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

55
examples/c++/lpd8806.cxx
View File

@ -22,15 +22,16 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include "lpd8806.hpp"
#include <signal.h>
#include <stdio.h>
void scanner(uint8_t r, uint8_t g, uint8_t b, uint8_t wait);
#include "lpd8806.hpp"
#include "upm_utilities.h"
void scanner(upm::LPD8806& sensor, uint8_t r, uint8_t g, uint8_t b, uint8_t wait);
int doWork = 0;
upm::LPD8806 *sensor = NULL;
void
sig_handler(int signo)
@ -43,61 +44,61 @@ sig_handler(int signo)
}
int
main(int argc, char **argv)
main(int argc, char** argv)
{
//! [Interesting]
sensor = new upm::LPD8806(0, 7, 10);
usleep (1000000);
upm::LPD8806 sensor(0, 7, 10);
upm_delay_us(1000000);
sensor->show ();
sensor.show();
while (!doWork) {
// Back-and-forth lights
scanner(127, 0, 0, 30); // red, slow
scanner(0, 0, 127, 15); // blue, fast
usleep (1000000);
scanner(sensor, 127, 0, 0, 30); // red, slow
scanner(sensor, 0, 0, 127, 15); // blue, fast
upm_delay_us(1000000);
}
//! [Interesting]
std::cout << "exiting application" << std::endl;
delete sensor;
return 0;
}
void scanner(uint8_t r, uint8_t g, uint8_t b, uint8_t wait) {
void
scanner(upm::LPD8806& sensor, uint8_t r, uint8_t g, uint8_t b, uint8_t wait)
{
int i, j, pos, dir;
pos = 0;
dir = 1;
for(i=0; i < ((sensor->getStripLength() - 1) * 8); i++) {
for (i = 0; i < ((sensor.getStripLength() - 1) * 8); i++) {
// Draw 5 pixels centered on pos. setPixelColor() will clip
// any pixels off the ends of the strip, no worries there.
// we'll make the colors dimmer at the edges for a nice pulse
// look
sensor->setPixelColor(pos - 2, r/4, g/4, b/4);
sensor->setPixelColor(pos - 1, r/2, g/2, b/2);
sensor->setPixelColor(pos, r, g, b);
sensor->setPixelColor(pos + 1, r/2, g/2, b/2);
sensor->setPixelColor(pos + 2, r/4, g/4, b/4);
sensor.setPixelColor(pos - 2, r / 4, g / 4, b / 4);
sensor.setPixelColor(pos - 1, r / 2, g / 2, b / 2);
sensor.setPixelColor(pos, r, g, b);
sensor.setPixelColor(pos + 1, r / 2, g / 2, b / 2);
sensor.setPixelColor(pos + 2, r / 4, g / 4, b / 4);
sensor->show();
usleep (wait * 1000);
sensor.show();
upm_delay_us(wait * 1000);
// If we wanted to be sneaky we could erase just the tail end
// pixel, but it's much easier just to erase the whole thing
// and draw a new one next time.
for(j=-2; j<= 2; j++) {
sensor->setPixelColor(pos+j, 0,0,0);
for (j = -2; j <= 2; j++) {
sensor.setPixelColor(pos + j, 0, 0, 0);
}
// Bounce off ends of strip
pos += dir;
if(pos < 0) {
if (pos < 0) {
pos = 1;
dir = -dir;
} else if (pos >= sensor->getStripLength()) {
pos = sensor->getStripLength() - 2;
} else if (pos >= sensor.getStripLength()) {
pos = sensor.getStripLength() - 2;
dir = -dir;
}
}