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Arm Mbed OS is a platform operating system designed for the internet of things
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K22: RTC time will get reset on every bootup #15234

Open Arjun765 opened 2 years ago

Arjun765 commented 2 years ago

Description of defect

As we can see in targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/api/rtc_api.c, RTC is only considered enabled if a rtc_write call has been made. This would mean i would need to set the time with set_time every bootup or else the first time i call time() RTC will be reinitialized and time will be lost.

Target(s) affected by this defect ?

K22F

What version of Mbed-os are you using (tag or sha) ?

mbed-os-6.15.1

Toolchain(s) (name and version) displaying this defect ?

n/a

What version(s) of tools are you using. List all that apply (E.g. mbed-cli)

n/a

How is this defect reproduced ?

n/a

mbedmain commented 2 years ago

@Arjun765 thank you for raising this issue.Please take a look at the following comments:

What toolchain(s) are you using? It would help if you could also specify the versions of any tools you are using? How can we reproduce your issue?

NOTE: If there are fields which are not applicable then please just add 'n/a' or 'None'. This indicates to us that at least all the fields have been considered. Please update the issue header with the missing information.

0xc0170 commented 2 years ago

This line is incorrect, isn't it: https://github.com/ARMmbed/mbed-os/blob/master/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/api/rtc_api.c#L62 ?

It should just be checking rtc peripheral registers not the static variable . Can you send a pull request fixing the issue?

Arjun765 commented 2 years ago

Change was made in 1e46895f75a9481c812de5fbfae1a3781466291e, there probably was a reason why this was done. @mprse

Can you send a pull request fixing the issue?

Does mbed still have a CLA?

0xc0170 commented 2 years ago

Change was made in https://github.com/ARMmbed/mbed-os/commit/1e46895f75a9481c812de5fbfae1a3781466291e, there probably was a reason why this was done.

I can't see why it would be checking software value rather just reading the registers.. I checked some other implementations, they looks correct. we should probably remove the static variable there as it is not needed, is it?

Does mbed still have a CLA?

No it does not.