On Wed, Aug 16, 2017 at 5:11 PM, <b.shube...@sirinsoftware.com> wrote:
> What type of hardware? I thought from hardware point of view only precise
> clock is required and all the other things in
> firmware. I've naively thought i could modify hackrf firmware to get this
> feature.
Mostly a FPGA and a PPS input from a GPS receiver.
Each individual sample has a timestamp of when it has been received.
And you can also reset the timestamp on the next PPS edge.
Technically it would be possible to modify the hackrf firmware and
repurpose some GPIOs and have all samples transmitted to the host be
in timestamped packets and implements timestamping in the on-board
ARM.
For additional hardware you'd only need an external GPS receiver (or
some other way to have both a single freq reference + single sync
pulse).
Cheers,
Sylvain
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