Bluetooth stack use of timers/counters with nrf52840

[jahess]

Stumbled upon the zephyr description of the multi layer bluetooth stack, particularly the controller,  and thought... hey those must be using timers and counters.

Then I found:

    https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/connectivity/bluetooth/bluetooth-arch.html#bluetooth-low-energy-controller

which confirms this.

My newbie question is... which timers and controllers?  Is there a way to get zephyr to explicitly indicate what all MCU resources are in use?  What is left for application use?

Thanks,

Jonathan Hess

[Sigurd]

Hi,

Then I found:

    https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/connectivity/bluetooth/bluetooth-arch.html#bluetooth-low-energy-controller

which confirms this.

This is for the open source controller in Zephyr. For the SoftDevice Controller and MPSL, see this page, that also list the timer instances:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/mpsl/doc/mpsl.html

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/softdevice_controller/doc/softdevice_controller.html

[jahess]

Made a posting in the zephyr discussion forum:

    https://github.com/zephyrproject-rtos/zephyr/discussions/53968