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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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44
examples/c++/mmc35240.cxx
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@ -22,15 +22,16 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <unistd.h>
#include <signal.h>
#include <math.h>
#include <signal.h>
#include <string>
#include "mmc35240.hpp"
#include "upm_utilities.h"
using namespace std;
int shouldRun = true;
upm::MMC35240* magnetometer;
void
sig_handler(int signo)
@ -40,18 +41,19 @@ sig_handler(int signo)
}
void
data_callback(char* data)
data_callback(char* data, void* args)
{
upm::MMC35240* magnetometer = static_cast<upm::MMC35240*>(args);
float x, y, z;
double azimuth;
int level;
magnetometer->extract3Axis(data, &x, &y, &z);
/* calibrated level
* UNRELIABLE = 0
* ACCURACY_LOW = 1
* ACCURACY_MEDIUM = 2
* ACCURACY_HIGH = >=3
*/
* UNRELIABLE = 0
* ACCURACY_LOW = 1
* ACCURACY_MEDIUM = 2
* ACCURACY_HIGH = >=3
*/
level = magnetometer->getCalibratedLevel();
if ((x == 0) && (y == 0)) {
@ -85,27 +87,27 @@ main()
{
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a MMC35240 Magnetic Sensor on iio device 5. This configuration is a reference and
// Instantiate a MMC35240 Magnetic Sensor on iio device 5. This configuration
// is a reference and
// should be changed per platform/board type.
magnetometer = new upm::MMC35240(5);
// Kernel driver does not allow changing the value of scale at run-time, default scale is
// Kernel driver does not allow changing the value of scale at run-time,
// default scale is
// 0.001000
magnetometer->setScale(0.001000);
upm::MMC35240 magnetometer(5);
magnetometer.setScale(0.001000);
// Available sampling frequency are 1.5, 13, 25, 50
magnetometer->setSamplingFrequency(25.000000);
magnetometer->enable3AxisChannel();
magnetometer->installISR(data_callback, NULL);
magnetometer->enableBuffer(16);
magnetometer.setSamplingFrequency(25.000000);
magnetometer.enable3AxisChannel();
magnetometer.installISR(data_callback, &magnetometer);
magnetometer.enableBuffer(16);
while (shouldRun) {
sleep(1);
upm_delay(1);
}
magnetometer->disableBuffer();
magnetometer.disableBuffer();
//! [Interesting]
cout << "Exiting" << endl;
delete magnetometer;
return 0;
}