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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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72
examples/c++/groveelectromagnet.cxx
View File

@ -22,58 +22,60 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <time.h>
#include <signal.h>
#include <sys/time.h>
#include <time.h>
#include "groveelectromagnet.hpp"
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;
}
float get_time()
float
get_time()
{
return ((float)(clock()))/CLOCKS_PER_SEC;
return ((float) (clock())) / CLOCKS_PER_SEC;
}
int main(int argc, char **argv)
int
main(int argc, char** argv)
{
signal(SIGINT, sig_handler);
signal(SIGINT, sig_handler);
//! [Interesting]
// The was tested with the Grove Electromagnetic Module
// Instantiate a Grove Electromagnet on digital pin D2
upm::GroveElectromagnet* magnet = new upm::GroveElectromagnet(2);
cout << "Starting up magnet...." << endl;
magnet->off();
//! [Interesting]
// The was tested with the Grove Electromagnetic Module
// Instantiate a Grove Electromagnet on digital pin D2
upm::GroveElectromagnet magnet(2);
cout << "Starting up magnet...." << endl;
magnet.off();
bool magnetState = false;
float time_passed = get_time();
bool magnetState = false;
float time_passed = get_time();
// Turn magnet on and off every 5 seconds
while (shouldRun)
{
if ((get_time() - time_passed) > 5.0)
{
magnetState = !magnetState;
if (magnetState)
magnet->on();
else
magnet->off();
cout << "Turning magnet " << ((magnetState) ? "on" : "off") << endl;
time_passed = get_time();
}
}
// Turn magnet on and off every 5 seconds
while (shouldRun) {
if ((get_time() - time_passed) > 5.0) {
magnetState = !magnetState;
if (magnetState)
magnet.on();
else
magnet.off();
cout << "Turning magnet " << ((magnetState) ? "on" : "off") << endl;
time_passed = get_time();
}
}
//! [Interesting]
magnet->off();
cout << "Exiting" << endl;
//! [Interesting]
magnet.off();
cout << "Exiting" << endl;
delete magnet;
return 0;
return 0;
}