怎么使用PIC32MZ的RTCC设置

亲爱的社区，我想阅读时间和日历与PIC32 MZ2048 EFM144从外部RTC时钟的32.76kHz与MPLAB和谐。我可以设置日历的默认值（例如170101= 2017年1月1日和000000＝00小时00分钟），但是当我运行程序时，RTCC寄存器（RTCtime）从不更新。我发现RTCLKON状态位永远不会设置为1，所以我相信这就是为什么它不运行的原因。当我选择MPLAB和谐中的LPRC时钟时，RTCTIME更新正确（即使RTCLKON状态仍然是0，这是正确的，根据数据表DS61125F）。我不能发现任何错误与我的外部时钟设置；有什么想法？在我的应用程序中，我使用命令：DrviRTCccSistar（）；/ /启动RTCpAppDATA RTCCTIMECT= DRVYRTTCCY TimeGET（）；



      以下为原文

    Dear community,

I want to read time and calendar with a PIC32MZ2048EFM144 from an external RTC clock of 32.76KHz with MPLAB HARMony. I can set up the default values for the calendar (e.g.170101 = Jan 1st, 2017 and 000000 = 00hr 00min 00sec), but when I run the program, the RTCC registers (RTCTIME) never update.
I found that the RTCCLKON status bit is never set to 1, so I believe this is the reason why it is not running. When I select the LPRC clock in MPLAB Harmony, the RTCTIME updates correctly (even though the RTCCLKON status is still 0, and this is correct according to the datasheet DS61125F).
I can't find anything wrong with my external clock settings; any idea?
My drv_rtcc_static.c initialization:
void DRV_RTCC_Initialize(void)
{
    PLIB_DEVCON_SystemUnlock(DEVCON_ID_0); /* Unlock System */

    /* Initialize RTCC */
    PLIB_RTCC_WriteEnable(RTCC_ID_0); /* Enable writes to RTCC */
    PLIB_RTCC_Disable(RTCC_ID_0); /* Disable clock to RTCC */
    while (PLIB_RTCC_ClockRunningStatus(RTCC_ID_0)); /*Check if clock is disabled */
    PLIB_RTCC_RTCTimeSet(RTCC_ID_0, 0x00000000); /* Set RTCC time */
    PLIB_RTCC_RTCDateSet(RTCC_ID_0, 0x17010100); /* Set RTCC date */
    PLIB_RTCC_AlarmDisable(RTCC_ID_0); /* Disable alarm */
    while (PLIB_RTCC_AlarmSyncStatusGet(RTCC_ID_0)); /* Wait for disable */
    PLIB_RTCC_AlarmTimeSet(RTCC_ID_0, 0x00000500); /* Set RTCC alarm time */
    PLIB_RTCC_AlarmDateSet(RTCC_ID_0, 0x00010100); /* Set RTCC alarm date */
    PLIB_RTCC_AlarmMaskModeSelect(RTCC_ID_0, RTCC_ALARM_ONCE_A_DAY); /* Set RTCC alarm mode */
    PLIB_RTCC_ClockSourceSelect(RTCC_ID_0,RTCC_CLOCK_SOURCE_SOSC); /* Set RTCC clock source (LPRC/SOSC) */
}
In my application, I use the commands:
DRV_RTCC_Start(); // to start the RTCC
appData.RTCCtime = DRV_RTCC_TimeGet();