[rtl872x] RTC is not remained after waking up from hibernate mode.

[XuGuohui]

Problem

RTC is always reset after waking up from hibernate mode.

Solution

Do not initialize the RTC if device wakes up from hibernate mode.

Steps to Test

See the following test app.

Example App

#include "application.h"

SYSTEM_MODE(MANUAL);

Serial1LogHandler l(115200, LOG_LEVEL_ALL);

static time32_t year, month, day, weekday, hour, minute, second;

void updateTime() {
    year = Time.year();
    month = Time.month();
    day = Time.day();
    weekday = Time.weekday();
    hour = Time.hour();
    minute = Time.minute();
    second = Time.second();
}

STARTUP(updateTime());

void setup() {
    Log.info("%d-%d-%d, %d:%d:%d, %d, test: %ld", year, month, day, hour, minute, second, weekday);

    delay(5s);

    updateTime();
    Log.info("%d-%d-%d, %d:%d:%d, %d, test: %ld", year, month, day, hour, minute, second, weekday);

    System.sleep(SystemSleepConfiguration().mode(SystemSleepMode::HIBERNATE).duration(10s));
}

Sample output:

#0000000617 [system] INFO: Device 0a10aced202194944a04072c started
0000000619 [system] TRACE: Last reset reason: 30 (data: 0x00)
0000000625 [hal] TRACE: Using internal antenna
0000000647 [hal] INFO: rltk_wlan_set_netif_info: 0, 94:94:4a:04:07:2c
0000000850 [hal] INFO: WiFi on
0000001085 [net.lwip_rltk] INFO: promisc_deinit TODO
0000001087 [hal] INFO: WiFi off
0000001698 [system.nm] INFO: State changed: NONE -> DISABLED
0000001700 [system.nm] TRACE: Interface 4 power state: 1
0000001727 [comm] INFO: channel inited
0000001728 [app] INFO: 2000-1-1, 0:2:11, 7
0000006731 [app] INFO: 2000-1-1, 0:2:17, 7
0000006732 [system.sleep] TRACE: Entering system_sleep_ext()
0000006736 [system.sleep] TRACE: Interface 4 is off already
0000006742 [system.sleep] TRACE: Interface 3 is off already

#0000000614 [system] INFO: Device 0a10aced202194944a04072c started
0000000616 [system] TRACE: Last reset reason: 30 (data: 0x00)
0000000622 [hal] TRACE: Using internal antenna
0000000643 [hal] INFO: rltk_wlan_set_netif_info: 0, 94:94:4a:04:07:2c
0000000847 [hal] INFO: WiFi on
0000001081 [net.lwip_rltk] INFO: promisc_deinit TODO
0000001083 [hal] INFO: WiFi off
0000001694 [system.nm] INFO: State changed: NONE -> DISABLED
0000001696 [system.nm] TRACE: Interface 4 power state: 1
0000001723 [comm] INFO: channel inited
0000001724 [app] INFO: 2000-1-1, 0:2:30, 7
0000006727 [app] INFO: 2000-1-1, 0:2:36, 7
0000006728 [system.sleep] TRACE: Entering system_sleep_ext()
0000006732 [system.sleep] TRACE: Interface 4 is off already
0000006738 [system.sleep] TRACE: Interface 3 is off already

References

N/A

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Completeness

• User is totes amazing for contributing!
• Contributor has signed CLA (Info here)
• Problem and Solution clearly stated
• Run unit/integration/application tests on device
• Added documentation
• Added to CHANGELOG.md after merging (add links to docs and issues)