PCF_8574 support

[mrmin24]

<<<<<<< HEAD

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• [X ] Searched the problem in issues (https://github.com/arendst/Sonoff-Tasmota/issues)

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• [ X] Hardware used : Sonoff basic with PCF-8574

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Hi,

I have not upgraded in a loooong time. I now upgraded to latest release and core and cannot seem to find the #define USE_PCF8574 anywhere. If I do add it, then all sorts of other errors pop up.

Am I doing something wrong or am I missing something?

Thanks

[stefanbode]

Oh yes, because it was excluded during compilation I missed all the required changes. Uploaded a new tested version with all the changes required to the new method of web integration

[mrmin24]

Thanks a lot. Seems to be working.

Just had to add #define USE_PCF8574 in my_config.h