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RTC: Implement RTC detection for devices that have it (newer MM+) #1665

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Dec 22, 2024
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RTC: Implement RTC detection for devices that have it (newer MM+) #1665

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12 changes: 10 additions & 2 deletions static/build/.tmp_update/runtime.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -763,14 +763,22 @@ save_settings() {
}

update_time() {
# Give hardware modders an option to disable time restore
if [ -f $sysdir/config/.noTimeRestore ]; then
# Detect RTC, if available, do not restore time
rtc_treshold=15 # usually around 3-5 at this point
current_time=$(date +%s)

if [ "$current_time" -gt "$rtc_treshold" ]; then
log "RTC available, not restoring time. Current time: $current_time"
return
else
log "RTC not available, restoring time. Current time: $current_time"
fi

timepath=/mnt/SDCARD/Saves/CurrentProfile/saves/currentTime.txt
currentTime=0
# Load current time
if [ -f $timepath ]; then
log "Restoring time"
currentTime=$(cat $timepath)
fi
date +%s -s @$currentTime
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3 changes: 1 addition & 2 deletions website/docs/07-apps/01-included-in-onion/clock.md
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Expand Up @@ -9,8 +9,7 @@ description: Set your Onion's time
## Presentation

Simple clock app which allows you to manually set the clock of your device. Especially useful for the Miyoo Mini which doesn't have an internal RTC (which means that the time is reset at each boot). By default, Onion preserves the current time during shutdown, and upon the subsequent boot, it is restored with 4 hours added.

If you don't want the device to restore the time on boot (e.g. you have modded your device to have hardware RTC), you can create the file `SDCARD\.tmp_update\config\.noTimeRestore`. Doing so will prevent the time restore.
If RTC is present, which is the case with newer Miyoo Mini+, or if it is modded in, the time is not restored or advanced but will instead be set by RTC.

![](./assets/clock.png)

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