How are the link resources shared among multi peripherals?

[xvhongpeng]

Dear friends,

           I am connecting multi peripherals to single central, and i am using nrf53832 devices. How are the link resources shared among multi peripherals? In addition, can i schedule the link resources according to some policies? Thank u.

[Susheel Nuguru]

what do you mean by link resources?

[xvhongpeng]

• It represents all the resources needed for communication. The central can only communicate with one slave device via the link resources at a time, right? 

[Susheel Nuguru]

The softdevice has a scheduler that schedules the link to get access to all the resources it needs for the communication. 

It is similar to a scheduler for an RTOS. In RTOS the scheduler works on CPU as a resource, but with softdevice, the scheduler works as RADIO as a resource.

Please also read this and this and let me know if you need anymore info.

[xvhongpeng]

if I connect multi peripherals to single central, the central can only communicate with one peripheral at a time. Right? How are the link resources shared among multi peripherals? Time Division?

[Susheel Nuguru]

Yes, It is time division access for the shared resources. That is where the scheduler comes into picture which gives a time slot for a peripheral link to run at a particular time.