93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
/**
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* @file TinyGsmNTP.tpp
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* @author Volodymyr Shymanskyy
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* @license LGPL-3.0
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* @copyright Copyright (c) 2016 Volodymyr Shymanskyy
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* @date Nov 2016
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*/
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#ifndef SRC_TINYGSMNTP_H_
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#define SRC_TINYGSMNTP_H_
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#include "TinyGsmCommon.h"
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#define TINY_GSM_MODEM_HAS_NTP
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template <class modemType>
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class TinyGsmNTP {
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public:
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/*
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* NTP server functions
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*/
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public:
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bool TinyGsmIsValidNumber(String str) {
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if (!(str.charAt(0) == '+' || str.charAt(0) == '-' ||
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isDigit(str.charAt(0))))
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return false;
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for (byte i = 1; i < str.length(); i++) {
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if (!(isDigit(str.charAt(i)) || str.charAt(i) == '.')) { return false; }
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}
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return true;
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}
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byte NTPServerSync(String server = "pool.ntp.org", byte TimeZone = 3) {
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return thisModem().NTPServerSyncImpl(server, TimeZone);
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}
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String ShowNTPError(byte error) {
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return thisModem().ShowNTPErrorImpl(error);
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}
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/*
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* CRTP Helper
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*/
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protected:
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inline const modemType& thisModem() const {
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return static_cast<const modemType&>(*this);
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}
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inline modemType& thisModem() {
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return static_cast<modemType&>(*this);
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}
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/*
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* NTP server functions
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*/
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protected:
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byte NTPServerSyncImpl(String server = "pool.ntp.org", byte TimeZone = 3) {
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// Set GPRS bearer profile to associate with NTP sync
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// this may fail, it's not supported by all modules
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thisModem().sendAT(GF("+CNTPCID=1"));
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thisModem().waitResponse(10000L);
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// Set NTP server and timezone
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thisModem().sendAT(GF("+CNTP=\""), server, "\",", String(TimeZone));
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if (thisModem().waitResponse(10000L) != 1) { return -1; }
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// Request network synchronization
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thisModem().sendAT(GF("+CNTP"));
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if (thisModem().waitResponse(10000L, GF("+CNTP:"))) {
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String result = thisModem().stream.readStringUntil('\n');
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result.trim();
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if (TinyGsmIsValidNumber(result)) { return result.toInt(); }
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} else {
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return -1;
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}
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return -1;
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}
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String ShowNTPErrorImpl(byte error) {
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switch (error) {
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case 1: return "Network time synchronization is successful";
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case 61: return "Network error";
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case 62: return "DNS resolution error";
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case 63: return "Connection error";
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case 64: return "Service response error";
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case 65: return "Service response timeout";
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default: return "Unknown error: " + String(error);
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}
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}
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};
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#endif // SRC_TINYGSMNTP_H_
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