Accurate Timestamp from Cellular

RE: Accurate Timestamp from Cellular

Martin Lesund — Fri, 24 Jan 2020 10:21:18 GMT

Hi Phipi,

Yes, GPS would be a more accurate option.
Another option is to get the time from an NTP server, similar to what is done in this sample.

RE: Accurate Timestamp from Cellular

phipi — Fri, 17 Jan 2020 15:32:58 GMT

Accuracy to actual time is not so important but the difference in time base between the two boards would need to be synchronized to withing 10s-100s of ms. I'm thinking that I'm going to need some way for the two devices to talk to each other directly but unfortunately I don't think that's going to be possible so I'm hoping there's another way. Would GPS time be more accurate?

RE: Accurate Timestamp from Cellular

Martin Lesund — Fri, 17 Jan 2020 15:06:25 GMT

Hi Phipi,
It really depends on how great the resolution you need for the timing.

A quick suggestion that has a 1second resolution.

This can be solved by setting XNETTIME (network time support) then get the XTIME and set the CCLK based on that.

How accurate do you need it?