ODROID-C2 RTC wakealarm missing?

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ODROID-C2 RTC wakealarm missing?

Unread postby guava » Sun Feb 18, 2018 11:47 am

Hello,

I have a C2 with the PCF8563 RTC https://wiki.odroid.com/accessory/add-on_boards/rtc_shield

The wakealarm feature appears to be missing.

Code: Select all
root@odroid64:/sys/class/rtc/rtc0# ls
date  device   max_user_freq  power        subsystem  uevent
dev   hctosys  name           since_epoch  time
# cat /proc/driver/rtc
rtc_time   : 02:45:24
rtc_date   : 2018-02-18
24hr      : yes
root@odroid64:/sys/class/rtc/rtc0#


Is the wakealarm feature unsupported? How can I get the wakealarm feature working?

Thanks
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Re: ODROID-C2 RTC wakealarm missing?

Unread postby odroid » Sun Feb 18, 2018 12:26 pm

No. The RTC-Shield driver doesn't support the wakealarm.

You might need to modify the u-boot source code to enable the GPIO interrupt.
https://wiki.odroid.com/odroid-c2/appli ... ir_wake_up
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