I am using a esp32 with a ds3231 and relays. I want to trigger these relays by time. Run one relay for 6 hours and run another for 6 hours. Like 1 -6 om one relay and 7-16 on the other. I want to see the time they run per day and week month. So right now I got to get the code working and then upload to the community. Thanks for the help
`#include "Wire.h"
#define SDA_PIN 21
#define SCL_PIN 22
#define DS3231_I2C_ADDRESS 0x68
const int relay1 = 2; //Digital pin that the Relay is connected
const int relay2 = 5; //Digital pin that the Relay is connected
const int OnHour1 = 12;
const int OnMin1 = 25;
const int OffHour1 = 12;
const int OffMin1 = 25;
// Convert normal decimal numbers to binary coded decimal
byte decToBcd(byte val)
{
return ( (val / 10 * 16) + (val % 10) );
}
// Convert binary coded decimal to normal decimal numbers
byte bcdToDec(byte val)
{
return ( (val / 16 * 10) + (val % 16) );
}
void setup()
{
Wire.begin();
Serial.begin(9600);
pinMode(relay1, OUTPUT);
pinMode(relay2, OUTPUT);
digitalWrite(relay1, LOW); //OFF
digitalWrite(relay2, LOW); //OFF
// set the initial time here:
//DS3231 seconds, minutes, hours, day, date, month, year
//setDS3231time(30,30,18,4,22,11,17);
}
void setDS3231time(byte second, byte minute, byte hour, byte dayOfWeek, byte
dayOfMonth, byte month, byte year)
{
// sets time and date data to DS3231
Wire.beginTransmission(DS3231_I2C_ADDRESS);
Wire.write(0); // set next input to start at the seconds register
Wire.write(decToBcd(second)); // set seconds
Wire.write(decToBcd(minute)); // set minutes
Wire.write(decToBcd(hour)); // set hours
Wire.write(decToBcd(dayOfWeek)); // set day of week (1=Sunday, 7=Saturday)
Wire.write(decToBcd(dayOfMonth)); // set date (1 to 31)
Wire.write(decToBcd(month)); // set month
Wire.write(decToBcd(year)); // set year (0 to 99)
Wire.endTransmission();
}
void readDS3231time(byte *second,
byte *minute,
byte *hour,
byte *dayOfWeek,
byte *dayOfMonth,
byte *month,
byte *year)
{
Wire.beginTransmission(DS3231_I2C_ADDRESS);
Wire.write(0); // set DS3231 register pointer to 00h
Wire.endTransmission();
Wire.requestFrom(DS3231_I2C_ADDRESS, 7);
// request seven bytes of data from DS3231 starting from register 00h
*second = bcdToDec(Wire.read() & 0x7f);
*minute = bcdToDec(Wire.read());
*hour = bcdToDec(Wire.read() & 0x3f);
*dayOfWeek = bcdToDec(Wire.read());
*dayOfMonth = bcdToDec(Wire.read());
*month = bcdToDec(Wire.read());
*year = bcdToDec(Wire.read());
}
void displayTime()
{
byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
// retrieve data from DS3231
readDS3231time(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month,
&year);
// send it to the serial monitor
Serial.print(hour, DEC);
// convert the byte variable to a decimal number when displayed
Serial.print(":");
if (minute < 10)
{
Serial.print("0");
}
Serial.print(minute, DEC);
Serial.print(":");
if (second < 10)
{
Serial.print("0");
}
Serial.print(second, DEC);
Serial.print(" ");
Serial.print(dayOfMonth, DEC);
Serial.print("/");
Serial.print(month, DEC);
Serial.print("/");
Serial.print(year, DEC);
Serial.print(" Day of week: ");
switch (dayOfWeek) {
case 1:
Serial.println("Sunday");
break;
case 2:
Serial.println("Monday");
break;
case 3:
Serial.println("Tuesday");
break;
case 4:
Serial.println("Wednesday");
break;
case 5:
Serial.println("Thursday");
break;
case 6:
Serial.println("Friday");
break;
case 7:
Serial.println("Saturday");
break;
}
}
void loop()
{
displayTime(); // display the real-time clock data on the Serial Monitor,
delay(1000); // every second
if (readDS3231time (byte hour) == Onhour1 && (readDS3231time (byte min) == OnMin1)
{
digitalWrite (Relay1, HIGH);
}
else if (readDS3231time byte hour) == OffHour1 && (readDS3231time byte min == OffMin)
{
digitalWrite (Relay1, HIGH);
}
}
)
)
)`