Nordic Calendar example (https://github.com/NordicPlayground/nrf5-calendar-example) related issue

[Yogeshwar]

I wanted to implement a time sync feature on nRF-52840 DK. I took a reference from this example, but there were certain things unclear to me.

Can somebody explain to me what is calibrated and uncalibrated time here? and what exactly are we doing here in this example?

[haakonsh]

In this example, a calendar is periodically synced with an outside time-stamp. It does not cover how you obtain the outside time-stamp, just how you can use it to update the calendar. 

As the calendar uses the RTC as it's base clock, it will experience a fair amount of drift, +/- 10-20ppm at best, and will need to be periodically calibrated/synced. 

I believe the uncalibrated time is the current time of the calendar, and the calibrated time is the provided synchronization time-stamp.

[Yogeshwar]

haakonsh I flashed this example on an nRF52840 DK and I got this output on serial

when I use the get function(option g) to get the time, I get this as the output where the calibrated and the uncalibrated time is the same.

next, when I use the run continuous-time updates (option r), I get a time difference of 4 seconds every time and I just don't get it that why is there such a big difference.

Later I set time to current time and then tried to run continuous-time updates (option r) and still there is a time difference of 4 seconds.

can you please explain this behavior?

[manikandan]

sir kindly check my new thread about sending 100 packets per send and give me suggestions

thanks and regards

manikandan v

[ovrebekk]

Hi 

What is the case number?

T.

[manikandan]

devzone.nordicsemi.com/.../how-to-send-100-plus-packets-in-a-single-structure-or-string

[ovrebekk]

Hi 

It seems you already got a response from Karl on this question?

I suggest you follow it up with him. 

Best regards
Torbjørn

[manikandan]

hello can you give suggestions for my other ticket

https://devzone.nordicsemi.com/f/nordic-q-a/69481/regarding-scl-sda-pin 

thanks and regards 

manikandan v

[ovrebekk]

Hi 

The ticket in question has been assigned to one of my colleagues, and he should get back to you within a day or less. 

Best regards
Torbjørn