WIP: TimeManager

host/host_central_mast/lib/TimeManager/NTPException.hpp

+//
+// Created by zoe on 12/19/22.
+//
+
+#ifndef HOST_CENTRAL_MAST_NTPEXCEPTION_HPP
+#define HOST_CENTRAL_MAST_NTPEXCEPTION_HPP
+
+#include <exception>
+#include <string>
+
+class NTPException : public std::exception {
+public:
+    explicit NTPException(const std::string &message) : message(message) {}
+
+    const char *what() const noexcept override {
+        return message.c_str();
+    }
+
+private:
+    std::string message;
+};
+
+#endif //HOST_CENTRAL_MAST_NTPEXCEPTION_HPP

host/host_central_mast/lib/TimeManager/StringToTimeConversionException.hpp

+//
+// Created by zoe on 12/19/22.
+//
+
+#ifndef HOST_CENTRAL_MAST_STRINGTOTIMECONVERSIONEXCEPTION_HPP
+#define HOST_CENTRAL_MAST_STRINGTOTIMECONVERSIONEXCEPTION_HPP
+
+#include <exception>
+#include <string>
+#include "TimeManager.h"
+
+class StringToTimeConversionException : public std::exception {
+public:
+    explicit StringToTimeConversionException(const std::string &message) : message(message) {}
+
+    const char *what() const noexcept override {
+        esp_log_write(ESP_LOG_ERROR, "TimeManager", "Error converting time to epoch: %s",
+                      message.c_str());
+        return message.c_str();
+    }
+
+private:
+    std::string message;
+};
+
+#endif //HOST_CENTRAL_MAST_STRINGTOTIMECONVERSIONEXCEPTION_HPP

host/host_central_mast/lib/TimeManager/TimeManager.cpp

+//
+// Created by zoe on 12/19/22.
+//
+
+#include "TimeManager.h"
+
+
+TimeManager::TimeManager(TinyGsmSim7000 &modem) : modem(modem) {
+
+}
+
+void TimeManager::syncNTP(const std::string &ntpServer) {
+    esp_log_write(ESP_LOG_DEBUG, TAG, "NTP Server Syncing...\n");
+
+    auto error = modem.NTPServerSync(ntpServer.c_str(), timeZone);
+
+    /**
+      According to TinGsmNTP.tpp, the error codes are:
+      case 1: "Network time synchronization is successful";
+      case 61: "Network error";
+      case 62: "DNS resolution error";
+      case 63: "Connection error";
+      case 64: "Service response error";
+      case 65: "Service response timeout";
+      default: "Unknown error: " + String(error);
+     */
+    if (error != 1) {
+        throw NTPException(modem.ShowNTPError(error).c_str());
+    } else {
+        esp_log_write(ESP_LOG_DEBUG, TAG, "NTP: %s", modem.ShowNTPError(error).c_str());
+    }
+}
+
+time_t TimeManager::timeToUnixEpochSeconds(const std::string &time) {
+    //	22/10/27,10:16:20+00
+    struct tm tm{};
+    time_t dateInEpoch = 0;
+
+    std::stringstream stringStream(time);
+
+    try {
+        stringStream >> std::get_time(&tm, "%y/%m/%d,%H:%M:%S%z");
+    } catch (std::exception &e) {
+        throw StringToTimeConversionException(("Error converting time to epoch %s", e.what()));
+    }
+
+    return dateInEpoch;
+}
+
+void TimeManager::writeModemTimeToRTC() {
+    auto gsmDateTimeString = modem.getGSMDateTime(DATE_FULL);
+    esp_log_write(ESP_LOG_DEBUG, TAG, "GSM DateTime: %s\n", gsmDateTimeString.c_str());
+    time_t time = timeToUnixEpochSeconds(gsmDateTimeString.c_str());
+
+    rtc.setTime(time);
+    esp_log_write(ESP_LOG_INFO, TAG, "Time set to EPOCH: %s\n",
+                  String(rtc.getEpoch()).c_str());
+}

host/host_central_mast/lib/TimeManager/TimeManager.h

+//
+// Created by zoe on 12/19/22.
+//
+
+#ifndef HOST_CENTRAL_MAST_TIMEMANAGER_H
+#define HOST_CENTRAL_MAST_TIMEMANAGER_H
+
+#define TINY_GSM_MODEM_SIM7000
+
+#include <TinyGsmClientSIM7000.h>
+#include <string>
+#include "NTPException.hpp"
+#include "StringToTimeConversionException.hpp"
+#include "ESP32Time.h"
+#include <iomanip>
+
+class TimeManager {
+public:
+    explicit TimeManager(TinyGsmSim7000 &modem);
+
+private:
+    constexpr static char *TAG = "GSM";
+    ESP32Time rtc;
+    int timeZone = 0;
+
+    // I would like this to be a const reference but the functions used by the modem are not const
+    TinyGsmSim7000 &modem;
+
+    // sync ntp
+    void syncNTP(const std::string &ntpServer = "time1.uibk.ac.at");
+
+    // convert time to unix epoch seconds
+    time_t timeToUnixEpochSeconds(const std::string &time);
+
+    // write modem time to rtc
+    void writeModemTimeToRTC();
+};
+
+
+#endif //HOST_CENTRAL_MAST_TIMEMANAGER_H

host/host_central_mast/platformio.ini

@@ -13,6 +13,7 @@ platform = espressif32
 board = esp-wrover-kit
 framework = arduino
 monitor_speed = 115200
+lib_ldf_mode = deep
 monitor_port = /dev/ttyACM0
 upload_port = /dev/ttyACM0
 build_flags =