[nRF5 SDK]Bluetooth interrupt priority and peripheral interrupt issues

[zero]

Dear Support Team,
We want to make a special and strict application, and we don't want Bluetooth interruption to interrupt the task. For example, if the Bluetooth connection interval is set to 60ms, the working period of my task is 100ms, and it cannot be interrupted by other tasks (Bluetooth) within 100ms. How can I set the interrupt priority to achieve it?

Best Regards,

Zero

[Kenneth]

Hello,

You can use MPSL to request timeslots to ensure you can run 100ms un-interrupted, for example on how to do this you can refer to an example that use timeslots ro use the radio to support ESB protocol:
https://github.com/too1/ncs-esb-ble-mpsl-demo 

Relevant documentation for timeslot:

"It can also be used to suppress radio activity and to reserve guaranteed time for application activities with hard timing requirements."
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/mpsl/doc/timeslot.html  
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/mpsl/timeslot/README.html 

Kenneth

[zero]

Hi Kenneth，

We have completed the development in nRF5 SDK 15.3, and it is impossible to switch to NCS. How can it be implemented in nRF5 SDK 15.3?

Best Regards,

Zero

[Kenneth]

Det same can be done in the nRF5 SDK, there is an old guide here:
https://devzone.nordicsemi.com/guides/short-range-guides/b/software-development-kit/posts/setting-up-the-timeslot-api 

https://infocenter.nordicsemi.com/topic/sds_s132/SDS/s1xx/concurrent_multiprotocol_tsl_api/tsl_usage_examples.html 

Kenneth

[zero]

Hi Kenneth，

We have considered using Timeslot, but there is one question for you to confirm: the Bluetooth connection interval is fixed at 60ms, and modification is not allowed, and my task is not to be interrupted by Bluetooth interruption within 100ms, using Timeslot does not meet my needs, right?

Best Regards,

Zero

[Kenneth]

Hi,

When you request a 100ms timeslot period, then a connection interval will be skipped to ensure that you can execute for 100ms uninterrupted.

Kenneth

[zero]

Hi Kenneth，

Thanks for the support, we'll test it out.

Best Regards,

Zero