Virtuabotixrtc.h Arduino Library Access

| Function | Syntax Example | Description | | :--- | :--- | :--- | | | VirtuabotixRTC(int clk, int dat, int rst) | Initializes the library with the three Arduino pins connected to the DS1302's CLK, DAT (I/O), and RST (CE) pins. | | updateTime() | rtc.updateTime(); | Reads the current time from the RTC chip and stores it in the object's internal variables. Must be called before reading time. | | setDS1302Time() | rtc.setDS1302Time(seconds, minutes, hours, dayOfWeek, date, month, year); | Writes a new time/date to the RTC chip. Typically called once during setup. | | Accessing Time | rtc.hours , rtc.minutes , rtc.seconds , rtc.dayofmonth , rtc.month , rtc.year , rtc.dayofweek | After updateTime() , these integer variables hold the current time components. |

While newer chips like the DS1307 or DS3231 utilize the I2C protocol, the DS1302 relies on a simple 3-wire serial interface. The virtuabotixRTC library simplifies communication with this hardware by eliminating the need for complex, low-level register manipulation. Key Benefits

void setup() pinMode(relayPin, OUTPUT);

void loop() // This allows the library to update the internal time variables myRTC.updateTime();

Communicates with the DS1302 using only SCLK (Clock), I/O (Data), and CE (Chip Enable/RST) pins. Easy Time Setting: Includes the setDS1302Time() virtuabotixrtc.h arduino library

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Manages seconds, minutes, hours, day of the week, day of the month, month, and year. Static RAM Access: | Function | Syntax Example | Description |

Once you call myRTC.updateTime(); , the library populates the following public variables that you can use in your code:

Standard wiring for most examples using this library typically connects to the following digital pins on an Arduino Uno: Arduino Project Hub DS1302 Pin Arduino Pin (Typical) Library Parameter SCLK / CLK Basic Usage Example | | setDS1302Time() | rtc

This library natively reads and writes in 24-hour format. If you want to display 12-hour time (AM/PM), you will need to write a simple if (hours > 12) statement in your code to convert it.

: Manages seconds, minutes, and hours (including 24-hour or AM/PM formats).