104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
/**
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* @file BlynkSimpleEthernetSSL.h
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* @author Volodymyr Shymanskyy
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* @license This project is released under the MIT License (MIT)
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* @copyright Copyright (c) 2018 Volodymyr Shymanskyy
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* @date Sep 2018
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* @brief
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*
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*/
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#ifndef BlynkSimpleEthernetSSL_h
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#define BlynkSimpleEthernetSSL_h
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#ifndef BLYNK_INFO_CONNECTION
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#define BLYNK_INFO_CONNECTION "W5000"
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#endif
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#include <Ethernet.h>
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#include <EthernetClient.h>
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#include <EthernetUdp.h>
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#include <ArduinoECCX08.h>
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#include <ArduinoBearSSL.h>
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#define BLYNK_USE_SSL
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#include <Adapters/BlynkEthernet.h>
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static EthernetClient _blynkEthernetClient;
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static BearSSLClient _blynkEthernetClientSSL(_blynkEthernetClient);
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static BlynkArduinoClient _blynkTransport(_blynkEthernetClientSSL);
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BlynkEthernet Blynk(_blynkTransport);
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#include <BlynkWidgets.h>
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unsigned long ntpGetTime() {
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static const char timeServer[] = "time.nist.gov";
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const int NTP_PACKET_SIZE = 48; // NTP time stamp is in the first 48 bytes of the message
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byte packetBuffer[NTP_PACKET_SIZE];
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EthernetUDP Udp;
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Udp.begin(8888);
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// set all bytes in the buffer to 0
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memset(packetBuffer, 0, NTP_PACKET_SIZE);
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// Initialize values needed to form NTP request
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// (see URL above for details on the packets)
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packetBuffer[0] = 0b11100011; // LI, Version, Mode
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packetBuffer[1] = 0; // Stratum, or type of clock
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packetBuffer[2] = 6; // Polling Interval
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packetBuffer[3] = 0xEC; // Peer Clock Precision
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// 8 bytes of zero for Root Delay & Root Dispersion
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packetBuffer[12] = 49;
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packetBuffer[13] = 0x4E;
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packetBuffer[14] = 49;
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packetBuffer[15] = 52;
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for (int i=0; i<10; i++)
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{
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// all NTP fields have been given values, now
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// you can send a packet requesting a timestamp:
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Udp.beginPacket(timeServer, 123); // NTP requests are to port 123
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Udp.write(packetBuffer, NTP_PACKET_SIZE);
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Udp.endPacket();
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millis_time_t started = BlynkMillis();
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while (BlynkMillis() - started < 1000)
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{
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delay(100);
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if (Udp.parsePacket()) {
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// We've received a packet, read the data from it
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Udp.read(packetBuffer, NTP_PACKET_SIZE); // read the packet into the buffer
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// the timestamp starts at byte 40 of the received packet and is four bytes,
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// or two words, long. First, extract the two words:
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unsigned long highWord = word(packetBuffer[40], packetBuffer[41]);
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unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]);
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// combine the four bytes (two words) into a long integer
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// this is NTP time (seconds since Jan 1 1900):
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unsigned long secsSince1900 = highWord << 16 | lowWord;
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//Serial.print("Seconds since Jan 1 1900 = ");
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//Serial.println(secsSince1900);
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// Unix time starts on Jan 1 1970. In seconds, that's 2208988800:
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const unsigned long seventyYears = 2208988800UL;
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// subtract seventy years:
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unsigned long epoch = secsSince1900 - seventyYears;
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// print Unix time:
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Serial.print("Unix time = ");
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Serial.println(epoch);
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return epoch;
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}
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}
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Serial.println("Retry NTP");
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}
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Serial.println("NTP failed");
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return 0;
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}
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#endif
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