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#include "AutoDiscoverRTCClock.h"
#include "RTClib.h"
#include <Melopero_RV3028.h>
static RTC_DS3231 rtc_3231;
static bool ds3231_success = false;
static Melopero_RV3028 rtc_rv3028;
static bool rv3028_success = false;
static RTC_PCF8563 rtc_8563;
static bool rtc_8563_success = false;
#define DS3231_ADDRESS 0x68
#define RV3028_ADDRESS 0x52
#define PCF8563_ADDRESS 0x51
bool AutoDiscoverRTCClock::i2c_probe(TwoWire& wire, uint8_t addr) {
wire.beginTransmission(addr);
uint8_t error = wire.endTransmission();
return (error == 0);
}
void AutoDiscoverRTCClock::begin(TwoWire& wire) {
if (i2c_probe(wire, DS3231_ADDRESS)) {
ds3231_success = rtc_3231.begin(&wire);
}
if (i2c_probe(wire, RV3028_ADDRESS)) {
rtc_rv3028.initI2C(wire);
rtc_rv3028.writeToRegister(0x35, 0x00);
rtc_rv3028.writeToRegister(0x37, 0xB4); // Direct Switching Mode (DSM): when VDD < VBACKUP, switchover occurs from VDD to VBACKUP
rtc_rv3028.set24HourMode(); // Set the device to use the 24hour format (default) instead of the 12 hour format
rv3028_success = true;
}
if(i2c_probe(wire,PCF8563_ADDRESS)){
rtc_8563_success = rtc_8563.begin(&wire);
}
}
uint32_t AutoDiscoverRTCClock::getCurrentTime() {
if (ds3231_success) {
return rtc_3231.now().unixtime();
}
if (rv3028_success) {
return DateTime(
rtc_rv3028.getYear(),
rtc_rv3028.getMonth(),
rtc_rv3028.getDate(),
rtc_rv3028.getHour(),
rtc_rv3028.getMinute(),
rtc_rv3028.getSecond()
).unixtime();
}
if(rtc_8563_success){
return rtc_8563.now().unixtime();
}
return _fallback->getCurrentTime();
}
void AutoDiscoverRTCClock::setCurrentTime(uint32_t time) {
if (ds3231_success) {
rtc_3231.adjust(DateTime(time));
} else if (rv3028_success) {
auto dt = DateTime(time);
uint8_t weekday = (dt.day() + (uint16_t)((2.6 * dt.month()) - 0.2) - (2 * (dt.year() / 100)) + dt.year() + (uint16_t)(dt.year() / 4) + (uint16_t)(dt.year() / 400)) % 7;
rtc_rv3028.setTime(dt.year(), dt.month(), weekday, dt.day(), dt.hour(), dt.minute(), dt.second());
} else if (rtc_8563_success) {
rtc_8563.adjust(DateTime(time));
} else {
_fallback->setCurrentTime(time);
}
}
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