Setup rtc clock on radaxa zero

#1

Hi can anyone help my radxa zero install rtc hardware clock . Cannot detect i2cdetect -y 1error message
Error: Could not open file /dev/i2c-1' or /dev/i2c/1’: No such file or directory. hwclock -r hwclock: 1 too many arguments givenTry ‘hwclock --help’ for more information.
can anyone help to guide how to install rtc clock up step by step

Thank

#2

Radxa Zero doesn’t have on board RTC, you need to connect some RTC hat on the GPIO.

#3

Hi jack

I already connect a etc hat on it model  ds1307 etc clock module. How to setup the ds1307  use on Radxa zero . Can provide step by step installing .

Thank

#4

I assume you are using a HAT designed for Raspberry Pi. From what you said the HAT seems to be using physical pin 2 and 3 for /dev/i2c-1, which corresponding to /dev/i2c-3 on Zero. You can then add an overlay to enable I2C_EE_M3.

#5

I have enable I2C_EE_M3 but when I run
sudo i2cdetect -y 3 it scans and return UU in one of address block