[etherlab-users] Making the LED stay on in the "user" example

[Allan Brighton]

Hi Matthieu,

To stop writing I set a flag when the operational state was reached and the LED was on.
I suspected it might be the watchdog timeout, since I saw that mentioned somewhere, but
I didn't find it in the documentation. Now it makes sense.

So is the usual way of doing things to have a cyclic routine that always writes the same
values (assuming they haven't changed)? And how do you set watchdog_mode to EC_WD_DISABLE?

Thanks,
Allan

On 20/02/2014 20:42, Matthieu Bec wrote:
> Hello Allan,
>
> What do you mean by `stop writing`, stopping the cyclic task?
> Slaves usually drop off OP state if they stop receiving frames, yours
> might default itself to an Off state that could explain the issue.
> Try explicitly setting the watchdog_mode to EC_WD_DISABLE in your
> sync_info_t.
>
> Matthieu
>
>
> On 2/20/14, 10:10 AM, Allan Brighton wrote:
>>
>> Hi all,
>>
>> I'm new to EtherCat and EtherLab and I modified examples/user/main.c to
>> work with the devices I have for testing: (EK1100, EL2202, EL1252, EL2252).
>> Everything works and the LED I attached to the EL2202 turns on and off,
>> however the code is using a timer and constantly setting the output
>> value to 1 or 0 (on or off).
>> Why can't you just set the value to 1 once and have the LED stay on?
>> Even if I wait until the slave reaches the operational state, the LED
>> just blinks once when set to 1,
>> but doesn't stay on, unless the value is constantly updated.  What am I
>> missing?
>>
>> Thanks,
>> Allan
>>
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>