Receive a broadcasted packet within 5 sec

[sunil.dhaduk]

Hi,

I want to design one BLE braodcaster and one BLE observer using nRF51822 chip.

What should be the advertising interval time and receiving interval time (with receiving window time) to receive the broadcasted packet within 5 sec without any failure?

It should be power optimized to ensure minimum power consumption.

[shibshab]

With advertisements there can be no guarantees as the devices are not synchronized in any way.

By initiating a connection you can use a connection interval of 4 seconds, in which both devices will be synchronized and the power consumption will be at an absolute minimum.

Alternatively you could set the scan window to 5 seconds which will make the observer stay on a single ADV channel for 5 seconds before jumping to the next channel. This will however draw much more power than a connected solution.