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

..

bh1750.c

bh1750: Initial implementation

2016-09-14 14:07:47 -07:00

CMakeLists.txt

mqx: C gas sensors mq2-mq9

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

dfrorp.c

dfrorp: Initial implementation

2016-09-14 14:07:52 -07:00

dfrph.c

dfrph_c_example: Fixed small copy/paste error

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

hka5.c

hka5: Initial implementation

2016-09-14 14:07:50 -07:00

mma7361.c

mma7361: Initial implementation

2016-09-14 14:07:46 -07:00

mqx.c

mqx: C gas sensors mq2-mq9

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

nmea_gps_i2c.c

nmea_gps: add support for ubloc I2c reading of NMEA data

2016-09-14 14:07:49 -07:00

nmea_gps.c

nmea_gps: renamed vk2828u7 to nmea_gps

2016-09-14 14:07:48 -07:00

urm37-uart.c

urm37: Add C library for this sensor

2016-09-14 14:07:47 -07:00

urm37.c

urm37: Add C library for this sensor

2016-09-14 14:07:47 -07:00

vdiv.c

vdiv: Added vdiv C source.

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