le_rtc_interface.h

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    1 
    2 
    3 /*
    4  * ====================== WARNING ======================
    5  *
    6  * THE CONTENTS OF THIS FILE HAVE BEEN AUTO-GENERATED.
    7  * DO NOT MODIFY IN ANY WAY.
    8  *
    9  * ====================== WARNING ======================
   10  */
   11 
   12 /**
   13  * @page c_rtc User Timebase
   14  *
   15  * @ref le_rtc_interface.h "API Reference" <br>
   16  * @ref howToSetUserTimebase how-to
   17  * <HR>
   18  *
   19  * This API provides definitions to read and set the @e user timebase for a target's real time clock (RTC).
   20  *
   21  * Usually, the time daemon automatically updates the system time (i.e., gets time value
   22  * when calling le_clk_GetAbsoluteTime() or using Linux @c date command). In some cases, the RTC
   23  * time value may require a user timebase value based on other domains (e.g., GPS) to offset
   24  * differences between the battery-powered RTC and the system time.
   25  *
   26  * If you're synchronizng with cellular network time only, the time daemon will update the
   27  * system time (the time you get when calling le_clk_GetAbsoluteTime() or using linux 'date'
   28  * command) automatically.
   29  *
   30  * @section c_rtc_disableDaemon Disable Time Daemon
   31  *
   32  * If you need to set the system time from a saved user timebase value, first disable the time
   33  * daemon by commenting out the
   34  * @c TIME_SERVICES="qcom_time" line in @c /etc/time_service.conf to prevent the system time from being
   35  * updated if the modem receives a new time from a cellular network.
   36  *
   37  * @section c_rtc_getSet Get/Set Time Value
   38  *
   39  * You use le_rtc_GetUserTime() to read the current RTC time, and le_rtc_SetUserTime()
   40  * to set the user timebase adjustment (plus/minus in milliseconds).
   41  *
   42  * The time stored in the user timebase is incremented on a millisecond basis;
   43  * Unix time is incremented by the second. When storing Unix time in the user timebase, it
   44  * must be multiplied by 1000, and must be divided by 1000 when retrieved.
   45  *
   46  * Typically, it's sufficient to use Unix epoch time x 1000 as the time base.
   47  *
   48  * <HR>
   49  *
   50  * Copyright (C) Sierra Wireless Inc.
   51  */
   52 /**
   53  * @file le_rtc_interface.h
   54  *
   55  * Legato @ref c_rtc include file.
   56  *
   57  * Copyright (C) Sierra Wireless Inc.
   58  */
   59 
   60 #ifndef LE_RTC_INTERFACE_H_INCLUDE_GUARD
   61 #define LE_RTC_INTERFACE_H_INCLUDE_GUARD
   62 
   63 
   64 #include "legato.h"
   65 
   66 // Internal includes for this interface
   67 #include "le_rtc_common.h"
   68 //--------------------------------------------------------------------------------------------------
   69 /**
   70  * Type for handler called when a server disconnects.
   71  */
   72 //--------------------------------------------------------------------------------------------------
   73 typedef void (*le_rtc_DisconnectHandler_t)(void *);
   74 
   75 //--------------------------------------------------------------------------------------------------
   76 /**
   77  *
   78  * Connect the current client thread to the service providing this API. Block until the service is
   79  * available.
   80  *
   81  * For each thread that wants to use this API, either ConnectService or TryConnectService must be
   82  * called before any other functions in this API.  Normally, ConnectService is automatically called
   83  * for the main thread, but not for any other thread. For details, see @ref apiFilesC_client.
   84  *
   85  * This function is created automatically.
   86  */
   87 //--------------------------------------------------------------------------------------------------
   88 void le_rtc_ConnectService
   89 (
   90     void
   91 );
   92 
   93 //--------------------------------------------------------------------------------------------------
   94 /**
   95  *
   96  * Try to connect the current client thread to the service providing this API. Return with an error
   97  * if the service is not available.
   98  *
   99  * For each thread that wants to use this API, either ConnectService or TryConnectService must be
  100  * called before any other functions in this API.  Normally, ConnectService is automatically called
  101  * for the main thread, but not for any other thread. For details, see @ref apiFilesC_client.
  102  *
  103  * This function is created automatically.
  104  *
  105  * @return
  106  *  - LE_OK if the client connected successfully to the service.
  107  *  - LE_UNAVAILABLE if the server is not currently offering the service to which the client is
  108  *    bound.
  109  *  - LE_NOT_PERMITTED if the client interface is not bound to any service (doesn't have a binding).
  110  *  - LE_COMM_ERROR if the Service Directory cannot be reached.
  111  */
  112 //--------------------------------------------------------------------------------------------------
  113 le_result_t le_rtc_TryConnectService
  114 (
  115     void
  116 );
  117 
  118 //--------------------------------------------------------------------------------------------------
  119 /**
  120  * Set handler called when server disconnection is detected.
  121  *
  122  * When a server connection is lost, call this handler then exit with LE_FATAL.  If a program wants
  123  * to continue without exiting, it should call longjmp() from inside the handler.
  124  */
  125 //--------------------------------------------------------------------------------------------------
  126 LE_FULL_API void le_rtc_SetServerDisconnectHandler
  127 (
  128     le_rtc_DisconnectHandler_t disconnectHandler,
  129     void *contextPtr
  130 );
  131 
  132 //--------------------------------------------------------------------------------------------------
  133 /**
  134  *
  135  * Disconnect the current client thread from the service providing this API.
  136  *
  137  * Normally, this function doesn't need to be called. After this function is called, there's no
  138  * longer a connection to the service, and the functions in this API can't be used. For details, see
  139  * @ref apiFilesC_client.
  140  *
  141  * This function is created automatically.
  142  */
  143 //--------------------------------------------------------------------------------------------------
  144 void le_rtc_DisconnectService
  145 (
  146     void
  147 );
  148 
  149 
  150 //--------------------------------------------------------------------------------------------------
  151 /**
  152  * Get the current time from the RTC
  153  *
  154  * @return
  155  *      - LE_OK            Function succeeded.
  156  *      - LE_FAULT         Function failed.
  157  */
  158 //--------------------------------------------------------------------------------------------------
  159 le_result_t le_rtc_GetUserTime
  160 (
  161     uint64_t* millisecondsPastGpsEpochPtr
  162         ///< [OUT]
  163 );
  164 
  165 //--------------------------------------------------------------------------------------------------
  166 /**
  167  * Set the RTC with the given time string
  168  *
  169  * @return
  170  *      - LE_OK            Function succeeded.
  171  *      - LE_FAULT         Function failed.
  172  */
  173 //--------------------------------------------------------------------------------------------------
  174 le_result_t le_rtc_SetUserTime
  175 (
  176     uint64_t millisecondsPastGpsEpoch
  177         ///< [IN]
  178 );
  179 
  180 #endif // LE_RTC_INTERFACE_H_INCLUDE_GUARD
le_rtc_SetServerDisconnectHandler
LE_FULL_API void le_rtc_SetServerDisconnectHandler(le_rtc_DisconnectHandler_t disconnectHandler, void *contextPtr)


le_result_t
le_result_t
Definition: le_basics.h:35


le_rtc_ConnectService
void le_rtc_ConnectService(void)


LE_FULL_API
#define LE_FULL_API
Definition: le_apiFeatures.h:40


le_rtc_SetUserTime
le_result_t le_rtc_SetUserTime(uint64_t millisecondsPastGpsEpoch)


le_rtc_GetUserTime
le_result_t le_rtc_GetUserTime(uint64_t *millisecondsPastGpsEpochPtr)


le_rtc_DisconnectService
void le_rtc_DisconnectService(void)


le_rtc_TryConnectService
le_result_t le_rtc_TryConnectService(void)


le_rtc_DisconnectHandler_t
void(* le_rtc_DisconnectHandler_t)(void *)
Definition: le_rtc_interface.h:73