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examples: Remove heap allocation from C++ examples

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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>
This commit is contained in:
Noel Eck
2017-08-30 15:00:29 -07:00
committed by Mihai Tudor Panu
parent bd6e4ec786
commit 5cefe7f5f3
290 changed files with 7976 additions and 8520 deletions
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27
examples/c++/hmc5883l.cxx
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@@ -23,29 +23,30 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <stdio.h>
#include "hmc5883l.hpp"
#include "upm_utilities.h"
int
main(int argc, char **argv)
main(int argc, char** argv)
{
//! [Interesting]
//! [Interesting]
// Instantiate on I2C
upm::Hmc5883l* compass = new upm::Hmc5883l(0);
upm::Hmc5883l compass(0);
compass->set_declination(0.2749); // Set your declination from
// true north in radians
compass.set_declination(0.2749); // Set your declination from
// true north in radians
// Print out the coordinates, heading, and direction every second
while(true){
compass->update(); // Update the coordinates
const int16_t *pos = compass->coordinates();
while (true) {
compass.update(); // Update the coordinates
const int16_t* pos = compass.coordinates();
fprintf(stdout, "coor: %5d %5d %5d ", pos[0], pos[1], pos[2]);
fprintf(stdout, "heading: %5.2f direction: %3.2f\n",
compass->heading(), compass->direction());
sleep(1);
fprintf(stdout, "heading: %5.2f direction: %3.2f\n", compass.heading(), compass.direction());
upm_delay(1);
}
//! [Interesting]
//! [Interesting]
return 0;
}