Bluetooth without scheduler ?

RE: Bluetooth without scheduler ?

endnode — Mon, 26 Oct 2015 12:22:16 GMT

I'm using Nordic nRF51 SDK with nRF51822 chip, my firmware is using BLE and other peripheral blocks and I don't use scheduler. So it can work (RK's comment above is giving very nice hint under which conditions). Once you use more drivers and app "libs" from Nordic SDK then using scheduler or some equivalent is kind of necessary to make all event based processes served.

RE: Bluetooth without scheduler ?

TheRaven — Mon, 26 Oct 2015 09:33:02 GMT

What is SVC please ? (I don't find what in means on the user guide). Ok cool, so you confirm that it is possible to create a function which can turn-on Bluetooth, process sent and received informations, and then turn-off Bluetooth ?

RE: Bluetooth without scheduler ?

TheRaven — Mon, 26 Oct 2015 09:30:12 GMT

I use the processor of the nrf51422 DK. In fact, up to now, I've developped simple application which control step-by-step motor. And as I would like to use Bluetooth now, I've test the example"LedButtonDemo" with my DK, and it works fine, so I would like to build a function wich can turn on Bluetooth, send and receive some informations, and turn off Bluetooth.

RE: Bluetooth without scheduler ?

RK — Mon, 26 Oct 2015 09:15:45 GMT

no you don't have to use the scheduler at all, as long as you ensure you're calling all sd_* calls from thread context or an interrupt context with lower priority than the SVC call (which is 2, so you can use 3 only), you're fine.

RE: Bluetooth without scheduler ?

awneil — Mon, 26 Oct 2015 08:59:27 GMT

I don't think this has anything to do with Bluetooth as such - but it is probably a requirement of the SoftDevice.

As you're "developping an application which doesn't use Bluetooth up to now", does that mean you have a separate processor for that application? In that case, it might be easier to add bluetooth by using a chip such as nRF8001 - rather than try to port the whole application to nRF51? Or just keep the nRF51 as a separate "network processor"?