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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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78
examples/c++/ili9341.cxx
View File

@ -22,63 +22,63 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include "ili9341.hpp"
#include "upm_utilities.h"
int main(int argc, char **argv) {
//! [Interesting]
int
main(int argc, char** argv)
{
//! [Interesting]
// Pins (Edison)
// CS_LCD GP44 (MRAA 31)
// CS_SD GP43 (MRAA 38) unused
// DC GP12 (MRAA 20)
// RESEST GP13 (MRAA 14)
upm::ILI9341 * lcd = new upm::ILI9341(31, 38, 20, 14);
upm::ILI9341 lcd(31, 38, 20, 14);
// Fill the screen with a solid color
lcd->fillScreen(lcd->color565(0, 40, 16));
lcd.fillScreen(lcd.color565(0, 40, 16));
// Draw some shapes
lcd->drawFastVLine(10, 10, 100, ILI9341_RED);
lcd->drawFastHLine(20, 10, 50, ILI9341_CYAN);
lcd->drawLine(160, 30, 200, 60, ILI9341_GREEN);
lcd->fillRect(20, 30, 75, 60, ILI9341_ORANGE);
lcd->drawCircle(70, 50, 20, ILI9341_PURPLE);
lcd->fillCircle(120, 50, 20, ILI9341_PURPLE);
lcd->drawTriangle(50, 100, 10, 140, 90, 140, ILI9341_YELLOW);
lcd->fillTriangle(150, 100, 110, 140, 190, 140, ILI9341_YELLOW);
lcd->drawRoundRect(20, 150, 50, 30, 10, ILI9341_RED);
lcd->drawRoundRect(130, 150, 50, 30, 10, ILI9341_RED);
lcd->fillRoundRect(75, 150, 50, 30, 10, ILI9341_RED);
lcd.drawFastVLine(10, 10, 100, ILI9341_RED);
lcd.drawFastHLine(20, 10, 50, ILI9341_CYAN);
lcd.drawLine(160, 30, 200, 60, ILI9341_GREEN);
lcd.fillRect(20, 30, 75, 60, ILI9341_ORANGE);
lcd.drawCircle(70, 50, 20, ILI9341_PURPLE);
lcd.fillCircle(120, 50, 20, ILI9341_PURPLE);
lcd.drawTriangle(50, 100, 10, 140, 90, 140, ILI9341_YELLOW);
lcd.fillTriangle(150, 100, 110, 140, 190, 140, ILI9341_YELLOW);
lcd.drawRoundRect(20, 150, 50, 30, 10, ILI9341_RED);
lcd.drawRoundRect(130, 150, 50, 30, 10, ILI9341_RED);
lcd.fillRoundRect(75, 150, 50, 30, 10, ILI9341_RED);
// Write some text
lcd->setCursor(0, 200);
lcd->setTextColor(ILI9341_LIGHTGREY);
lcd->setTextWrap(true);
lcd->setTextSize(1);
lcd->print("Text 1\n");
lcd->setTextSize(2);
lcd->print("Text 2\n");
lcd->setTextSize(3);
lcd->print("Text 3\n");
lcd->setTextSize(4);
lcd->print("Text 4\n");
lcd.setCursor(0, 200);
lcd.setTextColor(ILI9341_LIGHTGREY);
lcd.setTextWrap(true);
lcd.setTextSize(1);
lcd.print("Text 1\n");
lcd.setTextSize(2);
lcd.print("Text 2\n");
lcd.setTextSize(3);
lcd.print("Text 3\n");
lcd.setTextSize(4);
lcd.print("Text 4\n");
// Test screen rotation
for(int r = 0; r < 4; r++) {
lcd->setRotation(r);
lcd->fillRect(0, 0, 5, 5, ILI9341_WHITE);
sleep(1);
for (int r = 0; r < 4; r++) {
lcd.setRotation(r);
lcd.fillRect(0, 0, 5, 5, ILI9341_WHITE);
upm_delay(1);
}
// Invert colors, wait, then revert back
lcd->invertDisplay(true);
sleep(2);
lcd->invertDisplay(false);
lcd.invertDisplay(true);
upm_delay(2);
lcd.invertDisplay(false);
// Don't forget to free up that memory!
delete lcd;
//! [Interesting]
//! [Interesting]
return 0;
}
}