Start recurring timer on boot.

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Jeff Paluck

• October 18, 2019 21:27

I've got a PV1100 display and I'm wondering if there's an event that fires when the display boots up that I could use to fire an event that starts a recurring timer.  I'd like to start sending CAN messages to my controller without any user input.  

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  Jacob Billeter

  • October 18, 2019 21:32

  Hi Jeff,

  From the applications manual, there is an event called Screen.ScreenReady

  

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  Justin Eldridge

  • October 18, 2019 21:41

  This is what we do: 100ms timer loop that starts as soon as the CPU boots

  

  

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  Jeff Paluck

  • October 18, 2019 21:53

  Thank you both, that's very helpful!

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  Jacob Billeter

  • October 18, 2019 22:01

  Do that same state machine but include the Screen.ScreenReady first.

  

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  Jeff Paluck

  • October 22, 2019 15:26

  Hi Jacob, would you please show how you were able to use the Screen.ScreenReady event as the transition in the state machine you posted?

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  Jacob Billeter

  • October 22, 2019 15:48

  Uncheck the "auto create" and then choose Screen.ScreenReady

  

   

  

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  Jeff Paluck

  • October 22, 2019 15:52

  Thank you!

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  Jeff Paluck

  • January 28, 2020 20:35

  Caveat for anyone who finds this thread:  After the ScreenReady event fires, the system still needs a moment before it sends any CAN messages.  I tried using this event to send some initial configuration data to a controller, and the first message in the series wouldn't get sent.  (I think it's due to the display doing the J1939 address reserve sequence at this moment)  I add a 2 second delay after the screenready event fires and that seems to be enough time that a message won't fail to send.  IF anyone has a better method for knowing when the display is fully ready to communicate, I'd love to hear it.

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