ODROID-C2 RTC wakealarm missing?

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guava
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ODROID-C2 RTC wakealarm missing?

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

Hello,

I have a C2 with the PCF8563 RTC https://wiki.odroid.com/accessory/add-o ... 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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odroid
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Posts: 29981
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Re: ODROID-C2 RTC wakealarm missing?

Unread post by 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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