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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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31
examples/c++/l3gd20.cxx
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@@ -22,16 +22,16 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <iomanip>
#include <unistd.h>
#include <iostream>
#include <signal.h>
#include "l3gd20.hpp"
#include "upm_utilities.h"
using namespace std;
int shouldRun = true;
upm::L3GD20* gyroscope;
void
sig_handler(int signo)
@@ -41,9 +41,11 @@ sig_handler(int signo)
}
void
data_callback(char* data)
data_callback(char* data, void* args)
{
float x, y, z;
upm::L3GD20* gyroscope = static_cast<upm::L3GD20*>(args);
if (gyroscope->extract3Axis(data, &x, &y, &z)) {
cout << fixed << setprecision(1);
cout << x << '\t' << y << '\t' << z << "[rad/sec]" << endl;
@@ -55,25 +57,24 @@ main()
{
signal(SIGINT, sig_handler);
//! [Interesting]
upm::L3GD20 gyroscope(3);
// Instantiate a L3GD20 Gyroscope Sensor on iio device 3
gyroscope = new upm::L3GD20(3);
// Available scales are 0.000153(250dps), 0.000305(500dps), and 0.001222(2000dps)
gyroscope->setScale(0.001222);
// Available scales are 0.000153(250dps), 0.000305(500dps), and
// 0.001222(2000dps)
gyroscope.setScale(0.001222);
// Available sampling frequency are 95, 190, 380, and 760
gyroscope->setSamplingFrequency(95.0);
gyroscope->enable3AxisChannel();
gyroscope->installISR(data_callback, NULL);
gyroscope->enableBuffer(16);
gyroscope.setSamplingFrequency(95.0);
gyroscope.enable3AxisChannel();
gyroscope.installISR(data_callback, &gyroscope);
gyroscope.enableBuffer(16);
while (shouldRun) {
sleep(1);
upm_delay(1);
}
gyroscope->disableBuffer();
gyroscope.disableBuffer();
//! [Interesting]
cout << "Exiting" << endl;
delete gyroscope;
return 0;
}