Disconnect RTC from systemd-timesyncd.service





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I have an RPI3 with an added external RTC (Adafruit PiRTC - PCF8523). My system does not have consistent access to the internet, occasionally loses power, and is remote (in the field), so physical intervention is not convenient.



I would like to keep systemd-timesyncd.service enabled (or something like it) so that when the internet is available the RPI system time can be updated.



The significant problem I have been having is that systemd-timesyncd.service writes the system time to the RTC. This is super frustrating because the point of the RTC is to be an independent system.



How can I edit the systemd-timesyncd.service to stop its ability to write to the RTC, while still being able to access the RTC and write the RTC time to the RPI (manually, with code, crontab, etc)?



Suggestions & approaches appreciated.






raspberry-pi3 systemd







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    I have an RPI3 with an added external RTC (Adafruit PiRTC - PCF8523). My system does not have consistent access to the internet, occasionally loses power, and is remote (in the field), so physical intervention is not convenient.



    I would like to keep systemd-timesyncd.service enabled (or something like it) so that when the internet is available the RPI system time can be updated.



    The significant problem I have been having is that systemd-timesyncd.service writes the system time to the RTC. This is super frustrating because the point of the RTC is to be an independent system.



    How can I edit the systemd-timesyncd.service to stop its ability to write to the RTC, while still being able to access the RTC and write the RTC time to the RPI (manually, with code, crontab, etc)?



    Suggestions & approaches appreciated.






    raspberry-pi3 systemd







    share|improve this question

























      0












      0








      0








      I have an RPI3 with an added external RTC (Adafruit PiRTC - PCF8523). My system does not have consistent access to the internet, occasionally loses power, and is remote (in the field), so physical intervention is not convenient.



      I would like to keep systemd-timesyncd.service enabled (or something like it) so that when the internet is available the RPI system time can be updated.



      The significant problem I have been having is that systemd-timesyncd.service writes the system time to the RTC. This is super frustrating because the point of the RTC is to be an independent system.



      How can I edit the systemd-timesyncd.service to stop its ability to write to the RTC, while still being able to access the RTC and write the RTC time to the RPI (manually, with code, crontab, etc)?



      Suggestions & approaches appreciated.






      raspberry-pi3 systemd







      share|improve this question














      I have an RPI3 with an added external RTC (Adafruit PiRTC - PCF8523). My system does not have consistent access to the internet, occasionally loses power, and is remote (in the field), so physical intervention is not convenient.



      I would like to keep systemd-timesyncd.service enabled (or something like it) so that when the internet is available the RPI system time can be updated.



      The significant problem I have been having is that systemd-timesyncd.service writes the system time to the RTC. This is super frustrating because the point of the RTC is to be an independent system.



      How can I edit the systemd-timesyncd.service to stop its ability to write to the RTC, while still being able to access the RTC and write the RTC time to the RPI (manually, with code, crontab, etc)?



      Suggestions & approaches appreciated.






      raspberry-pi3 systemd




      raspberry-pi3 systemd






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 3 at 6:53









      kaykay

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