RTClib error on simulate #522
Description
When trying to help an OP with a problem in code using RTC, (RTClib.h),
I used Wokwi to simulate the code.
To test how it would behave when the date changes, I defined
the day as the last of the month:
I used "rtc.adjust(DateTime(2023, 5, 31, 12, 59, 40)); "
But the day appeared in the serial as the 3rd. "3/5/2023"
I tried:
"rtc.adjust(DateTime(2023, 5, 30, 12, 59, 40)); "
The day appeared in the serial as day 2. "2/5/2023"
"rtc.adjust(DateTime(2023, 5, 29, 12, 59, 40)); "
The day appeared in the serial as day 1. "1/5/2023"
But with "rtc.adjust(DateTime(2023, 5, 28, 12, 59, 40)); "
The day appeared on the serial as the 28th. "28/5/2023"
And this occurs with any month I select.
Am I doing something wrong, are there problems with my PC or is there a "bug" on the Wokwi website?
Thank you all.
Simulation link:
Error_RTC - Wokwi Arduino and ESP32 Simulator 1
Run IoT and embedded projects in your browser: ESP32, Arduino, Pi Pico, and more. No installation required!
To make it easier, I simplified the code in the simulation.
#include "RTClib.h"
RTC_DS1307 rtc;
//-----------------------------------------------------------------------------
void setup () {
Serial.begin(115200);
if (! rtc.begin()) {
Serial.println("DS1307 not found");
while (1);
}
rtc.adjust(DateTime(2023, 5, 31, 12, 59, 40)); //(year), (month), (day), (hour), (minute), (second)
delay(100);
}
//-----------------------------------------------------------------------
void loop () {
DateTime now = rtc.now();
Serial.print(now.day());
Serial.print('/');
Serial.print(now.month(), DEC);
Serial.print('/');
Serial.println(now.year());
delay(2000);
}