Finite state machine Question

RE: Finite state machine Question

kokheng — Tue, 21 May 2019 06:18:57 GMT

Hi Chris_Dev,

Yes, I may need help on this question. Thanks first :-)

RE: Finite state machine Question

Chris_Dev — Tue, 21 May 2019 06:07:23 GMT

Hi Kokheng, did you manage to figure it out? I might be able to help you.

RE: Finite state machine Question

Edvin — Wed, 13 Mar 2019 13:36:47 GMT

Hello,

I am sorry. We don't have any other documentation other than that in the code files (.c and .h files).

One of my colleagues sent me this photo, which they used when they wrote the code:

RE: Finite state machine Question

kokheng — Tue, 12 Mar 2019 01:51:32 GMT

Thanks Edvin, does Nordic provide doc to explain how FSM work?

RE: Finite state machine Question

Edvin — Mon, 11 Mar 2019 11:51:29 GMT

Hello,

I suggest that you try to set #define FSM_DEBUG (1) in nrf_mesh_config_core.h on line 519. It will then post some finite state machine debug information in the log.

It seems a bit complicated. It looks like it depends on what state it was in before calling fsm_event_post(). My best tip for you is to try it out with the FSM_DEBUG = 1 and see what happens.

BR,

Edvin

RE: Finite state machine Question

kokheng — Sat, 09 Mar 2019 01:47:45 GMT

Hi Edvin,

I have one assignment that needs to support Generic default transition time server and using

nRF52840 - DK board
nRF5 SDK v15.2 + nRF5 SDK for mesh v3.1

From the below examples (i.e. nRF5 SDK for mesh v3.1), I try to copy the same coding style and then build into my Generic default time server example where it will base on a light-switch example

light-switch - refer to Server folder and using Generic On/OFF Server
experimental_dimming - refer to the server folder and using Generic Level Server

In the end, it will combine both Generic ON/OFF Server and Generic default transition time server into one project.

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In the nRF5 SDK for mesh source code, it already provides some of the models

generic_dtt
generic_level
generic_onoff
generic_ponoff

light-switch example using generic_onoff models and build a code layer (i.e. app_onoff.c) between main.c and generic_onoff model.

experimental_dimming using generic_onoff models and build a code layer (i.e. app_level.c) between main.c and generic_level model.

My example is based on example light-switch - Server, and I try to build the Generic default transition time server on top of it. The same concept as the above examples, my example will have app_dtt.c between of main.c and generic_dff models.

If my understanding not correct, please correct here!!!

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My question is generated after reviewing the example experimental_dimming - server folder, where it builds a finite state machine in app_level.c.

In this finite state machine,

In the State "FSM_ANY_STATE" - The E_SET Event will trigger the FSM by fsm_event_post(&p_server->fsm, E_SET, p_server) but there is three event as shown in belowFSM_TRANSITION(E_SET, G_SET_DELAY, A_DELAY_START, S_IN_DELAY),
FSM_TRANSITION(E_SET, G_SET_TRANSITION, A_TRANSITION_START, S_IN_TRANSITION),
FSM_TRANSITION(E_SET, FSM_OTHERWISE, A_TRANSITION_COMPLETE,S_IDLE)

May I know which line will go into first?

and if you found any wrong from my understanding, please correct me.

Thanks.

RE: Finite state machine Question

Edvin — Fri, 08 Mar 2019 13:50:13 GMT

Hello,

I have not seen this before. I see that it is in the SDK. What example are you referring to, and do you see an issue?

I believe I don't understand your question. Can you please elaborate?

Best regards,

Edvin