2 Commits

Author SHA1 Message Date
Noel Eck
5cefe7f5f3 examples: Remove heap allocation from C++ examples
Cleanup of UPM C++ examples.  Switched from heap allocation to
stack allocation when possible.  This simplifies the samples since it
removes the need for explicit memory management.  A script was used to
identify and replace pointer use.  To simplify the replace script, I
re-formatted the C++ examples using the UPM .clang-format file.
Unfortuantely this changes the look of the UPM C++ examples to a large
degree.  However, examples will now have a standard look/feel and
uniform formatting.

    * Ran clang-format w/provided UPM .clang-format file
    * Removed new's/delete's whenever possible (left those in interface
      examples)
    * Added IIO sensor library implementation of callback void* arg
    * Converted all sleeps to upm defined delays (added header when
      necessary)
    * Scrubbed CXX example includes

Signed-off-by: Noel Eck <noel.eck@intel.com>
2017-09-19 12:41:58 -07:00
Lay, Kuan Loon
fabf4287d6 upm: enable MMC35240 3-axis magnetic sensor library and example
MMC35240 is 3-axis magnetic sensor from MEMSIC.

This sensor can measure magnetic fields within the full scale range of
+-24 Gauss (G).

The library provided is libupm-mmc35240.so
The example provided is mmc35240-example-cxx where it will print x,y,z axis
when trigger buffer data is ready. It's also print azimuth value.

This sensor requires calibration. Please shake the sensor in figure 8 pattern,
mmc35240-example will print the calibrated level.

As the sensor data is noisy, we have implemented denoise algorithm within the
sensor library.

The azimuth formula is provided by Han, He <he.han@intel.com>.

Signed-off-by: Lay, Kuan Loon <kuan.loon.lay@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2017-03-16 17:22:40 -07:00