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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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59
examples/c++/mma7660.cxx
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@ -22,58 +22,55 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <signal.h>
#include <iostream>
#include <signal.h>
#include "mma7660.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 argc, char **argv)
int
main(int argc, char** argv)
{
signal(SIGINT, sig_handler);
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate an MMA7660 on I2C bus 0
//! [Interesting]
// Instantiate an MMA7660 on I2C bus 0
upm::MMA7660 *accel = new upm::MMA7660(MMA7660_DEFAULT_I2C_BUS,
MMA7660_DEFAULT_I2C_ADDR);
upm::MMA7660 accel(MMA7660_DEFAULT_I2C_BUS, MMA7660_DEFAULT_I2C_ADDR);
// place device in standby mode so we can write registers
accel->setModeStandby();
// place device in standby mode so we can write registers
accel.setModeStandby();
// enable 64 samples per second
accel->setSampleRate(MMA7660_AUTOSLEEP_64);
// enable 64 samples per second
accel.setSampleRate(MMA7660_AUTOSLEEP_64);
// place device into active mode
accel->setModeActive();
// place device into active mode
accel.setModeActive();
while (shouldRun)
{
float ax, ay, az;
while (shouldRun) {
float ax, ay, az;
accel->getAcceleration(&ax, &ay, &az);
cout << "Acceleration: x = " << ax
<< "g y = " << ay
<< "g z = " << az
<< "g" << endl;
accel.getAcceleration(&ax, &ay, &az);
cout << "Acceleration: x = " << ax << "g y = " << ay << "g z = " << az << "g" << endl;
cout << endl;
usleep(500000);
cout << endl;
upm_delay_us(500000);
}
//! [Interesting]
//! [Interesting]
cout << "Exiting..." << endl;
cout << "Exiting..." << endl;
delete accel;
return 0;
return 0;
}