Slave current consumption

[Rcmesh]

Hello,

I was wondering if there is some way to program a device to act like a BLE slave, which would sleep and periodically wake up to stay in receive mode for a certain amount of time, and then go back to sleep.

I have already been measuring current consumptions using the ble_app_pwr_profiling example (SDK 11), using the nRF51422 DK (PCA10028). In this example, however, the device advertises (connectable and non-connectable advertisements). As I meantioned, I would now need just that the device wakes up and listens, without advertising. Is there some possible way?

Thanks in advance!

[MartinBL]

Hi, 

Yes, that shouldn't be problem. You can use timers or RTC to keep track of time while in sleep mode and wake up at whatever intervals you want to do some scanning. I suggest that you look at one of the BLE Central examples in the SDK. They show  you how to scan, and don't advertise. 

In the BLE world, such devices that neither advertise nor initiates any connections are called Observers.