On Sun, 2 Oct 2016, [email protected] wrote:
> Date: Sun, 2 Oct 2016 19:59:37 +0000
> From: [email protected]
> Reply-To: "Enhanced Machine Controller (EMC)"
> <[email protected]>
> To: [email protected]
> Subject: [Emc-users] HAL "watchdog" component
>
> I am trying to put this in to watch the VFD modbus driver's "watchdog" pin,
> and tie a pyvcp LED showing VFD is good, as per:
> http://linuxcnc.org/docs/html/man/man9/watchdog.9.html
>
> I used:
>
> loadrt watchdog num_inputs=1
> addf watchdog servo-thread
>
> I have 2 issues:
>
> One, it generates the following error:
>
> HAL: ERROR: function 'watchdog' not found
> custom_postgui.hal:42: addf failed
>
> My first thought was "well, I didn't include which watchdog it was, it needs
> to be watchdog.0". But that just gets "function 'watchdog.0' not found".
> And the line "setp watchdog.timeout-0 1.0" DOES pass, as does "net
> vfdReadyLed watchdog.ok-out => pyvcp.vfd-ready-led".
>
> Second, I'm confused. The man pages only offers "num_inputs" as an option,
> and that only creates more fan-in, not multiple components. There's no
> "count" or "names" parameter, and I tried, HAL just errors "unknown
> parameter" when it loads.
>
> So can there only be one "watchdog" component, ever? That doesn't seem right
> at all, that's not how HAL components work. But how would you include more,
> and refer to different ones? How does "addf" work?
>
> Danny
In the watchdog manual page you will see the two wtachdog functions
"process" and "set-timeouts"
These are the functions tha must be added via addf
(watchdog.process and watchdog.set-timeouts)
Peter Wallace
Mesa Electronics
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