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+/*
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+ * piglow.c:
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+ * Very simple demonstration of the PiGlow board.
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+ * This uses the piGlow devLib.
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+ *
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+ * Copyright (c) 2013 Gordon Henderson.
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+ ***********************************************************************
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+ * This file is part of wiringPi:
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+ * https://projects.drogon.net/raspberry-pi/wiringpi/
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+ *
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+ * wiringPi is free software: you can redistribute it and/or modify
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+ * it under the terms of the GNU Lesser General Public License as published by
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+ * the Free Software Foundation, either version 3 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * wiringPi is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU Lesser General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU Lesser General Public License
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+ * along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
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+ ***********************************************************************
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+ */
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+
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+#include <stdio.h>
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+#include <string.h>
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+#include <stdlib.h>
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+
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+#ifndef TRUE
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+# define TRUE (1==1)
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+# define FALSE (!TRUE)
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+#endif
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+
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+#include <wiringPi.h>
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+#include <piGlow.h>
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+
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+static void failUsage (void)
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+{
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+ fprintf (stderr, "Usage examples:\n") ;
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+ fprintf (stderr, " piglow off # All off\n") ;
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+ fprintf (stderr, " piglow red 50 # Light the 3 red LEDs to 50%%\n") ;
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+ fprintf (stderr, " colours are: red, yellow, orange, green, blue and white\n") ;
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+ fprintf (stderr, " piglow all 75 # Light all to 75%%\n") ;
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+ fprintf (stderr, " piglow leg 0 25 # Light leg 0 to 25%%\n") ;
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+ fprintf (stderr, " piglow ring 3 100 # Light ring 3 to 100%%\n") ;
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+ fprintf (stderr, " piglow led 2 5 100 # Light the single LED on Leg 2, ring 5 to 100%%\n") ;
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+
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+ exit (EXIT_FAILURE) ;
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+}
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+
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+static int getPercent (char *typed)
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+{
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+ int percent ;
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+
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+ percent = atoi (typed) ;
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+ if ((percent < 0) || (percent > 100))
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+ {
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+ fprintf (stderr, "piglow: percent value out of range\n") ;
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+ exit (EXIT_FAILURE) ;
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+ }
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+ return (percent * 255) / 100 ;
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+}
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+
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+
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+/*
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+ * main:
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+ * Our little demo prgoram
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+ *********************************************************************************
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+ */
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+
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+int main (int argc, char *argv [])
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+{
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+ int percent ;
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+ int ring, leg ;
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+
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+// Always initialise wiringPi:
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+// Use the Sys method if you don't need to run as root
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+
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+ wiringPiSetupSys () ;
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+
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+// Initialise the piGlow devLib
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+
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+ piGlowSetup (FALSE) ;
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+
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+ if (argc == 1)
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+ failUsage () ;
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+
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+ if ((argc == 2) && (strcasecmp (argv [1], "off") == 0))
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+ {
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+ for (leg = 0 ; leg < 3 ; ++leg)
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+ piGlowLeg (leg, 0) ;
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+ return 0 ;
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+ }
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+
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+ if (argc == 3)
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+ {
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+ percent = getPercent (argv [2]) ;
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+
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+ /**/ if (strcasecmp (argv [1], "red") == 0)
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+ piGlowRing (PIGLOW_RED, percent) ;
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+ else if (strcasecmp (argv [1], "yellow") == 0)
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+ piGlowRing (PIGLOW_YELLOW, percent) ;
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+ else if (strcasecmp (argv [1], "orange") == 0)
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+ piGlowRing (PIGLOW_ORANGE, percent) ;
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+ else if (strcasecmp (argv [1], "green") == 0)
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+ piGlowRing (PIGLOW_GREEN, percent) ;
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+ else if (strcasecmp (argv [1], "blue") == 0)
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+ piGlowRing (PIGLOW_BLUE, percent) ;
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+ else if (strcasecmp (argv [1], "white") == 0)
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+ piGlowRing (PIGLOW_WHITE, percent) ;
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+ else if (strcasecmp (argv [1], "all") == 0)
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+ for (ring = 0 ; ring < 6 ; ++ring)
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+ piGlowRing (ring, percent) ;
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+ else
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+ {
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+ fprintf (stderr, "piglow: invalid colour\n") ;
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+ exit (EXIT_FAILURE) ;
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+ }
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+ return 0 ;
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+ }
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+
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+ if (argc == 4)
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+ {
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+ /**/ if (strcasecmp (argv [1], "leg") == 0)
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+ {
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+ leg = atoi (argv [2]) ;
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+ if ((leg < 0) || (leg > 2))
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+ {
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+ fprintf (stderr, "piglow: leg value out of range\n") ;
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+ exit (EXIT_FAILURE) ;
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+ }
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+ percent = getPercent (argv [3]) ;
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+ piGlowLeg (leg, percent) ;
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+ }
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+ else if (strcasecmp (argv [1], "ring") == 0)
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+ {
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+ ring = atoi (argv [2]) ;
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+ if ((ring < 0) || (ring > 5))
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+ {
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+ fprintf (stderr, "piglow: ring value out of range\n") ;
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+ exit (EXIT_FAILURE) ;
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+ }
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+ percent = getPercent (argv [3]) ;
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+ piGlowRing (ring, percent) ;
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+ }
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+ return 0 ;
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+ }
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+
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+ if (argc == 5)
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+ {
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+ if (strcasecmp (argv [1], "led") != 0)
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+ failUsage () ;
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+
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+ leg = atoi (argv [2]) ;
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+ if ((leg < 0) || (leg > 2))
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+ {
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+ fprintf (stderr, "piglow: leg value out of range\n") ;
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+ exit (EXIT_FAILURE) ;
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+ }
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+ ring = atoi (argv [3]) ;
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+ if ((ring < 0) || (ring > 5))
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+ {
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+ fprintf (stderr, "piglow: ring value out of range\n") ;
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+ exit (EXIT_FAILURE) ;
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+ }
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+ percent = getPercent (argv [4]) ;
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+ piGlow1 (leg, ring, percent) ;
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+ return 0 ;
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+ }
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+
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+ failUsage () ;
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+ return 0 ;
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+}
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+
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+
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