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use mktime to compute unix timestamp #30

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use mktime to compute unix timestamp #30

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29 changes: 23 additions & 6 deletions src/TimeUtils.h
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
#include <Arduino.h>
#include <time.h>

/**
* @class Time
Expand Down Expand Up @@ -91,19 +92,35 @@ class Time {
* @return The time in UNIX timestamp format.
*/
String getUNIXTimestampString() {
// Simple conversion to UNIX timestamp, not accounting for leap years or time zones
long timestamp = second + minute*60 + hour*3600 + day*86400 + (month-1)*2629743 + (year-1970)*31556926;
return String(timestamp);
return String(getUNIXTimestamp());
}

/**
* Returns the time in UNIX timestamp format.
* @return The time in UNIX timestamp format.
*/
unsigned long getUNIXTimestamp() {
// Simple conversion to UNIX timestamp, not accounting for leap years or time zones
unsigned long timestamp = second + minute*60 + hour*3600 + day*86400 + (month-1)*2629743 + (year-1970)*31556926;
return timestamp;
struct tm t =
{
0 /* tm_sec */,
0 /* tm_min */,
0 /* tm_hour */,
0 /* tm_mday */,
0 /* tm_mon */,
0 /* tm_year */,
0 /* tm_wday */,
0 /* tm_yday */,
0 /* tm_isdst */
};
t.tm_mon = month - 1;
t.tm_mday = day;
t.tm_year = year - 1900;
t.tm_hour = hour;
t.tm_min = minute;
t.tm_sec = second;
t.tm_isdst = -1;

return mktime(&t);
}

/**
Expand Down
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