alexey.zholtikov/upm
1
0
Fork 0
mirror of https://github.com/eclipse/upm.git synced 2025-07-03 10:21:19 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

examples: Remove heap allocation from C++ examples

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

61
examples/c++/mq303a.cxx
View File

@ -22,57 +22,56 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include <signal.h>
#include "mq303a.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 an mq303a sensor on analog pin A0
//! [Interesting]
// Instantiate an mq303a sensor on analog pin A0
// This device uses a heater powered from an analog I/O pin.
// If using A0 as the data pin, then you need to use A1, as the heater
// pin (if using a grove mq303a). For A1, we can use the D15 gpio,
// setup as an output, and drive it low to power the heater.
// This device uses a heater powered from an analog I/O pin.
// If using A0 as the data pin, then you need to use A1, as the heater
// pin (if using a grove mq303a). For A1, we can use the D15 gpio,
// setup as an output, and drive it low to power the heater.
upm::MQ303A *mq303a = new upm::MQ303A(0, 15);
cout << "Enabling heater and waiting 2 minutes for warmup." << endl;
mq303a->heaterEnable(true);
sleep(120);
upm::MQ303A mq303a(0, 15);
cout << "This sensor may need to warm until the value drops below about 450."
<< endl;
cout << "Enabling heater and waiting 2 minutes for warmup." << endl;
mq303a.heaterEnable(true);
upm_delay(120);
// Print the detected alcohol value every second
while (shouldRun)
{
int val = mq303a->value();
cout << "This sensor may need to warm until the value drops below about 450." << endl;
cout << "Alcohol detected (higher means stronger alcohol): "
<< val << endl;
// Print the detected alcohol value every second
while (shouldRun) {
int val = mq303a.value();
sleep(1);
cout << "Alcohol detected (higher means stronger alcohol): " << val << endl;
upm_delay(1);
}
//! [Interesting]
//! [Interesting]
cout << "Exiting" << endl;
mq303a->heaterEnable(false);
cout << "Exiting" << endl;
mq303a.heaterEnable(false);
delete mq303a;
return 0;
return 0;
}