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xiaozhuai/pi_alpine_ds3231.md

Last active September 7, 2023 13:31
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Raspberry pi + Alpine + ds3231
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pi_alpine_ds3231.md

Install the RTC module on GPIO pins 1, 3, 5, 7

  1. Add or edit usercfg.txt and add
dtparam=i2c_arm=on
dtoverlay=i2c-rtc,ds3231
  1. Edit /etc/mkinitfs/mkinitfs.conf and add a feature rpirtc, then rebuild initramfs
mkinitfs
  1. Add hwclock service
rc-update del swclock boot
rc-update add hwclock boot
  1. Write current time
hwclock -w
  1. If alpine not install as sys mode, you need save your changes
lbu commit
  1. Reboot
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