Setting an NTP server

simpz

I know Emteria probably works like other Android versions and uses Google for time sync? Maybe even NTP?

Is there a way in Emteria to set this NTP server to a local one and not an Internet one?

kalkov

Yes, Android has a built-in (S)NTP client with following properties:

ntpServer: 2.android.pool.ntp.org
ntpPollingInterval: 86400000 (once a day)

Your system logs (Logcat) show errors (if any):

SntpClient: request time failed: java.net.SocketTimeoutException: Receive timed out

Otherwise you will receive a confirmation:

SntpClient: round trip: 23ms, clock offset: 206575ms

There is a way to set another server using ADB:

adb shell settings put global ntp_server <new-ntp-server>

simpz

@kalkov said:

There is a way to set another server using ADB:

adb shell settings put global ntp_server <new-ntp-server>

I tried this on ssh and it just aborts any idea why?

1|rpi3:/ # settings put global ntp_server ntpserver.internal
Aborted
134|rpi3:/ # strace settings get
execve("/system/bin/settings", ["settings", "get"], [/* 12 vars */]) = -1 ENOEXEC (Exec format error)
clock_gettime(CLOCK_MONOTONIC, {3362, 44743143}) = 0
write(2, "strace: exec: Exec format error\n", 32strace: exec: Exec format error
) = 32
mprotect(0xb6f64000, 4096, PROT_READ|PROT_WRITE) = 0
mprotect(0xb6f64000, 4096, PROT_READ) = 0
mprotect(0xb6f64000, 4096, PROT_READ|PROT_WRITE) = 0
mprotect(0xb6f64000, 4096, PROT_READ) = 0
munmap(0xb6f64000, 4096) = 0
exit_group(1) = ?
+++ exited with 1 +++


simpz

Interestingly this does work over adb as you said. Just not as root over SSH.

Thanks for your help on this

simpz

One thing. I don't seem to be able to set the polling interval. I have tried:

adb shell settings put global ntp_polling_interval 14400

adb shell settings put global ntp_pollinginterval 14400

adb shell settings put global ntppollinginterval 14400

But it sticks rigidly to syncing every 12 hours (as I can see from my NTP server). Does this setting work? Or does anyone know what the setting should be?

Thanks

kalkov

Sorry for the late response. It seems that there is no setting for the polling interval. The value is hardcoded in the resources.