/* * Author: Yevgeniy Kiveisha * 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 #include #include #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; 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] upm::LPD8806 sensor(0, 7, 10); upm_delay_us(1000000); sensor.show(); while (!doWork) { // Back-and-forth lights 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; return 0; } 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++) { // 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(); 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); } // 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; } } }