WLED/wled00/wled10_ntp.ino

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/*
* Acquires time from NTP server
*/
TimeChangeRule UTCr = {Last, Sun, Mar, 1, 0}; // UTC
Timezone tzUTC(UTCr, UTCr);
TimeChangeRule BST = {Last, Sun, Mar, 1, 60}; // British Summer Time
TimeChangeRule GMT = {Last, Sun, Oct, 2, 0}; // Standard Time
Timezone tzUK(BST, GMT);
TimeChangeRule CEST = {Last, Sun, Mar, 2, 120}; //Central European Summer Time
TimeChangeRule CET = {Last, Sun, Oct, 3, 60}; //Central European Standard Time
Timezone tzEUCentral(CEST, CET);
TimeChangeRule EEST = {Last, Sun, Mar, 3, 180}; //Central European Summer Time
TimeChangeRule EET = {Last, Sun, Oct, 4, 120}; //Central European Standard Time
Timezone tzEUEastern(EEST, EET);
TimeChangeRule EDT = {Second, Sun, Mar, 2, -240 }; //Daylight time = UTC - 4 hours
TimeChangeRule EST = {First, Sun, Nov, 2, -300 }; //Standard time = UTC - 5 hours
Timezone tzUSEastern(EDT, EST);
TimeChangeRule CDT = {Second, Sun, Mar, 2, -300 }; //Daylight time = UTC - 5 hours
TimeChangeRule CST = {First, Sun, Nov, 2, -360 }; //Standard time = UTC - 6 hours
Timezone tzUSCentral(CDT, CST);
TimeChangeRule MDT = {Second, Sun, Mar, 2, -360 }; //Daylight time = UTC - 6 hours
TimeChangeRule MST = {First, Sun, Nov, 2, -420 }; //Standard time = UTC - 7 hours
Timezone tzUSMountain(MDT, MST);
Timezone tzUSArizona(MST, MST); //Mountain without DST
TimeChangeRule PDT = {Second, Sun, Mar, 2, -420 }; //Daylight time = UTC - 7 hours
TimeChangeRule PST = {First, Sun, Nov, 2, -480 }; //Standard time = UTC - 8 hours
Timezone tzUSPacific(PDT, PST);
TimeChangeRule ChST = {Last, Sun, Mar, 1, 480}; // China Standard Time = UTC + 8 hours
Timezone tzChina(ChST, ChST);
TimeChangeRule JST = {Last, Sun, Mar, 1, 540}; // Japan Standard Time = UTC + 9 hours
Timezone tzJapan(JST, JST);
TimeChangeRule AEDT = {Second, Sun, Oct, 2, 660 }; //Daylight time = UTC + 11 hours
TimeChangeRule AEST = {First, Sun, Apr, 3, 600 }; //Standard time = UTC + 10 hours
Timezone tzAUEastern(AEDT, AEST);
TimeChangeRule NZDT = {Second, Sun, Sep, 2, 780 }; //Daylight time = UTC + 13 hours
TimeChangeRule NZST = {First, Sun, Apr, 3, 720 }; //Standard time = UTC + 12 hours
Timezone tzNZ(NZDT, NZST);
TimeChangeRule NKST = {Last, Sun, Mar, 1, 510}; //Pyongyang Time = UTC + 8.5 hours
Timezone tzNK(NKST, NKST);
Timezone* timezones[] = {&tzUTC, &tzUK, &tzEUCentral, &tzEUEastern, &tzUSEastern, &tzUSCentral, &tzUSMountain, &tzUSArizona, &tzUSPacific, &tzChina, &tzJapan, &tzAUEastern, &tzNZ, &tzNK};
void handleNetworkTime()
{
if (ntpEnabled && ntpConnected && millis() - ntpLastSyncTime > 50000000L && WiFi.status() == WL_CONNECTED)
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{
if (millis() - ntpPacketSentTime > 10000)
{
sendNTPPacket();
ntpPacketSentTime = millis();
}
if (checkNTPResponse())
{
ntpLastSyncTime = millis();
}
}
}
void sendNTPPacket()
{
const char* ntpsrv = ntpServerName.c_str();
WiFi.hostByName(ntpsrv, ntpServerIP);
DEBUG_PRINTLN("send NTP packet");
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memset(ntpPacketBuffer, 0, NTP_PACKET_SIZE);
ntpPacketBuffer[0] = 0b11100011; // LI, Version, Mode
ntpPacketBuffer[1] = 0; // Stratum, or type of clock
ntpPacketBuffer[2] = 6; // Polling Interval
ntpPacketBuffer[3] = 0xEC; // Peer Clock Precision
// 8 bytes of zero for Root Delay & Root Dispersion
ntpPacketBuffer[12] = 49;
ntpPacketBuffer[13] = 0x4E;
ntpPacketBuffer[14] = 49;
ntpPacketBuffer[15] = 52;
ntpUdp.beginPacket(ntpServerIP, 123); //NTP requests are to port 123
ntpUdp.write(ntpPacketBuffer, NTP_PACKET_SIZE);
ntpUdp.endPacket();
}
bool checkNTPResponse()
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{
int cb = ntpUdp.parsePacket();
if (cb) {
DEBUG_PRINT("packet received, length=");
DEBUG_PRINTLN(cb);
ntpUdp.read(ntpPacketBuffer, NTP_PACKET_SIZE); // read the packet into the buffer
unsigned long highWord = word(ntpPacketBuffer[40], ntpPacketBuffer[41]);
unsigned long lowWord = word(ntpPacketBuffer[42], ntpPacketBuffer[43]);
if (highWord == 0 && lowWord == 0) return false;
unsigned long secsSince1900 = highWord << 16 | lowWord;
DEBUG_PRINT("Unix time = ");
unsigned long epoch = secsSince1900 - 2208988799UL; //subtract 70 years -1sec (on avg. more precision)
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setTime(epoch);
DEBUG_PRINTLN(epoch);
if (countdownTime - now() > 0) countdownOverTriggered = false;
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return true;
}
return false;
}
void updateLocalTime()
{
unsigned long tmc = now()+ utcOffsetSecs;
local = timezones[currentTimezone]->toLocal(tmc);
}
String getTimeString()
{
updateLocalTime();
String ret = monthStr(month(local));
ret = ret + " ";
ret = ret + day(local);
ret = ret + " ";
ret = ret + year(local);
ret = ret + ", ";
ret += (useAMPM)? hour(local)%12: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);
if (useAMPM)
{
ret += (hour(local) > 11)? " PM":" AM";
}
return ret;
}
void setCountdown()
{
countdownTime = timezones[currentTimezone]->toUTC(getUnixTime(countdownHour, countdownMin, countdownSec, countdownDay, countdownMonth, countdownYear));
if (countdownTime - now() > 0) countdownOverTriggered = false;
}
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//returns true if countdown just over
bool checkCountdown()
{
long diff = countdownTime - now();
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local = abs(diff);
if (diff <0 && !countdownOverTriggered)
{
if (macroCountdown != 0) applyMacro(macroCountdown);
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countdownOverTriggered = true;
return true;
}
return false;
}