| Re: [chrony-users] GPS/PSS hardware |
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On Tue, 8 May 2018, Nicolas Embriz wrote:
Hi, I would like to build/test a stratum-1 server, I have found articles about how to do that with a raspberry PI and boards
like https://store.uputronics.com/index.php?route=product/product&path=60_64&product_id=81
But wondering if there is hardware/devices that could be attached via USB and connect to an existing server.
USB is possible but not ideal. The interrupts are soft interrrupts (ie done by
sending signals on the usb in software rather than some hardware line.) Best
is if your system has some hardware line (eg serial port or parallel port) to
use. Of course that depends on what kind of accuracy you want. If it is ms
then a serial to usb converter will certainly work, and even just the GPS
signal on the usb might be fine. If it is sub-ms you want, then a hardware
interrupt is needed.
Or your desktop server might already have a serial port, and you can use that.
Any recommendations?
Thanks in advance.