for real time clock with nrf52840

[nishant singh]

Dear Team,

               I  am working on real time clock with the help of : github.com/.../nrf5-calendar-example but in this when do the power on and off so again start from starting like...

             s-- set  time

             g-- get time

             r-- run continuous time updates

but  i want to current time and date after power on and off , coin cell is already present.

Best regards

nishant singh 

[Kenneth]

Not sure if I understand, when you remove power then the program will not run, and thereby the code will not know how much time have elapsed. Thereby you need to always set the time again after a power ON.

Kenneth

[nishant singh]

but sir when I have worked on stm32 then  IN those case always display current time and date after power on and off  but now we are moving with same project with nrf52840 .....

[nishant singh]

sir please help me i also put the coin battery with nrf52840

but after power off no contain the current time and date

so how we can do this 

[nishant singh]

Dear sir ,

           is it possible to save current time and date or not with nrf52 ,after power on and off   . because we have to always show current time and date  on display. in my project.

[Kenneth]

It should be possible to store current time to flash (e.g. see fstorage or fds example), but if you power off the device the time will not increment.

Kenneth