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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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30
examples/c++/relay.cxx
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@@ -22,37 +22,37 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include "relay.hpp"
#include "upm_utilities.h"
int
main(int argc, char **argv)
main(int argc, char** argv)
{
// This example uses GPIO 0
//! [Interesting]
//! [Interesting]
// Create the relay switch object using GPIO pin 0
upm::Relay* relay = new upm::Relay(0);
upm::Relay relay(0);
// Close and then open the relay switch 3 times,
// waiting one second each time. The LED on the relay switch
// will light up when the switch is on (closed).
// The switch will also make a noise between transitions.
for ( int i = 0; i < 3; i++ ) {
relay->on();
if ( relay->isOn() )
std::cout << relay->name() << " is on" << std::endl;
sleep(1);
relay->off();
if ( relay->isOff() )
std::cout << relay->name() << " is off" << std::endl;
sleep(1);
for (int i = 0; i < 3; i++) {
relay.on();
if (relay.isOn())
std::cout << relay.name() << " is on" << std::endl;
upm_delay(1);
relay.off();
if (relay.isOff())
std::cout << relay.name() << " is off" << std::endl;
upm_delay(1);
}
// Delete the relay switch object
delete relay;
//! [Interesting]
//! [Interesting]
return 0;
}