Created
August 20, 2017 14:31
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RTC ds3231
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| #/boot/config.txt | |
| dtoverlay=i2c-rtc,ds3231 | |
| # terminal | |
| $ sudo apt-get purge fake-hwclock | |
| $ sudo reboot | |
| $ hwclock -w | |
| $ sudo dpkg-reconfigure tzdata | |
| #/etc/rc.local | |
| /sbin/hwclock -s | |
| #/etc/default/hwclock | |
| HWCLOCKACCESS=no | |
| $ sudo reboot | |
| apt-get purge ntp | |
| apt-get install ntpdate | |
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