INDEX
Addresses
TODO
sudo i2cget -y -a 1 0x51 0x00 b
0x08
sudo modprobe -v rtc-pcf8563
# insmod /lib/modules/5.10.17+/kernel/drivers/rtc/rtc-pcf8563.ko
# description: Philips PCF8563/Epson RTC8564 RTC driver
sudo i2cdump -y -f 1 0x51
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 08 80 88 94 81 80 88 00 00 80 80 80 80 88 0b 22 ???????..??????"
(...)
f0: 08 80 89 94 81 80 88 00 00 80 80 80 80 88 0b 22 ???????..??????"
watch i2cget -y 1 0x51
echo pcf8563 0x51 | sudo tee /sys/class/i2c-adapter/i2c-1/new_device
ls /dev/rtc* # /dev/rtc /dev/rtc0
sudo hwclock -w && sudo hwclock -r # 2021-05-17 10:03:53.118761+01:00
echo "dtoverlay=i2c-rtc,pcf8563" | sudo tee -a /boot/config.txt
* https://www.willhughes.name/post/ds3231_raspi3/
* https://www.raspberrypi.org/forums/viewtopic.php?t=175202#
MisC
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