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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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53
examples/c++/a110x-intr.cxx
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@@ -22,55 +22,58 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include <signal.h>
#include <stddef.h>
#include "a110x.hpp"
#include "upm_utilities.h"
using namespace std;
int shouldRun = true;
void sig_handler(int signo)
void
sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
if (signo == SIGINT)
shouldRun = false;
}
// Our pulse counter
volatile unsigned int counter = 0;
// Our interrupt handler
void hallISR(void *arg)
void
hallISR(void* arg)
{
counter++;
counter++;
}
int main ()
int
main()
{
signal(SIGINT, sig_handler);
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate an A110X sensor on digital pin D2
upm::A110X* hall = new upm::A110X(2);
// This example uses a user-supplied interrupt handler to count
// pulses that occur when a magnetic field of the correct polarity
// is detected. This could be used to measure the rotations per
// minute (RPM) of a rotor for example.
//! [Interesting]
// Instantiate an A110X sensor on digital pin D2
upm::A110X hall(2);
hall->installISR(hallISR, NULL);
// This example uses a user-supplied interrupt handler to count
// pulses that occur when a magnetic field of the correct polarity
// is detected. This could be used to measure the rotations per
// minute (RPM) of a rotor for example.
while (shouldRun)
{
cout << "Pulses detected: " << counter << endl;
hall.installISR(hallISR, NULL);
sleep(1);
while (shouldRun) {
cout << "Pulses detected: " << counter << endl;
upm_delay(1);
}
//! [Interesting]
//! [Interesting]
cout << "Exiting..." << endl;
cout << "Exiting..." << endl;
delete hall;
return 0;
return 0;
}