Ciao
è un giorno che provo...
Arduino nano pin 4 a SDA
pin 5 a SCL
gnd a gnd
3.3 a VCC
led Power ok
ho provato diversi esempi dalle librerie DS3231 e MD_DS3231 ma non ottengo nulla sul monitor seriale.
con questo esempio vedo solo il valore 20
/*
DS3231_test.pde
Eric Ayars
4/11
Test/demo of read routines for a DS3231 RTC.
Turn on the serial monitor after loading this to check if things are
working as they should.
*/
#include <DS3231.h>
#include <Wire.h>
DS3231 Clock;
bool Century=false;
bool h12;
bool PM;
byte ADay, AHour, AMinute, ASecond, ABits;
bool ADy, A12h, Apm;
void setup() {
// Start the I2C interface
Wire.begin();
// Start the serial interface
Serial.begin(9600);
}
void loop() {
// send what's going on to the serial monitor.
// Start with the year
Serial.print("2");
if (Century) { // Won't need this for 89 years.
Serial.print("1");
} else {
Serial.print("0");
}
Serial.print(Clock.getYear(), DEC);
Serial.print(' ');
// then the month
Serial.print(Clock.getMonth(Century), DEC);
Serial.print(' ');
// then the date
Serial.print(Clock.getDate(), DEC);
Serial.print(' ');
// and the day of the week
Serial.print(Clock.getDoW(), DEC);
Serial.print(' ');
// Finally the hour, minute, and second
Serial.print(Clock.getHour(h12, PM), DEC);
Serial.print(' ');
Serial.print(Clock.getMinute(), DEC);
Serial.print(' ');
Serial.print(Clock.getSecond(), DEC);
// Add AM/PM indicator
if (h12) {
if (PM) {
Serial.print(" PM ");
} else {
Serial.print(" AM ");
}
} else {
Serial.print(" 24h ");
}
// Display the temperature
Serial.print("T=");
Serial.print(Clock.getTemperature(), 2);
// Tell whether the time is (likely to be) valid
if (Clock.oscillatorCheck()) {
Serial.print(" O+");
} else {
Serial.print(" O-");
}
// Indicate whether an alarm went off
if (Clock.checkIfAlarm(1)) {
Serial.print(" A1!");
}
if (Clock.checkIfAlarm(2)) {
Serial.print(" A2!");
}
// New line on display
Serial.print('\n');
// Display Alarm 1 information
Serial.print("Alarm 1: ");
Clock.getA1Time(ADay, AHour, AMinute, ASecond, ABits, ADy, A12h, Apm);
Serial.print(ADay, DEC);
if (ADy) {
Serial.print(" DoW");
} else {
Serial.print(" Date");
}
Serial.print(' ');
Serial.print(AHour, DEC);
Serial.print(' ');
Serial.print(AMinute, DEC);
Serial.print(' ');
Serial.print(ASecond, DEC);
Serial.print(' ');
if (A12h) {
if (Apm) {
Serial.print('pm ');
} else {
Serial.print('am ');
}
}
if (Clock.checkAlarmEnabled(1)) {
Serial.print("enabled");
}
Serial.print('\n');
// Display Alarm 2 information
Serial.print("Alarm 2: ");
Clock.getA2Time(ADay, AHour, AMinute, ABits, ADy, A12h, Apm);
Serial.print(ADay, DEC);
if (ADy) {
Serial.print(" DoW");
} else {
Serial.print(" Date");
}
Serial.print(' ');
Serial.print(AHour, DEC);
Serial.print(' ');
Serial.print(AMinute, DEC);
Serial.print(' ');
if (A12h) {
if (Apm) {
Serial.print('pm');
} else {
Serial.print('am');
}
}
if (Clock.checkAlarmEnabled(2)) {
Serial.print("enabled");
}
// display alarm bits
Serial.print('\nAlarm bits: ');
Serial.print(ABits, BIN);
Serial.print('\n');
Serial.print('\n');
delay(1000);
}
arrivato guasto ?