Noel Eck fe318a78d2 mqx: C gas sensors mq2-mq9 ...

Implement a single source file for the following:

    * mq2: H2/LPG/CH4/CO/alcohol/smoke/propane/etc
    * mq3: Alcohol/benzine/CH4/hexane/LPG/CO
    * mq4: CNG (mostly methane)
    * mq5: H2/LPG/CH4/CO/alcohol
    * mq6: LPG (mostly propane/butane)
    * mq7: CO
    * mq8: H
    * mq9: CO/CH4/LPG

The documentation for these sensors notes that they do not read an exact
gas concentration.  Some of the sensors have examples for how to
calibrate with a 'clean air environment' for outputing ppm, but this is
not the case for all mqx sensors.  Because of this, the output can be
read as a normalized output (0.0->1.0), raw volts (normalized * aRef),
or a scaled/offset voltage.

Signed-off-by: Noel Eck <noel.eck@intel.com>

2016-09-14 14:08:56 -07:00

..

c

mqx: C gas sensors mq2-mq9

2016-09-14 14:08:56 -07:00

c++

cmake: Cleanup of cmake messages.

2016-09-14 14:08:55 -07:00

java

vdiv: Added vdiv C source.

2016-09-14 14:07:55 -07:00

javascript

vdiv: Added vdiv C source.

2016-09-14 14:07:55 -07:00

python

vdiv: Added vdiv C source.

2016-09-14 14:07:55 -07:00