGBASE not defined #endif -#define WRITE 0x80 /* part of 'cent' member */ -#define READ 0x40 /* part of 'cent' member */ -#define FT 0x40 /* part of 'wday' member */ -#define OSC_OFF 0x80 /* part of 'sec' member */ +#define WRITE 0x80 /* part of 'cent' member */ +#define READ 0x40 /* part of 'cent' member */ +#define FT 0x40 /* part of 'wday' member */ +#define OSC_OFF 0x80 /* part of 'sec' member */ /* Masks for various portions of the time/date... */ -#define YEAR10_MASK 0xf0 -#define MONTH10_MASK 0x10 -#define DATE10_MASK 0x30 -#define DAY10_MASK 0x00 -#define HOUR10_MASK 0x30 -#define MINUTE10_MASK 0x70 -#define SECOND10_MASK 0x70 -#define CENTURY10_MASK 0x30 -#define YEAR_MASK 0x0f /* Year is 0-99 */ -#define MONTH_MASK 0x0f /* Month is 1-12 */ -#define DATE_MASK 0x0f /* Date is 1-31 */ -#define DAY_MASK 0x07 /* Day is 1-7 */ -#define HOUR_MASK 0x0f /* Hour is 0-23 */ -#define MINUTE_MASK 0x0f /* Minutes is 0-59 */ -#define SECOND_MASK 0x0f /* Seconds is 0-59 */ -#define CENTURY_MASK 0x0f /* Century is 0-39 */ +#define YEAR10_MASK 0xf0 +#define MONTH10_MASK 0x10 +#define DATE10_MASK 0x30 +#define DAY10_MASK 0x00 +#define HOUR10_MASK 0x30 +#define MINUTE10_MASK 0x70 +#define SECOND10_MASK 0x70 +#define CENTURY10_MASK 0x30 +#define YEAR_MASK 0x0f /* Year is 0-99 */ +#define MONTH_MASK 0x0f /* Month is 1-12 */ +#define DATE_MASK 0x0f /* Date is 1-31 */ +#define DAY_MASK 0x07 /* Day is 1-7 */ +#define HOUR_MASK 0x0f /* Hour is 0-23 */ +#define MINUTE_MASK 0x0f /* Minutes is 0-59 */ +#define SECOND_MASK 0x0f /* Seconds is 0-59 */ +#define CENTURY_MASK 0x0f /* Century is 0-39 */ struct dsdate { - uchar cent; /* B7=W, B6=R, B5-4=10cent, B3-0=cent (00-39) */ - uchar sec; /* B7=OSC; B6-4=10secs; B3-0=sec (0-59) */ - uchar min; /* B6-4=10mins; B3-0=min (0-59) */ - uchar hour; /* B4-5=10hour; B3-0=hour (0-23) */ - uchar wday; /* B6=FT B2-0=day (1-7) */ - uchar mday; /* B4-5=10date; B3-0=date (1-31) */ - uchar month; /* B4=10mo; B3-0=month (1-12) */ - uchar year; /* MS-nibble=10Year; LS-nibble=year (0-99) */ + uchar cent; /* B7=W, B6=R, B5-4=10cent, B3-0=cent (00-39) */ + uchar sec; /* B7=OSC; B6-4=10secs; B3-0=sec (0-59) */ + uchar min; /* B6-4=10mins; B3-0=min (0-59) */ + uchar hour; /* B4-5=10hour; B3-0=hour (0-23) */ + uchar wday; /* B6=FT B2-0=day (1-7) */ + uchar mday; /* B4-5=10date; B3-0=date (1-31) */ + uchar month; /* B4=10mo; B3-0=month (1-12) */ + uchar year; /* MS-nibble=10Year; LS-nibble=year (0-99) */ }; -#define DS1743REGS ((struct dsdate *)DATEREGBASE) -#define DS_century (DS1743REGS->cent) -#define DS_second (DS1743REGS->sec) -#define DS_minute (DS1743REGS->min) -#define DS_hour (DS1743REGS->hour) -#define DS_wday (DS1743REGS->wday) -#define DS_mday (DS1743REGS->mday) -#define DS_month (DS1743REGS->month) -#define DS_year (DS1743REGS->year) +#define DS1743REGS ((struct dsdate *)DATEREGBASE) +#define DS_century (DS1743REGS->cent) +#define DS_second (DS1743REGS->sec) +#define DS_minute (DS1743REGS->min) +#define DS_hour (DS1743REGS->hour) +#define DS_wday (DS1743REGS->wday) +#define DS_mday (DS1743REGS->mday) +#define DS_month (DS1743REGS->month) +#define DS_year (DS1743REGS->year) -#define SECONDS_IN_DAY 86400 +#define SECONDS_IN_DAY 86400 static char DaysInMonth[] = { 31, 28, 31, 30, 31, 30, /* Jan, Feb, Mar, Apr, May, Jun */ - 31, 31, 30, 31, 30, 31 /* Jul, Aug, Sep, Oct, Nov, Dec */ + 31, 31, 30, 31, 30, 31 /* Jul, Aug, Sep, Oct, Nov, Dec */ }; /* rangecheck(): - Return 0 if value is outside the range of high and low; else 1. + Return 0 if value is outside the range of high and low; else 1. */ static int rangecheck(int value, char *name, int low, int high) { - if ((value < low) || (value > high)) { - printf("%s outside valid range of %d - %d\n", - name,low,high); - return(0); - } - return(1); + if((value < low) || (value > high)) { + printf("%s outside valid range of %d - %d\n", + name,low,high); + return(0); + } + return(1); } /* to_dsdatefmt(): @@ -119,54 +119,55 @@ rangecheck(int value, char *name, int low, int high) static unsigned char to_dsdatefmt(int value) { - int tens; - - tens = 0; - while (value >= 10) { - tens++; - value -= 10; - } - return((tens << 4) | value); + int tens; + + tens = 0; + while(value >= 10) { + tens++; + value -= 10; + } + return((tens << 4) | value); } static int from_dsdatefmt(unsigned char value, unsigned char mask10) { - int newvalue; - - newvalue = value & 0x0f; - newvalue += 10 * ((value & mask10) >> 4); - return(newvalue); + int newvalue; + + newvalue = value & 0x0f; + newvalue += 10 * ((value & mask10) >> 4); + return(newvalue); } int showDate(int center) { - int (*pfunc)(char *, ...); - int day, date, month, year, hour, minute, second, century; + int (*pfunc)(char *, ...); + int day, date, month, year, hour, minute, second, century; - DS_century |= READ; /* Set READ bit */ + DS_century |= READ; /* Set READ bit */ - century = from_dsdatefmt(DS_century,CENTURY10_MASK); - second = from_dsdatefmt(DS_second,SECOND10_MASK); - minute = from_dsdatefmt(DS_minute,MINUTE10_MASK); - hour = from_dsdatefmt(DS_hour,HOUR10_MASK); - day = from_dsdatefmt(DS_wday,DAY10_MASK); - date = from_dsdatefmt(DS_mday,DATE10_MASK); - month = from_dsdatefmt(DS_month,MONTH10_MASK); - year = (((DS_year & 0xf0) >> 4) * 10) + (DS_year & 0x0f); + century = from_dsdatefmt(DS_century,CENTURY10_MASK); + second = from_dsdatefmt(DS_second,SECOND10_MASK); + minute = from_dsdatefmt(DS_minute,MINUTE10_MASK); + hour = from_dsdatefmt(DS_hour,HOUR10_MASK); + day = from_dsdatefmt(DS_wday,DAY10_MASK); + date = from_dsdatefmt(DS_mday,DATE10_MASK); + month = from_dsdatefmt(DS_month,MONTH10_MASK); + year = (((DS_year & 0xf0) >> 4) * 10) + (DS_year & 0x0f); - DS_century &= ~READ; /* Clear READ bit */ + DS_century &= ~READ; /* Clear READ bit */ - if (center) - pfunc = cprintf; - else - pfunc = printf; + if(center) { + pfunc = cprintf; + } else { + pfunc = printf; + } - pfunc("%02d/%02d/%02d%02d @ %02d:%02d:%02d\n", - month,date,century,year,hour,minute,second); + pfunc("%02d/%02d/%02d%02d @ %02d:%02d:%02d\n", + month,date,century,year,hour,minute,second); - return(0); + return(0); } #if INCLUDE_TFS @@ -174,189 +175,197 @@ showDate(int center) static int YearIsLeap(int year) { - if (year % 4) /* if year not divisible by 4... */ - return(0); /* it's not leap */ - if (year < 1582) /* all years divisible by 4 were */ - return(1); /* leap prior to 1582 */ - if (year % 100) /* if year divisible by 4, */ - return(1); /* but not by 100, it's leap */ - if (year % 400) /* if year divisible by 100, */ - return(0); /* but not by 400, it's not leap */ - else - return(1); /* if divisible by 400, it's leap */ + if(year % 4) { /* if year not divisible by 4... */ + return(0); /* it's not leap */ + } + if(year < 1582) { /* all years divisible by 4 were */ + return(1); /* leap prior to 1582 */ + } + if(year % 100) { /* if year divisible by 4, */ + return(1); /* but not by 100, it's leap */ + } + if(year % 400) { /* if year divisible by 100, */ + return(0); /* but not by 400, it's not leap */ + } else { + return(1); /* if divisible by 400, it's leap */ + } } /* GetAtime(): - * Build a string based on the incoming long value as described in - * GetLtime()... - * Used by TFS to keep track of file time. + * Build a string based on the incoming long value as described in + * GetLtime()... + * Used by TFS to keep track of file time. */ static char * GetAtime(long tval, char *buf, int bsize) { - int year; /* Actual year */ - int doy; /* Day of year */ - int sid; /* Seconds in day */ - int leapyear; /* Set if year is leap */ - int month, hour, minute; - - if ((bsize < 18) || (tval == TIME_UNDEFINED)) { - *buf = 0; - return(buf); - } - - /* Break down the basic bitfields: */ - year = 2000 + ((tval >> 26) & 0x3f); - leapyear = YearIsLeap(year); - doy = ((tval >> 17) & 0x1ff); - sid = tval & 0x1ffff; - - /* Now build the date from the bit fields: */ - hour = sid / 3600; - sid -= (hour*3600); - minute = sid/60; - sid -= (minute*60); - - month = 0; - while(doy > DaysInMonth[month]) { - doy -= DaysInMonth[month]; - if ((month == 1) && (leapyear)) - doy--; - month++; - } - sprintf(buf,"%02d/%02d/%02d@%02d:%02d:%02d", - month+1,doy,year,hour,minute,sid); - return(buf); + int year; /* Actual year */ + int doy; /* Day of year */ + int sid; /* Seconds in day */ + int leapyear; /* Set if year is leap */ + int month, hour, minute; + + if((bsize < 18) || (tval == TIME_UNDEFINED)) { + *buf = 0; + return(buf); + } + + /* Break down the basic bitfields: */ + year = 2000 + ((tval >> 26) & 0x3f); + leapyear = YearIsLeap(year); + doy = ((tval >> 17) & 0x1ff); + sid = tval & 0x1ffff; + + /* Now build the date from the bit fields: */ + hour = sid / 3600; + sid -= (hour*3600); + minute = sid/60; + sid -= (minute*60); + + month = 0; + while(doy > DaysInMonth[month]) { + doy -= DaysInMonth[month]; + if((month == 1) && (leapyear)) { + doy--; + } + month++; + } + sprintf(buf,"%02d/%02d/%02d@%02d:%02d:%02d", + month+1,doy,year,hour,minute,sid); + return(buf); } /* GetLtime(): - * Build a long with the following format.... - * - * B31-26 year since 2000 (0-127 yep, this breaks in 2128) - * B25-17 day of year (1-365) - * B16-0 seconds in day (0-86400) + * Build a long with the following format.... + * + * B31-26 year since 2000 (0-127 yep, this breaks in 2128) + * B25-17 day of year (1-365) + * B16-0 seconds in day (0-86400) * - * Used by TFS to keep track of file time. + * Used by TFS to keep track of file time. */ static long GetLtime(void) { - long tval; - int year, month, mday, seconds, doy, leapyear; - - DS_century |= READ; /* Set READ bit */ - - year = from_dsdatefmt(DS_year,YEAR10_MASK); /* 00=2000 */ - month = from_dsdatefmt(DS_month,MONTH10_MASK)-1; /* 0-11 */ - mday = from_dsdatefmt(DS_mday,DATE10_MASK); /* 1-31 */ - leapyear = YearIsLeap(year+2000); - - if ((month > 11) || (month < 0) || (mday < 1) || (mday > 31)) - return(TIME_UNDEFINED); - - /* Determine current day of year... */ - doy = mday; - while(month > 0) { - doy += DaysInMonth[month-1]; - if ((month == 1) && leapyear) - doy++; - month--; - } - - /* Determine current second of day... */ - seconds = (from_dsdatefmt(DS_hour,HOUR10_MASK) * 3600); - seconds += (from_dsdatefmt(DS_minute,MINUTE10_MASK) * 60); - seconds += from_dsdatefmt(DS_second,SECOND10_MASK); - - DS_century &= ~READ; /* Clear READ bit */ - - tval = (((year & 0x3f) << 26) | - ((doy & 0x1ff) << 17) | - (seconds & 0x1ffff)); - return(tval); + long tval; + int year, month, mday, seconds, doy, leapyear; + + DS_century |= READ; /* Set READ bit */ + + year = from_dsdatefmt(DS_year,YEAR10_MASK); /* 00=2000 */ + month = from_dsdatefmt(DS_month,MONTH10_MASK)-1; /* 0-11 */ + mday = from_dsdatefmt(DS_mday,DATE10_MASK); /* 1-31 */ + leapyear = YearIsLeap(year+2000); + + if((month > 11) || (month < 0) || (mday < 1) || (mday > 31)) { + return(TIME_UNDEFINED); + } + + /* Determine current day of year... */ + doy = mday; + while(month > 0) { + doy += DaysInMonth[month-1]; + if((month == 1) && leapyear) { + doy++; + } + month--; + } + + /* Determine current second of day... */ + seconds = (from_dsdatefmt(DS_hour,HOUR10_MASK) * 3600); + seconds += (from_dsdatefmt(DS_minute,MINUTE10_MASK) * 60); + seconds += from_dsdatefmt(DS_second,SECOND10_MASK); + + DS_century &= ~READ; /* Clear READ bit */ + + tval = (((year & 0x3f) << 26) | + ((doy & 0x1ff) << 17) | + (seconds & 0x1ffff)); + return(tval); } /* tfsTimeEnable(): - * Hook the file timestamping in TFS to the DS1743 device... + * Hook the file timestamping in TFS to the DS1743 device... */ void tfsTimeEnable(void) { - tfsctrl(TFS_TIMEFUNCS,(long)GetLtime,(long)GetAtime); + tfsctrl(TFS_TIMEFUNCS,(long)GetLtime,(long)GetAtime); } #endif char *DateHelp[] = { - "Display (mm/dd/yyyy@hh:mm:ss) or modify time and date.", - "[{day date month year hour min sec}]", + "Display (mm/dd/yyyy@hh:mm:ss) or modify time and date.", + "[{day date month year hour min sec}]", #if INCLUDE_VERBOSEHELP - "Where...", - " day: 1-7 (sun=1)", - " date: 1-31", - " month: 1-12", - " year: 0-3899", - " hour: 0-23", - " min: 0-59", - " sec: 0-59", - "Note: 'date off' disables the oscillator", + "Where...", + " day: 1-7 (sun=1)", + " date: 1-31", + " month: 1-12", + " year: 0-3899", + " hour: 0-23", + " min: 0-59", + " sec: 0-59", + "Note: 'date off' disables the oscillator", #endif - 0 + 0 }; int Date(int argc,char *argv[]) { - int day, date, month, year, hour, minute, second, century, rngchk; - - if (argc == 1) { - if (DS_second & OSC_OFF) - printf("Warning: oscillator disabled.\n"); - showDate(0); - return(CMD_SUCCESS); - } - else if ((argc == 2) && !strcmp(argv[1],"off")) { - DS_century |= WRITE; /* Disable the oscillator */ - DS_second = OSC_OFF; /* to save battery life. */ - DS_century &= ~WRITE; - return(CMD_SUCCESS); - } - else if (argc != 8) - return(CMD_PARAM_ERROR); - - day = atoi(argv[1]); - date = atoi(argv[2]); - month = atoi(argv[3]); - year = atoi(argv[4]); - hour = atoi(argv[5]); - minute = atoi(argv[6]); - second = atoi(argv[7]); - - rngchk = 0; - rngchk += rangecheck(day,"day",1,7); - rngchk += rangecheck(date,"date",1,31); - rngchk += rangecheck(month,"month",1,12); - rngchk += rangecheck(year,"year",0,3899); - rngchk += rangecheck(hour,"hour",0,23); - rngchk += rangecheck(minute,"minute",0,59); - rngchk += rangecheck(second,"second",0,59); - - if (rngchk != 7) - return(CMD_PARAM_ERROR); - - DS_century = WRITE; /* Set WRITE bit */ - DS_second = to_dsdatefmt(second) & ~OSC_OFF; - DS_minute = to_dsdatefmt(minute); - DS_hour = to_dsdatefmt(hour); - DS_wday = day; - DS_mday = to_dsdatefmt(date); - DS_month = to_dsdatefmt(month); - century = year / 100; - year = year % 100; - DS_year = to_dsdatefmt(year); - DS_century = (to_dsdatefmt(century)&(CENTURY_MASK|CENTURY10_MASK))|WRITE; - - DS_century &= ~WRITE; /* Clear WRITE bit */ - return(CMD_SUCCESS); + int day, date, month, year, hour, minute, second, century, rngchk; + + if(argc == 1) { + if(DS_second & OSC_OFF) { + printf("Warning: oscillator disabled.\n"); + } + showDate(0); + return(CMD_SUCCESS); + } else if((argc == 2) && !strcmp(argv[1],"off")) { + DS_century |= WRITE; /* Disable the oscillator */ + DS_second = OSC_OFF; /* to save battery life. */ + DS_century &= ~WRITE; + return(CMD_SUCCESS); + } else if(argc != 8) { + return(CMD_PARAM_ERROR); + } + + day = atoi(argv[1]); + date = atoi(argv[2]); + month = atoi(argv[3]); + year = atoi(argv[4]); + hour = atoi(argv[5]); + minute = atoi(argv[6]); + second = atoi(argv[7]); + + rngchk = 0; + rngchk += rangecheck(day,"day",1,7); + rngchk += rangecheck(date,"date",1,31); + rngchk += rangecheck(month,"month",1,12); + rngchk += rangecheck(year,"year",0,3899); + rngchk += rangecheck(hour,"hour",0,23); + rngchk += rangecheck(minute,"minute",0,59); + rngchk += rangecheck(second,"second",0,59); + + if(rngchk != 7) { + return(CMD_PARAM_ERROR); + } + + DS_century = WRITE; /* Set WRITE bit */ + DS_second = to_dsdatefmt(second) & ~OSC_OFF; + DS_minute = to_dsdatefmt(minute); + DS_hour = to_dsdatefmt(hour); + DS_wday = day; + DS_mday = to_dsdatefmt(date); + DS_month = to_dsdatefmt(month); + century = year / 100; + year = year % 100; + DS_year = to_dsdatefmt(year); + DS_century = (to_dsdatefmt(century)&(CENTURY_MASK|CENTURY10_MASK))|WRITE; + + DS_century &= ~WRITE; /* Clear WRITE bit */ + return(CMD_SUCCESS); } |