Clock synchronisation between BLE devices using Zephyr

[marcus.nn]

We need to implement precision clock synchronisation between two or more NRF52 BLE devices (sub millisecond precision) and need some advice on what path to choose.

I have seen the example using the Nordic SDK and timeslot API. Would it be possible do something similar with Zephyr? Is there maybe some place in the controller driver where it would be possible to retrieve a timestamp close to the point where a packet is actually sent or received? Or are there other possibilities?

I posted a similar question at the zephyr github but thought it might not be the right forum since this probably involves the nordic specific low level driver code.

[Håkon Alseth]

Hi,

 

There are examples on how to do this using the timeslot API with the softdevice, but I am not aware of any functionality in zephyr that provides you with such timing details, but I am not that familiar with zephyr rtos.

The easiest way to get more info regarding the zephyr rtos is to contact the zephyr community. As you've tried github, I'd recommend contacting via one of the other channels, IRC or mailing lists, then refer to the specific github issue that you registered.

 

Kind regards,

Håkon