Wake up from shut down mode

[Ridhi]

I am using nrf52832 dev kit and soft device s132. I have use my board as an advertiser.

Like if as i put coin cell battery into the dev kit it should wake up from a system off mode automatically and start advertising.

https://embeddedcentric.com/lesson-14-nrf5x-power-management-tutorial/

i found that if i use nrf_pwr_mgmt_shutdown() then how can i wake up automatically.

actually i dont want to do advertising after pressing a Button. 

Is there a way that i can wake up from system off mode using nrf connect app directly or other way

[dgerman]

"The CPU can NOT wake up on interrupts. There are only a few limited wake up sources from System Off: GPIO, NFC and pin reset."

"System On : The most commonly used sleep mode. The expected SoC current is few micro amps."

Do you wan tthe system to wake based a  timer?

[Ridhi]

i want  a suggestion that we are working on cattle health monitoring for which our dk will be advertising the data of accelerometer sensor. What is the issue that the farmer dont want to use button to wake from system off mode. So pls suggest a way that as soon as we put battery in the dev kit it should not consumpe much current before it starts advertising and how can we wake it up 

[dgerman]

Using a coin battery like CR2477, with reading accelerometer and advertising every few seconds the batters should last more than a year maybe even 2 years .

[Ridhi]

I am using coin cell only but my issue is that how can i     wake up my device from system off mode for advertising to begin 

[dgerman]

Why do you want to use "system off" mode?

The system will reset and start running when you insert the battery.

Perhaps instead of the dev board you should look at something like a Ruuvi Sensor tag

I think it already does what you need   see ruuvi.com

less expensive, comes in a water resistant enclosure and includes accelerometer and movement counter.

[Ridhi]

i want the system to work like when i put battery into it initially it is in off mode so that least power consumption occurs.

actually when i used system off mode i was i able to get 0.34 micro amp current and then when press a button i am able to wake it and start advertising. 

but the user wants that it should advertise without any button press and maintain minimum consumption of current.

[dgerman]

I do not understand 

1) why do you want system off when battery can last maybe 2 years?

2) After inserting battery,  what would cause system to come back on ?