90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
void handleNetworkTime()
|
|
{
|
|
if (ntpEnabled && ntpConnected)
|
|
{
|
|
if (ntpSyncNeeded)
|
|
{
|
|
if (ntpPacketSent)
|
|
{
|
|
if (getNtpTime())
|
|
{
|
|
ntpSyncNeeded = false;
|
|
ntpPacketSent = false;
|
|
ntpSyncTime = millis();
|
|
Serial.print("Time: ");
|
|
Serial.println(now());
|
|
} else
|
|
{
|
|
if (millis() - ntpPacketSentTime > ntpRetryMs)
|
|
{
|
|
ntpPacketSent = false; //try new packet
|
|
}
|
|
}
|
|
} else
|
|
{
|
|
WiFi.hostByName(ntpServerName, ntpIp);
|
|
sendNTPpacket();
|
|
ntpPacketSent = true;
|
|
ntpPacketSentTime = millis();
|
|
}
|
|
} else if (millis() - ntpSyncTime > ntpResyncMs)
|
|
{
|
|
ntpSyncNeeded = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool getNtpTime()
|
|
{
|
|
int size = ntpUdp.parsePacket();
|
|
if (size >= 48) {
|
|
ntpUdp.read(ntpBuffer, 48); // read packet into the buffer
|
|
unsigned long secsSince1900;
|
|
// convert four bytes starting at location 40 to a long integer
|
|
secsSince1900 = (unsigned long)ntpBuffer[40] << 24;
|
|
secsSince1900 |= (unsigned long)ntpBuffer[41] << 16;
|
|
secsSince1900 |= (unsigned long)ntpBuffer[42] << 8;
|
|
secsSince1900 |= (unsigned long)ntpBuffer[43];
|
|
setTime(secsSince1900 - 2208988800UL + (millis() - ntpPacketSentTime)/2000); //naive approach to improve accuracy, utc
|
|
return true;
|
|
}
|
|
return false; //unable to get the time
|
|
}
|
|
|
|
void sendNTPpacket()
|
|
{
|
|
Serial.println("Sending NTP packet");
|
|
memset(ntpBuffer, 0, 48);
|
|
ntpBuffer[0] = 0b11100011; // LI, Version, Mode
|
|
ntpBuffer[1] = 0; // Stratum, or type of clock
|
|
ntpBuffer[2] = 6; // Polling Interval
|
|
ntpBuffer[3] = 0xEC; // Peer Clock Precision
|
|
ntpBuffer[12] = 49;
|
|
ntpBuffer[13] = 0x4E;
|
|
ntpBuffer[14] = 49;
|
|
ntpBuffer[15] = 52;
|
|
ntpUdp.beginPacket(ntpIp, 123); //NTP requests are to port 123
|
|
ntpUdp.write(ntpBuffer, 48);
|
|
ntpUdp.endPacket();
|
|
}
|
|
|
|
String getTimeString()
|
|
{
|
|
local = CE.toLocal(now(), &tcr);
|
|
String ret = monthStr(month(local));
|
|
ret = ret + " ";
|
|
ret = ret + day(local);
|
|
ret = ret + " ";
|
|
ret = ret + year(local);
|
|
ret = ret + ", ";
|
|
ret = ret + hour(local);
|
|
ret = ret + ":";
|
|
if (minute(local) < 10) ret = ret + "0";
|
|
ret = ret + minute(local);
|
|
ret = ret + ":";
|
|
if (second(local) < 10) ret = ret + "0";
|
|
ret = ret + second(local);
|
|
return ret;
|
|
}
|
|
|