I am using a Jetson Nano Dev-Kit B. I “installed” a Coin-Cell Battery of Type CR1225, and it is working fine. Now I am wondering if there is any way to read the Battery Voltage, so i can set up a Warning Message when the Battery is running low and needs to be replaced.
I already searched the Forum, but could not really get the Info I was looking for.
cat /proc/driver/rtc (as mentioned here) does not show any Info about the Battery at all:
rtc_time : 09:54:36 rtc_date : 2023-04-13 alrm_time : 00:00:15 alrm_date : 1970-01-02 alarm_IRQ : no alrm_pending : no update IRQ enabled : no periodic IRQ enabled : no periodic IRQ frequency : 1 max user IRQ frequency : 64 24hr : yes name : 7000e000.rtc
Any help would be greatly appreciated!