Create task.

[Justin_Yeh]

Hi Sir 

Is it necessary to use FreeRTOS for create two tasks ? Does Nordic has any library or API for task creating ?

[awneil]

Justin_Yeh said:

Is it necessary to use FreeRTOS for create two tasks ?

Not sure what you mean by that?

Many people manage to make projects on these kinds of chips without any RTOS at all!

So, in that sense, FreeRTOS - or any other RTOS - is not necessary.

Perhaps you could clarify your question - what are you actually trying to achieve?

http://www.catb.org/esr/faqs/smart-questions.html#goal

EDIT:

Justin_Yeh said:

Does Nordic has any library or API for task creating

infocenter.nordicsemi.com/.../lib_rtos.html

[Justin_Yeh]

I mean that I want to create a thread to run something. Should I porting FreeRTOS to my code for this target ?

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main thread --> run cli

other thread --> run a infinite loop for spi device data transmission.

[awneil]

You're still jumping the gun!

"create a thread" is a step - not a goal.

Justin_Yeh said:

Should I porting FreeRTOS to my code for this target

Before talking about any particular RTOS (such as FreeRTOS),  you should consider whether you need any RTOS at all.

[Justin_Yeh]

Thanks your help.

[ovrebekk]

Hi

Have you taken a look at the app_timer module?

With this one you can provide a pointer to a function which will be called either once after a certain delay, or repeatedly following a certain interval. 

It doesn't have as many features as a fully fledged RTOS, but for many applications it will be sufficient. 

We don't have any dedicated examples for the app_timer module, but many of the other examples use it. For instance the ble_app_hrs example uses the app_timer to schedule things like battery state updates and simulated heart rate sensor updates. 

Best regards
Torbjørn