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105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
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* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
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* Copyright (c) 2014 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <unistd.h>
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#include <iostream>
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#include "lpd8806.h"
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#include <signal.h>
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void scanner(uint8_t r, uint8_t g, uint8_t b, uint8_t wait);
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int doWork = 0;
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upm::LPD8806 *sensor = NULL;
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void
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sig_handler(int signo)
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{
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printf("got signal\n");
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if (signo == SIGINT) {
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printf("exiting application\n");
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doWork = 1;
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}
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}
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int
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main(int argc, char **argv)
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{
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//! [Interesting]
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sensor = new upm::LPD8806(10, 7);
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usleep (1000000);
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sensor->show ();
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while (!doWork) {
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// Back-and-forth lights
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scanner(127, 0, 0, 30); // red, slow
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scanner(0, 0, 127, 15); // blue, fast
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usleep (1000000);
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}
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//! [Interesting]
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std::cout << "exiting application" << std::endl;
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delete sensor;
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return 0;
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}
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void scanner(uint8_t r, uint8_t g, uint8_t b, uint8_t wait) {
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int i, j, pos, dir;
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pos = 0;
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dir = 1;
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for(i=0; i < ((sensor->getStripLength() - 1) * 8); i++) {
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// Draw 5 pixels centered on pos. setPixelColor() will clip
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// any pixels off the ends of the strip, no worries there.
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// we'll make the colors dimmer at the edges for a nice pulse
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// look
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sensor->setPixelColor(pos - 2, r/4, g/4, b/4);
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sensor->setPixelColor(pos - 1, r/2, g/2, b/2);
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sensor->setPixelColor(pos, r, g, b);
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sensor->setPixelColor(pos + 1, r/2, g/2, b/2);
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sensor->setPixelColor(pos + 2, r/4, g/4, b/4);
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sensor->show();
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usleep (wait * 1000);
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// If we wanted to be sneaky we could erase just the tail end
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// pixel, but it's much easier just to erase the whole thing
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// and draw a new one next time.
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for(j=-2; j<= 2; j++) {
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sensor->setPixelColor(pos+j, 0,0,0);
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}
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// Bounce off ends of strip
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pos += dir;
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if(pos < 0) {
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pos = 1;
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dir = -dir;
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} else if (pos >= sensor->getStripLength()) {
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pos = sensor->getStripLength() - 2;
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dir = -dir;
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}
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}
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}
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