Adding sensor interface and LM75 i2c sensor support

[BenjiU]

A new sensor interface is implemented, that reads sensors in the specified interval in a seperated thread. New sensors may easily be implemented by using the base class Sensor(GenericSensor) and implementing its methods. YAML config schema was extended for sensor interface. LM75 i2c temperatur sensor is implemented. This will be a basic step for #40.

[flyte]

Wow, this is really nice work, thanks!

I'm not in a position to test this out right now, so I take it it all works for you? Do you use the IO modules as well as the sensor ones?

Cheers,
Ellis

[BenjiU]

Thanks for your review and the good comments.

I'm not in a position to test this out right now, so I take it it all works for you? Do you use the IO modules as well as the sensor ones?

I just tested the commented version on my raspberry with gpio modules only, sensor modules only and both gpio and sensor modules. It's just working fine. The version without your comments is running since 14 days in my home automation 24/7.

[flyte]

From what I understand, and just to confirm, this doesn't break backwards compatibility with existing configurations, or add any dependencies does it?

[BenjiU]

From what I understand, and just to confirm, this doesn't break backwards compatibility with existing configurations, or add any dependencies does it?

Thats correct. It still works fine with your original config.example.yml, that has no sensors configured. If someone notices a bug/defect, I'll fix it, of course. ;-)

[flyte]

Sorry for the delay merging this. I'll make a note to do it this weekend.