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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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49
examples/c++/l298.cxx
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@ -22,40 +22,41 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include "l298.hpp"
#include "upm_utilities.h"
using namespace std;
int main ()
int
main()
{
//! [Interesting]
//! [Interesting]
// Instantiate one of the 2 possible DC motors on a L298 Dual
// H-Bridge. For controlling a stepper motor, see the l298-stepper
// example.
upm::L298* l298 = new upm::L298(3, 4, 7);
cout << "Starting motor at 50% for 3 seconds..." << endl;
l298->setSpeed(50);
l298->setDirection(upm::L298::DIR_CW);
l298->enable(true);
// Instantiate one of the 2 possible DC motors on a L298 Dual
// H-Bridge. For controlling a stepper motor, see the l298-stepper
// example.
upm::L298 l298(3, 4, 7);
sleep(3);
cout << "Starting motor at 50% for 3 seconds..." << endl;
l298.setSpeed(50);
l298.setDirection(upm::L298::DIR_CW);
l298.enable(true);
cout << "Reversing direction..." << endl;
l298->setDirection(upm::L298::DIR_NONE); // fast stop
l298->setDirection(upm::L298::DIR_CCW);
sleep(3);
upm_delay(3);
l298->setSpeed(0);
l298->enable(false);
//! [Interesting]
cout << "Reversing direction..." << endl;
l298.setDirection(upm::L298::DIR_NONE); // fast stop
l298.setDirection(upm::L298::DIR_CCW);
upm_delay(3);
cout << "Exiting..." << endl;
l298.setSpeed(0);
l298.enable(false);
delete l298;
return 0;
//! [Interesting]
cout << "Exiting..." << endl;
return 0;
}