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102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
#include <stdlib.h>
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#include <time.h>
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#include <sys/time.h>
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#include "datetime.h"
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RTC_DATA_ATTR struct time_struct now; // keep track of time
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//String time_zone_base = "UTC";
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const char *ntpServer = "pool.ntp.org";
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const long gmtOffset_sec = 3600;
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const int daylightOffset_sec = 3600;
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void printLocalTime();
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int8_t get_date_dtls(String time_zone);
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// TODO refactore complete file
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void setupDateTime()
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{
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configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
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printLocalTime();
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get_date_dtls("");
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}
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void printLocalTime()
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{
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struct tm timeinfo;
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if (!getLocalTime(&timeinfo))
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{
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Serial.println("Failed to obtain time");
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return;
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}
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Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S");
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}
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// Time APIs
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int8_t get_date_dtls(String time_zone)
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{
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//String time_zone_string = time_zone_base + time_zone;
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//setenv("TZ", time_zone_string.c_str(), 1);
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//setenv("TZ", "CET-1CEST,M3.5.0/02,M10.5.0/03", 1);
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struct tm timeinfo;
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if (!getLocalTime(&timeinfo))
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{
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Serial.println("Failed to obtain time");
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return -1;
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}
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time_t epoch = mktime(&timeinfo);
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sscanf(ctime(&epoch), "%s %s %hhd %hhd:%hhd:%hhd %d", now.wday, now.month, &now.mday, &now.mil_hour, &now.min, &now.sec, &now.year);
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now.month_num = timeinfo.tm_mon + 1;
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// gives offset of first day of the month with respect to Monday
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//https://www.tondering.dk/claus/cal/chrweek.php#calcdow
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// 1=Monday to 7=Sunday
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uint8_t a = (14 - now.month_num) / 12;
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uint16_t y = now.year - a;
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uint16_t m = now.month_num + (12 * a) - 2;
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// change +7 at the end to whatever first day of week you want.
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// But change the header '"Mon Tue Wed Thu Fri Sat Sun"' as well above.
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// currently +7 => Monday
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// +1 => Sunday
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now.day_offset = (((1 + y + (y / 4) - (y / 100) + (y / 400) + ((31 * m) / 12)) % 7) + 7) % 7;
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// convert to 12 hour
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if (now.mil_hour > 12)
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{
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now.hour = now.mil_hour - 12;
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}
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else
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{
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now.hour = now.mil_hour;
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}
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Serial.printf("Time is %d %d:%d:%d on %s on the %d/%d/%d . It is the month of %s. day_offset: %d\n", now.mil_hour, now.hour, now.min, now.sec, now.wday, now.mday, now.month_num, now.year, now.month, now.day_offset);
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return 0;
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}
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/*
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int8_t set_time()
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{
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struct tm t;
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t.tm_year = 2020 - 1900;
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t.tm_mon = 1 - 1; // Month, 1 - jan to 12 - dec
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t.tm_mday = 27; // Day of the month
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t.tm_hour = 9;
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t.tm_min = 57;
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t.tm_sec = 0;
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t.tm_isdst = -1; // Is DST on? 1 = yes, 0 = no, -1 = unknown
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time_t epoch;
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epoch = mktime(&t);
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struct timeval now;
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now.tv_sec = epoch;
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now.tv_usec = 0;
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struct timezone tz = {-330, 0};
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return settimeofday(&now, &tz);
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}
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*/ |