nRF8002 forcing to sleep

[Anand Patel]

I have an ultra low power application that needs to broadcast it's proximity on a 1sec interval. However, about 75% of the day I would like the device to be powered down and not transmitting.. This should be controlled by a GPIO line. i.e. when a GPIO line is triggered high (but not held), the device should be transmitting and after a certain time, the device will sleep again unless the GPIO is triggered again.

It's not clear from the documentation the flexibility of this device. Would the above be possible ?

Thanks N.

[vich]

Assuming that your requirement is to broadcast for a duration, nRF8002 under Bonding state is defined to advertise for 180 seconds and the advertisement interval is configurable. Bonding state can be entered by using a GPIO line connected to one of nRF8002's Input pin, which then will timeout after 180 seconds to return to Sleep state.

[Ole Morten]

If it is ok that the nRF8002 advertises for 180 seconds each time it is woken up, doing it as vich says above is the best option.

If you need longer (or shorter) advertising timeouts, there isn't really any way to do it with the nRF8002, and I'd recommend you to take a look at the nRF51822 (SoC) or nRF8001 (connectivity) instead.