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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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66
examples/c++/st7735.cxx
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@ -22,58 +22,54 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <string.h>
#include <unistd.h>
#include <iostream>
#include "st7735.hpp"
#include <signal.h>
int
main(int argc, char **argv)
main(int argc, char** argv)
{
//! [Interesting]
upm::ST7735 * lcd = new upm::ST7735(7, 4, 9, 8);
lcd->fillScreen (ST7735_RED);
lcd->refresh ();
//! [Interesting]
upm::ST7735 lcd(7, 4, 9, 8);
lcd.fillScreen(ST7735_RED);
lcd.refresh();
lcd->fillScreen (ST7735_CYAN);
lcd->refresh ();
lcd.fillScreen(ST7735_CYAN);
lcd.refresh();
lcd->fillScreen (ST7735_BLACK);
lcd->refresh ();
lcd.fillScreen(ST7735_BLACK);
lcd.refresh();
lcd->drawLine(10, 10, 10, 100, ST7735_MAGENTA);
lcd->drawLine(20, 20, 10, 100, ST7735_YELLOW);
lcd->drawLine(30, 30, 50, 100, ST7735_WHITE);
lcd->refresh ();
lcd.drawLine(10, 10, 10, 100, ST7735_MAGENTA);
lcd.drawLine(20, 20, 10, 100, ST7735_YELLOW);
lcd.drawLine(30, 30, 50, 100, ST7735_WHITE);
lcd.refresh();
lcd->drawPixel (20, 20, ST7735_GREEN);
lcd->refresh ();
lcd.drawPixel(20, 20, ST7735_GREEN);
lcd.refresh();
lcd->drawTriangle (50, 50, 80, 80, 60, 90, ST7735_GREEN);
lcd->refresh ();
lcd.drawTriangle(50, 50, 80, 80, 60, 90, ST7735_GREEN);
lcd.refresh();
lcd->drawCircle (100, 110, 10, ST7735_BLUE);
lcd->refresh ();
lcd.drawCircle(100, 110, 10, ST7735_BLUE);
lcd.refresh();
lcd.setTextWrap(0x0);
lcd->setTextWrap(0x0);
lcd.setCursor(0, 30);
lcd.setTextColor(ST7735_RED, ST7735_RED);
lcd.setTextSize(1);
lcd.print("Hello World!");
lcd->setCursor(0, 30);
lcd->setTextColor(ST7735_RED, ST7735_RED);
lcd->setTextSize(1);
lcd->print("Hello World!");
lcd.setCursor(10, 50);
lcd.setTextColor(ST7735_RED, ST7735_YELLOW);
lcd.setTextSize(2);
lcd.print("BIG");
lcd->setCursor(10, 50);
lcd->setTextColor(ST7735_RED, ST7735_YELLOW);
lcd->setTextSize(2);
lcd->print("BIG");
lcd->refresh ();
lcd.refresh();
std::cout << "exiting application" << std::endl;
delete lcd;
//! [Interesting]
//! [Interesting]
return 0;
}