Multiple FreeRTOS Softdevice Tasks not Working

RE: Multiple FreeRTOS Softdevice Tasks not Working

Susheel Nuguru — Thu, 05 Mar 2020 07:52:36 GMT

The trick is to make sure that the advertising init isn't called until the ble is initialized. and softdevice task is created.

Then you start advertising just before polling for events.

If you do not do it this way, It is possible that you start advertising way ahead the softdevice_has finished initializing (it could take many milliseconds after you called the softdevice_enable, since it need to calibrate the clocks if necessary)

RE: Multiple FreeRTOS Softdevice Tasks not Working

danielco68 — Wed, 04 Mar 2020 20:44:31 GMT

How would one block the advertising task until the SD is initialized? Is there an indicator one could use to that tells me that SD is initialized. Is the stack_init function returning NRF_SUCESS not the only available indicator?

Thanks

RE: Multiple FreeRTOS Softdevice Tasks not Working

VikramB — Tue, 03 Mar 2020 02:03:43 GMT

isn't the softdevice initialized in ble_stack_init? I have called that above the included code in the main function, along with the other requisite initialization functions that are present in the ble_app_hrs_rscs_relay_pca10040_s132 example

RE: Multiple FreeRTOS Softdevice Tasks not Working

Susheel Nuguru — Mon, 02 Mar 2020 12:58:41 GMT

Probably because the advertising init runs before the softdevice is initialized. The SD initialization could take many milliseconds depending on the accuracy of the LF clock you are using. If you want to run them in two different threads, you need to make sure that advertising task is blocked until SD is initialized