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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++/grovemd-stepper.cxx
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@ -22,45 +22,44 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <signal.h>
#include <iostream>
#include "grovemd.hpp"
#include "upm_utilities.h"
using namespace std;
int main(int argc, char **argv)
int
main(int argc, char** argv)
{
//! [Interesting]
// Instantiate an I2C Grove Motor Driver on I2C bus 0
//! [Interesting]
// Instantiate an I2C Grove Motor Driver on I2C bus 0
upm::GroveMD *motors = new upm::GroveMD(GROVEMD_I2C_BUS,
GROVEMD_DEFAULT_I2C_ADDR);
upm::GroveMD motors(GROVEMD_I2C_BUS, GROVEMD_DEFAULT_I2C_ADDR);
// This example demonstrates using the GroveMD to drive a stepper motor
// configure it, for this example, we'll assume 200 steps per rev
motors->configStepper(200);
// This example demonstrates using the GroveMD to drive a stepper motor
// set for half a rotation
motors->setStepperSteps(100);
// configure it, for this example, we'll assume 200 steps per rev
motors.configStepper(200);
// let it go - clockwise rotation, 10 RPM speed
motors->enableStepper(upm::GroveMD::STEP_DIR_CW, 10);
// set for half a rotation
motors.setStepperSteps(100);
sleep(3);
// let it go - clockwise rotation, 10 RPM speed
motors.enableStepper(upm::GroveMD::STEP_DIR_CW, 10);
// Now do it backwards...
motors->setStepperSteps(100);
motors->enableStepper(upm::GroveMD::STEP_DIR_CCW, 10);
upm_delay(3);
// now disable
motors->disableStepper();
// Now do it backwards...
motors.setStepperSteps(100);
motors.enableStepper(upm::GroveMD::STEP_DIR_CCW, 10);
//! [Interesting]
// now disable
motors.disableStepper();
cout << "Exiting..." << endl;
//! [Interesting]
delete motors;
return 0;
cout << "Exiting..." << endl;
return 0;
}