Am Dienstag, 23. August 2011, 22:46:23 schrieb ekgnkb3d:
>
> For example a DS18B20 is almost not effected, it simply will be polled
> again after the cable reconnected and responded a new value - fine, in
> this case you can call it "stateless".
> But the problem starts if it had been alarms configured, they got lost and
> therefore the DS18B20 will never trigger the alarm after the cable was
> disconnected/reconnected until the configuration is send again (I guess,
> I'm not sure with the DS18B20) so it behaves stateful in volatile memory.
>
For the DS18B20, there is no way other than reading the templow or temphigh
node from time to time to check it. It doesn't offer a power-on alarm as the
DS2408. That's really a nuisance.
> With the BAE0910 I'm sure: Once the cable was disconnected only 1s, the
> complete PWM configuration is gone. A later writing to the Duty-Cycle
> registers to modify the PWM will not raise an error, but the output pins
> are on default mode, which is not working PWM... so it have to be
> reconfigured.
>
You could ask Pascal Baerten to add a power-on alarm function to the BAE
firmware.
Kind regards
Jan
------------------------------------------------------------------------------
EMC VNX: the world's simplest storage, starting under $10K
The only unified storage solution that offers unified management
Up to 160% more powerful than alternatives and 25% more efficient.
Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev
_______________________________________________
Owfs-developers mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/owfs-developers
