Added correct handling of leap-years, #23

Zanduino · May 3, 2023 · 23f3f67 · 23f3f67
1 parent 5fe99af
commit 23f3f67
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/DS3231M.cpp b/src/DS3231M.cpp
@@ -23,7 +23,8 @@ static uint16_t date2days(uint16_t y, uint8_t m, uint8_t d) {
  for (uint8_t i = 1; i < m; ++i) {
  days += pgm_read_byte(daysInMonth + i - 1); // Add number of days for each month
  } // for-next each month
- if (m > 2 && y % 4 == 0) {
+ if (m > 2 && (((y % 4 == 0) && (y % 100 != 0)) ||
+ (y % 400 == 0))) {
  ++days; // Deal with leap years
  } // if-then leap year
  return days + 365 * y + (y + 3) / 4 - 1; // Return computed value