LinuxPPS on DART-MX6

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Hugh3226
Posts: 8
Joined: Mon Jan 09, 2017 4:27 pm

LinuxPPS on DART-MX6

Postby Hugh3226 » Tue Jan 24, 2017 10:36 am

I've connected up a GPS receiver using a connection to button 1 on the DT6CustomBoard as the PPS input.
All works if I press button 1 as an emulation of the pulse.
All works if I provide a programmable pulse once per second as long as the pulse is wider than 1ms.

But my Trimble GPS receiver provides a pulse that is 10uS wide.

I there some part of the circuit defeating this narrow pulse? Either on the DT6CustomBoard or on the DART-SOM?
Is it that LinuxPPS doesn't work with a true interrupt?

Any help would be much appreciated.
Regards
Hugh

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