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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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64
examples/c++/grovewfs.cxx
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@ -22,57 +22,57 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include <signal.h>
#include "grovewfs.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;
}
int main()
int
main()
{
signal(SIGINT, sig_handler);
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a Grove Water Flow Sensor on digital pin D2
upm::GroveWFS* flow = new upm::GroveWFS(2);
// set the flow counter to 0 and start counting
flow->clearFlowCounter();
flow->startFlowCounter();
//! [Interesting]
// Instantiate a Grove Water Flow Sensor on digital pin D2
upm::GroveWFS flow(2);
while (shouldRun)
{
// we grab these (,illis and flowCount) just for display
// purposes in this example
uint32_t millis = flow->getMillis();
uint32_t flowCount = flow->flowCounter();
// set the flow counter to 0 and start counting
flow.clearFlowCounter();
flow.startFlowCounter();
float fr = flow->flowRate();
while (shouldRun) {
// we grab these (,illis and flowCount) just for display
// purposes in this example
uint32_t millis = flow.getMillis();
uint32_t flowCount = flow.flowCounter();
// output milliseconds passed, flow count, and computed flow rate
cout << "Millis: " << millis << " Flow Count: " << flowCount;
cout << " Flow Rate: " << fr << " LPM" << endl;
float fr = flow.flowRate();
// best to gather data for at least one second for reasonable
// results.
sleep(2);
// output milliseconds passed, flow count, and computed flow rate
cout << "Millis: " << millis << " Flow Count: " << flowCount;
cout << " Flow Rate: " << fr << " LPM" << endl;
// best to gather data for at least one second for reasonable
// results.
upm_delay(2);
}
flow->stopFlowCounter();
//! [Interesting]
flow.stopFlowCounter();
//! [Interesting]
cout << "Exiting..." << endl;
cout << "Exiting..." << endl;
delete flow;
return 0;
return 0;
}