1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include "lpd8806.hpp"
#include <signal.h>
void scanner(uint8_t r, uint8_t g, uint8_t b, uint8_t wait);
int doWork = 0;
upm::LPD8806 *sensor = NULL;
void
sig_handler(int signo)
{
printf("got signal\n");
if (signo == SIGINT) {
printf("exiting application\n");
doWork = 1;
}
}
int
main(int argc, char **argv)
{
//! [Interesting]
sensor = new upm::LPD8806(10, 7);
usleep (1000000);
sensor->show ();
while (!doWork) {
// Back-and-forth lights
scanner(127, 0, 0, 30); // red, slow
scanner(0, 0, 127, 15); // blue, fast
usleep (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) {
int i, j, pos, dir;
pos = 0;
dir = 1;
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->show();
usleep (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);
}
// Bounce off ends of strip
pos += dir;
if(pos < 0) {
pos = 1;
dir = -dir;
} else if (pos >= sensor->getStripLength()) {
pos = sensor->getStripLength() - 2;
dir = -dir;
}
}
}
|
