NTP-Server with Raspberry Pi and Sure Electronics GPS Eval board: Unterschied zwischen den Versionen
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== Scope == | == Scope == | ||
| − | It was already a few years ago when I bought a Sure Electronics GPS timing receiver. Though, there was never enough time to complete and deploy it. I | + | It was already a few years ago when I bought a Sure Electronics GPS timing receiver. Though, there was never enough time to complete and deploy it. I have done it now. |
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| + | The Sure receiver is nice because it has 3,3V IO pins, and this matches perfectly with a Raspberry Pi. So it's a good point using it. | ||
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| + | Obviously many people have problems with the NTPD that comes with the recent raspian distributions: ntp 4.2.6p5. It does not support PPS... | ||
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| + | It is rather easy to make the kernel PPS aware, but ntp still is not capable of using it. I needed to recompile the ntp package so that I was able to use it. The symptom therefore is: | ||
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| + | * The tool '''ppstest''' does report the reception of a pulse, but even if you configure NTP correctly, it won't give you an output with PPS using the command '''ntpq -p'''. | ||
== References == | == References == | ||
Version vom 11. April 2016, 11:35 Uhr
1 Scope
It was already a few years ago when I bought a Sure Electronics GPS timing receiver. Though, there was never enough time to complete and deploy it. I have done it now.
The Sure receiver is nice because it has 3,3V IO pins, and this matches perfectly with a Raspberry Pi. So it's a good point using it.
Obviously many people have problems with the NTPD that comes with the recent raspian distributions: ntp 4.2.6p5. It does not support PPS...
It is rather easy to make the kernel PPS aware, but ntp still is not capable of using it. I needed to recompile the ntp package so that I was able to use it. The symptom therefore is:
- The tool ppstest does report the reception of a pulse, but even if you configure NTP correctly, it won't give you an output with PPS using the command ntpq -p.
2 References
- http://www.satsignal.eu/ntp/Sure-GPS.htm Here the board is described very well
- http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html
- https://store.uputronics.com/index.php?route=product/product&path=60_64&product_id=81
- http://rdlazaro.info/compu-Raspberry_Pi-RPi-stratum0.html
- http://mythopoeic.org/pi-ntp/
- https://raspberry.tips/raspberrypi-tutorials/raspberry-pi-uhrzeit-ueber-gps-beziehen-zeitserver/
3 Images
