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silicon errata issue 3 & 4 workaround #68

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silicon errata issue 3 & 4 workaround #68

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5 changes: 3 additions & 2 deletions src/MCP7940.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -69,7 +69,7 @@ DateTime::DateTime(uint32_t t) {
t /= 60;
mm = t % 60;
t /= 60;
hh = t % 24;
hh = t % 24;
uint16_t days = t / 24;
uint8_t leap;
for (yOff = 0;; ++yOff) {
Expand Down Expand Up @@ -437,10 +437,11 @@ void MCP7940_Class::adjust(const DateTime& dt) {
I2C_write(MCP7940_RTCMIN, int2bcd(dt.minute()));
I2C_write(MCP7940_RTCHOUR, int2bcd(dt.hour()));
weekdayWrite(dt.dayOfTheWeek()); // Update the weekday
I2C_write(MCP7940_RTCDATE, int2bcd(dt.day())); // Write the day of month
I2C_write(MCP7940_RTCMTH, int2bcd(dt.month())); // Month, ignore R/O leapyear bit
I2C_write(MCP7940_RTCDATE, int2bcd(dt.day())); // Write the day of month
I2C_write(MCP7940_RTCYEAR, int2bcd(dt.year() - 2000)); // Write the year
deviceStart(); // Restart the oscillator
weekdayWrite(dt.dayOfTheWeek()); // Silicon errata issue 4
_SetUnixTime = dt.unixtime(); // Store time of last change
} // of method adjust
uint8_t MCP7940_Class::weekdayRead() const {
Expand Down