Live configuration of the nRF52832 Soc. using Bluetooth protocol and on & off modes

[Masoumeh]

Hi.

Hope you are well. 

I intend to use the nRF52832 for a wireless neural recording system and I need the nrf to do some works for me, such as:

1. putting the system in on and off mode through wireless connection, i mean i want to send the command by Radio transceiver to nRF52832. 

2. changing the configuration of the nRF52832 by its radio transceiver.

the main question is that does the transceiver of the nRF52832 works in system on sleep mode? or does it have such mode like it? 

Also I have another question. since the size of the final system and the placements of the components are very important to me, I am going to design a PCB that includes both my front-end part and the BLE set up. so I am not using the DK provided by different companies. how can I config the nRF52832? my decision was to use Keil, but I don't know how to start, because most of he example codes are for development kits. 

respectfully 

Masoumeh

[Kenneth]

Hi,

While in sleep the radio cannot be active, since it will draw several mA of current (instead of uA in sleep). If you need to wakeup the system, then the typical solution is to duty cycle the radio (e.g. wake it up every few seconds for some ms). Then any transmitter must transmit frequent enough to hit this wakeup window if it has some specific data that should trigger an action.

Typically I recommend to use BLE for all applications these days, simply because it provided high security combined with a fully tested way of establish connection, transferring data reliably and ensure interoperability with peer devices. You should find many examples in the nRF5 SDK that can be used for basis:

https://infocenter.nordicsemi.com/topic/struct_sdk/struct/sdk_nrf5_latest.html

Best regards,
Kenneth

[Masoumeh]

Hi, thanks a lot for your response. 

I have another question, while we are connecting with the nRF52832 by radio, can we send any command ? I mean can we change the configuration during wireless connection?  

[Kenneth]

You can send any data you like, and you can choose how to interpret and take action on the data as you like.

Best regards,
Kenneth

[Masoumeh]

thanks a lot. I have another question, can we receive the data from 2 individual nRF52832 simultaneously with 1 receiver? for example we have two system that are recording neural signals and both of them are sending the data to the computer, can we receive the data by 1 receiver or we need 2 of them?   

[Kenneth]

You need to duty cycle them (TDMA scheme).

Best regards,
Kenneth