2022-10-22 11:41:10 +00:00
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#!/bin/bash
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set -x
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echo "Setting up the real time clock module, part 1"
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# Enable i2c rtc on bus 3, set GPIO pins sda=23 and sdl=24
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sudo cat << EOF | sudo tee -a /boot/config.txt
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dtoverlay=i2c-gpio,bus=3,i2c_gpio_delay_us=1,i2c_gpio_sda=23,i2c_gpio_scl=24
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dtoverlay=i2c-rtc,ds3231
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EOF
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# Disable fake-hwclock
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2022-10-23 14:04:10 +00:00
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sudo apt-get remove -y fake-hwclock
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2022-10-22 11:41:10 +00:00
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sudo update-rc.d -f fake-hwclock remove
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sudo systemctl disable fake-hwclock
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# Load modules at boot
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sudo cat << EOF | sudo tee -a /etc/modules
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i2c-bcm2708
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i2c-dev
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rtc-ds1307
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EOF
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# Remove some lines from /lib/udev/hwclock-set
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sudo sed -i '/^if \[ \-e \/run\/systemd\/system \] ; then$/,/^fi$/d' /lib/udev/hwclock-set
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echo "Setup RTC part 1 done, reboot and run setup-rtc-2.sh"
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