[enum] Add TxStartStopPointType and helper for string conversion

Signed-off-by: Thomas BRUNEL <thomas.brunel@madic.com>

Author: thomas-brunel

src/ocpp20/chargepoint/ChargePoint20.h

@@ -899,12 +899,16 @@ class ChargePoint20
         if (m_msg_sender && !m_stop_in_progress)
         {
             ocpp::messages::CallResult res = m_msg_sender->call(action, request, response, error, message);
-            if (res != ocpp::messages::CallResult::Ok)
+            if (res == ocpp::messages::CallResult::Delayed)
+            {
+                LOG_INFO << "[" << identifier << "] - " << action << " => Delayed";
+            }
+            else if (res != ocpp::messages::CallResult::Ok)
             {
                 LOG_ERROR << "[" << identifier << "] - " << action << " => "
                           << (res == ocpp::messages::CallResult::Failed ? "Timeout" : "Error");
             }
-            else
+            if (res != ocpp::messages::CallResult::Failed && res != ocpp::messages::CallResult::Delayed)
             {
                 ret = true;
             }

src/ocpp20/types/TxStartStopPointType20.cpp

@@ -0,0 +1,40 @@
+/*
+Copyright (c) 2020 Cedric Jimenez
+This file is part of OpenOCPP.
+
+OpenOCPP is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 2.1 of the License, or
+(at your option) any later version.
+
+OpenOCPP is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with OpenOCPP. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "TxStartStopPointType20.h"
+
+namespace ocpp
+{
+namespace types
+{
+namespace ocpp20
+{
+
+/** @brief Helper to convert a TxStartStopPointType enum to string */
+const EnumToStringFromString<TxStartStopPointType> TxStartStopPointTypeHelper = {
+    {TxStartStopPointType::ParkingBayOccupancy, "ParkingBayOccupancy"},
+    {TxStartStopPointType::EVConnected, "EVConnected"},
+    {TxStartStopPointType::Authorized, "Authorized"},
+    {TxStartStopPointType::PowerPathClosed, "PowerPathClosed"},
+    {TxStartStopPointType::EnergyTransfer, "EnergyTransfer"},
+    {TxStartStopPointType::DataSigned, "DataSigned"},
+};
+
+} // namespace ocpp20
+} // namespace types
+} // namespace ocpp

src/ocpp20/types/TxStartStopPointType20.h

@@ -0,0 +1,88 @@
+/*
+Copyright (c) 2020 Cedric Jimenez
+This file is part of OpenOCPP.
+
+OpenOCPP is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 2.1 of the License, or
+(at your option) any later version.
+
+OpenOCPP is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with OpenOCPP. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef OPENOCPP_OCPP20_TXSTARTSTOPTYPE_H
+#define OPENOCPP_OCPP20_TXSTARTSTOPTYPE_H
+
+#include "EnumToStringFromString.h"
+
+namespace ocpp
+{
+namespace types
+{
+namespace ocpp20
+{
+
+/** @brief Points used to marks the start of a transaction */
+enum class TxStartStopPointType
+{
+    /** @brief An object (probably an EV) is detected in the parking/charging bay. */
+    ParkingBayOccupancy,
+    /**
+     * @brief Both ends of the Charging Cable have been connected
+     * (if this can be detected, else detection of a cable being plugged into
+     * the socket), or for wireless charging:
+     * initial communication between EVSE and EV is established.
+     */
+    EVConnected,
+    /**
+     * @brief Driver or EV has been authorized, this can also be some form of
+     * anonymous authorization like a start button.
+     */
+    Authorized,
+    /**
+     * @brief All preconditions for charging have been met, power can flow. This
+     * event is the logical AND of EVConnected and Authorized and
+     * should be used if a transaction is supposed to start when EV is
+     * connected and authorized. Despite its name, this event is not
+     * related to the state of the power relay.
+     *
+     * @note There may be situations where PowerPathClosed does not
+     * imply that charging starts at that moment, e.g. because of delayed
+     * charging or a battery that is too hot.
+     */
+    PowerPathClosed,
+    /**
+     * @brief Energy is being transferred between EV and EVSE.
+     * @note Energy is not being transferred between EV and EVSE.
+     * This is not recommended to use as a TxStopPoint, because it
+     * will stop the transaction as soon as EV or EVSE (temporarily)
+     * suspend the charging.
+     */
+    EnergyTransfer,
+    /**
+     * @brief The moment when the signed meter value is received from the
+     * fiscal meter, that is used in the TransactionEventRequest with
+     * context = Transaction.Begin and triggerReason = SignedDataReceived.
+     * This TxStartPoint might be applicable when legislation exists that only
+     * allows a billable transaction to start when the first signed meter value
+     * has been received.
+     * @note This condition has no meaning as a TxStopPoint and should not
+     * be used as such.
+     */
+    DataSigned
+};
+
+/** @brief Helper to convert a TxStartPointType enum to string */
+extern const EnumToStringFromString<TxStartStopPointType> TxStartStopPointTypeHelper;
+
+} // namespace ocpp20
+} // namespace types
+} // namespace ocpp
+
+#endif // OPENOCPP_OCPP20_TXSTARTSTOPTYPE_H