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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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41
examples/c++/ds2413.cxx
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@@ -22,38 +22,37 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include <stdio.h>
#include "ds2413.hpp"
using namespace std;
using namespace upm;
int main(int argc, char **argv)
int
main(int argc, char** argv)
{
//! [Interesting]
// Instantiate a DS2413 Module on a Dallas 1-wire bus connected to UART 0
upm::DS2413* sensor = new upm::DS2413(0);
//! [Interesting]
// Instantiate a DS2413 Module on a Dallas 1-wire bus connected to UART 0
upm::DS2413 sensor(0);
// find all of the DS2413 devices present on the bus
sensor->init();
// find all of the DS2413 devices present on the bus
sensor.init();
// how many devices were found?
cout << "Found "<< sensor->devicesFound() << " device(s)" << endl;
// how many devices were found?
cout << "Found " << sensor.devicesFound() << " device(s)" << endl;
// read the gpio and latch values from the first device
// the lower 4 bits are of the form:
// <gpioB latch> <gpioB value> <gpioA latch> <gpioA value>
cout << "GPIO device 0 values: " << sensor->readGpios(0) << endl;
// read the gpio and latch values from the first device
// the lower 4 bits are of the form:
// <gpioB latch> <gpioB value> <gpioA latch> <gpioA value>
cout << "GPIO device 0 values: " << sensor.readGpios(0) << endl;
// set the gpio latch values of the first device
cout << "Setting GPIO latches to on" << endl;
sensor->writeGpios(0, 0x03);
// set the gpio latch values of the first device
cout << "Setting GPIO latches to on" << endl;
sensor.writeGpios(0, 0x03);
cout << "Exiting..." << endl;
cout << "Exiting..." << endl;
delete sensor;
//! [Interesting]
return 0;
//! [Interesting]
return 0;
}